/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 00:02:58,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:02:58,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:02:58,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:02:58,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:02:58,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:02:58,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:02:58,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:02:58,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:02:58,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:02:58,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:02:58,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:02:58,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:02:58,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:02:58,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:02:58,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:02:58,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:02:58,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:02:58,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:02:58,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:02:58,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:02:58,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:02:58,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:02:58,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:02:58,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:02:58,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:02:58,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:02:58,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:02:58,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:02:58,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:02:58,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:02:58,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:02:58,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:02:58,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:02:58,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:02:58,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:02:58,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:02:58,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:02:58,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:02:58,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:02:58,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:02:58,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 00:02:58,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:02:58,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:02:58,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:02:58,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:02:58,802 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:02:58,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:02:58,802 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:02:58,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:02:58,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:02:58,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:02:58,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:02:58,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:02:58,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:02:58,803 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:02:58,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:02:58,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:02:58,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:02:58,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:02:58,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:02:58,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:02:58,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:02:58,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:02:58,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:02:58,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:02:58,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:02:58,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:02:58,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:02:58,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:02:58,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:02:58,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 00:02:59,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:02:59,097 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:02:59,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:02:59,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:02:59,102 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:02:59,103 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_6.c [2020-10-15 00:02:59,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc32195dc/cc6adb43aa964ea8b9349667365794df/FLAGdee3402d4 [2020-10-15 00:02:59,588 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:02:59,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/mono-crafted_6.c [2020-10-15 00:02:59,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc32195dc/cc6adb43aa964ea8b9349667365794df/FLAGdee3402d4 [2020-10-15 00:02:59,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc32195dc/cc6adb43aa964ea8b9349667365794df [2020-10-15 00:02:59,997 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:02:59,999 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:03:00,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:03:00,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:03:00,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:03:00,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:02:59" (1/1) ... [2020-10-15 00:03:00,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc1a58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:00, skipping insertion in model container [2020-10-15 00:03:00,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:02:59" (1/1) ... [2020-10-15 00:03:00,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:03:00,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:03:00,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:03:00,196 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:03:00,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:03:00,224 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:03:00,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:00 WrapperNode [2020-10-15 00:03:00,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:03:00,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:03:00,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:03:00,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:03:00,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:00" (1/1) ... [2020-10-15 00:03:00,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:00" (1/1) ... [2020-10-15 00:03:00,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:00" (1/1) ... [2020-10-15 00:03:00,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:00" (1/1) ... [2020-10-15 00:03:00,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:00" (1/1) ... [2020-10-15 00:03:00,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:00" (1/1) ... [2020-10-15 00:03:00,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:00" (1/1) ... [2020-10-15 00:03:00,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:03:00,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:03:00,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:03:00,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:03:00,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:03:00,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:03:00,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:03:00,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-15 00:03:00,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:03:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:03:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-15 00:03:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:03:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:03:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:03:00,574 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:03:00,574 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 00:03:00,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:03:00 BoogieIcfgContainer [2020-10-15 00:03:00,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:03:00,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:03:00,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:03:00,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:03:00,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:02:59" (1/3) ... [2020-10-15 00:03:00,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5731bb1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:03:00, skipping insertion in model container [2020-10-15 00:03:00,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:00" (2/3) ... [2020-10-15 00:03:00,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5731bb1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:03:00, skipping insertion in model container [2020-10-15 00:03:00,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:03:00" (3/3) ... [2020-10-15 00:03:00,585 INFO L109 eAbstractionObserver]: Analyzing ICFG mono-crafted_6.c [2020-10-15 00:03:00,596 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:03:00,602 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:03:00,617 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:03:00,664 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:03:00,664 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:03:00,665 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:03:00,665 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:03:00,665 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:03:00,665 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:03:00,666 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:03:00,666 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:03:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-15 00:03:00,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 00:03:00,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:00,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:00,704 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:00,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:00,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1560044592, now seen corresponding path program 1 times [2020-10-15 00:03:00,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:00,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644761232] [2020-10-15 00:03:00,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:00,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:00,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:00,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:03:00,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:00,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-15 00:03:00,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:00,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:00,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:03:00,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:00,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:03:00,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 00:03:00,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:00,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:00,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:00,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:00,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:00,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:03:00,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:00,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:00,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:00,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:00,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:00,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:00,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:00,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644761232] [2020-10-15 00:03:00,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:03:00,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 00:03:00,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550182902] [2020-10-15 00:03:00,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 00:03:00,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:00,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 00:03:00,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 00:03:00,950 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2020-10-15 00:03:01,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:01,004 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2020-10-15 00:03:01,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 00:03:01,006 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 00:03:01,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:01,014 INFO L225 Difference]: With dead ends: 39 [2020-10-15 00:03:01,014 INFO L226 Difference]: Without dead ends: 16 [2020-10-15 00:03:01,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 00:03:01,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-15 00:03:01,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-15 00:03:01,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-15 00:03:01,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-10-15 00:03:01,051 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2020-10-15 00:03:01,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:01,051 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-10-15 00:03:01,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 00:03:01,052 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-10-15 00:03:01,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 00:03:01,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:01,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:01,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:03:01,054 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:01,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:01,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1098177517, now seen corresponding path program 1 times [2020-10-15 00:03:01,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:01,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480341537] [2020-10-15 00:03:01,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:01,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:01,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:01,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:03:01,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:01,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-15 00:03:01,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:01,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:03:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:03:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:03:01,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:01,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:01,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:01,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:01,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:01,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:01,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:03:01,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:01,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:01,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:01,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:01,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:01,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:01,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480341537] [2020-10-15 00:03:01,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:03:01,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 00:03:01,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924813755] [2020-10-15 00:03:01,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 00:03:01,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:01,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 00:03:01,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 00:03:01,155 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 3 states. [2020-10-15 00:03:01,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:01,193 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2020-10-15 00:03:01,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 00:03:01,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-15 00:03:01,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:01,195 INFO L225 Difference]: With dead ends: 28 [2020-10-15 00:03:01,195 INFO L226 Difference]: Without dead ends: 19 [2020-10-15 00:03:01,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 00:03:01,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-15 00:03:01,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-15 00:03:01,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-15 00:03:01,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-10-15 00:03:01,202 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 12 [2020-10-15 00:03:01,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:01,202 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-10-15 00:03:01,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 00:03:01,203 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-10-15 00:03:01,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 00:03:01,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:01,204 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:01,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:03:01,204 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:01,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:01,205 INFO L82 PathProgramCache]: Analyzing trace with hash -271942908, now seen corresponding path program 1 times [2020-10-15 00:03:01,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:01,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393816353] [2020-10-15 00:03:01,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:01,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:01,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:01,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:01,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:03:01,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:01,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-15 00:03:01,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:01,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:01,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:03:01,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:03:01,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 00:03:01,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:01,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:01,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:01,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:01,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:01,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:01,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:01,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:01,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:01,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:01,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393816353] [2020-10-15 00:03:01,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:01,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-15 00:03:01,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915709301] [2020-10-15 00:03:01,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 00:03:01,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:01,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 00:03:01,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:03:01,391 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 4 states. [2020-10-15 00:03:01,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:01,418 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2020-10-15 00:03:01,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 00:03:01,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-15 00:03:01,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:01,420 INFO L225 Difference]: With dead ends: 33 [2020-10-15 00:03:01,420 INFO L226 Difference]: Without dead ends: 21 [2020-10-15 00:03:01,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:03:01,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-15 00:03:01,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-15 00:03:01,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-15 00:03:01,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-10-15 00:03:01,428 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 16 [2020-10-15 00:03:01,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:01,428 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-10-15 00:03:01,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 00:03:01,429 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-10-15 00:03:01,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-15 00:03:01,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:01,430 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:01,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 00:03:01,430 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:01,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:01,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1379438335, now seen corresponding path program 2 times [2020-10-15 00:03:01,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:01,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060293462] [2020-10-15 00:03:01,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:01,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:01,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:01,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:01,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:03:01,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:01,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-15 00:03:01,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:01,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:03:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:03:01,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:01,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:01,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:01,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:01,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:01,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:01,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:01,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:01,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:01,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:01,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060293462] [2020-10-15 00:03:01,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:01,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:03:01,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286394180] [2020-10-15 00:03:01,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:03:01,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:01,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:03:01,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:03:01,633 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 5 states. [2020-10-15 00:03:01,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:01,667 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2020-10-15 00:03:01,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:03:01,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-15 00:03:01,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:01,669 INFO L225 Difference]: With dead ends: 35 [2020-10-15 00:03:01,669 INFO L226 Difference]: Without dead ends: 23 [2020-10-15 00:03:01,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:03:01,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-15 00:03:01,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-15 00:03:01,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-15 00:03:01,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-15 00:03:01,675 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-10-15 00:03:01,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:01,676 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-15 00:03:01,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:03:01,676 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-15 00:03:01,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 00:03:01,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:01,677 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:01,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 00:03:01,677 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:01,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:01,678 INFO L82 PathProgramCache]: Analyzing trace with hash -530654274, now seen corresponding path program 3 times [2020-10-15 00:03:01,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:01,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331260604] [2020-10-15 00:03:01,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:01,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:01,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:01,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:01,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:03:01,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:01,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-15 00:03:01,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:01,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:01,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:03:01,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:01,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:03:01,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:01,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:01,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:01,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:01,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:01,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:01,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:01,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:01,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:01,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:01,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331260604] [2020-10-15 00:03:01,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:01,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 00:03:01,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778436178] [2020-10-15 00:03:01,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:03:01,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:01,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:03:01,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:03:01,841 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 6 states. [2020-10-15 00:03:01,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:01,878 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2020-10-15 00:03:01,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:03:01,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-15 00:03:01,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:01,879 INFO L225 Difference]: With dead ends: 37 [2020-10-15 00:03:01,880 INFO L226 Difference]: Without dead ends: 25 [2020-10-15 00:03:01,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:03:01,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-15 00:03:01,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-15 00:03:01,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-15 00:03:01,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-10-15 00:03:01,886 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 20 [2020-10-15 00:03:01,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:01,886 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-10-15 00:03:01,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:03:01,887 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-10-15 00:03:01,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-15 00:03:01,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:01,887 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:01,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 00:03:01,888 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:01,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:01,888 INFO L82 PathProgramCache]: Analyzing trace with hash -892957893, now seen corresponding path program 4 times [2020-10-15 00:03:01,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:01,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475795835] [2020-10-15 00:03:01,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:01,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:01,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:01,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:01,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:03:01,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:01,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-15 00:03:01,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:01,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:01,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:03:01,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:01,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:03:01,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:02,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:02,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:02,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:02,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:02,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:02,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:02,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:02,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:02,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:02,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:02,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:02,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:02,028 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:02,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475795835] [2020-10-15 00:03:02,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:02,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 00:03:02,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001617807] [2020-10-15 00:03:02,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:03:02,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:02,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:03:02,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:03:02,031 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 7 states. [2020-10-15 00:03:02,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:02,071 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2020-10-15 00:03:02,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:03:02,071 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-15 00:03:02,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:02,072 INFO L225 Difference]: With dead ends: 39 [2020-10-15 00:03:02,073 INFO L226 Difference]: Without dead ends: 27 [2020-10-15 00:03:02,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:03:02,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-15 00:03:02,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-15 00:03:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-15 00:03:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-15 00:03:02,079 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2020-10-15 00:03:02,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:02,079 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-15 00:03:02,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:03:02,080 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-15 00:03:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-15 00:03:02,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:02,081 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:02,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 00:03:02,081 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:02,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:02,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1174384776, now seen corresponding path program 5 times [2020-10-15 00:03:02,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:02,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148728852] [2020-10-15 00:03:02,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:02,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:02,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:02,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:02,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:03:02,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:02,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-15 00:03:02,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:02,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:02,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:03:02,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:02,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:03:02,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:02,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:02,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:02,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:02,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:02,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:02,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:02,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:02,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:02,227 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:02,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148728852] [2020-10-15 00:03:02,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:02,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:03:02,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112916511] [2020-10-15 00:03:02,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:03:02,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:02,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:03:02,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:03:02,229 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 8 states. [2020-10-15 00:03:02,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:02,270 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-10-15 00:03:02,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:03:02,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-15 00:03:02,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:02,272 INFO L225 Difference]: With dead ends: 41 [2020-10-15 00:03:02,272 INFO L226 Difference]: Without dead ends: 29 [2020-10-15 00:03:02,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:03:02,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-15 00:03:02,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-15 00:03:02,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-15 00:03:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-15 00:03:02,278 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 24 [2020-10-15 00:03:02,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:02,278 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-15 00:03:02,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:03:02,279 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-15 00:03:02,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-15 00:03:02,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:02,280 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:02,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 00:03:02,280 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:02,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:02,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1042679691, now seen corresponding path program 6 times [2020-10-15 00:03:02,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:02,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074362303] [2020-10-15 00:03:02,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:02,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:02,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:02,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:02,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 00:03:02,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:02,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-15 00:03:02,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:02,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:03:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:03:02,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:02,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:02,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:02,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:02,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:02,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:02,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:02,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:02,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:02,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:02,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074362303] [2020-10-15 00:03:02,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:02,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:03:02,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224711653] [2020-10-15 00:03:02,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:03:02,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:02,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:03:02,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:03:02,469 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 9 states. [2020-10-15 00:03:02,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:02,518 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-10-15 00:03:02,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:03:02,519 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-15 00:03:02,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:02,520 INFO L225 Difference]: With dead ends: 43 [2020-10-15 00:03:02,520 INFO L226 Difference]: Without dead ends: 31 [2020-10-15 00:03:02,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:03:02,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-15 00:03:02,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-15 00:03:02,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-15 00:03:02,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-15 00:03:02,527 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 26 [2020-10-15 00:03:02,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:02,527 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-15 00:03:02,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:03:02,527 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-15 00:03:02,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-15 00:03:02,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:02,529 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:02,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 00:03:02,529 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:02,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:02,530 INFO L82 PathProgramCache]: Analyzing trace with hash 971855410, now seen corresponding path program 7 times [2020-10-15 00:03:02,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:02,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211252701] [2020-10-15 00:03:02,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:02,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:02,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:02,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:02,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:03:02,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:02,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-15 00:03:02,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:02,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:03:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:02,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:03:02,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:02,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:02,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:02,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:02,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:02,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:02,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:02,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:02,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:02,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:02,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:02,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:02,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211252701] [2020-10-15 00:03:02,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:02,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 00:03:02,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926477822] [2020-10-15 00:03:02,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:03:02,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:02,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:03:02,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:03:02,791 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 10 states. [2020-10-15 00:03:02,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:02,860 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2020-10-15 00:03:02,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:03:02,861 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-15 00:03:02,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:02,862 INFO L225 Difference]: With dead ends: 45 [2020-10-15 00:03:02,862 INFO L226 Difference]: Without dead ends: 33 [2020-10-15 00:03:02,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:03:02,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-15 00:03:02,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-15 00:03:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-15 00:03:02,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-15 00:03:02,868 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 28 [2020-10-15 00:03:02,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:02,868 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-15 00:03:02,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:03:02,868 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-15 00:03:02,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-15 00:03:02,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:02,869 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:02,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 00:03:02,870 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:02,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:02,870 INFO L82 PathProgramCache]: Analyzing trace with hash -90163025, now seen corresponding path program 8 times [2020-10-15 00:03:02,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:02,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801450714] [2020-10-15 00:03:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:02,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:02,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:03,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:03,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:03:03,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:03,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-15 00:03:03,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:03,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:03:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:03:03,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:03,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:03,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:03,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:03,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:03,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:03,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:03,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:03,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:03,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:03,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:03,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:03,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:03,154 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:03,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801450714] [2020-10-15 00:03:03,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:03,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 00:03:03,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086647625] [2020-10-15 00:03:03,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:03:03,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:03,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:03:03,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:03:03,156 