/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/loop-lit/gj2007.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:53:31,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:53:31,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:53:31,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:53:31,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:53:31,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:53:31,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:53:31,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:53:31,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:53:31,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:53:31,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:53:31,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:53:31,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:53:31,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:53:31,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:53:31,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:53:31,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:53:31,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:53:31,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:53:31,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:53:31,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:53:31,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:53:31,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:53:31,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:53:31,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:53:31,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:53:31,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:53:31,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:53:31,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:53:31,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:53:31,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:53:31,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:53:31,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:53:31,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:53:31,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:53:31,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:53:31,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:53:31,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:53:31,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:53:31,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:53:31,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:53:31,710 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 [2020-10-14 23:53:31,732 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:53:31,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:53:31,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:53:31,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:53:31,734 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:53:31,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:53:31,734 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:53:31,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:53:31,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:53:31,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:53:31,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:53:31,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:53:31,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:53:31,736 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:53:31,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:53:31,736 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:53:31,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:53:31,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:53:31,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:53:31,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:53:31,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:53:31,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:53:31,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:53:31,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:53:31,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:53:31,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:53:31,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:53:31,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:53:31,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:53:31,739 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; [2020-10-14 23:53:32,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:53:32,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:53:32,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:53:32,045 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:53:32,046 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:53:32,047 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.i [2020-10-14 23:53:32,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/656702642/5ef7ad0f02f841219ffc0cd97d0d8ef5/FLAG8341f8230 [2020-10-14 23:53:32,518 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:53:32,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gj2007.i [2020-10-14 23:53:32,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/656702642/5ef7ad0f02f841219ffc0cd97d0d8ef5/FLAG8341f8230 [2020-10-14 23:53:32,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/656702642/5ef7ad0f02f841219ffc0cd97d0d8ef5 [2020-10-14 23:53:32,937 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:53:32,939 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:53:32,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:53:32,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:53:32,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:53:32,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:53:32" (1/1) ... [2020-10-14 23:53:32,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc704b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:32, skipping insertion in model container [2020-10-14 23:53:32,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:53:32" (1/1) ... [2020-10-14 23:53:32,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:53:32,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:53:33,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:53:33,145 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:53:33,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:53:33,175 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:53:33,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:33 WrapperNode [2020-10-14 23:53:33,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:53:33,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:53:33,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:53:33,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:53:33,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:33" (1/1) ... [2020-10-14 23:53:33,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:33" (1/1) ... [2020-10-14 23:53:33,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:33" (1/1) ... [2020-10-14 23:53:33,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:33" (1/1) ... [2020-10-14 23:53:33,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:33" (1/1) ... [2020-10-14 23:53:33,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:33" (1/1) ... [2020-10-14 23:53:33,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:33" (1/1) ... [2020-10-14 23:53:33,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:53:33,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:53:33,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:53:33,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:53:33,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:33" (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 [2020-10-14 23:53:33,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:53:33,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:53:33,353 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 23:53:33,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 23:53:33,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:53:33,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:53:33,354 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:53:33,354 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 23:53:33,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 23:53:33,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:53:33,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:53:33,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:53:33,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:53:33,518 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:53:33,518 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:53:33,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:33 BoogieIcfgContainer [2020-10-14 23:53:33,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:53:33,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:53:33,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:53:33,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:53:33,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:53:32" (1/3) ... [2020-10-14 23:53:33,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36922873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:53:33, skipping insertion in model container [2020-10-14 23:53:33,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:33" (2/3) ... [2020-10-14 23:53:33,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36922873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:53:33, skipping insertion in model container [2020-10-14 23:53:33,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:33" (3/3) ... [2020-10-14 23:53:33,530 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007.i [2020-10-14 23:53:33,540 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:53:33,547 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:53:33,562 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:53:33,586 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:53:33,586 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:53:33,587 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:53:33,587 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:53:33,587 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:53:33,587 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:53:33,587 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:53:33,587 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:53:33,614 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-14 23:53:33,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 23:53:33,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:33,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:33,624 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:33,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:33,632 INFO L82 PathProgramCache]: Analyzing trace with hash -64670033, now seen corresponding path program 1 times [2020-10-14 23:53:33,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:33,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419005848] [2020-10-14 23:53:33,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:33,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:33,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:33,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:53:33,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:33,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 23:53:33,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:33,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:33,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:53:33,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:33,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:53:33,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:53:33,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:33,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:33,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:33,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:33,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:33,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:53:33,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:33,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:33,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:33,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:53:33,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419005848] [2020-10-14 23:53:33,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:53:33,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:53:33,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47907747] [2020-10-14 23:53:33,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:53:33,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:33,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:53:33,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:53:33,892 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-10-14 23:53:33,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:33,935 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2020-10-14 23:53:33,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:53:33,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-14 23:53:33,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:33,946 INFO L225 Difference]: With dead ends: 35 [2020-10-14 23:53:33,946 INFO L226 Difference]: Without dead ends: 14 [2020-10-14 23:53:33,950 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 [2020-10-14 23:53:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-14 23:53:33,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-14 23:53:33,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-14 23:53:33,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-10-14 23:53:33,984 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2020-10-14 23:53:33,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:33,985 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-10-14 23:53:33,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:53:33,985 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-10-14 23:53:33,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 23:53:33,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:33,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:33,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:53:33,987 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:33,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:33,988 INFO L82 PathProgramCache]: Analyzing trace with hash -972579924, now seen corresponding path program 1 times [2020-10-14 23:53:33,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:33,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773867041] [2020-10-14 23:53:33,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:34,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:34,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:34,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:53:34,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:34,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 23:53:34,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:34,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:34,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:53:34,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:53:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:53:34,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:53:34,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:34,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:34,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:34,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:34,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:34,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:53:34,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:34,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:34,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:34,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:53:34,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773867041] [2020-10-14 23:53:34,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:53:34,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:53:34,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735366310] [2020-10-14 23:53:34,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:53:34,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:34,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:53:34,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:53:34,104 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2020-10-14 23:53:34,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:34,135 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-10-14 23:53:34,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:53:34,136 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-14 23:53:34,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:34,137 INFO L225 Difference]: With dead ends: 21 [2020-10-14 23:53:34,137 INFO L226 Difference]: Without dead ends: 16 [2020-10-14 23:53:34,138 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 [2020-10-14 23:53:34,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-14 23:53:34,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-14 23:53:34,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-14 23:53:34,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-10-14 23:53:34,144 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-10-14 23:53:34,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:34,144 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-10-14 23:53:34,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:53:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-10-14 23:53:34,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 23:53:34,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:34,146 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:34,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:53:34,146 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:34,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:34,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1538365785, now seen corresponding path program 1 times [2020-10-14 23:53:34,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:34,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055578907] [2020-10-14 23:53:34,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:34,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:34,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:34,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:34,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:53:34,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:34,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 23:53:34,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:34,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:34,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:53:34,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:53:34,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 23:53:34,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 23:53:34,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:34,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:34,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:34,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:34,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:34,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:53:34,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:34,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:34,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:34,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:34,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:53:34,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055578907] [2020-10-14 23:53:34,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:34,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 23:53:34,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814390259] [2020-10-14 23:53:34,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:53:34,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:34,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:53:34,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:53:34,298 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2020-10-14 23:53:34,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:34,328 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-10-14 23:53:34,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:53:34,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-14 23:53:34,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:34,332 INFO L225 Difference]: With dead ends: 23 [2020-10-14 23:53:34,332 INFO L226 Difference]: Without dead ends: 18 [2020-10-14 23:53:34,333 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 [2020-10-14 23:53:34,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-14 23:53:34,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-14 23:53:34,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-14 23:53:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-10-14 23:53:34,339 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2020-10-14 23:53:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:34,339 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-10-14 23:53:34,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:53:34,339 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-10-14 23:53:34,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 23:53:34,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:34,340 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:34,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:53:34,341 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:34,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:34,341 INFO L82 PathProgramCache]: Analyzing trace with hash 202268386, now seen corresponding path program 2 times [2020-10-14 23:53:34,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:34,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550819887] [2020-10-14 23:53:34,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:34,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:34,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:34,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:34,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 23:53:34,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:34,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 23:53:34,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:34,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:53:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:53:34,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:34,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:34,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:34,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:34,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:34,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:34,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:53:34,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:34,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:34,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:34,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:34,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:34,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:34,502 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:34,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550819887] [2020-10-14 23:53:34,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:34,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 23:53:34,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889579756] [2020-10-14 23:53:34,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:53:34,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:34,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:53:34,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:53:34,505 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 4 states. [2020-10-14 23:53:34,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:34,528 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-10-14 23:53:34,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:53:34,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-14 23:53:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:34,529 INFO L225 Difference]: With dead ends: 29 [2020-10-14 23:53:34,530 INFO L226 Difference]: Without dead ends: 19 [2020-10-14 23:53:34,530 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 [2020-10-14 23:53:34,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-14 23:53:34,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-14 23:53:34,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-14 23:53:34,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-10-14 23:53:34,536 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2020-10-14 23:53:34,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:34,536 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-10-14 23:53:34,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:53:34,536 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-10-14 23:53:34,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 23:53:34,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:34,537 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:34,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:53:34,538 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:34,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:34,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1692511713, now seen corresponding path program 3 times [2020-10-14 23:53:34,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:34,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177657533] [2020-10-14 23:53:34,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:34,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:34,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:34,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:34,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:53:34,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:34,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 23:53:34,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:34,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:34,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:53:34,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:34,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:53:34,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:34,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:34,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:34,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:34,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:34,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:34,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:34,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:34,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:34,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:34,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:34,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177657533] [2020-10-14 23:53:34,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:34,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 23:53:34,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893144414] [2020-10-14 23:53:34,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:53:34,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:34,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:53:34,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:53:34,687 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2020-10-14 23:53:34,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:34,712 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-10-14 23:53:34,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:53:34,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-14 23:53:34,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:34,713 INFO L225 Difference]: With dead ends: 31 [2020-10-14 23:53:34,714 INFO L226 Difference]: Without dead ends: 21 [2020-10-14 23:53:34,714 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 [2020-10-14 23:53:34,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-14 23:53:34,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-14 23:53:34,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 23:53:34,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-14 23:53:34,720 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2020-10-14 23:53:34,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:34,720 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-14 23:53:34,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:53:34,720 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-14 23:53:34,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:53:34,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:34,721 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:34,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:53:34,722 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:34,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:34,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1510053348, now seen corresponding path program 4 times [2020-10-14 23:53:34,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:34,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009551733] [2020-10-14 23:53:34,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:34,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:34,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:34,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:34,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:53:34,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:34,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 23:53:34,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:34,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:34,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:53:34,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:34,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:53:34,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:34,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:34,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:34,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:34,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:34,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:34,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:34,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:34,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:34,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:34,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:34,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:34,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:34,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009551733] [2020-10-14 23:53:34,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:34,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:53:34,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344251610] [2020-10-14 23:53:34,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:53:34,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:34,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:53:34,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:53:34,912 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2020-10-14 23:53:34,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:34,942 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-10-14 23:53:34,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:53:34,943 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-14 23:53:34,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:34,943 INFO L225 Difference]: With dead ends: 33 [2020-10-14 23:53:34,944 INFO L226 Difference]: Without dead ends: 23 [2020-10-14 23:53:34,944 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 [2020-10-14 23:53:34,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-14 23:53:34,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-14 23:53:34,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-14 23:53:34,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-14 23:53:34,949 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2020-10-14 23:53:34,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:34,950 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-14 23:53:34,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:53:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-14 23:53:34,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:53:34,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:34,951 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:34,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:53:34,951 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:34,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:34,952 INFO L82 PathProgramCache]: Analyzing trace with hash 2033743577, now seen corresponding path program 5 times [2020-10-14 23:53:34,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:34,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826002208] [2020-10-14 23:53:34,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:34,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:34,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:35,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:35,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:53:35,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:35,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 23:53:35,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:35,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:53:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:53:35,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:35,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:35,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:35,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:35,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:35,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:35,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:35,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:35,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:35,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:35,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:35,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:35,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:35,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826002208] [2020-10-14 23:53:35,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:35,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:53:35,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874578917] [2020-10-14 23:53:35,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:53:35,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:35,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:53:35,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:53:35,101 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 7 states. [2020-10-14 23:53:35,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:35,129 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-10-14 23:53:35,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:53:35,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-14 23:53:35,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:35,131 INFO L225 Difference]: With dead ends: 35 [2020-10-14 23:53:35,131 INFO L226 Difference]: Without dead ends: 25 [2020-10-14 23:53:35,132 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 [2020-10-14 23:53:35,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-14 23:53:35,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-14 23:53:35,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-14 23:53:35,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-14 23:53:35,137 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2020-10-14 23:53:35,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:35,137 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-14 23:53:35,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:53:35,138 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-14 23:53:35,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:53:35,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:35,138 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:35,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:53:35,139 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:35,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:35,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1713522774, now seen corresponding path program 6 times [2020-10-14 23:53:35,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:35,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586230212] [2020-10-14 23:53:35,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:35,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:35,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:35,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:35,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:53:35,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:35,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 23:53:35,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:35,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:35,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:53:35,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:35,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:53:35,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:35,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:35,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:35,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:35,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:35,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:35,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:35,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:35,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:35,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:35,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:35,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:35,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:35,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586230212] [2020-10-14 23:53:35,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:35,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:53:35,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679649507] [2020-10-14 23:53:35,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:53:35,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:35,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:53:35,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:53:35,314 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 8 states. [2020-10-14 23:53:35,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:35,352 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-10-14 23:53:35,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:53:35,353 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-14 23:53:35,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:35,354 INFO L225 Difference]: With dead ends: 37 [2020-10-14 23:53:35,354 INFO L226 Difference]: Without dead ends: 27 [2020-10-14 23:53:35,354 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 [2020-10-14 23:53:35,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-14 23:53:35,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-14 23:53:35,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 23:53:35,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-14 23:53:35,360 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2020-10-14 23:53:35,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:35,360 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-14 23:53:35,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:53:35,361 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-14 23:53:35,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:53:35,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:35,362 INFO L422 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:35,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:53:35,362 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:35,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:35,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1075990893, now seen corresponding path program 7 times [2020-10-14 23:53:35,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:35,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661970070] [2020-10-14 23:53:35,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:35,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:35,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:35,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:35,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:53:35,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:35,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 23:53:35,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:35,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:53:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:53:35,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:35,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:35,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:35,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:35,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:35,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:35,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:35,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:35,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:35,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:35,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661970070] [2020-10-14 23:53:35,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:35,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:53:35,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660025741] [2020-10-14 23:53:35,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:53:35,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:35,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:53:35,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:53:35,558 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 9 states. [2020-10-14 23:53:35,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:35,598 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-14 23:53:35,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:53:35,599 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-14 23:53:35,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:35,600 INFO L225 Difference]: With dead ends: 39 [2020-10-14 23:53:35,600 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 23:53:35,600 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 [2020-10-14 23:53:35,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 23:53:35,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-14 23:53:35,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 23:53:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-14 23:53:35,605 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2020-10-14 23:53:35,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:35,605 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-14 23:53:35,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:53:35,606 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-14 23:53:35,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 23:53:35,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:35,607 INFO L422 BasicCegarLoop]: trace histogram [9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:35,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:53:35,607 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:35,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:35,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1739032176, now seen corresponding path program 8 times [2020-10-14 23:53:35,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:35,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312394426] [2020-10-14 23:53:35,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:35,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:35,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:35,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:35,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:53:35,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:35,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 23:53:35,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:35,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:53:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:53:35,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:35,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:35,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:35,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:35,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:35,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:35,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:35,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:35,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:35,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:35,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:35,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:35,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312394426] [2020-10-14 23:53:35,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:35,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:53:35,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234285731] [2020-10-14 23:53:35,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:53:35,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:35,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:53:35,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:53:35,822 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 10 states. [2020-10-14 23:53:35,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:35,865 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-10-14 23:53:35,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:53:35,866 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-14 23:53:35,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:35,867 INFO L225 Difference]: With dead ends: 41 [2020-10-14 23:53:35,867 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 23:53:35,867 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 [2020-10-14 23:53:35,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 23:53:35,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-14 23:53:35,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 23:53:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-14 23:53:35,872 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 28 [2020-10-14 23:53:35,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:35,872 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-14 23:53:35,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:53:35,872 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-14 23:53:35,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:53:35,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:35,873 INFO L422 BasicCegarLoop]: trace histogram [10, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:35,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:53:35,874 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:35,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:35,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1028421965, now seen corresponding path program 9 times [2020-10-14 23:53:35,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:35,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025941043] [2020-10-14 23:53:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:35,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:35,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:36,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:36,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:53:36,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:36,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 23:53:36,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:36,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:53:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:53:36,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:36,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:36,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:36,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:36,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:36,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:36,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:53:36,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:36,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:36,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:36,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:36,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:53:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:36,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025941043] [2020-10-14 23:53:36,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:36,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:53:36,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874898494] [2020-10-14 23:53:36,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:53:36,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:36,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:53:36,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:53:36,182 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 11 states. [2020-10-14 23:53:36,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:36,230 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-14 23:53:36,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:53:36,231 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-14 23:53:36,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:36,232 INFO L225 Difference]: With dead ends: 43 [2020-10-14 23:53:36,232 INFO L226 Difference]: Without dead ends: 33 [2020-10-14 23:53:36,233 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 [2020-10-14 23:53:36,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-14 23:53:36,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-14 23:53:36,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 23:53:36,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-14 23:53:36,239 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 30 [2020-10-14 23:53:36,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:36,239 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-14 23:53:36,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:53:36,240 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-14 23:53:36,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:53:36,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:36,243 INFO L422 BasicCegarLoop]: trace histogram [11, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:36,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:53:36,243 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:36,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:36,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1967095242, now seen corresponding path program 10 times [2020-10-14 23:53:36,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:36,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390440618] [2020-10-14 23:53:36,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:36,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:36,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:36,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:36,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:53:36,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 23:53:36,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:36,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:53:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:53:36,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:36,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:36,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:36,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:36,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:36,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:36,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:36,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:36,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:36,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390440618] [2020-10-14 23:53:36,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:36,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:53:36,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814473021] [2020-10-14 23:53:36,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:53:36,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:36,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:53:36,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:53:36,565 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 12 states. [2020-10-14 23:53:36,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:36,626 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-14 23:53:36,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:53:36,628 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-14 23:53:36,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:36,628 INFO L225 Difference]: With dead ends: 45 [2020-10-14 23:53:36,629 INFO L226 Difference]: Without dead ends: 35 [2020-10-14 23:53:36,631 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 [2020-10-14 23:53:36,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-14 23:53:36,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-14 23:53:36,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 23:53:36,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-10-14 23:53:36,637 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 32 [2020-10-14 23:53:36,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:36,637 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-10-14 23:53:36,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:53:36,637 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-10-14 23:53:36,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:53:36,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:36,639 INFO L422 BasicCegarLoop]: trace histogram [12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:36,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:53:36,639 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:36,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:36,639 INFO L82 PathProgramCache]: Analyzing trace with hash 2088982279, now seen corresponding path program 11 times [2020-10-14 23:53:36,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:36,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313839897] [2020-10-14 23:53:36,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:36,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:36,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:36,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:36,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:53:36,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:36,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 23:53:36,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:36,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:36,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:53:36,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:36,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:53:36,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:36,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:36,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:36,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:36,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:36,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:36,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:36,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:36,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:36,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:36,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:36,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313839897] [2020-10-14 23:53:36,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:36,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:53:36,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820060919] [2020-10-14 23:53:36,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:53:36,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:36,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:53:36,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:53:36,982 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 13 states. [2020-10-14 23:53:37,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:37,030 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-10-14 23:53:37,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:53:37,031 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-10-14 23:53:37,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:37,032 INFO L225 Difference]: With dead ends: 47 [2020-10-14 23:53:37,032 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 23:53:37,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:53:37,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 23:53:37,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-14 23:53:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 23:53:37,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-10-14 23:53:37,037 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 34 [2020-10-14 23:53:37,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:37,037 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-10-14 23:53:37,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:53:37,037 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-10-14 23:53:37,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:53:37,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:37,038 INFO L422 BasicCegarLoop]: trace histogram [13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:37,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:53:37,038 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:37,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:37,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1036659452, now seen corresponding path program 12 times [2020-10-14 23:53:37,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:37,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430093720] [2020-10-14 23:53:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:37,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:37,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:37,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:37,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:53:37,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:37,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 23:53:37,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:37,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:37,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:53:37,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:37,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:53:37,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:37,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:37,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:37,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:37,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:37,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:37,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:37,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:37,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:37,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:37,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:37,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:37,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:37,332 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:37,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430093720] [2020-10-14 23:53:37,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:37,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:53:37,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493890939] [2020-10-14 23:53:37,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:53:37,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:37,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:53:37,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:53:37,334 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 14 states. [2020-10-14 23:53:37,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:37,380 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-10-14 23:53:37,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:53:37,381 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-10-14 23:53:37,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:37,382 INFO L225 Difference]: With dead ends: 49 [2020-10-14 23:53:37,382 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 23:53:37,383 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 [2020-10-14 23:53:37,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 23:53:37,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-14 23:53:37,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 23:53:37,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-14 23:53:37,388 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 36 [2020-10-14 23:53:37,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:37,388 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-14 23:53:37,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:53:37,389 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-14 23:53:37,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:53:37,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:37,389 INFO L422 BasicCegarLoop]: trace histogram [14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:37,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:53:37,390 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:37,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:37,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1698744257, now seen corresponding path program 13 times [2020-10-14 23:53:37,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:37,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867438025] [2020-10-14 23:53:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:37,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:37,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:37,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:37,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:53:37,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:37,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 23:53:37,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:37,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:37,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:53:37,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:37,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:53:37,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:37,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:37,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:37,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:37,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:37,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:37,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:37,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:37,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:37,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:37,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:37,735 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 39 proven. 156 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:37,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867438025] [2020-10-14 23:53:37,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:37,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:53:37,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294947750] [2020-10-14 23:53:37,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:53:37,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:37,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:53:37,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:53:37,737 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 15 states. [2020-10-14 23:53:37,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:37,795 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-14 23:53:37,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:53:37,796 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-10-14 23:53:37,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:37,797 INFO L225 Difference]: With dead ends: 51 [2020-10-14 23:53:37,797 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 23:53:37,797 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 [2020-10-14 23:53:37,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 23:53:37,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-14 23:53:37,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 23:53:37,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-14 23:53:37,802 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 38 [2020-10-14 23:53:37,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:37,802 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-14 23:53:37,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:53:37,803 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-14 23:53:37,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:53:37,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:37,803 INFO L422 BasicCegarLoop]: trace histogram [15, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:37,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:53:37,804 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:37,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:37,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1901723454, now seen corresponding path program 14 times [2020-10-14 23:53:37,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:37,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453622952] [2020-10-14 23:53:37,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:37,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:37,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:38,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:38,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 23:53:38,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:38,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 23:53:38,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:38,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:53:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:53:38,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:38,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:38,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:38,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:38,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:38,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:38,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:38,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:38,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:38,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 42 proven. 182 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:38,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453622952] [2020-10-14 23:53:38,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:38,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:53:38,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817502015] [2020-10-14 23:53:38,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:53:38,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:38,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:53:38,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:53:38,182 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 16 states. [2020-10-14 23:53:38,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:38,236 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-14 23:53:38,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:53:38,237 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2020-10-14 23:53:38,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:38,238 INFO L225 Difference]: With dead ends: 53 [2020-10-14 23:53:38,238 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 23:53:38,239 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 [2020-10-14 23:53:38,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 23:53:38,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-14 23:53:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 23:53:38,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-10-14 23:53:38,243 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 40 [2020-10-14 23:53:38,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:38,243 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-10-14 23:53:38,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:53:38,244 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-10-14 23:53:38,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:53:38,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:38,244 INFO L422 BasicCegarLoop]: trace histogram [16, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:38,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:53:38,245 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:38,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:38,245 INFO L82 PathProgramCache]: Analyzing trace with hash -603763845, now seen corresponding path program 15 times [2020-10-14 23:53:38,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:38,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778576686] [2020-10-14 23:53:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:38,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:38,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:38,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:38,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:53:38,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:38,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 23:53:38,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:38,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:53:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:53:38,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:38,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:38,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:38,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:38,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:38,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:38,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:38,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:38,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:38,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:38,658 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:38,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778576686] [2020-10-14 23:53:38,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:38,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:53:38,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321695060] [2020-10-14 23:53:38,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:53:38,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:38,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:53:38,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:53:38,661 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 17 states. [2020-10-14 23:53:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:38,724 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2020-10-14 23:53:38,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:53:38,724 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 42 [2020-10-14 23:53:38,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:38,725 INFO L225 Difference]: With dead ends: 55 [2020-10-14 23:53:38,725 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 23:53:38,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:53:38,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 23:53:38,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-14 23:53:38,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 23:53:38,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-10-14 23:53:38,731 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 42 [2020-10-14 23:53:38,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:38,731 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-10-14 23:53:38,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:53:38,731 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-10-14 23:53:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:53:38,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:38,732 INFO L422 BasicCegarLoop]: trace histogram [17, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:38,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:53:38,732 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:38,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:38,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1099594872, now seen corresponding path program 16 times [2020-10-14 23:53:38,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:38,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413812271] [2020-10-14 23:53:38,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:38,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:38,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:39,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:39,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:53:39,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:39,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-14 23:53:39,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:39,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:39,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:53:39,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:39,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:53:39,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:39,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:39,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:39,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:39,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:39,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:39,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:39,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:39,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:39,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 48 proven. 240 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:39,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413812271] [2020-10-14 23:53:39,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:39,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:53:39,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380028743] [2020-10-14 23:53:39,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:53:39,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:39,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:53:39,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:53:39,234 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 18 states. [2020-10-14 23:53:39,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:39,298 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-14 23:53:39,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:53:39,299 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 44 [2020-10-14 23:53:39,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:39,299 INFO L225 Difference]: With dead ends: 57 [2020-10-14 23:53:39,299 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 23:53:39,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:53:39,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 23:53:39,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-14 23:53:39,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 23:53:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-10-14 23:53:39,304 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 44 [2020-10-14 23:53:39,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:39,305 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-10-14 23:53:39,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:53:39,305 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-10-14 23:53:39,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:53:39,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:39,306 INFO L422 BasicCegarLoop]: trace histogram [18, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:39,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:53:39,306 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:39,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:39,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1644782133, now seen corresponding path program 17 times [2020-10-14 23:53:39,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:39,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506053779] [2020-10-14 23:53:39,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:39,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:39,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:39,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:39,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 23:53:39,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:39,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-14 23:53:39,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:39,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:39,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:53:39,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:39,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:53:39,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:39,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:39,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:39,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:39,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:39,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:39,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:39,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:39,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 51 proven. 