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 11 states. [2020-10-15 00:03:03,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:03,215 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2020-10-15 00:03:03,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:03:03,216 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-15 00:03:03,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:03,216 INFO L225 Difference]: With dead ends: 47 [2020-10-15 00:03:03,216 INFO L226 Difference]: Without dead ends: 35 [2020-10-15 00:03:03,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:03:03,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-15 00:03:03,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-15 00:03:03,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-15 00:03:03,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-10-15 00:03:03,222 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 30 [2020-10-15 00:03:03,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:03,222 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-10-15 00:03:03,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:03:03,223 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-10-15 00:03:03,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-15 00:03:03,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:03,224 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:03,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 00:03:03,224 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:03,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:03,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1512337388, now seen corresponding path program 9 times [2020-10-15 00:03:03,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:03,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831101276] [2020-10-15 00:03:03,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:03,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:03,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:03,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:03,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:03:03,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:03,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-15 00:03:03,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:03,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:03,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:03:03,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:03,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:03:03,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:03,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:03,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:03,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:03,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:03,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:03,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:03,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:03,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:03,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:03,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:03,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:03,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:03,496 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:03,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831101276] [2020-10-15 00:03:03,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:03,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 00:03:03,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106601692] [2020-10-15 00:03:03,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:03:03,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:03,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:03:03,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:03:03,498 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 12 states. [2020-10-15 00:03:03,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:03,542 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-10-15 00:03:03,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:03:03,542 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-15 00:03:03,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:03,543 INFO L225 Difference]: With dead ends: 49 [2020-10-15 00:03:03,543 INFO L226 Difference]: Without dead ends: 37 [2020-10-15 00:03:03,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:03:03,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-15 00:03:03,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-15 00:03:03,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-15 00:03:03,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-10-15 00:03:03,548 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 32 [2020-10-15 00:03:03,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:03,549 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-10-15 00:03:03,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:03:03,549 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-10-15 00:03:03,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-15 00:03:03,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:03,550 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:03,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 00:03:03,550 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:03,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:03,551 INFO L82 PathProgramCache]: Analyzing trace with hash -378024983, now seen corresponding path program 10 times [2020-10-15 00:03:03,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:03,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088638029] [2020-10-15 00:03:03,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:03,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:03,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:03,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:03,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:03:03,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:03,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-15 00:03:03,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:03,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:03:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:03:03,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:03,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:03,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:03,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:03,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:03,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:03,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:03,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:03,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:03,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:03,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:03,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:03,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:03,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088638029] [2020-10-15 00:03:03,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:03,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 00:03:03,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104189920] [2020-10-15 00:03:03,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:03:03,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:03,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:03:03,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:03:03,870 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 13 states. [2020-10-15 00:03:03,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:03,950 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2020-10-15 00:03:03,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:03:03,951 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-10-15 00:03:03,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:03,951 INFO L225 Difference]: With dead ends: 51 [2020-10-15 00:03:03,952 INFO L226 Difference]: Without dead ends: 39 [2020-10-15 00:03:03,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:03:03,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-15 00:03:03,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-15 00:03:03,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-15 00:03:03,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-15 00:03:03,957 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 34 [2020-10-15 00:03:03,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:03,957 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-15 00:03:03,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:03:03,958 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-15 00:03:03,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-15 00:03:03,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:03,959 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:03,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 00:03:03,959 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:03,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:03,959 INFO L82 PathProgramCache]: Analyzing trace with hash -245097306, now seen corresponding path program 11 times [2020-10-15 00:03:03,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:03,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142846737] [2020-10-15 00:03:03,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:03,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:03,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:04,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:04,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 00:03:04,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:04,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-15 00:03:04,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:04,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:03:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:03:04,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:04,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:04,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:04,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:04,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:04,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:04,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:04,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:04,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:04,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:04,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:04,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:04,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:04,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142846737] [2020-10-15 00:03:04,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:04,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 00:03:04,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067426618] [2020-10-15 00:03:04,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:03:04,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:04,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:03:04,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:03:04,290 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 14 states. [2020-10-15 00:03:04,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:04,338 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-10-15 00:03:04,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 00:03:04,339 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-10-15 00:03:04,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:04,340 INFO L225 Difference]: With dead ends: 53 [2020-10-15 00:03:04,340 INFO L226 Difference]: Without dead ends: 41 [2020-10-15 00:03:04,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:03:04,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-15 00:03:04,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-15 00:03:04,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-15 00:03:04,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-10-15 00:03:04,345 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 36 [2020-10-15 00:03:04,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:04,345 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-10-15 00:03:04,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:03:04,346 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-10-15 00:03:04,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-15 00:03:04,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:04,346 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:04,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 00:03:04,347 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:04,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:04,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1350618589, now seen corresponding path program 12 times [2020-10-15 00:03:04,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:04,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771709279] [2020-10-15 00:03:04,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:04,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:04,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:04,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:04,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 00:03:04,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:04,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-15 00:03:04,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:04,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:03:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:03:04,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:04,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:04,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:04,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:04,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:04,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:04,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:04,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:04,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:04,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:04,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:04,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:04,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 13 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:04,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771709279] [2020-10-15 00:03:04,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:04,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 00:03:04,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622717412] [2020-10-15 00:03:04,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:03:04,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:04,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:03:04,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:03:04,742 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 15 states. [2020-10-15 00:03:04,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:04,820 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2020-10-15 00:03:04,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:03:04,820 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-10-15 00:03:04,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:04,821 INFO L225 Difference]: With dead ends: 55 [2020-10-15 00:03:04,821 INFO L226 Difference]: Without dead ends: 43 [2020-10-15 00:03:04,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:03:04,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-15 00:03:04,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-15 00:03:04,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-15 00:03:04,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-10-15 00:03:04,827 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 38 [2020-10-15 00:03:04,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:04,827 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-10-15 00:03:04,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:03:04,827 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-10-15 00:03:04,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-15 00:03:04,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:04,828 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:04,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 00:03:04,829 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:04,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:04,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1395317856, now seen corresponding path program 13 times [2020-10-15 00:03:04,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:04,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419618011] [2020-10-15 00:03:04,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:04,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:04,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:05,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:05,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 00:03:05,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:05,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-15 00:03:05,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:05,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:03:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:05,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:03:05,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:05,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:05,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:05,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:05,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:05,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:05,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:05,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:05,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:05,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:05,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:05,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:05,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419618011] [2020-10-15 00:03:05,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:05,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 00:03:05,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442171867] [2020-10-15 00:03:05,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:03:05,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:05,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:03:05,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:03:05,236 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 16 states. [2020-10-15 00:03:05,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:05,314 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-10-15 00:03:05,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:03:05,315 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2020-10-15 00:03:05,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:05,316 INFO L225 Difference]: With dead ends: 57 [2020-10-15 00:03:05,316 INFO L226 Difference]: Without dead ends: 45 [2020-10-15 00:03:05,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:03:05,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-15 00:03:05,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-15 00:03:05,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-15 00:03:05,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-10-15 00:03:05,321 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 40 [2020-10-15 00:03:05,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:05,321 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-10-15 00:03:05,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 00:03:05,322 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-10-15 00:03:05,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 00:03:05,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:05,322 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:05,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 00:03:05,323 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:05,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:05,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1164645539, now seen corresponding path program 14 times [2020-10-15 00:03:05,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:05,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900078338] [2020-10-15 00:03:05,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:05,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:05,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:05,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:05,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 00:03:05,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:05,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-15 00:03:05,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:05,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:03:05,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:05,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:03:05,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:05,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:05,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:05,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:05,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:05,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:05,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:05,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:05,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:05,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:05,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:05,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:05,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:05,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900078338] [2020-10-15 00:03:05,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:05,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 00:03:05,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114235204] [2020-10-15 00:03:05,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 00:03:05,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:05,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 00:03:05,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:03:05,858 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 17 states. [2020-10-15 00:03:05,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:05,934 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2020-10-15 00:03:05,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 00:03:05,935 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 42 [2020-10-15 00:03:05,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:05,936 INFO L225 Difference]: With dead ends: 59 [2020-10-15 00:03:05,936 INFO L226 Difference]: Without dead ends: 47 [2020-10-15 00:03:05,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:03:05,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-15 00:03:05,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-15 00:03:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-15 00:03:05,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-10-15 00:03:05,941 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 42 [2020-10-15 00:03:05,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:05,942 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-10-15 00:03:05,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 00:03:05,942 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-10-15 00:03:05,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 00:03:05,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:05,943 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:05,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 00:03:05,943 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:05,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:05,943 INFO L82 PathProgramCache]: Analyzing trace with hash -273207526, now seen corresponding path program 15 times [2020-10-15 00:03:05,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:05,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405872667] [2020-10-15 00:03:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:05,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:05,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:06,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:06,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 00:03:06,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:06,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-15 00:03:06,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:06,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:03:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:03:06,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:06,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:06,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:06,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:06,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:06,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:06,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:06,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:06,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:06,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:06,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:06,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:06,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 16 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:06,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405872667] [2020-10-15 00:03:06,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:06,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 00:03:06,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520684245] [2020-10-15 00:03:06,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 00:03:06,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:06,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 00:03:06,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:03:06,476 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 18 states. [2020-10-15 00:03:06,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:06,591 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-10-15 00:03:06,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 00:03:06,591 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 44 [2020-10-15 00:03:06,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:06,592 INFO L225 Difference]: With dead ends: 61 [2020-10-15 00:03:06,592 INFO L226 Difference]: Without dead ends: 49 [2020-10-15 00:03:06,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:03:06,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-15 00:03:06,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-15 00:03:06,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-15 00:03:06,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-10-15 00:03:06,597 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 44 [2020-10-15 00:03:06,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:06,598 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-10-15 00:03:06,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 00:03:06,598 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-10-15 00:03:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 00:03:06,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:06,598 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:06,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 00:03:06,599 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:06,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:06,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1700231063, now seen corresponding path program 16 times [2020-10-15 00:03:06,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:06,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713327516] [2020-10-15 00:03:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:06,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:06,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:06,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:06,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 00:03:06,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:06,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-15 00:03:06,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:06,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:03:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:03:06,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:07,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:07,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:07,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:07,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:07,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:07,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:07,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:07,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:07,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:07,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:07,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:07,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 17 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:07,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713327516] [2020-10-15 00:03:07,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:07,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-15 00:03:07,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792965058] [2020-10-15 00:03:07,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:03:07,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:07,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:03:07,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:03:07,146 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 19 states. [2020-10-15 00:03:07,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:07,244 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2020-10-15 00:03:07,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 00:03:07,244 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 46 [2020-10-15 00:03:07,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:07,245 INFO L225 Difference]: With dead ends: 63 [2020-10-15 00:03:07,245 INFO L226 Difference]: Without dead ends: 51 [2020-10-15 00:03:07,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:03:07,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-15 00:03:07,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-15 00:03:07,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-15 00:03:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-10-15 00:03:07,250 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 46 [2020-10-15 00:03:07,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:07,251 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-10-15 00:03:07,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:03:07,251 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-10-15 00:03:07,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-15 00:03:07,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:07,252 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:07,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 00:03:07,252 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:07,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:07,253 INFO L82 PathProgramCache]: Analyzing trace with hash -200829740, now seen corresponding path program 17 times [2020-10-15 00:03:07,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:07,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153795416] [2020-10-15 00:03:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:07,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:07,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:07,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:07,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 00:03:07,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:07,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-15 00:03:07,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:07,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:07,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:03:07,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:07,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 00:03:07,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:07,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:07,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:07,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:07,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:07,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:07,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:07,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:07,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:07,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:07,896 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 18 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:07,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153795416] [2020-10-15 00:03:07,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:07,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 00:03:07,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809353670] [2020-10-15 00:03:07,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 00:03:07,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:07,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 00:03:07,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:03:07,899 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 20 states. [2020-10-15 00:03:07,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:07,987 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2020-10-15 00:03:07,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 00:03:07,987 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 48 [2020-10-15 00:03:07,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:07,988 INFO L225 Difference]: With dead ends: 65 [2020-10-15 00:03:07,988 INFO L226 Difference]: Without dead ends: 53 [2020-10-15 00:03:07,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:03:07,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-15 00:03:07,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-15 00:03:07,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-15 00:03:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2020-10-15 00:03:07,994 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 48 [2020-10-15 00:03:07,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:07,994 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2020-10-15 00:03:07,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 00:03:07,994 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2020-10-15 00:03:07,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 00:03:07,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:07,995 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:07,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 00:03:07,996 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:07,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:07,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1759160623, now seen corresponding path program 18 times [2020-10-15 00:03:07,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:07,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796748174] [2020-10-15 00:03:07,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:08,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:08,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:08,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:08,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 00:03:08,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:08,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-15 00:03:08,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:08,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:08,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:03:08,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:08,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 00:03:08,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:08,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:08,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:08,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:08,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:08,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:08,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:08,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:08,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:08,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:08,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:08,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:08,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 19 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:08,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796748174] [2020-10-15 00:03:08,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:08,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 00:03:08,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547243614] [2020-10-15 00:03:08,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 00:03:08,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:08,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 00:03:08,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:03:08,608 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 21 states. [2020-10-15 00:03:08,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:08,701 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-10-15 00:03:08,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 00:03:08,701 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 50 [2020-10-15 00:03:08,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:08,702 INFO L225 Difference]: With dead ends: 67 [2020-10-15 00:03:08,702 INFO L226 Difference]: Without dead ends: 55 [2020-10-15 00:03:08,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:03:08,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-15 00:03:08,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-15 00:03:08,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-15 00:03:08,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-10-15 00:03:08,707 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 50 [2020-10-15 00:03:08,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:08,707 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-10-15 00:03:08,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 00:03:08,707 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-10-15 00:03:08,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:03:08,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:08,708 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:08,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 00:03:08,708 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:08,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:08,709 INFO L82 PathProgramCache]: Analyzing trace with hash -371552882, now seen corresponding path program 19 times [2020-10-15 00:03:08,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:08,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284657267] [2020-10-15 00:03:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:08,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:08,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:09,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:09,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 00:03:09,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:09,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-15 00:03:09,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:09,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:09,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 00:03:09,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:09,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 00:03:09,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:09,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:09,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:09,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:09,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:09,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:09,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:09,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:09,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:09,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:09,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:09,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:09,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:09,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284657267] [2020-10-15 00:03:09,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:09,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 00:03:09,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291657230] [2020-10-15 00:03:09,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 00:03:09,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:09,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 00:03:09,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:03:09,441 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 22 states. [2020-10-15 00:03:09,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:09,549 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-10-15 00:03:09,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 00:03:09,549 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 52 [2020-10-15 00:03:09,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:09,550 INFO L225 Difference]: With dead ends: 69 [2020-10-15 00:03:09,550 INFO L226 Difference]: Without dead ends: 57 [2020-10-15 00:03:09,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:03:09,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-15 00:03:09,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-15 00:03:09,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-15 00:03:09,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-10-15 00:03:09,555 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 52 [2020-10-15 00:03:09,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:09,555 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-10-15 00:03:09,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 00:03:09,555 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-10-15 00:03:09,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:03:09,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:09,556 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:09,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 00:03:09,556 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:09,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:09,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1679624459, now seen corresponding path program 20 times [2020-10-15 00:03:09,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:09,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076472443] [2020-10-15 00:03:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:09,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:09,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:09,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:09,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 00:03:09,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:09,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-15 00:03:09,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:09,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:03:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 00:03:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:10,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:10,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:10,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:10,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:10,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:10,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:10,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:10,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:10,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:10,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:10,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:10,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 21 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:10,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076472443] [2020-10-15 00:03:10,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:10,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-15 00:03:10,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801807413] [2020-10-15 00:03:10,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 00:03:10,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:10,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 00:03:10,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:03:10,413 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 23 states. [2020-10-15 00:03:10,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:10,557 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2020-10-15 00:03:10,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 00:03:10,560 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 54 [2020-10-15 00:03:10,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:10,561 INFO L225 Difference]: With dead ends: 71 [2020-10-15 00:03:10,561 INFO L226 Difference]: Without dead ends: 59 [2020-10-15 00:03:10,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:03:10,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-15 00:03:10,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-15 00:03:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-15 00:03:10,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-10-15 00:03:10,574 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 54 [2020-10-15 00:03:10,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:10,575 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-10-15 00:03:10,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 00:03:10,575 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-10-15 00:03:10,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 00:03:10,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:10,576 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:10,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 00:03:10,577 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:10,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:10,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1471060296, now seen corresponding path program 21 times [2020-10-15 00:03:10,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:10,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399676334] [2020-10-15 00:03:10,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:10,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:10,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:11,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:11,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 00:03:11,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:11,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-15 00:03:11,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:11,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:03:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 00:03:11,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:11,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:11,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:11,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:11,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:11,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:11,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:11,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:11,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:11,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:11,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:11,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:11,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 22 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:11,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399676334] [2020-10-15 00:03:11,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:11,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 00:03:11,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793251372] [2020-10-15 00:03:11,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 00:03:11,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:11,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 00:03:11,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:03:11,350 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 24 states. [2020-10-15 00:03:11,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:11,437 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2020-10-15 00:03:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 00:03:11,437 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 56 [2020-10-15 00:03:11,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:11,438 INFO L225 Difference]: With dead ends: 73 [2020-10-15 00:03:11,438 INFO L226 Difference]: Without dead ends: 61 [2020-10-15 00:03:11,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:03:11,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-15 00:03:11,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-15 00:03:11,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-15 00:03:11,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2020-10-15 00:03:11,442 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 56 [2020-10-15 00:03:11,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:11,442 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2020-10-15 00:03:11,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 00:03:11,442 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2020-10-15 00:03:11,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 00:03:11,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:11,447 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:11,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 00:03:11,448 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:11,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:11,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1390604731, now seen corresponding path program 22 times [2020-10-15 00:03:11,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:11,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604119463] [2020-10-15 00:03:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:11,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:11,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:11,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:11,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 00:03:11,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:11,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-15 00:03:11,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:11,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:03:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 00:03:11,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:12,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:12,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:12,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:12,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:12,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:12,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:12,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:12,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:12,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:12,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:12,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:12,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:12,154 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 23 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:12,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604119463] [2020-10-15 00:03:12,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:12,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-15 00:03:12,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830751706] [2020-10-15 00:03:12,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-15 00:03:12,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:12,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-15 00:03:12,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:03:12,157 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 25 states. [2020-10-15 00:03:12,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:12,277 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-10-15 00:03:12,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 00:03:12,278 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 58 [2020-10-15 00:03:12,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:12,279 INFO L225 Difference]: With dead ends: 75 [2020-10-15 00:03:12,280 INFO L226 Difference]: Without dead ends: 63 [2020-10-15 00:03:12,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:03:12,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-15 00:03:12,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-15 00:03:12,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-15 00:03:12,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2020-10-15 00:03:12,288 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 58 [2020-10-15 00:03:12,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:12,289 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2020-10-15 00:03:12,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-15 00:03:12,289 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2020-10-15 00:03:12,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:03:12,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:12,291 INFO L422 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:12,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 00:03:12,294 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:12,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:12,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1623341058, now seen corresponding path program 23 times [2020-10-15 00:03:12,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:12,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860526975] [2020-10-15 00:03:12,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:12,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:12,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:12,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:12,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 00:03:12,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:12,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-15 00:03:12,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:12,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:12,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 00:03:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 00:03:12,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:13,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:13,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:13,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:13,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:13,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:13,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:13,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:13,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:13,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 24 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:13,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860526975] [2020-10-15 00:03:13,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:13,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 00:03:13,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681750203] [2020-10-15 00:03:13,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 00:03:13,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:13,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 00:03:13,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:03:13,049 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 26 states. [2020-10-15 00:03:13,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:13,165 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2020-10-15 00:03:13,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 00:03:13,166 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 60 [2020-10-15 00:03:13,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:13,167 INFO L225 Difference]: With dead ends: 77 [2020-10-15 00:03:13,167 INFO L226 Difference]: Without dead ends: 65 [2020-10-15 00:03:13,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:03:13,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-15 00:03:13,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-15 00:03:13,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-15 00:03:13,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2020-10-15 00:03:13,170 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 60 [2020-10-15 00:03:13,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:13,171 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2020-10-15 00:03:13,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 00:03:13,171 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2020-10-15 00:03:13,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 00:03:13,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:13,172 INFO L422 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:13,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 00:03:13,172 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:13,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:13,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1077680513, now seen corresponding path program 24 times [2020-10-15 00:03:13,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:13,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813141218] [2020-10-15 00:03:13,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:13,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:13,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:13,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:13,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:03:13,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:13,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-10-15 00:03:13,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:13,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:13,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 00:03:13,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:13,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 00:03:13,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:13,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:13,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:13,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:13,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:13,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:13,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:13,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:13,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:13,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:13,976 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 25 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:13,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813141218] [2020-10-15 00:03:13,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:13,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-15 00:03:13,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217060087] [2020-10-15 00:03:13,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-15 00:03:13,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:13,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-15 00:03:13,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-10-15 00:03:13,978 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 27 states. [2020-10-15 00:03:14,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:14,095 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2020-10-15 00:03:14,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 00:03:14,095 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 62 [2020-10-15 00:03:14,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:14,096 INFO L225 Difference]: With dead ends: 79 [2020-10-15 00:03:14,096 INFO L226 Difference]: Without dead ends: 67 [2020-10-15 00:03:14,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-10-15 00:03:14,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-15 00:03:14,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-15 00:03:14,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-15 00:03:14,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-10-15 00:03:14,100 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 62 [2020-10-15 00:03:14,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:14,101 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-10-15 00:03:14,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-15 00:03:14,101 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-10-15 00:03:14,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 00:03:14,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:14,101 INFO L422 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:14,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 00:03:14,102 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:14,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:14,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1695803836, now seen corresponding path program 25 times [2020-10-15 00:03:14,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:14,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160561099] [2020-10-15 00:03:14,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:14,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:14,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:14,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:14,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 00:03:14,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:14,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-15 00:03:14,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:14,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:14,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 00:03:14,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 00:03:14,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:14,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:14,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:14,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:14,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:14,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:14,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:14,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:14,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:14,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:14,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:14,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 26 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:14,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160561099] [2020-10-15 00:03:14,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:14,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 00:03:14,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817328196] [2020-10-15 00:03:14,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 00:03:14,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:14,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 00:03:14,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:03:14,811 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 28 states. [2020-10-15 00:03:14,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:14,961 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2020-10-15 00:03:14,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-15 00:03:14,962 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 64 [2020-10-15 00:03:14,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:14,963 INFO L225 Difference]: With dead ends: 81 [2020-10-15 00:03:14,963 INFO L226 Difference]: Without dead ends: 69 [2020-10-15 00:03:14,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:03:14,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-15 00:03:14,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-15 00:03:14,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-15 00:03:14,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-10-15 00:03:14,967 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 64 [2020-10-15 00:03:14,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:14,967 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-10-15 00:03:14,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 00:03:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-10-15 00:03:14,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 00:03:14,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:14,968 INFO L422 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:14,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 00:03:14,969 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:14,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:14,969 INFO L82 PathProgramCache]: Analyzing trace with hash -160427591, now seen corresponding path program 26 times [2020-10-15 00:03:14,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:14,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026179785] [2020-10-15 00:03:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:14,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:14,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:15,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:15,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 00:03:15,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:15,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-15 00:03:15,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:15,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:15,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 00:03:15,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:15,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 00:03:15,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:15,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:15,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:15,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:15,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:15,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:15,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:15,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:15,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:15,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:15,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:15,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 27 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:15,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026179785] [2020-10-15 00:03:15,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:15,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-15 00:03:15,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976728134] [2020-10-15 00:03:15,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-15 00:03:15,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:15,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-15 00:03:15,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:03:15,854 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 29 states. [2020-10-15 00:03:16,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:16,001 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2020-10-15 00:03:16,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 00:03:16,001 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 66 [2020-10-15 00:03:16,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:16,002 INFO L225 Difference]: With dead ends: 83 [2020-10-15 00:03:16,003 INFO L226 Difference]: Without dead ends: 71 [2020-10-15 00:03:16,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:03:16,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-15 00:03:16,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-15 00:03:16,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-15 00:03:16,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2020-10-15 00:03:16,012 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 66 [2020-10-15 00:03:16,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:16,012 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2020-10-15 00:03:16,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-15 00:03:16,012 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2020-10-15 00:03:16,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 00:03:16,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:16,013 INFO L422 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:16,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 00:03:16,013 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:16,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:16,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1587401098, now seen corresponding path program 27 times [2020-10-15 00:03:16,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:16,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795648599] [2020-10-15 00:03:16,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:16,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:16,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:16,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:16,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 00:03:16,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:16,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-15 00:03:16,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:16,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 00:03:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 00:03:16,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:17,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:17,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:17,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:17,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:17,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:17,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:17,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:17,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:17,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 28 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:17,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795648599] [2020-10-15 00:03:17,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:17,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 00:03:17,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761437708] [2020-10-15 00:03:17,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 00:03:17,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:17,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 00:03:17,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:03:17,063 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand 30 states. [2020-10-15 00:03:17,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:17,258 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2020-10-15 00:03:17,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 00:03:17,259 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 68 [2020-10-15 00:03:17,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:17,260 INFO L225 Difference]: With dead ends: 85 [2020-10-15 00:03:17,261 INFO L226 Difference]: Without dead ends: 73 [2020-10-15 00:03:17,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:03:17,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-15 00:03:17,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-15 00:03:17,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-15 00:03:17,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-10-15 00:03:17,268 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 68 [2020-10-15 00:03:17,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:17,268 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-10-15 00:03:17,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 00:03:17,269 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-10-15 00:03:17,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 00:03:17,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:17,270 INFO L422 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:17,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 00:03:17,271 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:17,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:17,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1480593395, now seen corresponding path program 28 times [2020-10-15 00:03:17,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:17,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196125421] [2020-10-15 00:03:17,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:17,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:17,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:17,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:17,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 00:03:17,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:17,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-10-15 00:03:17,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:17,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:17,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 00:03:17,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:17,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 00:03:17,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:18,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:18,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:18,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:18,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:18,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:18,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:18,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:18,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 29 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:18,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196125421] [2020-10-15 00:03:18,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:18,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-15 00:03:18,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760516958] [2020-10-15 00:03:18,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-15 00:03:18,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:18,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-15 00:03:18,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-15 00:03:18,413 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 31 states. [2020-10-15 00:03:18,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:18,513 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2020-10-15 00:03:18,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 00:03:18,513 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 70 [2020-10-15 00:03:18,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:18,514 INFO L225 Difference]: With dead ends: 87 [2020-10-15 00:03:18,514 INFO L226 Difference]: Without dead ends: 75 [2020-10-15 00:03:18,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-15 00:03:18,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-15 00:03:18,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-15 00:03:18,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-15 00:03:18,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-10-15 00:03:18,519 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 70 [2020-10-15 00:03:18,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:18,519 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-10-15 00:03:18,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-15 00:03:18,519 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-10-15 00:03:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 00:03:18,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:18,520 INFO L422 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:18,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 00:03:18,521 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:18,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:18,521 INFO L82 PathProgramCache]: Analyzing trace with hash -819231184, now seen corresponding path program 29 times [2020-10-15 00:03:18,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:18,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297223198] [2020-10-15 00:03:18,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:18,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:18,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:18,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:18,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 00:03:18,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:18,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-15 00:03:18,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:18,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 00:03:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 00:03:18,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:19,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:19,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:19,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:19,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:19,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:19,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:19,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:19,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:19,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:19,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:19,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:19,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 30 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:19,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297223198] [2020-10-15 00:03:19,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:19,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 00:03:19,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419002489] [2020-10-15 00:03:19,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 00:03:19,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:19,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 00:03:19,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:03:19,376 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 32 states. [2020-10-15 00:03:19,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:19,504 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2020-10-15 00:03:19,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 00:03:19,505 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 72 [2020-10-15 00:03:19,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:19,506 INFO L225 Difference]: With dead ends: 89 [2020-10-15 00:03:19,506 INFO L226 Difference]: Without dead ends: 77 [2020-10-15 00:03:19,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:03:19,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-15 00:03:19,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-15 00:03:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-15 00:03:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2020-10-15 00:03:19,510 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 72 [2020-10-15 00:03:19,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:19,511 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2020-10-15 00:03:19,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 00:03:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2020-10-15 00:03:19,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 00:03:19,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:19,512 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:19,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 00:03:19,513 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:19,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:19,513 INFO L82 PathProgramCache]: Analyzing trace with hash 957505837, now seen corresponding path program 30 times [2020-10-15 00:03:19,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:19,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394079954] [2020-10-15 00:03:19,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:19,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:19,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:19,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:19,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 00:03:19,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:19,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-15 00:03:19,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:19,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 00:03:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 00:03:19,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:20,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:20,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:20,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:20,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:20,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:20,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:20,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:20,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:20,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:20,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 31 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:20,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394079954] [2020-10-15 00:03:20,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:20,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-15 00:03:20,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720423288] [2020-10-15 00:03:20,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-15 00:03:20,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:20,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-15 00:03:20,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 00:03:20,497 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand 33 states. [2020-10-15 00:03:20,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:20,672 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2020-10-15 00:03:20,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 00:03:20,673 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 74 [2020-10-15 00:03:20,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:20,674 INFO L225 Difference]: With dead ends: 91 [2020-10-15 00:03:20,674 INFO L226 Difference]: Without dead ends: 79 [2020-10-15 00:03:20,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 00:03:20,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-15 00:03:20,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-15 00:03:20,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-15 00:03:20,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2020-10-15 00:03:20,679 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 74 [2020-10-15 00:03:20,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:20,679 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2020-10-15 00:03:20,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-15 00:03:20,680 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2020-10-15 00:03:20,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 00:03:20,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:20,681 INFO L422 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:20,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 00:03:20,682 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:20,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:20,682 INFO L82 PathProgramCache]: Analyzing trace with hash -995200790, now seen corresponding path program 31 times [2020-10-15 00:03:20,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:20,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432911525] [2020-10-15 00:03:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:20,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:20,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:21,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:21,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 00:03:21,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:21,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-15 00:03:21,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:21,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:21,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-15 00:03:21,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:21,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 00:03:21,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:21,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:21,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:21,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:21,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:21,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:21,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:21,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:21,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:21,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:21,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:21,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:21,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 32 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:21,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432911525] [2020-10-15 00:03:21,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:21,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 00:03:21,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191921801] [2020-10-15 00:03:21,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 00:03:21,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:21,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 00:03:21,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:03:21,694 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand 34 states. [2020-10-15 00:03:21,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:21,815 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2020-10-15 00:03:21,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-15 00:03:21,815 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 76 [2020-10-15 00:03:21,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:21,816 INFO L225 Difference]: With dead ends: 93 [2020-10-15 00:03:21,816 INFO L226 Difference]: Without dead ends: 81 [2020-10-15 00:03:21,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:03:21,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-15 00:03:21,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-15 00:03:21,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-15 00:03:21,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2020-10-15 00:03:21,821 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 76 [2020-10-15 00:03:21,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:21,821 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2020-10-15 00:03:21,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 00:03:21,822 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2020-10-15 00:03:21,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 00:03:21,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:21,822 INFO L422 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:21,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 00:03:21,823 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:21,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:21,823 INFO L82 PathProgramCache]: Analyzing trace with hash -645560985, now seen corresponding path program 32 times [2020-10-15 00:03:21,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:21,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666320539] [2020-10-15 00:03:21,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:21,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:21,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:22,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:22,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 00:03:22,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:22,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-15 00:03:22,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:22,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:22,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-15 00:03:22,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:22,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 00:03:22,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:22,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:22,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:22,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:22,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:22,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:22,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:22,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:22,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:22,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:22,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 33 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:22,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666320539] [2020-10-15 00:03:22,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:22,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-15 00:03:22,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061339222] [2020-10-15 00:03:22,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-15 00:03:22,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:22,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-15 00:03:22,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 00:03:22,776 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand 35 states. [2020-10-15 00:03:22,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:22,925 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-10-15 