272 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:39,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506053779] [2020-10-14 23:53:39,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:39,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:53:39,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165227288] [2020-10-14 23:53:39,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:53:39,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:39,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:53:39,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:53:39,893 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 19 states. [2020-10-14 23:53:39,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:39,961 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-10-14 23:53:39,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:53:39,962 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 46 [2020-10-14 23:53:39,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:39,962 INFO L225 Difference]: With dead ends: 59 [2020-10-14 23:53:39,962 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 23:53:39,963 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 [2020-10-14 23:53:39,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 23:53:39,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-14 23:53:39,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 23:53:39,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-10-14 23:53:39,967 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 46 [2020-10-14 23:53:39,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:39,968 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-10-14 23:53:39,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:53:39,968 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-10-14 23:53:39,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 23:53:39,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:39,968 INFO L422 BasicCegarLoop]: trace histogram [19, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:39,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:53:39,969 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:39,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:39,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1583729842, now seen corresponding path program 18 times [2020-10-14 23:53:39,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:39,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161130622] [2020-10-14 23:53:39,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:39,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:39,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:40,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:40,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:53:40,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:40,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-14 23:53:40,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:40,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:40,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:53:40,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:40,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:53:40,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:40,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:40,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:40,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:40,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:40,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:40,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:40,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:40,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:40,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 54 proven. 306 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:40,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161130622] [2020-10-14 23:53:40,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:40,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:53:40,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684328093] [2020-10-14 23:53:40,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:53:40,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:40,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:53:40,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:53:40,574 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 20 states. [2020-10-14 23:53:40,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:40,643 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-14 23:53:40,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:53:40,644 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 48 [2020-10-14 23:53:40,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:40,644 INFO L225 Difference]: With dead ends: 61 [2020-10-14 23:53:40,645 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 23:53:40,645 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 [2020-10-14 23:53:40,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 23:53:40,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-14 23:53:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 23:53:40,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-10-14 23:53:40,649 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 48 [2020-10-14 23:53:40,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:40,650 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-10-14 23:53:40,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:53:40,650 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-10-14 23:53:40,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:53:40,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:40,651 INFO L422 BasicCegarLoop]: trace histogram [20, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:40,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:53:40,651 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:40,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:40,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1252946961, now seen corresponding path program 19 times [2020-10-14 23:53:40,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:40,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004785753] [2020-10-14 23:53:40,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:40,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:40,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:40,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:40,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:53:40,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:40,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-14 23:53:40,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:40,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:53:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:40,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 23:53:40,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:41,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:41,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:41,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:41,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:41,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:41,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:41,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:41,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:41,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:41,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:41,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:41,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 57 proven. 342 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:41,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004785753] [2020-10-14 23:53:41,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:41,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:53:41,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863072802] [2020-10-14 23:53:41,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:53:41,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:41,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:53:41,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:53:41,288 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 21 states. [2020-10-14 23:53:41,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:41,367 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-10-14 23:53:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:53:41,367 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 50 [2020-10-14 23:53:41,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:41,368 INFO L225 Difference]: With dead ends: 63 [2020-10-14 23:53:41,368 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 23:53:41,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:53:41,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 23:53:41,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-14 23:53:41,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 23:53:41,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-10-14 23:53:41,374 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 50 [2020-10-14 23:53:41,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:41,374 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-10-14 23:53:41,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:53:41,374 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-10-14 23:53:41,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:53:41,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:41,375 INFO L422 BasicCegarLoop]: trace histogram [21, 19, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:41,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:53:41,375 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:41,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:41,375 INFO L82 PathProgramCache]: Analyzing trace with hash 4878316, now seen corresponding path program 20 times [2020-10-14 23:53:41,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:41,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659387119] [2020-10-14 23:53:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:41,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:41,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:41,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:41,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 23:53:41,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:41,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-14 23:53:41,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:41,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:53:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:53:41,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:41,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:41,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:41,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:41,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:41,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:41,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:41,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:42,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:42,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:42,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:42,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:42,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 60 proven. 380 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:42,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659387119] [2020-10-14 23:53:42,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:42,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:53:42,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242133042] [2020-10-14 23:53:42,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:53:42,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:42,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:53:42,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:53:42,008 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 22 states. [2020-10-14 23:53:42,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:42,087 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-10-14 23:53:42,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:53:42,090 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 52 [2020-10-14 23:53:42,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:42,090 INFO L225 Difference]: With dead ends: 65 [2020-10-14 23:53:42,091 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 23:53:42,091 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 [2020-10-14 23:53:42,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 23:53:42,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-14 23:53:42,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 23:53:42,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-10-14 23:53:42,098 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 52 [2020-10-14 23:53:42,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:42,099 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-10-14 23:53:42,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:53:42,099 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-10-14 23:53:42,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 23:53:42,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:42,099 INFO L422 BasicCegarLoop]: trace histogram [22, 20, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:42,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:53:42,100 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:42,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1889159337, now seen corresponding path program 21 times [2020-10-14 23:53:42,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:42,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127662608] [2020-10-14 23:53:42,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:42,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:42,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:42,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:42,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 23:53:42,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:42,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-14 23:53:42,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:42,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:53:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:53:42,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:42,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:42,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:42,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:42,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:42,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:42,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:42,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:42,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:42,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:42,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:42,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:42,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:42,798 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 63 proven. 420 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:42,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127662608] [2020-10-14 23:53:42,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:42,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:53:42,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277818699] [2020-10-14 23:53:42,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:53:42,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:42,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:53:42,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:53:42,803 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 23 states. [2020-10-14 23:53:42,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:42,875 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-10-14 23:53:42,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:53:42,876 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 54 [2020-10-14 23:53:42,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:42,876 INFO L225 Difference]: With dead ends: 67 [2020-10-14 23:53:42,877 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 23:53:42,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:53:42,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 23:53:42,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-14 23:53:42,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:53:42,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-10-14 23:53:42,887 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 54 [2020-10-14 23:53:42,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:42,887 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-10-14 23:53:42,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:53:42,887 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-10-14 23:53:42,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 23:53:42,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:42,890 INFO L422 BasicCegarLoop]: trace histogram [23, 21, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:42,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:53:42,890 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:42,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:42,890 INFO L82 PathProgramCache]: Analyzing trace with hash 207021606, now seen corresponding path program 22 times [2020-10-14 23:53:42,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:42,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735399637] [2020-10-14 23:53:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:42,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:42,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:43,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:43,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 23:53:43,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:43,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-14 23:53:43,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:43,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:43,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:53:43,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:43,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:53:43,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:43,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:43,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:43,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:43,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:43,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:43,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:43,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:43,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 66 proven. 462 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:43,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735399637] [2020-10-14 23:53:43,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:43,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 23:53:43,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490113077] [2020-10-14 23:53:43,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 23:53:43,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:43,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 23:53:43,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:53:43,572 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 24 states. [2020-10-14 23:53:43,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:43,678 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2020-10-14 23:53:43,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:53:43,679 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 56 [2020-10-14 23:53:43,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:43,680 INFO L225 Difference]: With dead ends: 69 [2020-10-14 23:53:43,680 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 23:53:43,681 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 [2020-10-14 23:53:43,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 23:53:43,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-14 23:53:43,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 23:53:43,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-10-14 23:53:43,686 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 56 [2020-10-14 23:53:43,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:43,687 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-10-14 23:53:43,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 23:53:43,687 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-10-14 23:53:43,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 23:53:43,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:43,696 INFO L422 BasicCegarLoop]: trace histogram [24, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:43,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:53:43,696 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:43,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:43,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1419634589, now seen corresponding path program 23 times [2020-10-14 23:53:43,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:43,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5592953] [2020-10-14 23:53:43,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:43,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:43,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:44,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:44,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:53:44,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:44,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-14 23:53:44,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:44,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 23:53:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 23:53:44,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:44,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:44,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:44,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:44,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:44,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:44,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:44,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:44,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:44,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:44,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:44,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:44,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 69 proven. 506 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:44,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5592953] [2020-10-14 23:53:44,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:44,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 23:53:44,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003141600] [2020-10-14 23:53:44,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 23:53:44,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:44,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 23:53:44,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:53:44,436 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 25 states. [2020-10-14 23:53:44,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:44,521 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2020-10-14 23:53:44,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:53:44,521 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 58 [2020-10-14 23:53:44,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:44,522 INFO L225 Difference]: With dead ends: 71 [2020-10-14 23:53:44,522 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 23:53:44,523 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 [2020-10-14 23:53:44,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 23:53:44,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-14 23:53:44,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 23:53:44,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-10-14 23:53:44,527 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 58 [2020-10-14 23:53:44,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:44,528 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-10-14 23:53:44,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 23:53:44,529 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-10-14 23:53:44,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:53:44,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:44,529 INFO L422 BasicCegarLoop]: trace histogram [25, 23, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:44,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:53:44,530 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:44,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:44,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1268142240, now seen corresponding path program 24 times [2020-10-14 23:53:44,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:44,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439559139] [2020-10-14 23:53:44,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:44,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:44,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:44,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:44,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 23:53:44,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:44,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-14 23:53:44,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:44,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:53:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 23:53:44,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:45,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:45,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:45,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:45,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:45,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:45,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:45,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:45,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:45,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:45,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:45,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:45,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 72 proven. 552 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:45,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439559139] [2020-10-14 23:53:45,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:45,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 23:53:45,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241066810] [2020-10-14 23:53:45,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 23:53:45,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:45,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 23:53:45,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:53:45,321 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 26 states. [2020-10-14 23:53:45,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:45,395 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2020-10-14 23:53:45,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:53:45,395 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 60 [2020-10-14 23:53:45,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:45,396 INFO L225 Difference]: With dead ends: 73 [2020-10-14 23:53:45,396 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 23:53:45,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:53:45,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 23:53:45,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-14 23:53:45,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 23:53:45,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-10-14 23:53:45,401 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 60 [2020-10-14 23:53:45,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:45,401 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-10-14 23:53:45,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 23:53:45,401 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-10-14 23:53:45,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 23:53:45,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:45,402 INFO L422 BasicCegarLoop]: trace histogram [26, 24, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:45,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 23:53:45,403 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:45,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:45,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1712882915, now seen corresponding path program 25 times [2020-10-14 23:53:45,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:45,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912588748] [2020-10-14 23:53:45,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:45,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:45,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:45,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:45,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 23:53:45,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:45,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 23:53:45,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:45,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 23:53:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 23:53:45,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:46,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:46,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:46,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:46,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:46,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:46,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:46,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:46,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:46,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:46,062 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 75 proven. 600 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:46,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912588748] [2020-10-14 23:53:46,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:46,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 23:53:46,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079325474] [2020-10-14 23:53:46,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 23:53:46,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:46,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 23:53:46,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:53:46,064 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 27 states. [2020-10-14 23:53:46,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:46,179 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-14 23:53:46,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:53:46,180 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 62 [2020-10-14 23:53:46,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:46,181 INFO L225 Difference]: With dead ends: 75 [2020-10-14 23:53:46,181 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 23:53:46,181 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 [2020-10-14 23:53:46,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 23:53:46,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-14 23:53:46,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 23:53:46,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-10-14 23:53:46,185 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 62 [2020-10-14 23:53:46,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:46,185 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-10-14 23:53:46,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 23:53:46,186 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-10-14 23:53:46,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 23:53:46,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:46,186 INFO L422 BasicCegarLoop]: trace histogram [27, 25, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:46,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 23:53:46,187 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:46,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:46,187 INFO L82 PathProgramCache]: Analyzing trace with hash 388058010, now seen corresponding path program 26 times [2020-10-14 23:53:46,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:46,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74924228] [2020-10-14 23:53:46,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:46,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:46,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:46,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:46,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 23:53:46,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:46,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-14 23:53:46,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:46,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:46,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 23:53:46,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:46,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 23:53:46,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:46,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:46,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:46,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:46,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:46,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:46,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:46,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:46,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:46,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:46,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:46,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:46,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 78 proven. 650 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:46,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74924228] [2020-10-14 23:53:46,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:46,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 23:53:46,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593134335] [2020-10-14 23:53:46,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 23:53:46,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:46,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 23:53:46,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:53:46,997 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 28 states. [2020-10-14 23:53:47,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:47,104 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-10-14 23:53:47,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:53:47,105 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 64 [2020-10-14 23:53:47,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:47,106 INFO L225 Difference]: With dead ends: 77 [2020-10-14 23:53:47,106 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 23:53:47,106 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 [2020-10-14 23:53:47,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 23:53:47,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-14 23:53:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 23:53:47,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2020-10-14 23:53:47,111 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 64 [2020-10-14 23:53:47,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:47,112 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2020-10-14 23:53:47,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 23:53:47,112 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2020-10-14 23:53:47,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 23:53:47,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:47,113 INFO L422 BasicCegarLoop]: trace histogram [28, 26, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:47,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 23:53:47,113 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:47,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:47,113 INFO L82 PathProgramCache]: Analyzing trace with hash 757657815, now seen corresponding path program 27 times [2020-10-14 23:53:47,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:47,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267645927] [2020-10-14 23:53:47,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:47,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:47,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:47,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:53:47,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:47,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-14 23:53:47,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:47,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:53:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 23:53:47,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:48,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:48,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:48,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:48,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:48,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:48,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:48,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:48,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:48,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:48,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:48,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 81 proven. 