00:03:22,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 00:03:22,928 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 78 [2020-10-15 00:03:22,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:22,929 INFO L225 Difference]: With dead ends: 95 [2020-10-15 00:03:22,929 INFO L226 Difference]: Without dead ends: 83 [2020-10-15 00:03:22,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 00:03:22,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-15 00:03:22,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-15 00:03:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-15 00:03:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2020-10-15 00:03:22,937 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 78 [2020-10-15 00:03:22,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:22,937 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2020-10-15 00:03:22,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-15 00:03:22,938 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2020-10-15 00:03:22,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 00:03:22,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:22,938 INFO L422 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:22,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 00:03:22,939 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:22,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:22,939 INFO L82 PathProgramCache]: Analyzing trace with hash 350842532, now seen corresponding path program 33 times [2020-10-15 00:03:22,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:22,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58281999] [2020-10-15 00:03:22,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:22,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:22,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:23,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:23,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 00:03:23,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:23,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-15 00:03:23,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:23,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-15 00:03:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:23,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-15 00:03:23,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:23,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:23,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:23,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:23,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:23,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:23,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:23,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:23,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:23,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:23,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:23,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:23,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 34 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:23,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58281999] [2020-10-15 00:03:23,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:23,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-15 00:03:23,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215524791] [2020-10-15 00:03:23,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-15 00:03:23,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:23,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-15 00:03:23,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:03:23,897 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand 36 states. [2020-10-15 00:03:24,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:24,052 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2020-10-15 00:03:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-15 00:03:24,052 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 80 [2020-10-15 00:03:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:24,053 INFO L225 Difference]: With dead ends: 97 [2020-10-15 00:03:24,053 INFO L226 Difference]: Without dead ends: 85 [2020-10-15 00:03:24,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 00:03:24,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-15 00:03:24,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-15 00:03:24,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-15 00:03:24,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2020-10-15 00:03:24,066 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 80 [2020-10-15 00:03:24,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:24,066 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2020-10-15 00:03:24,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-15 00:03:24,066 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2020-10-15 00:03:24,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 00:03:24,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:24,067 INFO L422 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:24,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 00:03:24,067 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:24,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:24,068 INFO L82 PathProgramCache]: Analyzing trace with hash 116915361, now seen corresponding path program 34 times [2020-10-15 00:03:24,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:24,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290707462] [2020-10-15 00:03:24,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:24,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:24,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:24,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:24,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 00:03:24,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:24,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-15 00:03:24,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:24,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:24,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-15 00:03:24,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:24,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 00:03:24,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:03:25,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:25,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:25,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:25,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:25,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:25,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:25,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:25,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:25,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:25,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:25,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:25,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:25,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 35 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:25,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290707462] [2020-10-15 00:03:25,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:25,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-15 00:03:25,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649830025] [2020-10-15 00:03:25,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-15 00:03:25,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:25,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-15 00:03:25,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 00:03:25,209 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand 37 states. [2020-10-15 00:03:25,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:25,371 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2020-10-15 00:03:25,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-15 00:03:25,373 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 82 [2020-10-15 00:03:25,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:25,374 INFO L225 Difference]: With dead ends: 99 [2020-10-15 00:03:25,374 INFO L226 Difference]: Without dead ends: 87 [2020-10-15 00:03:25,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 00:03:25,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-15 00:03:25,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-15 00:03:25,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-15 00:03:25,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2020-10-15 00:03:25,378 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 82 [2020-10-15 00:03:25,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:25,378 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2020-10-15 00:03:25,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-15 00:03:25,379 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2020-10-15 00:03:25,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 00:03:25,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:25,380 INFO L422 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:25,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-15 00:03:25,380 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:25,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:25,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1348796578, now seen corresponding path program 35 times [2020-10-15 00:03:25,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:25,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021198513] [2020-10-15 00:03:25,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:25,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:25,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:25,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:25,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 00:03:25,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-15 00:03:25,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:25,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-15 00:03:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 00:03:25,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:26,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:26,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:26,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:26,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:26,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:26,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:03:26,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:26,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:26,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:26,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:26,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:26,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 36 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:26,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021198513] [2020-10-15 00:03:26,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:26,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-15 00:03:26,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539066233] [2020-10-15 00:03:26,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-15 00:03:26,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:26,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-15 00:03:26,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:03:26,556 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand 38 states. [2020-10-15 00:03:26,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:26,711 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2020-10-15 00:03:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-15 00:03:26,712 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 84 [2020-10-15 00:03:26,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:26,712 INFO L225 Difference]: With dead ends: 101 [2020-10-15 00:03:26,713 INFO L226 Difference]: Without dead ends: 89 [2020-10-15 00:03:26,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 00:03:26,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-15 00:03:26,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-10-15 00:03:26,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-15 00:03:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2020-10-15 00:03:26,718 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 84 [2020-10-15 00:03:26,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:26,718 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2020-10-15 00:03:26,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-15 00:03:26,719 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2020-10-15 00:03:26,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 00:03:26,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:26,719 INFO L422 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:26,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 00:03:26,720 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:26,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:26,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1148696869, now seen corresponding path program 36 times [2020-10-15 00:03:26,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:26,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953486902] [2020-10-15 00:03:26,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:26,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:26,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:27,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:27,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 00:03:27,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:27,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-15 00:03:27,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:27,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-15 00:03:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-15 00:03:27,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:27,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:27,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:27,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:27,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:27,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:27,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:27,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:27,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:27,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:27,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 37 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:27,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953486902] [2020-10-15 00:03:27,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:27,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-15 00:03:27,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377119757] [2020-10-15 00:03:27,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-15 00:03:27,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:27,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-15 00:03:27,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 00:03:27,776 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand 39 states. [2020-10-15 00:03:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:27,938 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2020-10-15 00:03:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-15 00:03:27,939 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 86 [2020-10-15 00:03:27,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:27,940 INFO L225 Difference]: With dead ends: 103 [2020-10-15 00:03:27,940 INFO L226 Difference]: Without dead ends: 91 [2020-10-15 00:03:27,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 00:03:27,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-15 00:03:27,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-15 00:03:27,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-15 00:03:27,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2020-10-15 00:03:27,945 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 86 [2020-10-15 00:03:27,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:27,946 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2020-10-15 00:03:27,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-15 00:03:27,946 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2020-10-15 00:03:27,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 00:03:27,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:27,946 INFO L422 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:27,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 00:03:27,947 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:27,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:27,947 INFO L82 PathProgramCache]: Analyzing trace with hash -2126404840, now seen corresponding path program 37 times [2020-10-15 00:03:27,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:27,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937896775] [2020-10-15 00:03:27,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:27,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:27,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:28,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:28,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-15 00:03:28,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:28,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-15 00:03:28,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:28,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-15 00:03:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 00:03:28,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:29,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:29,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:29,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:29,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:29,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:29,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:29,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:29,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:29,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:29,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 38 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:29,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937896775] [2020-10-15 00:03:29,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:29,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-15 00:03:29,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910867941] [2020-10-15 00:03:29,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-15 00:03:29,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:29,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-15 00:03:29,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 00:03:29,229 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand 40 states. [2020-10-15 00:03:29,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:29,421 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2020-10-15 00:03:29,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-15 00:03:29,422 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 88 [2020-10-15 00:03:29,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:29,423 INFO L225 Difference]: With dead ends: 105 [2020-10-15 00:03:29,423 INFO L226 Difference]: Without dead ends: 93 [2020-10-15 00:03:29,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 00:03:29,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-15 00:03:29,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-15 00:03:29,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-15 00:03:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2020-10-15 00:03:29,428 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 88 [2020-10-15 00:03:29,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:29,429 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2020-10-15 00:03:29,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-15 00:03:29,429 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2020-10-15 00:03:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-15 00:03:29,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:29,430 INFO L422 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:29,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-15 00:03:29,430 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:29,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:29,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1105927147, now seen corresponding path program 38 times [2020-10-15 00:03:29,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:29,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196558622] [2020-10-15 00:03:29,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:29,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:29,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:29,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:29,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 00:03:29,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:29,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-15 00:03:29,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:29,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:29,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-15 00:03:29,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:29,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-15 00:03:29,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:30,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:30,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:30,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:30,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:30,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:30,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:30,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:30,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:30,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:30,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:30,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:30,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:30,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 39 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:30,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196558622] [2020-10-15 00:03:30,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:30,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-15 00:03:30,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456354897] [2020-10-15 00:03:30,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-15 00:03:30,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:30,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-15 00:03:30,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 00:03:30,637 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand 41 states. [2020-10-15 00:03:30,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:30,827 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions. [2020-10-15 00:03:30,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-15 00:03:30,828 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 90 [2020-10-15 00:03:30,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:30,829 INFO L225 Difference]: With dead ends: 107 [2020-10-15 00:03:30,829 INFO L226 Difference]: Without dead ends: 95 [2020-10-15 00:03:30,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 00:03:30,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-15 00:03:30,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-15 00:03:30,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-15 00:03:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2020-10-15 00:03:30,834 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 90 [2020-10-15 00:03:30,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:30,835 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2020-10-15 00:03:30,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-15 00:03:30,835 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2020-10-15 00:03:30,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-15 00:03:30,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:30,836 INFO L422 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:30,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-15 00:03:30,836 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:30,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:30,836 INFO L82 PathProgramCache]: Analyzing trace with hash 320592338, now seen corresponding path program 39 times [2020-10-15 00:03:30,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:30,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131623132] [2020-10-15 00:03:30,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:30,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:30,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:31,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:31,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 00:03:31,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:31,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-15 00:03:31,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:31,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:31,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-15 00:03:31,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:31,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-15 00:03:31,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:32,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:32,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:32,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:32,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:32,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:32,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:32,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:32,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:32,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:32,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:32,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:32,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 40 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:32,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131623132] [2020-10-15 00:03:32,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:32,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-15 00:03:32,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507447475] [2020-10-15 00:03:32,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-15 00:03:32,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:32,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-15 00:03:32,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 00:03:32,074 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand 42 states. [2020-10-15 00:03:32,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:32,214 INFO L93 Difference]: Finished difference Result 109 states and 116 transitions. [2020-10-15 00:03:32,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-15 00:03:32,214 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 92 [2020-10-15 00:03:32,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:32,215 INFO L225 Difference]: With dead ends: 109 [2020-10-15 00:03:32,216 INFO L226 Difference]: Without dead ends: 97 [2020-10-15 00:03:32,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 00:03:32,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-15 00:03:32,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-15 00:03:32,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-15 00:03:32,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2020-10-15 00:03:32,221 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 92 [2020-10-15 00:03:32,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:32,222 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2020-10-15 00:03:32,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-15 00:03:32,222 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2020-10-15 00:03:32,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 00:03:32,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:32,223 INFO L422 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:32,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-15 00:03:32,223 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:32,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:32,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1111249999, now seen corresponding path program 40 times [2020-10-15 00:03:32,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:32,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435226074] [2020-10-15 00:03:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:32,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:32,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:32,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:32,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-15 00:03:32,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:32,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-15 00:03:32,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:32,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:32,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-15 00:03:32,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 00:03:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:33,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:33,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:33,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:33,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:33,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:33,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:33,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:33,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:33,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:33,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:33,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:33,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 41 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:33,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435226074] [2020-10-15 00:03:33,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:33,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-15 00:03:33,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511168888] [2020-10-15 00:03:33,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-15 00:03:33,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:33,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-15 00:03:33,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 00:03:33,547 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand 43 states. [2020-10-15 00:03:33,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:33,763 INFO L93 Difference]: Finished difference Result 111 states and 118 transitions. [2020-10-15 00:03:33,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-15 00:03:33,763 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 94 [2020-10-15 00:03:33,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:33,764 INFO L225 Difference]: With dead ends: 111 [2020-10-15 00:03:33,764 INFO L226 Difference]: Without dead ends: 99 [2020-10-15 00:03:33,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 00:03:33,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-15 00:03:33,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-15 00:03:33,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-15 00:03:33,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 102 transitions. [2020-10-15 00:03:33,771 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 102 transitions. Word has length 94 [2020-10-15 00:03:33,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:33,773 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 102 transitions. [2020-10-15 00:03:33,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-15 00:03:33,773 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 102 transitions. [2020-10-15 00:03:33,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 00:03:33,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:33,774 INFO L422 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:33,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-15 00:03:33,775 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:33,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:33,776 INFO L82 PathProgramCache]: Analyzing trace with hash 724050828, now seen corresponding path program 41 times [2020-10-15 00:03:33,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:33,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870610352] [2020-10-15 00:03:33,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:33,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:33,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:34,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:34,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-15 00:03:34,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:34,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-15 00:03:34,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:34,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-15 00:03:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-15 00:03:34,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:35,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:35,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:35,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:35,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:35,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:35,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:35,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:35,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 42 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:35,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870610352] [2020-10-15 00:03:35,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:35,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-15 00:03:35,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582277464] [2020-10-15 00:03:35,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-15 00:03:35,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:35,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-15 00:03:35,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 00:03:35,147 INFO L87 Difference]: Start difference. First operand 99 states and 102 transitions. Second operand 44 states. [2020-10-15 00:03:35,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:35,306 INFO L93 Difference]: Finished difference Result 113 states and 120 transitions. [2020-10-15 00:03:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-15 00:03:35,307 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 96 [2020-10-15 00:03:35,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:35,308 INFO L225 Difference]: With dead ends: 113 [2020-10-15 00:03:35,308 INFO L226 Difference]: Without dead ends: 101 [2020-10-15 00:03:35,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 00:03:35,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-15 00:03:35,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-10-15 00:03:35,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-15 00:03:35,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2020-10-15 00:03:35,314 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 96 [2020-10-15 00:03:35,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:35,314 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2020-10-15 00:03:35,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-15 00:03:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2020-10-15 00:03:35,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-15 00:03:35,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:35,315 INFO L422 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:35,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-15 00:03:35,315 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:35,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:35,316 INFO L82 PathProgramCache]: Analyzing trace with hash -2007165047, now seen corresponding path program 42 times [2020-10-15 00:03:35,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:35,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028180044] [2020-10-15 00:03:35,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:35,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:35,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:35,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:35,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 00:03:35,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:35,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-15 00:03:35,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:35,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:35,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-15 00:03:35,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:35,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-15 00:03:35,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:36,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:36,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:36,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:36,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:36,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:36,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:36,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:36,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:36,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:36,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:36,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:36,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:36,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 43 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:36,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028180044] [2020-10-15 00:03:36,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:36,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-15 00:03:36,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434270230] [2020-10-15 00:03:36,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-15 00:03:36,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:36,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-15 00:03:36,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 00:03:36,745 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand 45 states. [2020-10-15 00:03:36,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:36,961 INFO L93 Difference]: Finished difference Result 115 states and 122 transitions. [2020-10-15 00:03:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-15 00:03:36,967 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 98 [2020-10-15 00:03:36,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:36,968 INFO L225 Difference]: With dead ends: 115 [2020-10-15 00:03:36,968 INFO L226 Difference]: Without dead ends: 103 [2020-10-15 00:03:36,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 00:03:36,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-15 00:03:36,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-15 00:03:36,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-15 00:03:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 106 transitions. [2020-10-15 00:03:36,972 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 106 transitions. Word has length 98 [2020-10-15 00:03:36,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:36,972 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 106 transitions. [2020-10-15 00:03:36,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-15 00:03:36,973 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 106 transitions. [2020-10-15 00:03:36,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 00:03:36,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:36,973 INFO L422 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:36,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-15 00:03:36,973 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:36,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:36,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1814364230, now seen corresponding path program 43 times [2020-10-15 00:03:36,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:36,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200482331] [2020-10-15 00:03:36,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:36,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:37,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:37,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:37,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 00:03:37,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:37,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-15 00:03:37,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:37,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-15 00:03:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 00:03:37,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:38,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:38,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:38,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:38,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:38,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:38,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:38,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:38,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:38,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:38,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:38,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:38,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 44 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:38,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200482331] [2020-10-15 00:03:38,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:38,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-15 00:03:38,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931800762] [2020-10-15 00:03:38,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-15 00:03:38,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:38,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-15 00:03:38,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-10-15 00:03:38,455 INFO L87 Difference]: Start difference. First operand 103 states and 106 transitions. Second operand 46 states. [2020-10-15 00:03:38,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:38,690 INFO L93 Difference]: Finished difference Result 117 states and 124 transitions. [2020-10-15 00:03:38,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-15 00:03:38,690 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 100 [2020-10-15 00:03:38,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:38,691 INFO L225 Difference]: With dead ends: 117 [2020-10-15 00:03:38,691 INFO L226 Difference]: Without dead ends: 105 [2020-10-15 00:03:38,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-10-15 00:03:38,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-15 00:03:38,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-10-15 00:03:38,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-15 00:03:38,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2020-10-15 00:03:38,696 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 100 [2020-10-15 00:03:38,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:38,697 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 108 transitions. [2020-10-15 00:03:38,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-15 00:03:38,697 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 108 transitions. [2020-10-15 00:03:38,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 00:03:38,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:38,698 INFO L422 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:38,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-15 00:03:38,698 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:38,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:38,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2106961347, now seen corresponding path program 44 times [2020-10-15 00:03:38,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:38,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141653778] [2020-10-15 00:03:38,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:38,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:38,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:39,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:39,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 00:03:39,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:39,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-10-15 00:03:39,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:39,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:39,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-15 00:03:39,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:39,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-15 00:03:39,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:40,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:40,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:40,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:40,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:40,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:40,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:40,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:40,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:40,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 45 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:40,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141653778] [2020-10-15 00:03:40,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:40,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-15 00:03:40,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242501069] [2020-10-15 00:03:40,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-15 00:03:40,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:40,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-15 00:03:40,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-10-15 00:03:40,243 INFO L87 Difference]: Start difference. First operand 105 states and 108 transitions. Second operand 47 states. [2020-10-15 00:03:40,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:40,472 INFO L93 Difference]: Finished difference Result 119 states and 126 transitions. [2020-10-15 00:03:40,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-15 00:03:40,472 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 102 [2020-10-15 00:03:40,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:40,474 INFO L225 Difference]: With dead ends: 119 [2020-10-15 00:03:40,474 INFO L226 Difference]: Without dead ends: 107 [2020-10-15 00:03:40,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-10-15 00:03:40,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-15 00:03:40,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-15 00:03:40,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-15 00:03:40,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 110 transitions. [2020-10-15 00:03:40,479 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 110 transitions. Word has length 102 [2020-10-15 00:03:40,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:40,479 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 110 transitions. [2020-10-15 00:03:40,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-15 00:03:40,479 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 110 transitions. [2020-10-15 00:03:40,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 00:03:40,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:40,480 INFO L422 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:40,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-15 00:03:40,481 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:40,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:40,481 INFO L82 PathProgramCache]: Analyzing trace with hash -175050752, now seen corresponding path program 45 times [2020-10-15 00:03:40,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:40,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014580068] [2020-10-15 00:03:40,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:40,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:40,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:41,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:41,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 00:03:41,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:41,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-10-15 00:03:41,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:41,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-15 00:03:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-15 00:03:41,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:42,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:42,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:42,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:42,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:42,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:42,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:42,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:42,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:42,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:42,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:42,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:42,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 46 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:42,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014580068] [2020-10-15 00:03:42,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:42,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-15 00:03:42,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659007851] [2020-10-15 00:03:42,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-15 00:03:42,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:42,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-15 00:03:42,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-10-15 00:03:42,139 INFO L87 Difference]: Start difference. First operand 107 states and 110 transitions. Second operand 48 states. [2020-10-15 00:03:42,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:42,374 INFO L93 Difference]: Finished difference Result 121 states and 128 transitions. [2020-10-15 00:03:42,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-15 00:03:42,375 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 104 [2020-10-15 00:03:42,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:42,376 INFO L225 Difference]: With dead ends: 121 [2020-10-15 00:03:42,376 INFO L226 Difference]: Without dead ends: 109 [2020-10-15 00:03:42,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-10-15 00:03:42,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-15 00:03:42,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-15 00:03:42,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-15 00:03:42,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2020-10-15 00:03:42,385 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 104 [2020-10-15 00:03:42,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:42,385 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2020-10-15 00:03:42,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-15 00:03:42,385 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2020-10-15 00:03:42,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-15 00:03:42,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:42,386 INFO L422 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:42,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-15 00:03:42,386 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:42,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:42,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1539610365, now seen corresponding path program 46 times [2020-10-15 00:03:42,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:42,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943743293] [2020-10-15 00:03:42,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:42,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:42,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:42,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:42,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 00:03:42,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:42,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-15 00:03:42,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:42,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-15 00:03:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-15 00:03:42,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:44,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:44,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:44,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:44,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:44,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:44,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:44,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:44,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:44,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:44,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:44,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:44,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 47 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:44,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943743293] [2020-10-15 00:03:44,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:44,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-15 00:03:44,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772244571] [2020-10-15 00:03:44,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-15 00:03:44,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:44,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-15 00:03:44,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 00:03:44,109 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand 49 states. [2020-10-15 00:03:44,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:44,348 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2020-10-15 00:03:44,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-15 00:03:44,349 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 106 [2020-10-15 00:03:44,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:44,350 INFO L225 Difference]: With dead ends: 123 [2020-10-15 00:03:44,350 INFO L226 Difference]: Without dead ends: 111 [2020-10-15 00:03:44,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 00:03:44,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-15 00:03:44,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-10-15 00:03:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-15 00:03:44,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 114 transitions. [2020-10-15 00:03:44,356 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 114 transitions. Word has length 106 [2020-10-15 00:03:44,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:44,356 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 114 transitions. [2020-10-15 00:03:44,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-15 00:03:44,356 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 114 transitions. [2020-10-15 00:03:44,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 00:03:44,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:44,357 INFO L422 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:44,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-15 00:03:44,357 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:44,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:44,358 INFO L82 PathProgramCache]: Analyzing trace with hash 61502138, now seen corresponding path program 47 times [2020-10-15 00:03:44,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:44,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335258931] [2020-10-15 00:03:44,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:44,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:44,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:44,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:44,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 00:03:44,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:44,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-15 00:03:44,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:44,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:44,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-15 00:03:44,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:44,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-15 00:03:44,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:46,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:46,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:46,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:46,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:46,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:46,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:46,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:46,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:46,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:46,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:46,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:46,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 48 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:46,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335258931] [2020-10-15 00:03:46,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:46,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-15 00:03:46,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524224497] [2020-10-15 00:03:46,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-15 00:03:46,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:46,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-15 00:03:46,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-10-15 00:03:46,128 INFO L87 Difference]: Start difference. First operand 111 states and 114 transitions. Second operand 50 states. [2020-10-15 00:03:46,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:46,291 INFO L93 Difference]: Finished difference Result 125 states and 132 transitions. [2020-10-15 00:03:46,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-15 00:03:46,292 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 108 [2020-10-15 00:03:46,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:46,293 INFO L225 Difference]: With dead ends: 125 [2020-10-15 00:03:46,293 INFO L226 Difference]: Without dead ends: 113 [2020-10-15 00:03:46,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-10-15 00:03:46,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-15 00:03:46,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-15 00:03:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-15 00:03:46,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2020-10-15 00:03:46,298 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 108 [2020-10-15 00:03:46,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:46,299 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2020-10-15 00:03:46,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-15 00:03:46,299 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2020-10-15 00:03:46,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 00:03:46,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:46,300 INFO L422 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:46,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-15 00:03:46,300 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:46,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:46,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1233670967, now seen corresponding path program 48 times [2020-10-15 00:03:46,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:46,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127666429] [2020-10-15 00:03:46,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:46,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:46,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:46,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:46,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-15 00:03:46,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:46,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-15 00:03:46,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:46,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:46,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-15 00:03:46,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:46,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-15 00:03:46,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:48,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:48,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:48,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:48,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:48,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:48,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:48,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:48,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:48,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 49 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:48,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127666429] [2020-10-15 00:03:48,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:48,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-15 00:03:48,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304132580] [2020-10-15 00:03:48,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-15 00:03:48,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:48,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-15 00:03:48,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-10-15 00:03:48,223 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand 51 states. [2020-10-15 00:03:48,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:48,480 INFO L93 Difference]: Finished difference Result 127 states and 134 transitions. [2020-10-15 00:03:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-15 00:03:48,487 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 110 [2020-10-15 00:03:48,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:48,488 INFO L225 Difference]: With dead ends: 127 [2020-10-15 00:03:48,488 INFO L226 Difference]: Without dead ends: 115 [2020-10-15 00:03:48,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-10-15 00:03:48,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-15 00:03:48,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-15 00:03:48,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-15 00:03:48,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 118 transitions. [2020-10-15 00:03:48,492 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 118 transitions. Word has length 110 [2020-10-15 00:03:48,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:48,492 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 118 transitions. [2020-10-15 00:03:48,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-15 00:03:48,492 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 118 transitions. [2020-10-15 00:03:48,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-15 00:03:48,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:48,493 INFO L422 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:48,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-15 00:03:48,493 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:48,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:48,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1888483212, now seen corresponding path program 49 times [2020-10-15 00:03:48,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:48,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053230882] [2020-10-15 00:03:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:48,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:48,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:49,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:49,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 00:03:49,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:49,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-10-15 00:03:49,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:49,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-15 00:03:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 00:03:49,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:50,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:50,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:50,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:50,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:50,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:50,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:50,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:50,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:50,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:50,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 50 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:50,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053230882] [2020-10-15 00:03:50,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:50,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-15 00:03:50,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752352064] [2020-10-15 00:03:50,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-15 00:03:50,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:50,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-15 00:03:50,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-10-15 00:03:50,400 INFO L87 Difference]: Start difference. First operand 115 states and 118 transitions. Second operand 52 states. [2020-10-15 00:03:50,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:50,651 INFO L93 Difference]: Finished difference Result 129 states and 136 transitions. [2020-10-15 00:03:50,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-15 00:03:50,652 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 112 [2020-10-15 00:03:50,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:50,653 INFO L225 Difference]: With dead ends: 129 [2020-10-15 00:03:50,654 INFO L226 Difference]: Without dead ends: 117 [2020-10-15 00:03:50,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-10-15 00:03:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-15 00:03:50,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-10-15 00:03:50,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-15 00:03:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2020-10-15 00:03:50,659 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 112 [2020-10-15 00:03:50,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:50,659 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2020-10-15 00:03:50,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-15 00:03:50,660 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2020-10-15 00:03:50,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 00:03:50,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:50,661 INFO L422 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:50,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-15 00:03:50,661 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:50,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:50,661 INFO L82 PathProgramCache]: Analyzing trace with hash -96509327, now seen corresponding path program 50 times [2020-10-15 00:03:50,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:50,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503681783] [2020-10-15 00:03:50,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:50,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:50,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:51,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:51,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-15 00:03:51,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:51,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-10-15 00:03:51,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:51,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-15 00:03:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 00:03:51,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:52,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:52,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:52,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:52,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:52,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:52,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:52,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:52,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:52,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:52,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:52,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:52,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 51 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:52,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503681783] [2020-10-15 00:03:52,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:52,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-15 00:03:52,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256662706] [2020-10-15 00:03:52,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-15 00:03:52,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:52,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-15 00:03:52,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-10-15 00:03:52,681 INFO L87 Difference]: Start difference. First operand 117 states and 120 transitions. Second operand 53 states. [2020-10-15 00:03:52,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:52,908 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2020-10-15 00:03:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-15 00:03:52,911 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 114 [2020-10-15 00:03:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:52,912 INFO L225 Difference]: With dead ends: 131 [2020-10-15 00:03:52,912 INFO L226 Difference]: Without dead ends: 119 [2020-10-15 00:03:52,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-10-15 00:03:52,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-15 00:03:52,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2020-10-15 00:03:52,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-15 00:03:52,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 122 transitions. [2020-10-15 00:03:52,922 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 122 transitions. Word has length 114 [2020-10-15 00:03:52,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:52,923 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 122 transitions. [2020-10-15 00:03:52,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-15 00:03:52,923 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 122 transitions. [2020-10-15 00:03:52,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-15 00:03:52,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:52,924 INFO L422 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:52,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-15 00:03:52,924 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:52,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:52,924 INFO L82 PathProgramCache]: Analyzing trace with hash -291491538, now seen corresponding path program 51 times [2020-10-15 00:03:52,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:52,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533245927] [2020-10-15 00:03:52,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:52,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:52,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:53,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:53,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 00:03:53,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:53,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 725 [2020-10-15 00:03:53,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:53,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:53,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-15 00:03:53,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:53,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-15 00:03:53,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:55,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:55,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:55,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:55,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:55,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:55,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:55,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:55,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:55,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:55,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:55,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:55,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:55,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 52 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:55,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533245927] [2020-10-15 00:03:55,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:55,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-15 00:03:55,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421730658] [2020-10-15 00:03:55,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-15 00:03:55,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:55,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-15 00:03:55,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2020-10-15 00:03:55,084 INFO L87 Difference]: Start difference. First operand 119 states and 122 transitions. Second operand 54 states. [2020-10-15 00:03:55,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:55,365 INFO L93 Difference]: Finished difference Result 133 states and 140 transitions. [2020-10-15 00:03:55,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-15 00:03:55,366 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 116 [2020-10-15 00:03:55,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:55,367 INFO L225 Difference]: With dead ends: 133 [2020-10-15 00:03:55,367 INFO L226 Difference]: Without dead ends: 121 [2020-10-15 00:03:55,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2020-10-15 00:03:55,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-15 00:03:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-10-15 00:03:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-15 00:03:55,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 124 transitions. [2020-10-15 00:03:55,377 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 124 transitions. Word has length 116 [2020-10-15 00:03:55,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:55,377 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 124 transitions. [2020-10-15 00:03:55,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-15 00:03:55,377 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 124 transitions. [2020-10-15 00:03:55,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 00:03:55,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:55,379 INFO L422 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:55,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-15 00:03:55,380 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:55,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:55,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1309164715, now seen corresponding path program 52 times [2020-10-15 00:03:55,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:55,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917322084] [2020-10-15 00:03:55,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:55,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:55,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:56,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:56,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 00:03:56,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:56,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1588 [2020-10-15 00:03:56,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:56,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-15 00:03:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-15 00:03:56,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:58,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:58,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:58,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:58,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:58,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:58,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:58,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:58,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:58,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:58,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:58,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:58,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:58,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 53 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:58,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917322084] [2020-10-15 00:03:58,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:58,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-15 00:03:58,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070581164] [2020-10-15 00:03:58,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-15 00:03:58,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:58,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-15 00:03:58,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2020-10-15 00:03:58,540 INFO L87 Difference]: Start difference. First operand 121 states and 124 transitions. Second operand 55 states. [2020-10-15 00:03:58,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:58,734 INFO L93 Difference]: Finished difference Result 135 states and 142 transitions. [2020-10-15 00:03:58,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-15 00:03:58,735 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 118 [2020-10-15 00:03:58,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:58,736 INFO L225 Difference]: With dead ends: 135 [2020-10-15 00:03:58,736 INFO L226 Difference]: Without dead ends: 123 [2020-10-15 00:03:58,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2020-10-15 00:03:58,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-15 00:03:58,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-15 00:03:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-15 00:03:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 126 transitions. [2020-10-15 00:03:58,741 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 126 transitions. Word has length 118 [2020-10-15 00:03:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:58,741 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 126 transitions. [2020-10-15 00:03:58,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-15 00:03:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 126 transitions. [2020-10-15 00:03:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 00:03:58,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:58,742 INFO L422 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:58,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-15 00:03:58,742 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:58,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:58,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1941531880, now seen corresponding path program 53 times [2020-10-15 00:03:58,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:58,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713364652] [2020-10-15 00:03:58,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:58,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:58,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:59,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:59,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 00:03:59,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:03:59,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-10-15 00:03:59,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:59,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:59,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-15 00:03:59,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:59,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-15 00:03:59,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:01,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:01,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:01,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:01,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:01,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:01,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:01,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:01,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:01,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:01,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:01,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 54 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:01,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713364652] [2020-10-15 00:04:01,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:01,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-15 00:04:01,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202522768] [2020-10-15 00:04:01,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-15 00:04:01,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:01,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-15 00:04:01,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2020-10-15 00:04:01,021 INFO L87 Difference]: Start difference. First operand 123 states and 126 transitions. Second operand 56 states. [2020-10-15 00:04:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:01,299 INFO L93 Difference]: Finished difference Result 137 states and 144 transitions. [2020-10-15 00:04:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-15 00:04:01,300 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 120 [2020-10-15 00:04:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:01,301 INFO L225 Difference]: With dead ends: 137 [2020-10-15 00:04:01,301 INFO L226 Difference]: Without dead ends: 125 [2020-10-15 00:04:01,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2020-10-15 00:04:01,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-15 00:04:01,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-15 00:04:01,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-15 00:04:01,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 128 transitions. [2020-10-15 00:04:01,305 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 128 transitions. Word has length 120 [2020-10-15 00:04:01,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:01,306 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 128 transitions. [2020-10-15 00:04:01,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-15 00:04:01,306 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 128 transitions. [2020-10-15 00:04:01,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 00:04:01,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:01,307 INFO L422 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:01,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-15 00:04:01,307 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:01,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:01,307 INFO L82 PathProgramCache]: Analyzing trace with hash -238978587, now seen corresponding path program 54 times [2020-10-15 00:04:01,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:01,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584323280] [2020-10-15 00:04:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:01,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:01,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:02,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:02,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 00:04:02,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:02,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 905 [2020-10-15 00:04:02,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:02,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-10-15 00:04:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-15 00:04:02,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:03,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:03,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:03,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:03,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:03,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:03,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:03,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:03,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:03,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:03,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:03,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 55 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:03,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584323280] [2020-10-15 00:04:03,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:03,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-15 00:04:03,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682870509] [2020-10-15 00:04:03,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-15 00:04:03,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:03,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-15 00:04:03,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2020-10-15 00:04:03,870 INFO L87 Difference]: Start difference. First operand 125 states and 128 transitions. Second operand 57 states. [2020-10-15 00:04:04,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:04,163 INFO L93 Difference]: Finished difference Result 139 states and 146 transitions. [2020-10-15 00:04:04,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-15 00:04:04,163 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 122 [2020-10-15 00:04:04,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:04,164 INFO L225 Difference]: With dead ends: 139 [2020-10-15 00:04:04,164 INFO L226 Difference]: Without dead ends: 127 [2020-10-15 00:04:04,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2020-10-15 00:04:04,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-15 00:04:04,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-10-15 00:04:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-15 00:04:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 130 transitions. [2020-10-15 00:04:04,169 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 130 transitions. Word has length 122 [2020-10-15 00:04:04,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:04,169 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 130 transitions. [2020-10-15 00:04:04,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-15 00:04:04,170 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 130 transitions. [2020-10-15 00:04:04,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-15 00:04:04,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:04,170 INFO L422 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:04,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-15 00:04:04,171 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:04,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:04,171 INFO L82 PathProgramCache]: Analyzing trace with hash 234503074, now seen corresponding path program 55 times [2020-10-15 00:04:04,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:04,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788582758] [2020-10-15 00:04:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:04,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:04,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:04,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-15 00:04:04,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:04,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-15 00:04:04,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:04,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:04,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 57 [2020-10-15 00:04:04,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:04,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-15 00:04:04,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:06,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:06,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:06,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:06,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:06,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:06,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:06,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:06,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:06,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:06,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:06,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:06,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 56 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:06,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788582758] [2020-10-15 00:04:06,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:06,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-15 00:04:06,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209680358] [2020-10-15 00:04:06,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-15 00:04:06,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:06,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-15 00:04:06,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2020-10-15 00:04:06,631 INFO L87 Difference]: Start difference. First operand 127 states and 130 transitions. Second operand 58 states. [2020-10-15 00:04:06,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:06,927 INFO L93 Difference]: Finished difference Result 141 states and 148 transitions. [2020-10-15 00:04:06,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-15 