702 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:48,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267645927] [2020-10-14 23:53:48,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:48,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 23:53:48,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525374581] [2020-10-14 23:53:48,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 23:53:48,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:48,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 23:53:48,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:53:48,076 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 29 states. [2020-10-14 23:53:48,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:48,212 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2020-10-14 23:53:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 23:53:48,212 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 66 [2020-10-14 23:53:48,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:48,214 INFO L225 Difference]: With dead ends: 79 [2020-10-14 23:53:48,214 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 23:53:48,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:53:48,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 23:53:48,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-14 23:53:48,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 23:53:48,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2020-10-14 23:53:48,222 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 66 [2020-10-14 23:53:48,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:48,222 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2020-10-14 23:53:48,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 23:53:48,223 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2020-10-14 23:53:48,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 23:53:48,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:48,224 INFO L422 BasicCegarLoop]: trace histogram [29, 27, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:48,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 23:53:48,224 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:48,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:48,225 INFO L82 PathProgramCache]: Analyzing trace with hash -539215148, now seen corresponding path program 28 times [2020-10-14 23:53:48,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:48,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351071939] [2020-10-14 23:53:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:48,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:48,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:48,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:48,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:53:48,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:48,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-14 23:53:48,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:48,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 23:53:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 23:53:48,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:49,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:49,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:49,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:49,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:49,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:49,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:49,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:49,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:49,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:49,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:49,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:49,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:49,169 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 84 proven. 756 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:49,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351071939] [2020-10-14 23:53:49,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:49,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 23:53:49,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683682566] [2020-10-14 23:53:49,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 23:53:49,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:49,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 23:53:49,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:53:49,174 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 30 states. [2020-10-14 23:53:49,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:49,292 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2020-10-14 23:53:49,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 23:53:49,293 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 68 [2020-10-14 23:53:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:49,294 INFO L225 Difference]: With dead ends: 81 [2020-10-14 23:53:49,294 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 23:53:49,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:53:49,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 23:53:49,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-14 23:53:49,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 23:53:49,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2020-10-14 23:53:49,299 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 68 [2020-10-14 23:53:49,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:49,300 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2020-10-14 23:53:49,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 23:53:49,300 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2020-10-14 23:53:49,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 23:53:49,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:49,301 INFO L422 BasicCegarLoop]: trace histogram [30, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:49,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 23:53:49,301 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:49,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:49,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1293616751, now seen corresponding path program 29 times [2020-10-14 23:53:49,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:49,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876160759] [2020-10-14 23:53:49,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:49,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:49,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:49,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:49,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 23:53:49,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:49,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-14 23:53:49,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:49,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:49,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 23:53:49,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:49,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 23:53:49,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:50,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:50,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:50,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:50,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:50,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:50,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:50,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:50,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:50,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:50,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:50,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:50,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 87 proven. 812 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:50,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876160759] [2020-10-14 23:53:50,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:50,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 23:53:50,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960233311] [2020-10-14 23:53:50,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 23:53:50,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:50,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 23:53:50,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:53:50,586 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 31 states. [2020-10-14 23:53:50,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:50,733 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2020-10-14 23:53:50,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 23:53:50,733 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 70 [2020-10-14 23:53:50,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:50,734 INFO L225 Difference]: With dead ends: 83 [2020-10-14 23:53:50,735 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 23:53:50,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:53:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 23:53:50,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-14 23:53:50,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 23:53:50,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2020-10-14 23:53:50,740 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 70 [2020-10-14 23:53:50,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:50,741 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2020-10-14 23:53:50,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 23:53:50,741 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2020-10-14 23:53:50,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 23:53:50,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:50,743 INFO L422 BasicCegarLoop]: trace histogram [31, 29, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:50,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 23:53:50,743 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:50,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:50,744 INFO L82 PathProgramCache]: Analyzing trace with hash -424084210, now seen corresponding path program 30 times [2020-10-14 23:53:50,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:50,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651664774] [2020-10-14 23:53:50,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:50,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:50,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:51,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:51,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 23:53:51,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-14 23:53:51,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:51,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 23:53:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 23:53:51,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:51,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:51,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:51,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:51,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:51,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:51,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:51,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:51,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:51,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:51,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:51,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:51,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 90 proven. 870 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:51,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651664774] [2020-10-14 23:53:51,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:51,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 23:53:51,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383181223] [2020-10-14 23:53:51,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 23:53:51,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:51,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 23:53:51,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:53:51,724 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 32 states. [2020-10-14 23:53:51,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:51,824 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2020-10-14 23:53:51,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 23:53:51,825 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 72 [2020-10-14 23:53:51,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:51,825 INFO L225 Difference]: With dead ends: 85 [2020-10-14 23:53:51,825 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 23:53:51,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:53:51,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 23:53:51,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-14 23:53:51,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 23:53:51,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2020-10-14 23:53:51,830 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 72 [2020-10-14 23:53:51,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:51,830 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2020-10-14 23:53:51,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 23:53:51,830 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2020-10-14 23:53:51,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 23:53:51,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:51,831 INFO L422 BasicCegarLoop]: trace histogram [32, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:51,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 23:53:51,831 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:51,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:51,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1973032267, now seen corresponding path program 31 times [2020-10-14 23:53:51,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:51,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866116670] [2020-10-14 23:53:51,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:51,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:51,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:52,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:52,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:53:52,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:52,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-10-14 23:53:52,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:52,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 23:53:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 23:53:52,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:53,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:53,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:53,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:53,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:53,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:53,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:53,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:53,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:53,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 93 proven. 930 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:53,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866116670] [2020-10-14 23:53:53,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:53,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 23:53:53,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940503369] [2020-10-14 23:53:53,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 23:53:53,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:53,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 23:53:53,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:53:53,040 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 33 states. [2020-10-14 23:53:53,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:53,134 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2020-10-14 23:53:53,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 23:53:53,134 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 74 [2020-10-14 23:53:53,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:53,135 INFO L225 Difference]: With dead ends: 87 [2020-10-14 23:53:53,135 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 23:53:53,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:53:53,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 23:53:53,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-14 23:53:53,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 23:53:53,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2020-10-14 23:53:53,139 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 74 [2020-10-14 23:53:53,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:53,140 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2020-10-14 23:53:53,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 23:53:53,140 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2020-10-14 23:53:53,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 23:53:53,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:53,141 INFO L422 BasicCegarLoop]: trace histogram [33, 31, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:53,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 23:53:53,141 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:53,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:53,141 INFO L82 PathProgramCache]: Analyzing trace with hash -795471288, now seen corresponding path program 32 times [2020-10-14 23:53:53,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:53,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081006234] [2020-10-14 23:53:53,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:53,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:53,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:53,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:53,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 23:53:53,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:53,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-14 23:53:53,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:53,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 23:53:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 23:53:53,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:54,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:54,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:54,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:54,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:54,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:54,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:54,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:54,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:54,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:54,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:54,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:54,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:54,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 96 proven. 992 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:54,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081006234] [2020-10-14 23:53:54,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:54,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 23:53:54,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689241093] [2020-10-14 23:53:54,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 23:53:54,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:54,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 23:53:54,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:53:54,200 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 34 states. [2020-10-14 23:53:54,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:54,314 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-10-14 23:53:54,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 23:53:54,314 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 76 [2020-10-14 23:53:54,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:54,315 INFO L225 Difference]: With dead ends: 89 [2020-10-14 23:53:54,315 INFO L226 Difference]: Without dead ends: 79 [2020-10-14 23:53:54,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:53:54,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-14 23:53:54,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-14 23:53:54,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 23:53:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2020-10-14 23:53:54,320 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 76 [2020-10-14 23:53:54,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:54,320 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2020-10-14 23:53:54,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 23:53:54,321 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2020-10-14 23:53:54,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 23:53:54,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:54,322 INFO L422 BasicCegarLoop]: trace histogram [34, 32, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:54,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 23:53:54,322 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:54,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:54,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1552335877, now seen corresponding path program 33 times [2020-10-14 23:53:54,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:54,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771058036] [2020-10-14 23:53:54,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:54,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:54,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:54,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:54,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 23:53:54,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:54,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-14 23:53:54,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:54,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:54,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 23:53:54,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 23:53:54,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:55,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:55,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:55,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:55,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:55,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:55,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:55,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:55,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 99 proven. 1056 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:55,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771058036] [2020-10-14 23:53:55,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:55,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 23:53:55,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790222858] [2020-10-14 23:53:55,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 23:53:55,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:55,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 23:53:55,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:53:55,501 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 35 states. [2020-10-14 23:53:55,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:55,637 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2020-10-14 23:53:55,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 23:53:55,637 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 78 [2020-10-14 23:53:55,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:55,639 INFO L225 Difference]: With dead ends: 91 [2020-10-14 23:53:55,639 INFO L226 Difference]: Without dead ends: 81 [2020-10-14 23:53:55,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:53:55,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-14 23:53:55,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-14 23:53:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 23:53:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-10-14 23:53:55,645 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 78 [2020-10-14 23:53:55,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:55,645 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-10-14 23:53:55,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 23:53:55,646 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-10-14 23:53:55,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 23:53:55,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:55,647 INFO L422 BasicCegarLoop]: trace histogram [35, 33, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:55,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 23:53:55,648 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:55,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:55,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1357776254, now seen corresponding path program 34 times [2020-10-14 23:53:55,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:55,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830724286] [2020-10-14 23:53:55,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:55,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:55,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:56,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:56,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 23:53:56,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:56,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-10-14 23:53:56,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:56,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:56,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 23:53:56,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:56,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 23:53:56,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:57,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:57,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:57,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:57,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:57,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:57,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:57,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:57,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:57,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:57,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:57,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:57,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 102 proven. 1122 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:57,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830724286] [2020-10-14 23:53:57,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:57,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 23:53:57,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698553941] [2020-10-14 23:53:57,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 23:53:57,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:57,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 23:53:57,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:53:57,101 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 36 states. [2020-10-14 23:53:57,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:57,271 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2020-10-14 23:53:57,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 23:53:57,271 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 80 [2020-10-14 23:53:57,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:57,272 INFO L225 Difference]: With dead ends: 93 [2020-10-14 23:53:57,272 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 23:53:57,273 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 [2020-10-14 23:53:57,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 23:53:57,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-14 23:53:57,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 23:53:57,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-10-14 23:53:57,278 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 80 [2020-10-14 23:53:57,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:57,279 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-10-14 23:53:57,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 23:53:57,279 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-10-14 23:53:57,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 23:53:57,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:57,280 INFO L422 BasicCegarLoop]: trace histogram [36, 34, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:57,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 23:53:57,280 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:57,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:57,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1951824449, now seen corresponding path program 35 times [2020-10-14 23:53:57,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:57,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619800479] [2020-10-14 23:53:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:57,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:57,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:57,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:57,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 23:53:57,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:57,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-14 23:53:57,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:57,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 23:53:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 23:53:57,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:53:58,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:58,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:58,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:58,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:58,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:58,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:58,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:58,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:58,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:58,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:58,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:58,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 105 proven. 1190 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:58,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619800479] [2020-10-14 23:53:58,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:58,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 23:53:58,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560276965] [2020-10-14 23:53:58,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 23:53:58,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:58,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 23:53:58,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:53:58,640 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 37 states. [2020-10-14 23:53:58,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:58,790 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-10-14 23:53:58,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 23:53:58,791 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 82 [2020-10-14 23:53:58,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:58,792 INFO L225 Difference]: With dead ends: 95 [2020-10-14 23:53:58,792 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 23:53:58,793 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 [2020-10-14 23:53:58,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 23:53:58,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-14 23:53:58,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 23:53:58,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2020-10-14 23:53:58,801 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 82 [2020-10-14 23:53:58,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:58,801 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2020-10-14 23:53:58,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 23:53:58,801 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2020-10-14 23:53:58,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 23:53:58,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:58,804 INFO L422 BasicCegarLoop]: trace histogram [37, 35, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:58,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 23:53:58,804 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:58,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:58,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1601489476, now seen corresponding path program 36 times [2020-10-14 23:53:58,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:58,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332999924] [2020-10-14 23:53:58,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:58,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:58,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:59,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:59,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 23:53:59,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:53:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-14 23:53:59,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:59,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:59,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 23:53:59,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:53:59,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 23:53:59,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:59,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:59,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:59,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:59,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:53:59,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:59,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:59,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:59,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:59,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:59,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:59,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:59,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 108 proven. 1260 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:53:59,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332999924] [2020-10-14 23:53:59,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:59,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 23:53:59,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216925451] [2020-10-14 23:53:59,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 23:53:59,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:59,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 23:53:59,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:53:59,889 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 38 states. [2020-10-14 23:54:00,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:00,036 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-14 23:54:00,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 23:54:00,038 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 84 [2020-10-14 23:54:00,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:00,039 INFO L225 Difference]: With dead ends: 97 [2020-10-14 23:54:00,039 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 23:54:00,040 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 [2020-10-14 23:54:00,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 23:54:00,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-14 23:54:00,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 23:54:00,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2020-10-14 23:54:00,044 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 84 [2020-10-14 23:54:00,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:00,044 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2020-10-14 23:54:00,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 23:54:00,044 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2020-10-14 23:54:00,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 23:54:00,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:00,045 INFO L422 BasicCegarLoop]: trace histogram [38, 36, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:00,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 23:54:00,046 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:00,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:00,046 INFO L82 PathProgramCache]: Analyzing trace with hash 62970489, now seen corresponding path program 37 times [2020-10-14 23:54:00,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:00,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973611443] [2020-10-14 23:54:00,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:00,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:00,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:00,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:00,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 23:54:00,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:54:00,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-10-14 23:54:00,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:00,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:00,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 23:54:00,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:54:00,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 23:54:00,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:01,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:01,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:01,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:01,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:01,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:01,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:54:01,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:01,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:01,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:01,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 111 proven. 