00:04:06,927 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 124 [2020-10-15 00:04:06,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:06,929 INFO L225 Difference]: With dead ends: 141 [2020-10-15 00:04:06,929 INFO L226 Difference]: Without dead ends: 129 [2020-10-15 00:04:06,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2020-10-15 00:04:06,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-15 00:04:06,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2020-10-15 00:04:06,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-15 00:04:06,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2020-10-15 00:04:06,934 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 124 [2020-10-15 00:04:06,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:06,935 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2020-10-15 00:04:06,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-15 00:04:06,935 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2020-10-15 00:04:06,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 00:04:06,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:06,936 INFO L422 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:06,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-15 00:04:06,936 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:06,937 INFO L82 PathProgramCache]: Analyzing trace with hash -16154081, now seen corresponding path program 56 times [2020-10-15 00:04:06,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:06,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886460984] [2020-10-15 00:04:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:06,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:06,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:07,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:07,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-15 00:04:07,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:07,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 772 [2020-10-15 00:04:07,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:07,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-15 00:04:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-15 00:04:07,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:09,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:09,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:09,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:09,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:09,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:09,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:09,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:09,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:09,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:09,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:09,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:09,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 57 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:09,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886460984] [2020-10-15 00:04:09,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:09,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-15 00:04:09,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652681491] [2020-10-15 00:04:09,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-15 00:04:09,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:09,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-15 00:04:09,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2020-10-15 00:04:09,446 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand 59 states. [2020-10-15 00:04:09,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:09,656 INFO L93 Difference]: Finished difference Result 143 states and 150 transitions. [2020-10-15 00:04:09,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-15 00:04:09,657 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 126 [2020-10-15 00:04:09,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:09,658 INFO L225 Difference]: With dead ends: 143 [2020-10-15 00:04:09,658 INFO L226 Difference]: Without dead ends: 131 [2020-10-15 00:04:09,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2020-10-15 00:04:09,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-15 00:04:09,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-10-15 00:04:09,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-15 00:04:09,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 134 transitions. [2020-10-15 00:04:09,666 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 134 transitions. Word has length 126 [2020-10-15 00:04:09,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:09,667 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 134 transitions. [2020-10-15 00:04:09,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-15 00:04:09,667 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 134 transitions. [2020-10-15 00:04:09,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-15 00:04:09,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:09,668 INFO L422 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:09,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-15 00:04:09,668 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:09,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:09,668 INFO L82 PathProgramCache]: Analyzing trace with hash -379511460, now seen corresponding path program 57 times [2020-10-15 00:04:09,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:09,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898830629] [2020-10-15 00:04:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:09,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:09,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:10,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:10,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-15 00:04:10,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:10,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 847 [2020-10-15 00:04:10,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:10,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-15 00:04:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-15 00:04:10,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:12,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:12,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:12,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:12,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:12,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:12,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:12,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:12,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:12,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:12,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:12,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:12,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 58 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:12,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898830629] [2020-10-15 00:04:12,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:12,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-15 00:04:12,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715078874] [2020-10-15 00:04:12,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-15 00:04:12,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:12,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-15 00:04:12,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2020-10-15 00:04:12,324 INFO L87 Difference]: Start difference. First operand 131 states and 134 transitions. Second operand 60 states. [2020-10-15 00:04:12,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:12,632 INFO L93 Difference]: Finished difference Result 145 states and 152 transitions. [2020-10-15 00:04:12,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-15 00:04:12,632 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 128 [2020-10-15 00:04:12,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:12,634 INFO L225 Difference]: With dead ends: 145 [2020-10-15 00:04:12,634 INFO L226 Difference]: Without dead ends: 133 [2020-10-15 00:04:12,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2020-10-15 00:04:12,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-15 00:04:12,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2020-10-15 00:04:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-15 00:04:12,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 136 transitions. [2020-10-15 00:04:12,638 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 136 transitions. Word has length 128 [2020-10-15 00:04:12,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:12,639 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 136 transitions. [2020-10-15 00:04:12,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-15 00:04:12,639 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 136 transitions. [2020-10-15 00:04:12,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-15 00:04:12,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:12,640 INFO L422 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:12,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-15 00:04:12,640 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:12,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:12,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1673601703, now seen corresponding path program 58 times [2020-10-15 00:04:12,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:12,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393476390] [2020-10-15 00:04:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:12,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:12,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:13,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:13,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-15 00:04:13,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:13,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-10-15 00:04:13,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:13,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:13,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 60 [2020-10-15 00:04:13,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:13,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-15 00:04:13,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:15,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:15,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:15,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:15,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:15,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:15,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:15,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:15,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:15,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:15,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 59 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:15,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393476390] [2020-10-15 00:04:15,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:15,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-10-15 00:04:15,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909653164] [2020-10-15 00:04:15,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-15 00:04:15,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:15,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-15 00:04:15,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2020-10-15 00:04:15,372 INFO L87 Difference]: Start difference. First operand 133 states and 136 transitions. Second operand 61 states. [2020-10-15 00:04:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:15,693 INFO L93 Difference]: Finished difference Result 147 states and 154 transitions. [2020-10-15 00:04:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-15 00:04:15,694 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 130 [2020-10-15 00:04:15,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:15,695 INFO L225 Difference]: With dead ends: 147 [2020-10-15 00:04:15,695 INFO L226 Difference]: Without dead ends: 135 [2020-10-15 00:04:15,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2020-10-15 00:04:15,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-15 00:04:15,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-10-15 00:04:15,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-15 00:04:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 138 transitions. [2020-10-15 00:04:15,700 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 138 transitions. Word has length 130 [2020-10-15 00:04:15,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:15,700 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 138 transitions. [2020-10-15 00:04:15,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-15 00:04:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 138 transitions. [2020-10-15 00:04:15,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-15 00:04:15,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:15,701 INFO L422 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:15,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-15 00:04:15,702 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:15,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:15,702 INFO L82 PathProgramCache]: Analyzing trace with hash 246190614, now seen corresponding path program 59 times [2020-10-15 00:04:15,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:15,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195121558] [2020-10-15 00:04:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:15,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:15,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:16,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:16,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-15 00:04:16,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:16,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 892 [2020-10-15 00:04:16,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:16,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:16,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 61 [2020-10-15 00:04:16,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:16,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-15 00:04:16,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:18,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:18,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:18,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:18,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:18,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:18,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:18,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:18,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:18,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 60 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:18,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195121558] [2020-10-15 00:04:18,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:18,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-15 00:04:18,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718354979] [2020-10-15 00:04:18,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-15 00:04:18,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:18,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-15 00:04:18,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2020-10-15 00:04:18,542 INFO L87 Difference]: Start difference. First operand 135 states and 138 transitions. Second operand 62 states. [2020-10-15 00:04:18,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:18,817 INFO L93 Difference]: Finished difference Result 149 states and 156 transitions. [2020-10-15 00:04:18,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-15 00:04:18,817 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 132 [2020-10-15 00:04:18,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:18,819 INFO L225 Difference]: With dead ends: 149 [2020-10-15 00:04:18,819 INFO L226 Difference]: Without dead ends: 137 [2020-10-15 00:04:18,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2020-10-15 00:04:18,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-15 00:04:18,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-10-15 00:04:18,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-15 00:04:18,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2020-10-15 00:04:18,824 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 132 [2020-10-15 00:04:18,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:18,825 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2020-10-15 00:04:18,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-15 00:04:18,825 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2020-10-15 00:04:18,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-15 00:04:18,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:18,826 INFO L422 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:18,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-15 00:04:18,826 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:18,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:18,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1669330029, now seen corresponding path program 60 times [2020-10-15 00:04:18,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:18,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14618477] [2020-10-15 00:04:18,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:18,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:19,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:19,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-15 00:04:19,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:19,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-10-15 00:04:19,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:19,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-10-15 00:04:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-15 00:04:19,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:21,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:21,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:21,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:21,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:21,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:21,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:21,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:21,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:21,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 61 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:21,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14618477] [2020-10-15 00:04:21,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:21,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-10-15 00:04:21,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360019079] [2020-10-15 00:04:21,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-15 00:04:21,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:21,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-15 00:04:21,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2020-10-15 00:04:21,805 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand 63 states. [2020-10-15 00:04:22,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:22,042 INFO L93 Difference]: Finished difference Result 151 states and 158 transitions. [2020-10-15 00:04:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-15 00:04:22,043 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 134 [2020-10-15 00:04:22,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:22,044 INFO L225 Difference]: With dead ends: 151 [2020-10-15 00:04:22,044 INFO L226 Difference]: Without dead ends: 139 [2020-10-15 00:04:22,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2020-10-15 00:04:22,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-15 00:04:22,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2020-10-15 00:04:22,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-15 00:04:22,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 142 transitions. [2020-10-15 00:04:22,050 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 142 transitions. Word has length 134 [2020-10-15 00:04:22,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:22,050 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 142 transitions. [2020-10-15 00:04:22,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-15 00:04:22,050 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 142 transitions. [2020-10-15 00:04:22,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-15 00:04:22,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:22,051 INFO L422 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:22,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-15 00:04:22,052 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:22,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:22,052 INFO L82 PathProgramCache]: Analyzing trace with hash 56302032, now seen corresponding path program 61 times [2020-10-15 00:04:22,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:22,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148767266] [2020-10-15 00:04:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:22,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:22,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:23,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:23,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-15 00:04:23,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:23,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 968 [2020-10-15 00:04:23,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:23,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:23,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 63 [2020-10-15 00:04:23,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:23,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-15 00:04:23,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:25,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:25,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:25,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:25,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:25,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:25,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:25,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:25,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:25,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:25,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:25,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:25,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 62 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:25,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148767266] [2020-10-15 00:04:25,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:25,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-15 00:04:25,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765335777] [2020-10-15 00:04:25,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-15 00:04:25,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:25,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-15 00:04:25,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2020-10-15 00:04:25,106 INFO L87 Difference]: Start difference. First operand 139 states and 142 transitions. Second operand 64 states. [2020-10-15 00:04:25,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:25,318 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2020-10-15 00:04:25,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-15 00:04:25,318 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 136 [2020-10-15 00:04:25,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:25,319 INFO L225 Difference]: With dead ends: 153 [2020-10-15 00:04:25,319 INFO L226 Difference]: Without dead ends: 141 [2020-10-15 00:04:25,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2020-10-15 00:04:25,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-15 00:04:25,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-10-15 00:04:25,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-15 00:04:25,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 144 transitions. [2020-10-15 00:04:25,324 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 144 transitions. Word has length 136 [2020-10-15 00:04:25,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:25,324 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 144 transitions. [2020-10-15 00:04:25,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-15 00:04:25,324 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 144 transitions. [2020-10-15 00:04:25,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-15 00:04:25,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:25,325 INFO L422 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:25,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-15 00:04:25,325 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:25,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:25,326 INFO L82 PathProgramCache]: Analyzing trace with hash 531336397, now seen corresponding path program 62 times [2020-10-15 00:04:25,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:25,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686511061] [2020-10-15 00:04:25,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:25,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:25,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:26,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:26,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-15 00:04:26,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:26,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 969 [2020-10-15 00:04:26,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:26,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 64 [2020-10-15 00:04:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-15 00:04:26,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:28,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:28,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:28,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:28,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:28,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:28,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:04:28,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:28,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:28,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 63 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:28,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686511061] [2020-10-15 00:04:28,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:28,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-10-15 00:04:28,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135078906] [2020-10-15 00:04:28,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-10-15 00:04:28,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:28,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-10-15 00:04:28,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2020-10-15 00:04:28,526 INFO L87 Difference]: Start difference. First operand 141 states and 144 transitions. Second operand 65 states. [2020-10-15 00:04:28,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:28,740 INFO L93 Difference]: Finished difference Result 155 states and 162 transitions. [2020-10-15 00:04:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 00:04:28,741 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 138 [2020-10-15 00:04:28,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:28,742 INFO L225 Difference]: With dead ends: 155 [2020-10-15 00:04:28,742 INFO L226 Difference]: Without dead ends: 143 [2020-10-15 00:04:28,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2020-10-15 00:04:28,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-15 00:04:28,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-10-15 00:04:28,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-15 00:04:28,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 146 transitions. [2020-10-15 00:04:28,747 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 146 transitions. Word has length 138 [2020-10-15 00:04:28,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:28,747 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 146 transitions. [2020-10-15 00:04:28,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-10-15 00:04:28,748 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 146 transitions. [2020-10-15 00:04:28,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-15 00:04:28,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:28,749 INFO L422 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:28,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-15 00:04:28,749 INFO L427 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:28,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:28,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1772827786, now seen corresponding path program 63 times [2020-10-15 00:04:28,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:28,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418192203] [2020-10-15 00:04:28,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:28,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:28,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:29,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:29,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-15 00:04:29,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:29,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-10-15 00:04:29,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:29,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:29,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 65 [2020-10-15 00:04:29,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:29,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-15 00:04:29,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:31,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:31,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:31,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:31,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:31,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:31,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:31,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:31,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:31,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:32,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 64 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:32,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418192203] [2020-10-15 00:04:32,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:32,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-10-15 00:04:32,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614530353] [2020-10-15 00:04:32,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-15 00:04:32,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:32,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-15 00:04:32,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2020-10-15 00:04:32,004 INFO L87 Difference]: Start difference. First operand 143 states and 146 transitions. Second operand 66 states. [2020-10-15 00:04:32,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:32,226 INFO L93 Difference]: Finished difference Result 157 states and 164 transitions. [2020-10-15 00:04:32,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-10-15 00:04:32,228 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 140 [2020-10-15 00:04:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:32,230 INFO L225 Difference]: With dead ends: 157 [2020-10-15 00:04:32,230 INFO L226 Difference]: Without dead ends: 145 [2020-10-15 00:04:32,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2020-10-15 00:04:32,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-15 00:04:32,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-10-15 00:04:32,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-15 00:04:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 148 transitions. [2020-10-15 00:04:32,235 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 148 transitions. Word has length 140 [2020-10-15 00:04:32,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:32,235 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 148 transitions. [2020-10-15 00:04:32,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-15 00:04:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 148 transitions. [2020-10-15 00:04:32,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-15 00:04:32,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:32,237 INFO L422 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:32,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-15 00:04:32,237 INFO L427 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:32,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:32,237 INFO L82 PathProgramCache]: Analyzing trace with hash 845144327, now seen corresponding path program 64 times [2020-10-15 00:04:32,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:32,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412679117] [2020-10-15 00:04:32,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:32,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:32,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:33,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:33,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-15 00:04:33,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:33,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1073 [2020-10-15 00:04:33,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:33,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:33,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 66 [2020-10-15 00:04:33,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:33,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-15 00:04:33,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:35,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:35,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:35,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:35,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:35,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:35,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:35,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:35,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:35,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:35,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:35,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:35,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 65 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:35,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412679117] [2020-10-15 00:04:35,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:35,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-10-15 00:04:35,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692584876] [2020-10-15 00:04:35,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-10-15 00:04:35,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:35,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-10-15 00:04:35,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2020-10-15 00:04:35,615 INFO L87 Difference]: Start difference. First operand 145 states and 148 transitions. Second operand 67 states. [2020-10-15 00:04:35,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:35,834 INFO L93 Difference]: Finished difference Result 159 states and 166 transitions. [2020-10-15 00:04:35,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-15 00:04:35,835 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 142 [2020-10-15 00:04:35,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:35,836 INFO L225 Difference]: With dead ends: 159 [2020-10-15 00:04:35,836 INFO L226 Difference]: Without dead ends: 147 [2020-10-15 00:04:35,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2020-10-15 00:04:35,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-15 00:04:35,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-10-15 00:04:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-15 00:04:35,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 150 transitions. [2020-10-15 00:04:35,840 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 150 transitions. Word has length 142 [2020-10-15 00:04:35,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:35,841 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 150 transitions. [2020-10-15 00:04:35,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-10-15 00:04:35,841 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 150 transitions. [2020-10-15 00:04:35,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-15 00:04:35,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:35,841 INFO L422 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:35,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-15 00:04:35,842 INFO L427 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:35,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:35,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1600429500, now seen corresponding path program 65 times [2020-10-15 00:04:35,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:35,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065100556] [2020-10-15 00:04:35,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:35,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:35,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:36,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:36,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-15 00:04:36,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:36,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1080 [2020-10-15 00:04:36,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:36,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:36,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 67 [2020-10-15 00:04:36,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-15 00:04:36,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:39,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:39,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:39,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:39,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:39,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:39,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:39,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:39,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:39,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 66 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:39,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065100556] [2020-10-15 00:04:39,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:39,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-10-15 00:04:39,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96660787] [2020-10-15 00:04:39,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-10-15 00:04:39,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:39,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-10-15 00:04:39,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2020-10-15 00:04:39,295 INFO L87 Difference]: Start difference. First operand 147 states and 150 transitions. Second operand 68 states. [2020-10-15 00:04:39,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:39,555 INFO L93 Difference]: Finished difference Result 161 states and 168 transitions. [2020-10-15 00:04:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-15 00:04:39,556 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 144 [2020-10-15 00:04:39,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:39,557 INFO L225 Difference]: With dead ends: 161 [2020-10-15 00:04:39,557 INFO L226 Difference]: Without dead ends: 149 [2020-10-15 00:04:39,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2020-10-15 00:04:39,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-15 00:04:39,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-10-15 00:04:39,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-15 00:04:39,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 152 transitions. [2020-10-15 00:04:39,562 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 152 transitions. Word has length 144 [2020-10-15 00:04:39,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:39,562 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 152 transitions. [2020-10-15 00:04:39,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-10-15 00:04:39,562 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 152 transitions. [2020-10-15 00:04:39,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-15 00:04:39,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:39,563 INFO L422 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:39,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-15 00:04:39,563 INFO L427 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:39,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:39,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1845200961, now seen corresponding path program 66 times [2020-10-15 00:04:39,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:39,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244223718] [2020-10-15 00:04:39,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:39,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:39,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:40,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:40,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-15 00:04:40,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:40,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1115 [2020-10-15 00:04:40,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:40,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:40,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 68 [2020-10-15 00:04:40,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:40,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-15 00:04:40,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:43,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:43,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:43,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:43,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:43,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:43,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:43,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:43,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:43,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 67 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:43,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244223718] [2020-10-15 00:04:43,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:43,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-10-15 00:04:43,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706048119] [2020-10-15 00:04:43,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-10-15 00:04:43,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:43,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-10-15 00:04:43,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 00:04:43,131 INFO L87 Difference]: Start difference. First operand 149 states and 152 transitions. Second operand 69 states. [2020-10-15 00:04:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:43,442 INFO L93 Difference]: Finished difference Result 163 states and 170 transitions. [2020-10-15 00:04:43,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-15 00:04:43,443 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 146 [2020-10-15 00:04:43,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:43,444 INFO L225 Difference]: With dead ends: 163 [2020-10-15 00:04:43,444 INFO L226 Difference]: Without dead ends: 151 [2020-10-15 00:04:43,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 00:04:43,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-15 00:04:43,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-10-15 00:04:43,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-15 00:04:43,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 154 transitions. [2020-10-15 00:04:43,448 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 154 transitions. Word has length 146 [2020-10-15 00:04:43,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:43,449 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 154 transitions. [2020-10-15 00:04:43,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-10-15 00:04:43,449 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 154 transitions. [2020-10-15 00:04:43,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-15 00:04:43,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:43,449 INFO L422 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:43,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-15 00:04:43,450 INFO L427 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:43,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:43,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1676288766, now seen corresponding path program 67 times [2020-10-15 00:04:43,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:43,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591541690] [2020-10-15 00:04:43,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:43,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:43,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:44,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:44,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-15 00:04:44,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:44,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1155 [2020-10-15 00:04:44,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:44,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:44,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 69 [2020-10-15 00:04:44,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:44,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-15 00:04:44,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:47,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:47,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:47,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:47,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:47,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:47,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:47,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:47,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:47,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:47,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:47,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:47,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 68 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:47,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591541690] [2020-10-15 00:04:47,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:47,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-10-15 00:04:47,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289977792] [2020-10-15 00:04:47,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-10-15 00:04:47,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:47,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-10-15 00:04:47,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2020-10-15 00:04:47,095 INFO L87 Difference]: Start difference. First operand 151 states and 154 transitions. Second operand 70 states. [2020-10-15 00:04:47,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:47,470 INFO L93 Difference]: Finished difference Result 165 states and 172 transitions. [2020-10-15 00:04:47,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-15 00:04:47,471 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 148 [2020-10-15 00:04:47,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:47,472 INFO L225 Difference]: With dead ends: 165 [2020-10-15 00:04:47,472 INFO L226 Difference]: Without dead ends: 153 [2020-10-15 00:04:47,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2020-10-15 00:04:47,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-15 00:04:47,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-10-15 00:04:47,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-15 00:04:47,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 156 transitions. [2020-10-15 00:04:47,477 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 156 transitions. Word has length 148 [2020-10-15 00:04:47,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:47,477 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 156 transitions. [2020-10-15 00:04:47,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-10-15 00:04:47,477 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 156 transitions. [2020-10-15 00:04:47,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-15 00:04:47,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:47,478 INFO L422 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:47,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-15 00:04:47,478 INFO L427 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:47,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:47,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1734540677, now seen corresponding path program 68 times [2020-10-15 00:04:47,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:47,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233573683] [2020-10-15 00:04:47,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:47,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:47,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:48,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:48,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-15 00:04:48,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:48,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1189 [2020-10-15 00:04:48,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:48,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:48,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 70 [2020-10-15 00:04:48,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:48,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-15 00:04:48,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:51,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:51,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:51,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:51,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:51,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:51,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:51,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:51,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 69 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:51,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233573683] [2020-10-15 00:04:51,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:51,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-10-15 00:04:51,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853482722] [2020-10-15 00:04:51,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-10-15 00:04:51,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:51,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-10-15 00:04:51,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2020-10-15 00:04:51,263 INFO L87 Difference]: Start difference. First operand 153 states and 156 transitions. Second operand 71 states. [2020-10-15 00:04:51,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:51,635 INFO L93 Difference]: Finished difference Result 167 states and 174 transitions. [2020-10-15 00:04:51,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-15 00:04:51,635 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 150 [2020-10-15 00:04:51,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:51,636 INFO L225 Difference]: With dead ends: 167 [2020-10-15 00:04:51,636 INFO L226 Difference]: Without dead ends: 155 [2020-10-15 00:04:51,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2020-10-15 00:04:51,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-15 00:04:51,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-10-15 00:04:51,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-15 00:04:51,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 158 transitions. [2020-10-15 00:04:51,641 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 158 transitions. Word has length 150 [2020-10-15 00:04:51,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:51,641 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 158 transitions. [2020-10-15 00:04:51,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-10-15 00:04:51,641 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 158 transitions. [2020-10-15 00:04:51,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-15 00:04:51,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:51,642 INFO L422 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:51,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-15 00:04:51,643 INFO L427 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:51,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:51,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1813378744, now seen corresponding path program 69 times [2020-10-15 00:04:51,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:51,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262883326] [2020-10-15 00:04:51,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:51,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:51,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:53,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:53,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-15 00:04:53,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:53,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1378 [2020-10-15 00:04:53,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:53,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 71 [2020-10-15 00:04:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-15 00:04:53,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:55,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:55,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:55,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:55,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:55,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:55,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:04:55,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:55,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:55,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:55,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:55,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:55,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 70 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:55,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262883326] [2020-10-15 00:04:55,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:55,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2020-10-15 00:04:55,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309837528] [2020-10-15 00:04:55,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-10-15 00:04:55,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:55,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-10-15 00:04:55,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2020-10-15 00:04:55,784 INFO L87 Difference]: Start difference. First operand 155 states and 158 transitions. Second operand 72 states. [2020-10-15 00:04:56,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:56,054 INFO L93 Difference]: Finished difference Result 169 states and 176 transitions. [2020-10-15 00:04:56,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-15 00:04:56,055 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 152 [2020-10-15 00:04:56,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:56,056 INFO L225 Difference]: With dead ends: 169 [2020-10-15 00:04:56,056 INFO L226 Difference]: Without dead ends: 157 [2020-10-15 00:04:56,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2020-10-15 00:04:56,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-15 00:04:56,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-10-15 00:04:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-15 00:04:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 160 transitions. [2020-10-15 00:04:56,060 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 160 transitions. Word has length 152 [2020-10-15 00:04:56,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:56,060 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 160 transitions. [2020-10-15 00:04:56,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-10-15 00:04:56,061 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 160 transitions. [2020-10-15 00:04:56,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-15 00:04:56,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:56,061 INFO L422 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:56,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-15 00:04:56,062 INFO L427 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:56,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:56,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1159909301, now seen corresponding path program 70 times [2020-10-15 00:04:56,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:56,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745101567] [2020-10-15 00:04:56,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:56,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:56,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:57,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:57,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-15 00:04:57,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:04:57,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1676 [2020-10-15 00:04:57,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:57,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:57,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 72 [2020-10-15 00:04:57,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:57,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-15 00:04:57,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:00,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:00,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:00,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:00,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:00,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:00,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:00,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:00,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:00,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 71 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:00,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745101567] [2020-10-15 00:05:00,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:00,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2020-10-15 00:05:00,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365032831] [2020-10-15 00:05:00,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-10-15 00:05:00,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:00,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-10-15 00:05:00,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2020-10-15 00:05:00,538 INFO L87 Difference]: Start difference. First operand 157 states and 160 transitions. Second operand 73 states. [2020-10-15 00:05:00,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:00,934 INFO L93 Difference]: Finished difference Result 171 states and 178 transitions. [2020-10-15 00:05:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-10-15 00:05:00,935 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 154 [2020-10-15 00:05:00,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:00,936 INFO L225 Difference]: With dead ends: 171 [2020-10-15 00:05:00,936 INFO L226 Difference]: Without dead ends: 159 [2020-10-15 00:05:00,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2020-10-15 00:05:00,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-15 00:05:00,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-10-15 00:05:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-15 00:05:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 162 transitions. [2020-10-15 00:05:00,942 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 162 transitions. Word has length 154 [2020-10-15 00:05:00,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:00,942 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 162 transitions. [2020-10-15 00:05:00,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-10-15 00:05:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 162 transitions. [2020-10-15 00:05:00,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-15 00:05:00,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:00,944 INFO L422 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:00,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-15 00:05:00,944 INFO L427 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:00,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:00,944 INFO L82 PathProgramCache]: Analyzing trace with hash 240999794, now seen corresponding path program 71 times [2020-10-15 00:05:00,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:00,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765673733] [2020-10-15 00:05:00,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:00,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:01,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:02,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:02,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-15 00:05:02,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:02,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1352 [2020-10-15 00:05:02,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:02,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:02,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 73 [2020-10-15 00:05:02,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:02,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-15 00:05:02,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:05,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:05,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:05,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:05,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:05,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:05,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:05,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:05,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:05,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:05,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:05,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:05,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 72 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:05,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765673733] [2020-10-15 00:05:05,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:05,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-10-15 00:05:05,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067692898] [2020-10-15 00:05:05,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-10-15 00:05:05,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:05,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-10-15 00:05:05,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2020-10-15 00:05:05,199 INFO L87 Difference]: Start difference. First operand 159 states and 162 transitions. Second operand 74 states. [2020-10-15 00:05:05,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:05,601 INFO L93 Difference]: Finished difference Result 173 states and 180 transitions. [2020-10-15 00:05:05,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-15 00:05:05,602 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 156 [2020-10-15 00:05:05,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:05,603 INFO L225 Difference]: With dead ends: 173 [2020-10-15 00:05:05,604 INFO L226 Difference]: Without dead ends: 161 [2020-10-15 00:05:05,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2020-10-15 00:05:05,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-15 00:05:05,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-10-15 00:05:05,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-15 00:05:05,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 164 transitions. [2020-10-15 00:05:05,608 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 164 transitions. Word has length 156 [2020-10-15 00:05:05,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:05,608 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 164 transitions. [2020-10-15 00:05:05,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-10-15 00:05:05,608 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 164 transitions. [2020-10-15 00:05:05,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-15 00:05:05,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:05,609 INFO L422 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:05,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-15 00:05:05,609 INFO L427 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:05,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:05,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1932226543, now seen corresponding path program 72 times [2020-10-15 00:05:05,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:05,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780080578] [2020-10-15 00:05:05,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:05,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:05,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:07,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:07,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-15 00:05:07,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:07,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1439 [2020-10-15 00:05:07,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:07,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:07,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 74 [2020-10-15 00:05:07,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:07,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-15 00:05:07,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:10,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:10,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:10,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:10,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:10,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:10,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:10,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:10,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:10,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:10,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:10,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:10,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 73 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:10,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780080578] [2020-10-15 00:05:10,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:10,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-10-15 00:05:10,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085504406] [2020-10-15 00:05:10,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-10-15 00:05:10,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:10,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-10-15 00:05:10,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2020-10-15 00:05:10,045 INFO L87 Difference]: Start difference. First operand 161 states and 164 transitions. Second operand 75 states. [2020-10-15 00:05:10,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:10,434 INFO L93 Difference]: Finished difference Result 175 states and 182 transitions. [2020-10-15 00:05:10,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-10-15 00:05:10,435 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 158 [2020-10-15 00:05:10,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:10,436 INFO L225 Difference]: With dead ends: 175 [2020-10-15 00:05:10,436 INFO L226 Difference]: Without dead ends: 163 [2020-10-15 00:05:10,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2020-10-15 00:05:10,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-15 00:05:10,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-10-15 00:05:10,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-15 00:05:10,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 166 transitions. [2020-10-15 00:05:10,441 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 166 transitions. Word has length 158 [2020-10-15 00:05:10,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:10,442 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 166 transitions. [2020-10-15 00:05:10,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-10-15 00:05:10,442 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 166 transitions. [2020-10-15 00:05:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-15 00:05:10,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:10,443 INFO L422 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:10,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-15 00:05:10,443 INFO L427 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:10,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:10,444 INFO L82 PathProgramCache]: Analyzing trace with hash -591472852, now seen corresponding path program 73 times [2020-10-15 00:05:10,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:10,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103106652] [2020-10-15 00:05:10,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:10,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:10,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:11,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:11,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-15 00:05:11,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1399 [2020-10-15 00:05:11,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:11,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 75 [2020-10-15 00:05:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-15 00:05:11,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:14,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:14,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:14,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:14,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:14,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:14,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:14,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:14,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:14,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 74 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:14,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103106652] [2020-10-15 00:05:14,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:14,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-10-15 00:05:14,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193068656] [2020-10-15 00:05:14,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-10-15 00:05:14,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:14,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-10-15 00:05:14,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2020-10-15 00:05:14,917 INFO L87 Difference]: Start difference. First operand 163 states and 166 transitions. Second operand 76 states. [2020-10-15 00:05:15,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:15,191 INFO L93 Difference]: Finished difference Result 177 states and 184 transitions. [2020-10-15 00:05:15,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-15 00:05:15,192 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 160 [2020-10-15 00:05:15,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:15,193 INFO L225 Difference]: With dead ends: 177 [2020-10-15 00:05:15,193 INFO L226 Difference]: Without dead ends: 165 [2020-10-15 00:05:15,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2020-10-15 00:05:15,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-15 00:05:15,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-10-15 00:05:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-15 00:05:15,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 168 transitions. [2020-10-15 00:05:15,199 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 168 transitions. Word has length 160 [2020-10-15 00:05:15,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:15,199 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 168 transitions. [2020-10-15 00:05:15,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-10-15 00:05:15,199 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 168 transitions. [2020-10-15 00:05:15,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-15 00:05:15,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:15,200 INFO L422 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:15,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-15 00:05:15,201 INFO L427 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:15,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:15,201 INFO L82 PathProgramCache]: Analyzing trace with hash 789930793, now seen corresponding path program 74 times [2020-10-15 00:05:15,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:15,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899157334] [2020-10-15 00:05:15,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:15,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:15,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:16,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:16,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-15 00:05:16,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:16,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1436 [2020-10-15 00:05:16,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:16,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:16,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 76 [2020-10-15 00:05:16,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:16,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-15 00:05:16,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:19,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:19,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:19,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:19,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:19,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:19,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:19,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:19,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:19,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:19,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:19,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:19,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 75 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:19,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899157334] [2020-10-15 00:05:19,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:19,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2020-10-15 00:05:19,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601912725] [2020-10-15 00:05:19,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-10-15 00:05:19,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:19,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-10-15 00:05:19,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2020-10-15 00:05:19,867 INFO L87 Difference]: Start difference. First operand 165 states and 168 transitions. Second operand 77 states. [2020-10-15 00:05:20,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:20,300 INFO L93 Difference]: Finished difference Result 179 states and 186 transitions. [2020-10-15 00:05:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-10-15 00:05:20,301 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 162 [2020-10-15 00:05:20,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:20,302 INFO L225 Difference]: With dead ends: 179 [2020-10-15 00:05:20,302 INFO L226 Difference]: Without dead ends: 167 [2020-10-15 00:05:20,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2020-10-15 00:05:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-15 00:05:20,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2020-10-15 00:05:20,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-15 00:05:20,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 170 transitions. [2020-10-15 00:05:20,307 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 170 transitions. Word has length 162 [2020-10-15 00:05:20,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:20,307 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 170 transitions. [2020-10-15 00:05:20,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-10-15 00:05:20,307 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 170 transitions. [2020-10-15 00:05:20,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-15 00:05:20,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:20,308 INFO L422 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:20,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-15 00:05:20,309 INFO L427 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:20,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:20,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1173939174, now seen corresponding path program 75 times [2020-10-15 00:05:20,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:20,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817687243] [2020-10-15 00:05:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:20,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:20,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:21,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:21,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-15 00:05:21,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:21,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1495 [2020-10-15 00:05:21,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:21,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:21,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 77 [2020-10-15 00:05:21,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:21,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-15 00:05:21,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:25,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:25,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:25,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:25,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:25,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:25,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:25,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:25,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:25,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:25,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:25,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:25,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:25,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 76 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:25,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817687243] [2020-10-15 00:05:25,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:25,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2020-10-15 00:05:25,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719835494] [2020-10-15 00:05:25,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-10-15 00:05:25,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:25,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-10-15 00:05:25,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 00:05:25,096 INFO L87 Difference]: Start difference. First operand 167 states and 170 transitions. Second operand 78 states. [2020-10-15 00:05:25,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:25,433 INFO L93 Difference]: Finished difference Result 181 states and 188 transitions. [2020-10-15 00:05:25,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-10-15 00:05:25,434 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 164 [2020-10-15 00:05:25,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:25,435 INFO L225 Difference]: With dead ends: 181 [2020-10-15 00:05:25,435 INFO L226 Difference]: Without dead ends: 169 [2020-10-15 00:05:25,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 00:05:25,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-15 00:05:25,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2020-10-15 00:05:25,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-15 00:05:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 172 transitions. [2020-10-15 00:05:25,441 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 172 transitions. Word has length 164 [2020-10-15 00:05:25,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:25,441 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 172 transitions. [2020-10-15 00:05:25,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-10-15 00:05:25,441 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 172 transitions. [2020-10-15 00:05:25,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-15 00:05:25,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:25,442 INFO L422 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:25,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-15 00:05:25,442 INFO L427 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:25,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:25,443 INFO L82 PathProgramCache]: Analyzing trace with hash 838805859, now seen corresponding path program 76 times [2020-10-15 00:05:25,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:25,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965320799] [2020-10-15 00:05:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:25,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:25,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:26,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:26,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-15 00:05:26,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:26,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1500 [2020-10-15 00:05:26,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:26,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:26,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 78 [2020-10-15 00:05:26,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:26,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-15 00:05:26,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:30,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:30,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:30,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:30,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:30,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:30,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:30,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:30,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:30,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:30,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:30,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:30,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:30,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 77 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:30,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965320799] [2020-10-15 00:05:30,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:30,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2020-10-15 00:05:30,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072199016] [2020-10-15 00:05:30,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-10-15 00:05:30,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:30,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-10-15 00:05:30,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2020-10-15 00:05:30,338 INFO L87 Difference]: Start difference. First operand 169 states and 172 transitions. Second operand 79 states. [2020-10-15 00:05:30,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:30,788 INFO L93 Difference]: Finished difference Result 183 states and 190 transitions. [2020-10-15 00:05:30,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-15 00:05:30,789 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 166 [2020-10-15 00:05:30,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:30,790 INFO L225 Difference]: With dead ends: 183 [2020-10-15 00:05:30,790 INFO L226 Difference]: Without dead ends: 171 [2020-10-15 00:05:30,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2020-10-15 00:05:30,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-15 00:05:30,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-15 00:05:30,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-15 00:05:30,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 174 transitions. [2020-10-15 00:05:30,796 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 174 transitions. Word has length 166 [2020-10-15 00:05:30,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:30,796 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 174 transitions. [2020-10-15 00:05:30,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-10-15 00:05:30,796 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 174 transitions. [2020-10-15 00:05:30,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-15 00:05:30,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:30,797 INFO L422 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:30,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-15 00:05:30,797 INFO L427 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:30,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:30,798 INFO L82 PathProgramCache]: Analyzing trace with hash 898237344, now seen corresponding path program 77 times [2020-10-15 00:05:30,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:30,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935426852] [2020-10-15 00:05:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:30,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:30,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:32,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:32,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-15 00:05:32,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:32,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1580 [2020-10-15 00:05:32,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:32,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 79 [2020-10-15 00:05:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-15 00:05:32,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:35,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:35,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:35,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:35,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:35,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:35,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:35,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:35,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:35,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 78 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:35,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935426852] [2020-10-15 00:05:35,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:35,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2020-10-15 00:05:35,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960528152] [2020-10-15 00:05:35,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-10-15 00:05:35,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:35,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-10-15 00:05:35,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2020-10-15 00:05:35,886 INFO L87 Difference]: Start difference. First operand 171 states and 174 transitions. Second operand 80 states. [2020-10-15 00:05:36,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:36,345 INFO L93 Difference]: Finished difference Result 185 states and 192 transitions. [2020-10-15 00:05:36,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-10-15 00:05:36,346 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 168 [2020-10-15 00:05:36,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:36,347 INFO L225 Difference]: With dead ends: 185 [2020-10-15 00:05:36,347 INFO L226 Difference]: Without dead ends: 173 [2020-10-15 00:05:36,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2020-10-15 00:05:36,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-15 00:05:36,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2020-10-15 00:05:36,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-15 00:05:36,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 176 transitions. [2020-10-15 00:05:36,352 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 176 transitions. Word has length 168 [2020-10-15 00:05:36,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:36,353 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 176 transitions. [2020-10-15 00:05:36,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-10-15 00:05:36,353 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 176 transitions. [2020-10-15 00:05:36,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-15 00:05:36,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:36,354 INFO L422 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:36,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2020-10-15 00:05:36,354 INFO L427 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:36,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:36,355 INFO L82 PathProgramCache]: Analyzing trace with hash -2117647715, now seen corresponding path program 78 times [2020-10-15 00:05:36,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:36,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973239832] [2020-10-15 00:05:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:36,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:36,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:38,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:38,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-15 00:05:38,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:38,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1688 [2020-10-15 00:05:38,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:38,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:38,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 80 [2020-10-15 00:05:38,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:38,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-15 00:05:38,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:41,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:41,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:41,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:41,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:41,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:41,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:41,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:41,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:41,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:41,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:41,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:41,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:41,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 79 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:41,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973239832] [2020-10-15 00:05:41,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:41,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2020-10-15 00:05:41,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102800125] [2020-10-15 00:05:41,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-10-15 00:05:41,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:41,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-10-15 00:05:41,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2020-10-15 00:05:41,648 INFO L87 Difference]: Start difference. First operand 173 states and 176 transitions. Second operand 81 states. [2020-10-15 00:05:42,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:42,089 INFO L93 Difference]: Finished difference Result 187 states and 194 transitions. [2020-10-15 00:05:42,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-10-15 00:05:42,090 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 170 [2020-10-15 00:05:42,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:42,091 INFO L225 Difference]: With dead ends: 187 [2020-10-15 00:05:42,091 INFO L226 Difference]: Without dead ends: 175 [2020-10-15 00:05:42,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2020-10-15 00:05:42,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-15 00:05:42,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-10-15 00:05:42,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-15 00:05:42,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 178 transitions. [2020-10-15 00:05:42,098 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 178 transitions. Word has length 170 [2020-10-15 00:05:42,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:42,098 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 178 transitions. [2020-10-15 00:05:42,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-10-15 00:05:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 178 transitions. [2020-10-15 00:05:42,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-15 00:05:42,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:42,100 INFO L422 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:42,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-15 00:05:42,100 INFO L427 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:42,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1280264614, now seen corresponding path program 79 times [2020-10-15 00:05:42,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:42,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642193787] [2020-10-15 00:05:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:42,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:42,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:43,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:43,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-15 00:05:43,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:43,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1706 [2020-10-15 00:05:43,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:43,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:43,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 81 [2020-10-15 00:05:43,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:43,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-15 00:05:43,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:47,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:47,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:47,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:47,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:47,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:47,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:47,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:47,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:47,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:47,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:47,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:47,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:47,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 80 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:47,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642193787] [2020-10-15 00:05:47,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:47,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2020-10-15 00:05:47,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15885206] [2020-10-15 00:05:47,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-10-15 00:05:47,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:47,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-10-15 00:05:47,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2020-10-15 00:05:47,514 INFO L87 Difference]: Start difference. First operand 175 states and 178 transitions. Second operand 82 states. [2020-10-15 00:05:47,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:47,932 INFO L93 Difference]: Finished difference Result 189 states and 196 transitions. [2020-10-15 00:05:47,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-10-15 00:05:47,933 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 172 [2020-10-15 00:05:47,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:47,934 INFO L225 Difference]: With dead ends: 189 [2020-10-15 00:05:47,935 INFO L226 Difference]: Without dead ends: 177 [2020-10-15 00:05:47,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2020-10-15 00:05:47,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-15 00:05:47,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-10-15 00:05:47,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-15 00:05:47,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 180 transitions. [2020-10-15 00:05:47,939 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 180 transitions. Word has length 172 [2020-10-15 00:05:47,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:47,939 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 180 transitions. [2020-10-15 00:05:47,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-10-15 00:05:47,939 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 180 transitions. [2020-10-15 00:05:47,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-15 00:05:47,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:47,940 INFO L422 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:47,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-15 00:05:47,940 INFO L427 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:47,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:47,940 INFO L82 PathProgramCache]: Analyzing trace with hash 286011095, now seen corresponding path program 80 times [2020-10-15 00:05:47,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:47,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339823494] [2020-10-15 00:05:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:47,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:48,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:49,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:49,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-15 00:05:49,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:49,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1781 [2020-10-15 00:05:49,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:49,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 82 [2020-10-15 00:05:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-15 00:05:49,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:53,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:53,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:53,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:53,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:53,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:53,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:53,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:53,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:53,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:53,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:53,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:53,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 81 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:53,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339823494] [2020-10-15 00:05:53,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:53,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2020-10-15 00:05:53,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765565139] [2020-10-15 00:05:53,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-10-15 00:05:53,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:53,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-10-15 00:05:53,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2020-10-15 00:05:53,543 INFO L87 Difference]: Start difference. First operand 177 states and 180 transitions. Second operand 83 states. [2020-10-15 00:05:53,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:53,943 INFO L93 Difference]: Finished difference Result 191 states and 198 transitions. [2020-10-15 00:05:53,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-10-15 00:05:53,943 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 174 [2020-10-15 00:05:53,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:53,945 INFO L225 Difference]: With dead ends: 191 [2020-10-15 00:05:53,945 INFO L226 Difference]: Without dead ends: 179 [2020-10-15 00:05:53,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2020-10-15 00:05:53,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-15 00:05:53,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-10-15 00:05:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-15 00:05:53,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 182 transitions. [2020-10-15 00:05:53,950 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 182 transitions. Word has length 174 [2020-10-15 00:05:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:53,951 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 182 transitions. [2020-10-15 00:05:53,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-10-15 00:05:53,951 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 182 transitions. [2020-10-15 00:05:53,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-15 00:05:53,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:53,952 INFO L422 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:53,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2020-10-15 00:05:53,952 INFO L427 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:53,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:53,953 INFO L82 PathProgramCache]: Analyzing trace with hash -2056553452, now seen corresponding path program 81 times [2020-10-15 00:05:53,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:53,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222562413] [2020-10-15 00:05:53,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:53,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:54,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:55,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:55,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-15 00:05:55,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:05:55,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1746 [2020-10-15 00:05:55,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:55,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 83 [2020-10-15 00:05:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-15 00:05:55,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:59,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:59,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:59,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:59,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:59,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:59,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:59,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:59,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:59,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 82 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:05:59,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222562413] [2020-10-15 00:05:59,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:59,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2020-10-15 00:05:59,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705551025] [2020-10-15 00:05:59,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-10-15 00:05:59,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:59,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-10-15 00:05:59,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2020-10-15 00:05:59,626 INFO L87 Difference]: Start difference. First operand 179 states and 182 transitions. Second operand 84 states. [2020-10-15 00:06:00,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:00,034 INFO L93 Difference]: Finished difference Result 193 states and 200 transitions. [2020-10-15 00:06:00,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-10-15 00:06:00,035 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 176 [2020-10-15 00:06:00,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:00,037 INFO L225 Difference]: With dead ends: 193 [2020-10-15 00:06:00,037 INFO L226 Difference]: Without dead ends: 181 [2020-10-15 00:06:00,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2020-10-15 00:06:00,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-15 00:06:00,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2020-10-15 00:06:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-15 00:06:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 184 transitions. [2020-10-15 00:06:00,043 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 184 transitions. Word has length 176 [2020-10-15 00:06:00,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:00,043 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 184 transitions. [2020-10-15 00:06:00,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-10-15 00:06:00,043 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 184 transitions. [2020-10-15 00:06:00,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-15 00:06:00,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:00,044 INFO L422 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:00,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-10-15 00:06:00,044 INFO L427 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:00,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:00,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1596747281, now seen corresponding path program 82 times [2020-10-15 00:06:00,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:00,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031090629] [2020-10-15 00:06:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:00,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:00,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:01,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:01,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-15 00:06:01,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:01,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1869 [2020-10-15 00:06:01,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:01,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 84 [2020-10-15 00:06:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-15 00:06:01,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:05,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:05,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:05,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:05,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:05,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:05,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:05,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:05,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:05,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:05,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 83 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:05,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031090629] [2020-10-15 00:06:05,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:05,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2020-10-15 00:06:05,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104554490] [2020-10-15 00:06:05,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-10-15 00:06:05,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:05,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-10-15 00:06:05,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2020-10-15 00:06:05,969 INFO L87 Difference]: Start difference. First operand 181 states and 184 transitions. Second operand 85 states. [2020-10-15 00:06:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:06,407 INFO L93 Difference]: Finished difference Result 195 states and 202 transitions. [2020-10-15 00:06:06,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-10-15 00:06:06,408 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 178 [2020-10-15 00:06:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:06,409 INFO L225 Difference]: With dead ends: 195 [2020-10-15 00:06:06,409 INFO L226 Difference]: Without dead ends: 183 [2020-10-15 00:06:06,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2020-10-15 00:06:06,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-15 00:06:06,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2020-10-15 00:06:06,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-15 00:06:06,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 186 transitions. [2020-10-15 00:06:06,414 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 186 transitions. Word has length 178 [2020-10-15 00:06:06,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:06,415 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 186 transitions. [2020-10-15 00:06:06,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-10-15 00:06:06,415 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 186 transitions. [2020-10-15 00:06:06,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-15 00:06:06,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:06,416 INFO L422 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:06,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-15 00:06:06,417 INFO L427 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:06,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:06,417 INFO L82 PathProgramCache]: Analyzing trace with hash -864496434, now seen corresponding path program 83 times [2020-10-15 00:06:06,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:06,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868858947] [2020-10-15 00:06:06,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:06,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:06,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:08,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:08,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-15 00:06:08,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:08,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1883 [2020-10-15 00:06:08,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:08,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:08,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 85 [2020-10-15 00:06:08,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:08,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-15 00:06:08,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:12,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:12,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:12,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:12,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:12,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:12,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:12,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:12,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:12,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 84 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:12,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868858947] [2020-10-15 00:06:12,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:12,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2020-10-15 00:06:12,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934785553] [2020-10-15 00:06:12,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-10-15 00:06:12,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:12,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-10-15 00:06:12,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2020-10-15 00:06:12,501 INFO L87 Difference]: Start difference. First operand 183 states and 186 transitions. Second operand 86 states. [2020-10-15 00:06:12,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:12,964 INFO L93 Difference]: Finished difference Result 197 states and 204 transitions. [2020-10-15 00:06:12,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-10-15 00:06:12,965 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 180 [2020-10-15 00:06:12,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:12,966 INFO L225 Difference]: With dead ends: 197 [2020-10-15 00:06:12,966 INFO L226 Difference]: Without dead ends: 185 [2020-10-15 00:06:12,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2020-10-15 00:06:12,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-15 00:06:12,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2020-10-15 00:06:12,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-15 00:06:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 188 transitions. [2020-10-15 00:06:12,971 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 188 transitions. Word has length 180 [2020-10-15 00:06:12,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:12,971 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 188 transitions. [2020-10-15 00:06:12,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-10-15 00:06:12,972 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 188 transitions. [2020-10-15 00:06:12,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-15 00:06:12,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:12,973 INFO L422 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:12,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-15 00:06:12,973 INFO L427 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:12,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:12,973 INFO L82 PathProgramCache]: Analyzing trace with hash 407273547, now seen corresponding path program 84 times [2020-10-15 00:06:12,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:12,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022677217] [2020-10-15 00:06:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:13,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:13,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:14,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:14,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-15 00:06:14,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:14,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1937 [2020-10-15 00:06:14,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:14,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:14,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 86 [2020-10-15 00:06:14,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:14,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-15 00:06:14,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:19,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:19,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:19,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:19,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:19,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:19,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:19,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:19,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 85 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:19,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022677217] [2020-10-15 00:06:19,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:19,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2020-10-15 00:06:19,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278031295] [2020-10-15 00:06:19,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-10-15 00:06:19,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:19,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-10-15 00:06:19,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2020-10-15 00:06:19,244 INFO L87 Difference]: Start difference. First operand 185 states and 188 transitions. Second operand 87 states. [2020-10-15 00:06:19,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:19,782 INFO L93 Difference]: Finished difference Result 199 states and 206 transitions. [2020-10-15 00:06:19,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-10-15 00:06:19,783 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 182 [2020-10-15 00:06:19,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:19,784 INFO L225 Difference]: With dead ends: 199 [2020-10-15 00:06:19,784 INFO L226 Difference]: Without dead ends: 187 [2020-10-15 00:06:19,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2020-10-15 00:06:19,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-15 00:06:19,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-10-15 00:06:19,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-15 00:06:19,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 190 transitions. [2020-10-15 00:06:19,788 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 190 transitions. Word has length 182 [2020-10-15 00:06:19,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:19,789 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 190 transitions. [2020-10-15 00:06:19,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-10-15 00:06:19,789 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 190 transitions. [2020-10-15 00:06:19,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-15 00:06:19,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:19,790 INFO L422 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:19,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2020-10-15 00:06:19,790 INFO L427 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:19,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:19,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1487454072, now seen corresponding path program 85 times [2020-10-15 00:06:19,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:19,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347969612] [2020-10-15 00:06:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:19,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:21,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:21,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-15 00:06:21,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:21,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2002 [2020-10-15 00:06:21,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:21,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:21,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 87 [2020-10-15 00:06:21,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:21,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-15 00:06:21,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:26,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:26,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:26,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:26,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:26,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:26,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:26,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:26,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:26,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 86 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:26,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347969612] [2020-10-15 00:06:26,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:26,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2020-10-15 00:06:26,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688408867] [2020-10-15 00:06:26,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-10-15 00:06:26,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:26,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-10-15 00:06:26,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2020-10-15 00:06:26,235 INFO L87 Difference]: Start difference. First operand 187 states and 190 transitions. Second operand 88 states. [2020-10-15 00:06:26,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:26,780 INFO L93 Difference]: Finished difference Result 201 states and 208 transitions. [2020-10-15 00:06:26,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-10-15 00:06:26,781 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 184 [2020-10-15 00:06:26,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:26,783 INFO L225 Difference]: With dead ends: 201 [2020-10-15 00:06:26,783 INFO L226 Difference]: Without dead ends: 189 [2020-10-15 00:06:26,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2020-10-15 00:06:26,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-15 00:06:26,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2020-10-15 00:06:26,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-15 00:06:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 192 transitions. [2020-10-15 00:06:26,787 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 192 transitions. Word has length 184 [2020-10-15 00:06:26,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:26,787 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 192 transitions. [2020-10-15 00:06:26,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-10-15 00:06:26,787 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 192 transitions. [2020-10-15 00:06:26,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-15 00:06:26,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:26,788 INFO L422 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:26,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2020-10-15 00:06:26,788 INFO L427 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:26,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:26,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1254562427, now seen corresponding path program 86 times [2020-10-15 00:06:26,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:26,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087672146] [2020-10-15 00:06:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:26,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:26,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:28,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:28,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 00:06:28,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:28,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2084 [2020-10-15 00:06:28,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:28,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:28,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 88 [2020-10-15 00:06:28,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:28,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-15 00:06:28,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:33,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:33,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:33,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:33,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:33,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:33,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:33,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:33,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:33,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:33,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:33,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:33,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 87 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:33,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087672146] [2020-10-15 00:06:33,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:33,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2020-10-15 00:06:33,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587082677] [2020-10-15 00:06:33,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-10-15 00:06:33,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:33,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-10-15 00:06:33,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2020-10-15 00:06:33,475 INFO L87 Difference]: Start difference. First operand 189 states and 192 transitions. Second operand 89 states. [2020-10-15 00:06:33,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:33,849 INFO L93 Difference]: Finished difference Result 203 states and 210 transitions. [2020-10-15 00:06:33,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-10-15 00:06:33,850 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 186 [2020-10-15 00:06:33,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:33,852 INFO L225 Difference]: With dead ends: 203 [2020-10-15 00:06:33,852 INFO L226 Difference]: Without dead ends: 191 [2020-10-15 00:06:33,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2020-10-15 00:06:33,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-15 00:06:33,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2020-10-15 00:06:33,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-15 00:06:33,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 194 transitions. [2020-10-15 00:06:33,857 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 194 transitions. Word has length 186 [2020-10-15 00:06:33,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:33,857 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 194 transitions. [2020-10-15 00:06:33,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-10-15 00:06:33,857 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 194 transitions. [2020-10-15 00:06:33,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-15 00:06:33,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:33,858 INFO L422 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:33,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-10-15 00:06:33,859 INFO L427 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:33,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:33,859 INFO L82 PathProgramCache]: Analyzing trace with hash -783990974, now seen corresponding path program 87 times [2020-10-15 00:06:33,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:33,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122146398] [2020-10-15 00:06:33,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:33,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:33,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:36,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-15 00:06:36,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:36,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2317 [2020-10-15 00:06:36,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:36,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 89 [2020-10-15 00:06:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-15 00:06:36,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:40,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:40,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:40,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:40,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:40,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:40,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:40,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:40,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:40,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:40,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:40,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:40,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 88 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:40,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122146398] [2020-10-15 00:06:40,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:40,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2020-10-15 00:06:40,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475910927] [2020-10-15 00:06:40,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-10-15 00:06:40,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:40,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-10-15 00:06:40,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2020-10-15 00:06:40,930 INFO L87 Difference]: Start difference. First operand 191 states and 194 transitions. Second operand 90 states. [2020-10-15 00:06:41,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:41,397 INFO L93 Difference]: Finished difference Result 205 states and 212 transitions. [2020-10-15 00:06:41,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-10-15 00:06:41,398 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 188 [2020-10-15 00:06:41,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:41,399 INFO L225 Difference]: With dead ends: 205 [2020-10-15 00:06:41,399 INFO L226 Difference]: Without dead ends: 193 [2020-10-15 00:06:41,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2020-10-15 00:06:41,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-15 00:06:41,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2020-10-15 00:06:41,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-15 00:06:41,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 196 transitions. [2020-10-15 00:06:41,406 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 196 transitions. Word has length 188 [2020-10-15 00:06:41,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:41,406 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 196 transitions. [2020-10-15 00:06:41,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-10-15 00:06:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 196 transitions. [2020-10-15 00:06:41,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-15 00:06:41,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:41,408 INFO L422 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:41,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2020-10-15 00:06:41,408 INFO L427 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:41,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:41,408 INFO L82 PathProgramCache]: Analyzing trace with hash 463609279, now seen corresponding path program 88 times [2020-10-15 00:06:41,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:41,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831586492] [2020-10-15 00:06:41,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:41,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:41,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:43,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:43,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-15 00:06:43,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:43,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2158 [2020-10-15 00:06:43,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:43,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:43,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 90 [2020-10-15 00:06:43,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:43,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-15 00:06:43,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:48,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:48,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:48,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:48,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:48,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:48,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:48,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:48,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:48,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:48,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:48,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 89 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:06:48,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831586492] [2020-10-15 00:06:48,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:48,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2020-10-15 00:06:48,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319337990] [2020-10-15 00:06:48,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-10-15 00:06:48,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:48,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-10-15 00:06:48,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2020-10-15 00:06:48,424 INFO L87 Difference]: Start difference. First operand 193 states and 196 transitions. Second operand 91 states. [2020-10-15 00:06:49,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:49,031 INFO L93 Difference]: Finished difference Result 207 states and 214 transitions. [2020-10-15 00:06:49,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-10-15 00:06:49,032 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 190 [2020-10-15 00:06:49,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:49,033 INFO L225 Difference]: With dead ends: 207 [2020-10-15 00:06:49,034 INFO L226 Difference]: Without dead ends: 195 [2020-10-15 00:06:49,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2020-10-15 00:06:49,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-15 00:06:49,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2020-10-15 00:06:49,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-15 00:06:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 198 transitions. [2020-10-15 00:06:49,039 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 198 transitions. Word has length 190 [2020-10-15 00:06:49,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:49,039 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 198 transitions. [2020-10-15 00:06:49,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-10-15 00:06:49,039 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 198 transitions. [2020-10-15 00:06:49,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-15 00:06:49,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:49,040 INFO L422 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:49,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-15 00:06:49,041 INFO L427 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:49,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:49,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1111576828, now seen corresponding path program 89 times [2020-10-15 00:06:49,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:49,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74591433] [2020-10-15 00:06:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:49,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:49,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:51,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:51,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-15 00:06:51,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:06:51,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2347 [2020-10-15 00:06:51,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:51,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:51,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 91 [2020-10-15 00:06:51,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:06:51,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-15 00:06:51,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0