1332 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:54:01,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973611443] [2020-10-14 23:54:01,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:01,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-14 23:54:01,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67763313] [2020-10-14 23:54:01,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-14 23:54:01,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:01,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-14 23:54:01,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:54:01,405 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 39 states. [2020-10-14 23:54:01,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:01,527 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2020-10-14 23:54:01,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 23:54:01,527 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 86 [2020-10-14 23:54:01,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:01,528 INFO L225 Difference]: With dead ends: 99 [2020-10-14 23:54:01,528 INFO L226 Difference]: Without dead ends: 89 [2020-10-14 23:54:01,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:54:01,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-14 23:54:01,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-10-14 23:54:01,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 23:54:01,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2020-10-14 23:54:01,536 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 86 [2020-10-14 23:54:01,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:01,539 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2020-10-14 23:54:01,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-14 23:54:01,539 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2020-10-14 23:54:01,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 23:54:01,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:01,540 INFO L422 BasicCegarLoop]: trace histogram [39, 37, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:01,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 23:54:01,540 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:01,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:01,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1881162742, now seen corresponding path program 38 times [2020-10-14 23:54:01,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:01,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115311379] [2020-10-14 23:54:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:01,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:01,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:01,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:01,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 23:54:01,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:54:01,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-14 23:54:01,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:01,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:01,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 23:54:01,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:54:01,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 23:54:01,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:02,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:02,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:02,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:02,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:02,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:02,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:02,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:02,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:02,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:02,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 114 proven. 1406 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:54:02,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115311379] [2020-10-14 23:54:02,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:02,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 23:54:02,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9037794] [2020-10-14 23:54:02,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 23:54:02,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:02,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 23:54:02,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 23:54:02,752 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 40 states. [2020-10-14 23:54:02,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:02,915 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-10-14 23:54:02,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 23:54:02,915 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 88 [2020-10-14 23:54:02,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:02,916 INFO L225 Difference]: With dead ends: 101 [2020-10-14 23:54:02,916 INFO L226 Difference]: Without dead ends: 91 [2020-10-14 23:54:02,917 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 [2020-10-14 23:54:02,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-14 23:54:02,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-14 23:54:02,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 23:54:02,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2020-10-14 23:54:02,921 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 88 [2020-10-14 23:54:02,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:02,922 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2020-10-14 23:54:02,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 23:54:02,922 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2020-10-14 23:54:02,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 23:54:02,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:02,923 INFO L422 BasicCegarLoop]: trace histogram [40, 38, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:02,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 23:54:02,923 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:02,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:02,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1112228403, now seen corresponding path program 39 times [2020-10-14 23:54:02,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:02,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022047842] [2020-10-14 23:54:02,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:02,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:03,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:03,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:03,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 23:54:03,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:54:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-14 23:54:03,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:03,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 23:54:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:54:03,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 23:54:03,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:04,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:04,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:04,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:04,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:04,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:04,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:54:04,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:04,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:04,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 117 proven. 1482 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:54:04,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022047842] [2020-10-14 23:54:04,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:04,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-14 23:54:04,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551008236] [2020-10-14 23:54:04,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-14 23:54:04,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:04,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-14 23:54:04,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:54:04,219 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 41 states. [2020-10-14 23:54:04,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:04,376 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2020-10-14 23:54:04,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 23:54:04,380 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 90 [2020-10-14 23:54:04,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:04,381 INFO L225 Difference]: With dead ends: 103 [2020-10-14 23:54:04,381 INFO L226 Difference]: Without dead ends: 93 [2020-10-14 23:54:04,382 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 [2020-10-14 23:54:04,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-14 23:54:04,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-14 23:54:04,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 23:54:04,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2020-10-14 23:54:04,387 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 90 [2020-10-14 23:54:04,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:04,388 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2020-10-14 23:54:04,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-14 23:54:04,388 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2020-10-14 23:54:04,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 23:54:04,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:04,389 INFO L422 BasicCegarLoop]: trace histogram [41, 39, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:04,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 23:54:04,389 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:04,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:04,389 INFO L82 PathProgramCache]: Analyzing trace with hash 900703536, now seen corresponding path program 40 times [2020-10-14 23:54:04,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:04,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837046457] [2020-10-14 23:54:04,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:04,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:04,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:04,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:04,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 23:54:04,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:54:04,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-14 23:54:04,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:04,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:04,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 23:54:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:54:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 23:54:04,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:05,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:05,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:05,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:05,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:05,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:05,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:05,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:05,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:05,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:05,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:05,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:05,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 120 proven. 1560 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:54:05,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837046457] [2020-10-14 23:54:05,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:05,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-14 23:54:05,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174258514] [2020-10-14 23:54:05,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-14 23:54:05,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:05,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-14 23:54:05,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:54:05,698 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 42 states. [2020-10-14 23:54:05,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:05,824 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2020-10-14 23:54:05,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 23:54:05,826 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 92 [2020-10-14 23:54:05,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:05,826 INFO L225 Difference]: With dead ends: 105 [2020-10-14 23:54:05,826 INFO L226 Difference]: Without dead ends: 95 [2020-10-14 23:54:05,827 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 [2020-10-14 23:54:05,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-14 23:54:05,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-14 23:54:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 23:54:05,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2020-10-14 23:54:05,831 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 92 [2020-10-14 23:54:05,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:05,831 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2020-10-14 23:54:05,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-14 23:54:05,832 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2020-10-14 23:54:05,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 23:54:05,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:05,832 INFO L422 BasicCegarLoop]: trace histogram [42, 40, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:05,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 23:54:05,833 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:05,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:05,833 INFO L82 PathProgramCache]: Analyzing trace with hash -511230739, now seen corresponding path program 41 times [2020-10-14 23:54:05,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:05,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563448727] [2020-10-14 23:54:05,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:05,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:05,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:06,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:06,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:54:06,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:54:06,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-14 23:54:06,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:06,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:06,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-14 23:54:06,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:54:06,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 23:54:06,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:07,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:07,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:07,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:07,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:07,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:07,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:07,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:07,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:07,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:07,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:07,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 123 proven. 1640 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:54:07,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563448727] [2020-10-14 23:54:07,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:07,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-14 23:54:07,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302239112] [2020-10-14 23:54:07,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-14 23:54:07,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:07,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-14 23:54:07,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:54:07,185 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 43 states. [2020-10-14 23:54:07,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:07,343 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-14 23:54:07,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 23:54:07,345 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 94 [2020-10-14 23:54:07,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:07,346 INFO L225 Difference]: With dead ends: 107 [2020-10-14 23:54:07,346 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 23:54:07,347 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 [2020-10-14 23:54:07,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 23:54:07,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-14 23:54:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 23:54:07,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2020-10-14 23:54:07,352 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 94 [2020-10-14 23:54:07,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:07,352 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2020-10-14 23:54:07,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-14 23:54:07,352 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2020-10-14 23:54:07,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 23:54:07,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:07,354 INFO L422 BasicCegarLoop]: trace histogram [43, 41, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:07,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 23:54:07,355 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:07,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:07,355 INFO L82 PathProgramCache]: Analyzing trace with hash -170403478, now seen corresponding path program 42 times [2020-10-14 23:54:07,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:07,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015528350] [2020-10-14 23:54:07,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:07,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:07,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:07,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:07,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 23:54:07,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:54:07,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-10-14 23:54:07,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:07,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 23:54:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:54:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 23:54:07,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:08,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:08,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:08,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:08,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:08,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:08,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:08,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:08,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:08,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:08,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:08,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:08,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 126 proven. 1722 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:54:08,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015528350] [2020-10-14 23:54:08,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:08,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-14 23:54:08,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034570001] [2020-10-14 23:54:08,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-14 23:54:08,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:08,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-14 23:54:08,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 23:54:08,793 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand 44 states. [2020-10-14 23:54:08,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:08,930 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2020-10-14 23:54:08,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 23:54:08,931 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 96 [2020-10-14 23:54:08,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:08,932 INFO L225 Difference]: With dead ends: 109 [2020-10-14 23:54:08,933 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 23:54:08,934 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 [2020-10-14 23:54:08,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 23:54:08,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-14 23:54:08,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 23:54:08,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2020-10-14 23:54:08,938 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 96 [2020-10-14 23:54:08,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:08,939 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2020-10-14 23:54:08,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-14 23:54:08,939 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2020-10-14 23:54:08,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 23:54:08,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:08,940 INFO L422 BasicCegarLoop]: trace histogram [44, 42, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:08,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 23:54:08,940 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:08,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:08,941 INFO L82 PathProgramCache]: Analyzing trace with hash 947079847, now seen corresponding path program 43 times [2020-10-14 23:54:08,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:08,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676348282] [2020-10-14 23:54:08,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:08,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:09,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:09,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:09,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 23:54:09,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:54:09,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-10-14 23:54:09,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:09,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-14 23:54:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:54:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 23:54:09,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:10,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:10,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:10,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:10,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:10,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:10,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:10,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:10,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:10,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:10,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:10,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:10,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 129 proven. 1806 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:54:10,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676348282] [2020-10-14 23:54:10,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:10,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-14 23:54:10,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660177579] [2020-10-14 23:54:10,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-14 23:54:10,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:10,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-14 23:54:10,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 23:54:10,411 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 45 states. [2020-10-14 23:54:10,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:10,585 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-14 23:54:10,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 23:54:10,585 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 98 [2020-10-14 23:54:10,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:10,586 INFO L225 Difference]: With dead ends: 111 [2020-10-14 23:54:10,586 INFO L226 Difference]: Without dead ends: 101 [2020-10-14 23:54:10,587 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 [2020-10-14 23:54:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-14 23:54:10,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-10-14 23:54:10,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 23:54:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2020-10-14 23:54:10,590 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 98 [2020-10-14 23:54:10,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:10,591 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2020-10-14 23:54:10,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-14 23:54:10,591 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2020-10-14 23:54:10,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 23:54:10,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:10,591 INFO L422 BasicCegarLoop]: trace histogram [45, 43, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:10,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 23:54:10,592 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:10,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:10,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1106731172, now seen corresponding path program 44 times [2020-10-14 23:54:10,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:10,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592188119] [2020-10-14 23:54:10,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:10,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:10,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:11,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:11,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 23:54:11,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:54:11,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-14 23:54:11,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:11,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-14 23:54:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:54:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 23:54:11,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:12,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:12,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:12,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:12,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:12,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:12,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:12,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 132 proven. 1892 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:54:12,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592188119] [2020-10-14 23:54:12,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:12,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-14 23:54:12,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324640890] [2020-10-14 23:54:12,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-14 23:54:12,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:12,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-14 23:54:12,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 23:54:12,135 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 46 states. [2020-10-14 23:54:12,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:12,309 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2020-10-14 23:54:12,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-14 23:54:12,310 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 100 [2020-10-14 23:54:12,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:12,311 INFO L225 Difference]: With dead ends: 113 [2020-10-14 23:54:12,311 INFO L226 Difference]: Without dead ends: 103 [2020-10-14 23:54:12,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 23:54:12,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-14 23:54:12,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-14 23:54:12,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 23:54:12,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2020-10-14 23:54:12,316 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 100 [2020-10-14 23:54:12,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:12,316 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2020-10-14 23:54:12,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-14 23:54:12,316 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2020-10-14 23:54:12,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 23:54:12,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:12,317 INFO L422 BasicCegarLoop]: trace histogram [46, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:12,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 23:54:12,318 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:12,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:12,318 INFO L82 PathProgramCache]: Analyzing trace with hash -87168159, now seen corresponding path program 45 times [2020-10-14 23:54:12,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:12,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226525003] [2020-10-14 23:54:12,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:12,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:12,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:12,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:12,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 23:54:12,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:54:12,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-14 23:54:12,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:12,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:12,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-14 23:54:12,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:54:12,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 23:54:12,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:13,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:13,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:13,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:13,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:13,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:13,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:13,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:13,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:13,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:13,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:13,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:13,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 135 proven. 1980 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:54:13,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226525003] [2020-10-14 23:54:13,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:13,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-14 23:54:13,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665291730] [2020-10-14 23:54:13,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-14 23:54:13,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:13,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-14 23:54:13,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 23:54:13,947 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 47 states. [2020-10-14 23:54:14,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:14,110 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-10-14 23:54:14,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 23:54:14,111 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 102 [2020-10-14 23:54:14,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:14,112 INFO L225 Difference]: With dead ends: 115 [2020-10-14 23:54:14,112 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 23:54:14,112 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 [2020-10-14 23:54:14,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 23:54:14,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-10-14 23:54:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 23:54:14,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2020-10-14 23:54:14,117 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 102 [2020-10-14 23:54:14,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:14,117 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2020-10-14 23:54:14,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-14 23:54:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2020-10-14 23:54:14,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 23:54:14,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:14,118 INFO L422 BasicCegarLoop]: trace histogram [47, 45, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:14,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 23:54:14,119 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:14,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:14,119 INFO L82 PathProgramCache]: Analyzing trace with hash -668157218, now seen corresponding path program 46 times [2020-10-14 23:54:14,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:14,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980319834] [2020-10-14 23:54:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:14,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:14,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:14,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:14,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 23:54:14,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:54:14,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-14 23:54:14,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:14,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-14 23:54:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:54:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 23:54:14,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:15,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:15,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:15,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:15,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:15,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:15,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:15,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:15,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:15,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:15,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 138 proven. 2070 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:54:15,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980319834] [2020-10-14 23:54:15,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:15,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-14 23:54:15,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923553225] [2020-10-14 23:54:15,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-14 23:54:15,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:15,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-14 23:54:15,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 23:54:15,790 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 48 states. [2020-10-14 23:54:15,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:15,947 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2020-10-14 23:54:15,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-14 23:54:15,948 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 104 [2020-10-14 23:54:15,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:15,949 INFO L225 Difference]: With dead ends: 117 [2020-10-14 23:54:15,949 INFO L226 Difference]: Without dead ends: 107 [2020-10-14 23:54:15,949 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 [2020-10-14 23:54:15,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-14 23:54:15,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-14 23:54:15,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 23:54:15,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2020-10-14 23:54:15,955 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 104 [2020-10-14 23:54:15,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:15,955 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2020-10-14 23:54:15,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-14 23:54:15,956 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2020-10-14 23:54:15,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 23:54:15,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:15,956 INFO L422 BasicCegarLoop]: trace histogram [48, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:15,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 23:54:15,957 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:15,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:15,957 INFO L82 PathProgramCache]: Analyzing trace with hash -652894437, now seen corresponding path program 47 times [2020-10-14 23:54:15,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:15,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392708627] [2020-10-14 23:54:15,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:15,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:16,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:16,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:16,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 23:54:16,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:54:16,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-14 23:54:16,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:16,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-14 23:54:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:54:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 23:54:16,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:17,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:17,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:17,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:17,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:17,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:17,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:17,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:17,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:17,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:17,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:17,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:17,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 141 proven. 2162 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:54:17,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392708627] [2020-10-14 23:54:17,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:17,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-14 23:54:17,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259204388] [2020-10-14 23:54:17,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-14 23:54:17,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:17,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-14 23:54:17,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 23:54:17,750 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 49 states. [2020-10-14 23:54:17,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:17,923 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-10-14 23:54:17,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-14 23:54:17,923 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 106 [2020-10-14 23:54:17,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:17,924 INFO L225 Difference]: With dead ends: 119 [2020-10-14 23:54:17,925 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 23:54:17,925 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 [2020-10-14 23:54:17,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 23:54:17,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-14 23:54:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 23:54:17,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2020-10-14 23:54:17,930 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 106 [2020-10-14 23:54:17,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:17,930 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2020-10-14 23:54:17,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-14 23:54:17,931 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2020-10-14 23:54:17,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 23:54:17,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:17,932 INFO L422 BasicCegarLoop]: trace histogram [49, 47, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:17,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 23:54:17,932 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:17,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:17,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1129736216, now seen corresponding path program 48 times [2020-10-14 23:54:17,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:17,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776476461] [2020-10-14 23:54:17,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:17,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:17,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:18,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:18,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 23:54:18,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:54:18,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-14 23:54:18,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:18,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-14 23:54:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:54:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 23:54:18,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:19,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:19,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:19,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:19,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:19,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:19,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:19,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:19,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:19,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:19,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:19,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:19,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 144 proven. 2256 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:54:19,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776476461] [2020-10-14 23:54:19,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:19,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-14 23:54:19,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437935228] [2020-10-14 23:54:19,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-14 23:54:19,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:19,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-14 23:54:19,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 23:54:19,745 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 50 states. [2020-10-14 23:54:19,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:19,937 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-10-14 23:54:19,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-14 23:54:19,938 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 108 [2020-10-14 23:54:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:19,939 INFO L225 Difference]: With dead ends: 121 [2020-10-14 23:54:19,939 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 23:54:19,939 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 [2020-10-14 23:54:19,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 23:54:19,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-10-14 23:54:19,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 23:54:19,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2020-10-14 23:54:19,944 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 108 [2020-10-14 23:54:19,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:19,944 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2020-10-14 23:54:19,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-14 23:54:19,944 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2020-10-14 23:54:19,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 23:54:19,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:19,945 INFO L422 BasicCegarLoop]: trace histogram [50, 48, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:19,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 23:54:19,946 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:19,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:19,946 INFO L82 PathProgramCache]: Analyzing trace with hash 545842645, now seen corresponding path program 49 times [2020-10-14 23:54:19,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:19,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588584330] [2020-10-14 23:54:19,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:19,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:20,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:20,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:20,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 23:54:20,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:54:20,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-14 23:54:20,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:20,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-14 23:54:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:54:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 23:54:20,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:21,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:21,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:21,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:21,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:21,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:21,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:21,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:21,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:21,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:21,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:21,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 147 proven. 2352 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:54:21,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588584330] [2020-10-14 23:54:21,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:21,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-14 23:54:21,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955075898] [2020-10-14 23:54:21,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-14 23:54:21,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:21,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-14 23:54:21,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 23:54:21,837 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 51 states. [2020-10-14 23:54:22,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:22,005 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2020-10-14 23:54:22,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-14 23:54:22,008 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 110 [2020-10-14 23:54:22,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:22,009 INFO L225 Difference]: With dead ends: 123 [2020-10-14 23:54:22,009 INFO L226 Difference]: Without dead ends: 113 [2020-10-14 23:54:22,010 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 [2020-10-14 23:54:22,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-14 23:54:22,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-14 23:54:22,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 23:54:22,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2020-10-14 23:54:22,014 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 110 [2020-10-14 23:54:22,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:22,014 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2020-10-14 23:54:22,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-14 23:54:22,015 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2020-10-14 23:54:22,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 23:54:22,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:22,015 INFO L422 BasicCegarLoop]: trace histogram [51, 49, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:22,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 23:54:22,016 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:22,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:22,016 INFO L82 PathProgramCache]: Analyzing trace with hash 2064836690, now seen corresponding path program 50 times [2020-10-14 23:54:22,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:22,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210717795] [2020-10-14 23:54:22,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:22,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:22,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:22,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:22,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 23:54:22,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:54:22,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-14 23:54:22,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:22,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:22,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-14 23:54:22,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:54:22,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 23:54:22,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:24,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:24,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:24,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:24,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:24,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:24,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:24,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:24,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:24,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 150 proven. 2450 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:54:24,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210717795] [2020-10-14 23:54:24,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:24,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-14 23:54:24,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543473981] [2020-10-14 23:54:24,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-14 23:54:24,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:24,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-14 23:54:24,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 23:54:24,045 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 52 states. [2020-10-14 23:54:24,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:24,220 INFO L93 Difference]: Finished difference Result 125 states and 130 transitions. [2020-10-14 23:54:24,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-14 23:54:24,220 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 112 [2020-10-14 23:54:24,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:24,222 INFO L225 Difference]: With dead ends: 125 [2020-10-14 23:54:24,222 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 23:54:24,223 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 [2020-10-14 23:54:24,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 23:54:24,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-14 23:54:24,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 23:54:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2020-10-14 23:54:24,228 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 112 [2020-10-14 23:54:24,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:24,228 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2020-10-14 23:54:24,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-14 23:54:24,228 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2020-10-14 23:54:24,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 23:54:24,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:24,229 INFO L422 BasicCegarLoop]: trace histogram [52, 50, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:24,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 23:54:24,229 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:24,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:24,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1529233295, now seen corresponding path program 51 times [2020-10-14 23:54:24,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:24,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682116753] [2020-10-14 23:54:24,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:24,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:24,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:24,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 23:54:24,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:24,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 23:54:24,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:24,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:24,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:54:24,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:24,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:54:24,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:24,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:24,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:24,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:24,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:24,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:24,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:24,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:24,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:24,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:24,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:24,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:24,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 250 proven. 4 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:24,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682116753] [2020-10-14 23:54:24,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:24,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 23:54:24,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576691505] [2020-10-14 23:54:24,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:54:24,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:24,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:54:24,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:54:24,329 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 5 states. [2020-10-14 23:54:24,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:24,362 INFO L93 Difference]: Finished difference Result 123 states and 127 transitions. [2020-10-14 23:54:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:54:24,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-14 23:54:24,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:24,366 INFO L225 Difference]: With dead ends: 123 [2020-10-14 23:54:24,366 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 23:54:24,366 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 [2020-10-14 23:54:24,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 23:54:24,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-14 23:54:24,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 23:54:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2020-10-14 23:54:24,371 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 114 [2020-10-14 23:54:24,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:24,371 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2020-10-14 23:54:24,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:54:24,371 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2020-10-14 23:54:24,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 23:54:24,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:24,372 INFO L422 BasicCegarLoop]: trace histogram [53, 50, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:24,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 23:54:24,373 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:24,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:24,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1817419210, now seen corresponding path program 52 times [2020-10-14 23:54:24,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:24,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026061008] [2020-10-14 23:54:24,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:24,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:24,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:24,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 23:54:24,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:24,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 23:54:24,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:24,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:54:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:54:24,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:24,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:24,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:24,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:24,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:24,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:24,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:24,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:24,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:24,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 350 proven. 9 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:24,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026061008] [2020-10-14 23:54:24,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:24,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:54:24,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066836336] [2020-10-14 23:54:24,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:54:24,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:24,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:54:24,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:54:24,548 INFO L87 Difference]: Start difference. First operand 117 states and 120 transitions. Second operand 6 states. [2020-10-14 23:54:24,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:24,574 INFO L93 Difference]: Finished difference Result 125 states and 130 transitions. [2020-10-14 23:54:24,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:54:24,575 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-14 23:54:24,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:24,576 INFO L225 Difference]: With dead ends: 125 [2020-10-14 23:54:24,576 INFO L226 Difference]: Without dead ends: 120 [2020-10-14 23:54:24,576 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 [2020-10-14 23:54:24,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-14 23:54:24,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-10-14 23:54:24,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-14 23:54:24,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2020-10-14 23:54:24,581 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 116 [2020-10-14 23:54:24,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:24,582 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2020-10-14 23:54:24,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:54:24,582 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2020-10-14 23:54:24,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 23:54:24,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:24,583 INFO L422 BasicCegarLoop]: trace histogram [54, 50, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:24,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 23:54:24,583 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:24,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:24,583 INFO L82 PathProgramCache]: Analyzing trace with hash -408790715, now seen corresponding path program 53 times [2020-10-14 23:54:24,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:24,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717395449] [2020-10-14 23:54:24,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:24,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:24,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:24,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 23:54:24,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:24,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 23:54:24,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:24,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:24,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:54:24,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:24,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:54:24,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:24,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:24,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:24,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:24,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:24,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:24,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:24,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:24,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:24,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:24,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 450 proven. 16 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:24,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717395449] [2020-10-14 23:54:24,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:24,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:54:24,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324526387] [2020-10-14 23:54:24,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:54:24,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:24,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:54:24,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:54:24,729 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand 7 states. [2020-10-14 23:54:24,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:24,756 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2020-10-14 23:54:24,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:54:24,757 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-14 23:54:24,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:24,759 INFO L225 Difference]: With dead ends: 127 [2020-10-14 23:54:24,759 INFO L226 Difference]: Without dead ends: 122 [2020-10-14 23:54:24,759 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 [2020-10-14 23:54:24,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-14 23:54:24,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-14 23:54:24,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 23:54:24,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2020-10-14 23:54:24,764 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 118 [2020-10-14 23:54:24,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:24,765 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2020-10-14 23:54:24,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:54:24,765 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2020-10-14 23:54:24,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 23:54:24,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:24,766 INFO L422 BasicCegarLoop]: trace histogram [55, 50, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:24,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 23:54:24,766 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:24,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:24,767 INFO L82 PathProgramCache]: Analyzing trace with hash -902815232, now seen corresponding path program 54 times [2020-10-14 23:54:24,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:24,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564038227] [2020-10-14 23:54:24,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:24,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:24,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:24,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 23:54:24,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:24,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 23:54:24,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:24,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:24,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:54:24,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:24,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:54:24,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:25,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:25,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:25,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:25,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:25,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:25,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:25,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:25,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:25,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:54:25,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 550 proven. 25 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:25,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564038227] [2020-10-14 23:54:25,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:25,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:54:25,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850122618] [2020-10-14 23:54:25,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:54:25,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:25,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:54:25,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:54:25,052 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand 8 states. [2020-10-14 23:54:25,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:25,083 INFO L93 Difference]: Finished difference Result 129 states and 136 transitions. [2020-10-14 23:54:25,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:54:25,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-10-14 23:54:25,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:25,084 INFO L225 Difference]: With dead ends: 129 [2020-10-14 23:54:25,084 INFO L226 Difference]: Without dead ends: 124 [2020-10-14 23:54:25,085 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 [2020-10-14 23:54:25,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-14 23:54:25,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2020-10-14 23:54:25,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-14 23:54:25,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 129 transitions. [2020-10-14 23:54:25,089 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 129 transitions. Word has length 120 [2020-10-14 23:54:25,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:25,090 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 129 transitions. [2020-10-14 23:54:25,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:54:25,090 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 129 transitions. [2020-10-14 23:54:25,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 23:54:25,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:25,091 INFO L422 BasicCegarLoop]: trace histogram [56, 50, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:25,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 23:54:25,091 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:25,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:25,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1080993787, now seen corresponding path program 55 times [2020-10-14 23:54:25,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:25,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481786563] [2020-10-14 23:54:25,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:25,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:25,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:25,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 23:54:25,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:25,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 23:54:25,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:25,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:25,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:54:25,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:25,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:54:25,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:25,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:25,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:25,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:25,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:25,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:25,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:25,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:25,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:25,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 650 proven. 36 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:25,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481786563] [2020-10-14 23:54:25,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:25,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:54:25,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591172236] [2020-10-14 23:54:25,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:54:25,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:25,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:54:25,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:54:25,293 INFO L87 Difference]: Start difference. First operand 123 states and 129 transitions. Second operand 9 states. [2020-10-14 23:54:25,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:25,330 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2020-10-14 23:54:25,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:54:25,331 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 122 [2020-10-14 23:54:25,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:25,332 INFO L225 Difference]: With dead ends: 131 [2020-10-14 23:54:25,333 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 23:54:25,333 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 [2020-10-14 23:54:25,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 23:54:25,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-10-14 23:54:25,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-14 23:54:25,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2020-10-14 23:54:25,338 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 122 [2020-10-14 23:54:25,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:25,338 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 132 transitions. [2020-10-14 23:54:25,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:54:25,339 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 132 transitions. [2020-10-14 23:54:25,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 23:54:25,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:25,340 INFO L422 BasicCegarLoop]: trace histogram [57, 50, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:25,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 23:54:25,340 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:25,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:25,340 INFO L82 PathProgramCache]: Analyzing trace with hash 555981622, now seen corresponding path program 56 times [2020-10-14 23:54:25,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:25,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435134311] [2020-10-14 23:54:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:25,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:25,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:25,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 23:54:25,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:25,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 23:54:25,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:25,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:25,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:54:25,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:25,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:54:25,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:25,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:25,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:25,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:25,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:25,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:25,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:25,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:25,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:25,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:25,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:25,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:25,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:25,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 750 proven. 49 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:25,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435134311] [2020-10-14 23:54:25,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:25,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:54:25,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261948069] [2020-10-14 23:54:25,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:54:25,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:25,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:54:25,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:54:25,581 INFO L87 Difference]: Start difference. First operand 125 states and 132 transitions. Second operand 10 states. [2020-10-14 23:54:25,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:25,621 INFO L93 Difference]: Finished difference Result 133 states and 142 transitions. [2020-10-14 23:54:25,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:54:25,622 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-10-14 23:54:25,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:25,623 INFO L225 Difference]: With dead ends: 133 [2020-10-14 23:54:25,623 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 23:54:25,623 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 [2020-10-14 23:54:25,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 23:54:25,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2020-10-14 23:54:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-14 23:54:25,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 135 transitions. [2020-10-14 23:54:25,629 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 135 transitions. Word has length 124 [2020-10-14 23:54:25,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:25,629 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 135 transitions. [2020-10-14 23:54:25,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:54:25,629 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 135 transitions. [2020-10-14 23:54:25,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 23:54:25,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:25,630 INFO L422 BasicCegarLoop]: trace histogram [58, 50, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:25,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 23:54:25,631 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:25,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:25,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1469535311, now seen corresponding path program 57 times [2020-10-14 23:54:25,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:25,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993598407] [2020-10-14 23:54:25,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:25,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:25,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 23:54:25,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:25,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 23:54:25,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:25,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:25,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:54:25,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:25,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:54:25,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:25,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:25,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:25,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:25,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:25,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:25,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:25,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:25,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:25,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:25,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 850 proven. 64 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:25,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993598407] [2020-10-14 23:54:25,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:25,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:54:25,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092735454] [2020-10-14 23:54:25,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:54:25,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:25,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:54:25,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:54:25,930 INFO L87 Difference]: Start difference. First operand 127 states and 135 transitions. Second operand 11 states. [2020-10-14 23:54:25,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:25,979 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2020-10-14 23:54:25,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:54:25,980 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 126 [2020-10-14 23:54:25,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:25,981 INFO L225 Difference]: With dead ends: 135 [2020-10-14 23:54:25,981 INFO L226 Difference]: Without dead ends: 130 [2020-10-14 23:54:25,982 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 [2020-10-14 23:54:25,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-14 23:54:25,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2020-10-14 23:54:25,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 23:54:25,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 138 transitions. [2020-10-14 23:54:25,987 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 138 transitions. Word has length 126 [2020-10-14 23:54:25,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:25,988 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 138 transitions. [2020-10-14 23:54:25,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:54:25,988 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 138 transitions. [2020-10-14 23:54:25,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 23:54:25,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:25,989 INFO L422 BasicCegarLoop]: trace histogram [59, 50, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:25,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 23:54:25,989 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:25,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:25,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1923844460, now seen corresponding path program 58 times [2020-10-14 23:54:25,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:25,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219289346] [2020-10-14 23:54:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:26,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:26,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:26,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 23:54:26,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:26,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 23:54:26,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:26,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:26,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:54:26,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:54:26,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:26,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:26,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:26,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:26,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:26,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:26,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:26,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:26,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:26,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:54:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 950 proven. 81 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:26,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219289346] [2020-10-14 23:54:26,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:26,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:54:26,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558038602] [2020-10-14 23:54:26,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:54:26,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:26,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:54:26,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:54:26,285 INFO L87 Difference]: Start difference. First operand 129 states and 138 transitions. Second operand 12 states. [2020-10-14 23:54:26,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:26,335 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions. [2020-10-14 23:54:26,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:54:26,336 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-10-14 23:54:26,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:26,337 INFO L225 Difference]: With dead ends: 137 [2020-10-14 23:54:26,337 INFO L226 Difference]: Without dead ends: 132 [2020-10-14 23:54:26,337 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 [2020-10-14 23:54:26,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-14 23:54:26,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-10-14 23:54:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-14 23:54:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 141 transitions. [2020-10-14 23:54:26,342 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 141 transitions. Word has length 128 [2020-10-14 23:54:26,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:26,342 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 141 transitions. [2020-10-14 23:54:26,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:54:26,343 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 141 transitions. [2020-10-14 23:54:26,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 23:54:26,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:26,344 INFO L422 BasicCegarLoop]: trace histogram [60, 50, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:26,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 23:54:26,344 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:26,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:26,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1213340569, now seen corresponding path program 59 times [2020-10-14 23:54:26,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:26,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257059773] [2020-10-14 23:54:26,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:26,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:26,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:26,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 23:54:26,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:26,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 23:54:26,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:26,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:54:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:26,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:54:26,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:26,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:26,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:26,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:26,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:26,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:26,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:26,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:26,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:26,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 1050 proven. 100 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:26,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257059773] [2020-10-14 23:54:26,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:26,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:54:26,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220863390] [2020-10-14 23:54:26,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:54:26,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:26,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:54:26,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:54:26,648 INFO L87 Difference]: Start difference. First operand 131 states and 141 transitions. Second operand 13 states. [2020-10-14 23:54:26,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:26,711 INFO L93 Difference]: Finished difference Result 139 states and 151 transitions. [2020-10-14 23:54:26,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:54:26,712 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-10-14 23:54:26,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:26,713 INFO L225 Difference]: With dead ends: 139 [2020-10-14 23:54:26,713 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 23:54:26,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:54:26,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 23:54:26,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2020-10-14 23:54:26,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 23:54:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2020-10-14 23:54:26,718 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 130 [2020-10-14 23:54:26,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:26,718 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2020-10-14 23:54:26,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:54:26,718 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2020-10-14 23:54:26,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 23:54:26,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:26,719 INFO L422 BasicCegarLoop]: trace histogram [61, 50, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:26,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 23:54:26,720 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:26,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:26,720 INFO L82 PathProgramCache]: Analyzing trace with hash -981111646, now seen corresponding path program 60 times [2020-10-14 23:54:26,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:26,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164645411] [2020-10-14 23:54:26,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:26,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:27,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:27,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 23:54:27,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:27,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-14 23:54:27,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:27,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:54:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:54:27,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:27,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:27,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:27,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:27,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:27,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:27,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:27,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:27,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:27,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:27,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:27,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:27,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 1150 proven. 121 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:27,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164645411] [2020-10-14 23:54:27,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:27,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:54:27,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668415739] [2020-10-14 23:54:27,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:54:27,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:27,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:54:27,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:54:27,313 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand 14 states. [2020-10-14 23:54:27,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:27,371 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2020-10-14 23:54:27,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:54:27,372 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-14 23:54:27,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:27,373 INFO L225 Difference]: With dead ends: 141 [2020-10-14 23:54:27,373 INFO L226 Difference]: Without dead ends: 136 [2020-10-14 23:54:27,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:54:27,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-14 23:54:27,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2020-10-14 23:54:27,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-14 23:54:27,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 147 transitions. [2020-10-14 23:54:27,378 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 147 transitions. Word has length 132 [2020-10-14 23:54:27,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:27,378 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 147 transitions. [2020-10-14 23:54:27,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:54:27,379 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 147 transitions. [2020-10-14 23:54:27,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 23:54:27,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:27,380 INFO L422 BasicCegarLoop]: trace histogram [62, 50, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:27,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 23:54:27,380 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:27,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:27,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1147416035, now seen corresponding path program 61 times [2020-10-14 23:54:27,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:27,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413797368] [2020-10-14 23:54:27,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:27,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:27,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:27,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 23:54:27,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:27,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 23:54:27,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:27,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:54:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:54:27,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:27,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:27,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:27,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:27,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:27,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:27,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:27,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:27,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:27,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:27,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 1250 proven. 144 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:27,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413797368] [2020-10-14 23:54:27,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:27,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:54:27,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885957916] [2020-10-14 23:54:27,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:54:27,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:27,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:54:27,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:54:27,756 INFO L87 Difference]: Start difference. First operand 135 states and 147 transitions. Second operand 15 states. [2020-10-14 23:54:27,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:27,825 INFO L93 Difference]: Finished difference Result 143 states and 157 transitions. [2020-10-14 23:54:27,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:54:27,826 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 134 [2020-10-14 23:54:27,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:27,828 INFO L225 Difference]: With dead ends: 143 [2020-10-14 23:54:27,828 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 23:54:27,828 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 [2020-10-14 23:54:27,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 23:54:27,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2020-10-14 23:54:27,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-14 23:54:27,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 150 transitions. [2020-10-14 23:54:27,833 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 150 transitions. Word has length 134 [2020-10-14 23:54:27,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:27,833 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 150 transitions. [2020-10-14 23:54:27,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:54:27,834 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 150 transitions. [2020-10-14 23:54:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 23:54:27,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:27,835 INFO L422 BasicCegarLoop]: trace histogram [63, 50, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:27,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 23:54:27,835 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:27,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:27,835 INFO L82 PathProgramCache]: Analyzing trace with hash -2052143912, now seen corresponding path program 62 times [2020-10-14 23:54:27,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:27,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817457463] [2020-10-14 23:54:27,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:27,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:28,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:28,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 23:54:28,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:28,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-14 23:54:28,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:28,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:54:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:54:28,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:28,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:28,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:28,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:28,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:28,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:28,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:28,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:28,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:28,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:28,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:28,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 1350 proven. 169 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:28,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817457463] [2020-10-14 23:54:28,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:28,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:54:28,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019208091] [2020-10-14 23:54:28,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:54:28,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:28,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:54:28,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:54:28,254 INFO L87 Difference]: Start difference. First operand 137 states and 150 transitions. Second operand 16 states. [2020-10-14 23:54:28,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:28,326 INFO L93 Difference]: Finished difference Result 145 states and 160 transitions. [2020-10-14 23:54:28,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:54:28,326 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 136 [2020-10-14 23:54:28,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:28,327 INFO L225 Difference]: With dead ends: 145 [2020-10-14 23:54:28,327 INFO L226 Difference]: Without dead ends: 140 [2020-10-14 23:54:28,328 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 [2020-10-14 23:54:28,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-14 23:54:28,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2020-10-14 23:54:28,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 23:54:28,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2020-10-14 23:54:28,333 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 136 [2020-10-14 23:54:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:28,333 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2020-10-14 23:54:28,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:54:28,333 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2020-10-14 23:54:28,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 23:54:28,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:28,334 INFO L422 BasicCegarLoop]: trace histogram [64, 50, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:28,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 23:54:28,335 INFO L427 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:28,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:28,335 INFO L82 PathProgramCache]: Analyzing trace with hash 382727379, now seen corresponding path program 63 times [2020-10-14 23:54:28,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:28,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397676726] [2020-10-14 23:54:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:28,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:28,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:28,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 23:54:28,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:28,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-14 23:54:28,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:28,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:28,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:54:28,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:28,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:54:28,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:28,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:28,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:28,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:28,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:28,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:28,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:54:28,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:28,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:28,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:28,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:28,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:28,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 1450 proven. 196 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:28,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397676726] [2020-10-14 23:54:28,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:28,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:54:28,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168814195] [2020-10-14 23:54:28,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:54:28,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:28,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:54:28,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:54:28,775 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand 17 states. [2020-10-14 23:54:28,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:28,848 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2020-10-14 23:54:28,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:54:28,849 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 138 [2020-10-14 23:54:28,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:28,850 INFO L225 Difference]: With dead ends: 147 [2020-10-14 23:54:28,850 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 23:54:28,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:54:28,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 23:54:28,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2020-10-14 23:54:28,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 23:54:28,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 156 transitions. [2020-10-14 23:54:28,856 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 156 transitions. Word has length 138 [2020-10-14 23:54:28,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:28,856 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 156 transitions. [2020-10-14 23:54:28,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:54:28,857 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 156 transitions. [2020-10-14 23:54:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 23:54:28,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:28,858 INFO L422 BasicCegarLoop]: trace histogram [65, 50, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:28,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 23:54:28,858 INFO L427 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:28,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:28,858 INFO L82 PathProgramCache]: Analyzing trace with hash -463138290, now seen corresponding path program 64 times [2020-10-14 23:54:28,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:28,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811465123] [2020-10-14 23:54:28,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:28,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:29,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:29,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 23:54:29,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:29,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-14 23:54:29,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:29,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:29,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:54:29,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:29,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:54:29,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:29,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:29,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:29,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:29,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:29,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:29,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:29,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:29,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:29,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:29,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:29,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:29,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 1550 proven. 225 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:29,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811465123] [2020-10-14 23:54:29,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:29,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:54:29,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928109495] [2020-10-14 23:54:29,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:54:29,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:29,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:54:29,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:54:29,390 INFO L87 Difference]: Start difference. First operand 141 states and 156 transitions. Second operand 18 states. [2020-10-14 23:54:29,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:29,468 INFO L93 Difference]: Finished difference Result 149 states and 166 transitions. [2020-10-14 23:54:29,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:54:29,470 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 140 [2020-10-14 23:54:29,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:29,471 INFO L225 Difference]: With dead ends: 149 [2020-10-14 23:54:29,471 INFO L226 Difference]: Without dead ends: 144 [2020-10-14 23:54:29,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:54:29,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-14 23:54:29,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2020-10-14 23:54:29,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 23:54:29,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 159 transitions. [2020-10-14 23:54:29,476 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 159 transitions. Word has length 140 [2020-10-14 23:54:29,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:29,476 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 159 transitions. [2020-10-14 23:54:29,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:54:29,476 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 159 transitions. [2020-10-14 23:54:29,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 23:54:29,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:29,477 INFO L422 BasicCegarLoop]: trace histogram [66, 50, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:29,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 23:54:29,477 INFO L427 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:29,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:29,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1591227255, now seen corresponding path program 65 times [2020-10-14 23:54:29,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:29,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189594156] [2020-10-14 23:54:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:29,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:29,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:29,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 23:54:29,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:29,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-14 23:54:29,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:29,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:54:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:54:29,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:29,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:29,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:29,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:29,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:29,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:29,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:29,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:29,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:29,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:29,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:29,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:29,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:30,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 1650 proven. 256 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:30,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189594156] [2020-10-14 23:54:30,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:30,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:54:30,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8213414] [2020-10-14 23:54:30,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:54:30,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:30,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:54:30,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:54:30,001 INFO L87 Difference]: Start difference. First operand 143 states and 159 transitions. Second operand 19 states. [2020-10-14 23:54:30,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:30,095 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2020-10-14 23:54:30,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:54:30,095 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 142 [2020-10-14 23:54:30,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:30,097 INFO L225 Difference]: With dead ends: 151 [2020-10-14 23:54:30,097 INFO L226 Difference]: Without dead ends: 146 [2020-10-14 23:54:30,097 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 [2020-10-14 23:54:30,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-14 23:54:30,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2020-10-14 23:54:30,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-14 23:54:30,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2020-10-14 23:54:30,111 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 142 [2020-10-14 23:54:30,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:30,111 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2020-10-14 23:54:30,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:54:30,112 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2020-10-14 23:54:30,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 23:54:30,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:30,112 INFO L422 BasicCegarLoop]: trace histogram [67, 50, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:30,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-14 23:54:30,113 INFO L427 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:30,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:30,113 INFO L82 PathProgramCache]: Analyzing trace with hash 942003268, now seen corresponding path program 66 times [2020-10-14 23:54:30,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:30,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205100637] [2020-10-14 23:54:30,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:30,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:30,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 23:54:30,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:30,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-14 23:54:30,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:30,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:30,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:54:30,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 23:54:30,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:30,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:30,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:30,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:30,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:30,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:30,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:30,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:30,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:30,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:30,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:30,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:30,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:30,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 1750 proven. 289 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:30,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205100637] [2020-10-14 23:54:30,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:30,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:54:30,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140634938] [2020-10-14 23:54:30,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:54:30,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:30,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:54:30,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:54:30,672 INFO L87 Difference]: Start difference. First operand 145 states and 162 transitions. Second operand 20 states. [2020-10-14 23:54:30,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:30,772 INFO L93 Difference]: Finished difference Result 153 states and 172 transitions. [2020-10-14 23:54:30,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:54:30,773 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 144 [2020-10-14 23:54:30,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:30,775 INFO L225 Difference]: With dead ends: 153 [2020-10-14 23:54:30,775 INFO L226 Difference]: Without dead ends: 148 [2020-10-14 23:54:30,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:54:30,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-14 23:54:30,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2020-10-14 23:54:30,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 23:54:30,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 165 transitions. [2020-10-14 23:54:30,784 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 165 transitions. Word has length 144 [2020-10-14 23:54:30,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:30,784 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 165 transitions. [2020-10-14 23:54:30,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:54:30,785 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 165 transitions. [2020-10-14 23:54:30,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 23:54:30,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:30,786 INFO L422 BasicCegarLoop]: trace histogram [68, 50, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:30,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-14 23:54:30,787 INFO L427 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:30,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:30,787 INFO L82 PathProgramCache]: Analyzing trace with hash 130079039, now seen corresponding path program 67 times [2020-10-14 23:54:30,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:30,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328871608] [2020-10-14 23:54:30,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:30,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:31,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:31,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 23:54:31,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:31,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-14 23:54:31,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:31,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:31,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:54:31,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:31,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:54:31,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:31,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:31,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:31,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:31,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:31,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:31,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:31,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:31,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:31,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:31,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:31,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:31,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:31,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 1850 proven. 324 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:31,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328871608] [2020-10-14 23:54:31,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:31,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:54:31,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845912116] [2020-10-14 23:54:31,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:54:31,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:31,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:54:31,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:54:31,580 INFO L87 Difference]: Start difference. First operand 147 states and 165 transitions. Second operand 21 states. [2020-10-14 23:54:31,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:31,681 INFO L93 Difference]: Finished difference Result 155 states and 175 transitions. [2020-10-14 23:54:31,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:54:31,681 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 146 [2020-10-14 23:54:31,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:31,682 INFO L225 Difference]: With dead ends: 155 [2020-10-14 23:54:31,683 INFO L226 Difference]: Without dead ends: 150 [2020-10-14 23:54:31,683 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 [2020-10-14 23:54:31,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-14 23:54:31,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2020-10-14 23:54:31,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-14 23:54:31,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 168 transitions. [2020-10-14 23:54:31,688 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 168 transitions. Word has length 146 [2020-10-14 23:54:31,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:31,689 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 168 transitions. [2020-10-14 23:54:31,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:54:31,689 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 168 transitions. [2020-10-14 23:54:31,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 23:54:31,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:31,690 INFO L422 BasicCegarLoop]: trace histogram [69, 50, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:31,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-14 23:54:31,690 INFO L427 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:31,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:31,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1554942842, now seen corresponding path program 68 times [2020-10-14 23:54:31,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:31,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428667100] [2020-10-14 23:54:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:31,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:32,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:32,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 23:54:32,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:32,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-14 23:54:32,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:32,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:54:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:54:32,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:32,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:32,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:32,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:32,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:32,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:32,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:32,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:32,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:32,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:32,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:32,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:32,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 1950 proven. 361 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:32,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428667100] [2020-10-14 23:54:32,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:32,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:54:32,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175136747] [2020-10-14 23:54:32,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:54:32,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:32,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:54:32,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:54:32,368 INFO L87 Difference]: Start difference. First operand 149 states and 168 transitions. Second operand 22 states. [2020-10-14 23:54:32,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:32,468 INFO L93 Difference]: Finished difference Result 157 states and 178 transitions. [2020-10-14 23:54:32,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:54:32,472 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 148 [2020-10-14 23:54:32,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:32,473 INFO L225 Difference]: With dead ends: 157 [2020-10-14 23:54:32,473 INFO L226 Difference]: Without dead ends: 152 [2020-10-14 23:54:32,474 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 [2020-10-14 23:54:32,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-14 23:54:32,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2020-10-14 23:54:32,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-14 23:54:32,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 171 transitions. [2020-10-14 23:54:32,478 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 171 transitions. Word has length 148 [2020-10-14 23:54:32,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:32,478 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 171 transitions. [2020-10-14 23:54:32,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:54:32,478 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 171 transitions. [2020-10-14 23:54:32,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 23:54:32,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:32,479 INFO L422 BasicCegarLoop]: trace histogram [70, 50, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:32,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-14 23:54:32,480 INFO L427 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:32,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:32,480 INFO L82 PathProgramCache]: Analyzing trace with hash 754490101, now seen corresponding path program 69 times [2020-10-14 23:54:32,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:32,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673008133] [2020-10-14 23:54:32,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:32,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:33,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:33,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 23:54:33,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:33,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-14 23:54:33,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:33,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:33,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:54:33,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:33,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:54:33,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:33,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:33,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:33,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:33,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:33,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:33,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:33,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:33,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:33,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:33,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:33,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:33,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:33,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2050 proven. 400 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:33,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673008133] [2020-10-14 23:54:33,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:33,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:54:33,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550016575] [2020-10-14 23:54:33,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:54:33,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:33,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:54:33,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:54:33,329 INFO L87 Difference]: Start difference. First operand 151 states and 171 transitions. Second operand 23 states. [2020-10-14 23:54:33,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:33,441 INFO L93 Difference]: Finished difference Result 159 states and 181 transitions. [2020-10-14 23:54:33,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:54:33,442 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 150 [2020-10-14 23:54:33,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:33,443 INFO L225 Difference]: With dead ends: 159 [2020-10-14 23:54:33,443 INFO L226 Difference]: Without dead ends: 154 [2020-10-14 23:54:33,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:54:33,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-14 23:54:33,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2020-10-14 23:54:33,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 23:54:33,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2020-10-14 23:54:33,449 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 150 [2020-10-14 23:54:33,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:33,449 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2020-10-14 23:54:33,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:54:33,449 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2020-10-14 23:54:33,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 23:54:33,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:33,450 INFO L422 BasicCegarLoop]: trace histogram [71, 50, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:33,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-14 23:54:33,451 INFO L427 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:33,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:33,451 INFO L82 PathProgramCache]: Analyzing trace with hash 318551984, now seen corresponding path program 70 times [2020-10-14 23:54:33,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:33,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924323138] [2020-10-14 23:54:33,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:33,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:33,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:33,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 23:54:33,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:33,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-14 23:54:33,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:33,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:33,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:54:33,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:33,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:54:33,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:34,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:34,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:34,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:34,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:34,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:34,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:34,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:34,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:34,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:34,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:34,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:34,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 2150 proven. 441 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:34,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924323138] [2020-10-14 23:54:34,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:34,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 23:54:34,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109081673] [2020-10-14 23:54:34,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 23:54:34,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:34,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 23:54:34,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:54:34,224 INFO L87 Difference]: Start difference. First operand 153 states and 174 transitions. Second operand 24 states. [2020-10-14 23:54:34,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:34,343 INFO L93 Difference]: Finished difference Result 161 states and 184 transitions. [2020-10-14 23:54:34,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:54:34,345 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 152 [2020-10-14 23:54:34,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:34,346 INFO L225 Difference]: With dead ends: 161 [2020-10-14 23:54:34,346 INFO L226 Difference]: Without dead ends: 156 [2020-10-14 23:54:34,347 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 [2020-10-14 23:54:34,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-14 23:54:34,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2020-10-14 23:54:34,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-14 23:54:34,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 177 transitions. [2020-10-14 23:54:34,351 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 177 transitions. Word has length 152 [2020-10-14 23:54:34,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:34,351 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 177 transitions. [2020-10-14 23:54:34,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 23:54:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 177 transitions. [2020-10-14 23:54:34,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 23:54:34,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:34,352 INFO L422 BasicCegarLoop]: trace histogram [72, 50, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:34,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-14 23:54:34,353 INFO L427 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:34,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:34,353 INFO L82 PathProgramCache]: Analyzing trace with hash -2006150741, now seen corresponding path program 71 times [2020-10-14 23:54:34,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:34,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571474700] [2020-10-14 23:54:34,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:34,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:34,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:34,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 23:54:34,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:34,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-14 23:54:34,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:34,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:34,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 23:54:34,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:34,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:54:34,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:35,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:35,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:35,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:35,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:35,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:35,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:35,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:35,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:35,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:35,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:35,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:35,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:35,150 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 2250 proven. 484 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:35,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571474700] [2020-10-14 23:54:35,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:35,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 23:54:35,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316007947] [2020-10-14 23:54:35,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 23:54:35,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:35,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 23:54:35,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:54:35,152 INFO L87 Difference]: Start difference. First operand 155 states and 177 transitions. Second operand 25 states. [2020-10-14 23:54:35,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:35,276 INFO L93 Difference]: Finished difference Result 163 states and 187 transitions. [2020-10-14 23:54:35,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:54:35,276 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 154 [2020-10-14 23:54:35,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:35,278 INFO L225 Difference]: With dead ends: 163 [2020-10-14 23:54:35,278 INFO L226 Difference]: Without dead ends: 158 [2020-10-14 23:54:35,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:54:35,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-14 23:54:35,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2020-10-14 23:54:35,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-14 23:54:35,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2020-10-14 23:54:35,282 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 154 [2020-10-14 23:54:35,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:35,282 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2020-10-14 23:54:35,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 23:54:35,283 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2020-10-14 23:54:35,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 23:54:35,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:35,284 INFO L422 BasicCegarLoop]: trace histogram [73, 50, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:35,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-14 23:54:35,284 INFO L427 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:35,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1632491750, now seen corresponding path program 72 times [2020-10-14 23:54:35,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:35,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636032366] [2020-10-14 23:54:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:35,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:35,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:35,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 23:54:35,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:35,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-10-14 23:54:35,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:35,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:35,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:54:35,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:35,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 23:54:35,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:36,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:36,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:36,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:36,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:36,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:36,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:36,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:36,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:36,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:36,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:36,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:36,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:54:36,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 2350 proven. 529 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:36,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636032366] [2020-10-14 23:54:36,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:36,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 23:54:36,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525831364] [2020-10-14 23:54:36,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 23:54:36,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:36,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 23:54:36,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:54:36,174 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand 26 states. [2020-10-14 23:54:36,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:36,302 INFO L93 Difference]: Finished difference Result 165 states and 190 transitions. [2020-10-14 23:54:36,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:54:36,302 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 156 [2020-10-14 23:54:36,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:36,303 INFO L225 Difference]: With dead ends: 165 [2020-10-14 23:54:36,304 INFO L226 Difference]: Without dead ends: 160 [2020-10-14 23:54:36,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:54:36,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-14 23:54:36,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2020-10-14 23:54:36,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-14 23:54:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 183 transitions. [2020-10-14 23:54:36,308 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 183 transitions. Word has length 156 [2020-10-14 23:54:36,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:36,309 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 183 transitions. [2020-10-14 23:54:36,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 23:54:36,309 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 183 transitions. [2020-10-14 23:54:36,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 23:54:36,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:36,310 INFO L422 BasicCegarLoop]: trace histogram [74, 50, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:36,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-14 23:54:36,310 INFO L427 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:36,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:36,311 INFO L82 PathProgramCache]: Analyzing trace with hash -2030420639, now seen corresponding path program 73 times [2020-10-14 23:54:36,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:36,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11173264] [2020-10-14 23:54:36,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:36,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:36,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:36,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 23:54:36,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:36,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-14 23:54:36,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:36,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:36,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 23:54:36,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:36,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:54:36,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:37,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:37,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:37,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:37,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:37,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:37,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:37,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:37,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:37,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:37,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 2450 proven. 576 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:37,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11173264] [2020-10-14 23:54:37,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:37,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 23:54:37,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618107784] [2020-10-14 23:54:37,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 23:54:37,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:37,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 23:54:37,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:54:37,254 INFO L87 Difference]: Start difference. First operand 159 states and 183 transitions. Second operand 27 states. [2020-10-14 23:54:37,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:37,382 INFO L93 Difference]: Finished difference Result 167 states and 193 transitions. [2020-10-14 23:54:37,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:54:37,383 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 158 [2020-10-14 23:54:37,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:37,384 INFO L225 Difference]: With dead ends: 167 [2020-10-14 23:54:37,384 INFO L226 Difference]: Without dead ends: 162 [2020-10-14 23:54:37,384 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 [2020-10-14 23:54:37,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-14 23:54:37,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-10-14 23:54:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 23:54:37,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 186 transitions. [2020-10-14 23:54:37,388 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 186 transitions. Word has length 158 [2020-10-14 23:54:37,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:37,389 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 186 transitions. [2020-10-14 23:54:37,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 23:54:37,389 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 186 transitions. [2020-10-14 23:54:37,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-14 23:54:37,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:37,390 INFO L422 BasicCegarLoop]: trace histogram [75, 50, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:37,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-14 23:54:37,390 INFO L427 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:37,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:37,391 INFO L82 PathProgramCache]: Analyzing trace with hash -216043748, now seen corresponding path program 74 times [2020-10-14 23:54:37,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:37,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483493348] [2020-10-14 23:54:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:37,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:37,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:37,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 23:54:37,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:37,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-14 23:54:37,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:37,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:37,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 23:54:37,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:37,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:54:37,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:38,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:38,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:38,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:38,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:38,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:38,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:38,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:38,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:38,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:38,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 2550 proven. 625 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:38,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483493348] [2020-10-14 23:54:38,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:38,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 23:54:38,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933804809] [2020-10-14 23:54:38,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 23:54:38,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:38,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 23:54:38,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:54:38,368 INFO L87 Difference]: Start difference. First operand 161 states and 186 transitions. Second operand 28 states. [2020-10-14 23:54:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:38,499 INFO L93 Difference]: Finished difference Result 169 states and 196 transitions. [2020-10-14 23:54:38,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:54:38,502 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 160 [2020-10-14 23:54:38,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:38,503 INFO L225 Difference]: With dead ends: 169 [2020-10-14 23:54:38,503 INFO L226 Difference]: Without dead ends: 164 [2020-10-14 23:54:38,503 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 [2020-10-14 23:54:38,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-14 23:54:38,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2020-10-14 23:54:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-14 23:54:38,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 189 transitions. [2020-10-14 23:54:38,507 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 189 transitions. Word has length 160 [2020-10-14 23:54:38,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:38,507 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 189 transitions. [2020-10-14 23:54:38,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 23:54:38,508 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 189 transitions. [2020-10-14 23:54:38,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 23:54:38,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:38,509 INFO L422 BasicCegarLoop]: trace histogram [76, 50, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:38,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-14 23:54:38,509 INFO L427 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:38,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:38,509 INFO L82 PathProgramCache]: Analyzing trace with hash -356573673, now seen corresponding path program 75 times [2020-10-14 23:54:38,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:38,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119632867] [2020-10-14 23:54:38,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:38,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:39,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:39,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 23:54:39,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:39,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-14 23:54:39,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:39,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:39,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:54:39,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:39,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:54:39,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:39,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:39,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:39,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:39,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:39,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:39,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:54:39,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:39,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:39,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:54:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 2650 proven. 676 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:39,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119632867] [2020-10-14 23:54:39,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:39,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 23:54:39,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925576036] [2020-10-14 23:54:39,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 23:54:39,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:39,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 23:54:39,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:54:39,575 INFO L87 Difference]: Start difference. First operand 163 states and 189 transitions. Second operand 29 states. [2020-10-14 23:54:39,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:39,724 INFO L93 Difference]: Finished difference Result 171 states and 199 transitions. [2020-10-14 23:54:39,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 23:54:39,725 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 162 [2020-10-14 23:54:39,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:39,726 INFO L225 Difference]: With dead ends: 171 [2020-10-14 23:54:39,726 INFO L226 Difference]: Without dead ends: 166 [2020-10-14 23:54:39,726 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 [2020-10-14 23:54:39,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-14 23:54:39,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2020-10-14 23:54:39,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 23:54:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 192 transitions. [2020-10-14 23:54:39,731 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 192 transitions. Word has length 162 [2020-10-14 23:54:39,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:39,732 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 192 transitions. [2020-10-14 23:54:39,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 23:54:39,732 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 192 transitions. [2020-10-14 23:54:39,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 23:54:39,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:39,733 INFO L422 BasicCegarLoop]: trace histogram [77, 50, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:39,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-14 23:54:39,733 INFO L427 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:39,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:39,734 INFO L82 PathProgramCache]: Analyzing trace with hash 2033121874, now seen corresponding path program 76 times [2020-10-14 23:54:39,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:39,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887437235] [2020-10-14 23:54:39,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:39,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:40,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:40,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 23:54:40,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:40,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-10-14 23:54:40,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:40,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:40,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 23:54:40,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:40,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 23:54:40,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:40,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:40,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:40,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:40,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:40,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:40,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:40,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:40,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:40,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:40,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:40,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:40,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 2750 proven. 729 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:40,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887437235] [2020-10-14 23:54:40,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:40,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 23:54:40,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970575814] [2020-10-14 23:54:40,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 23:54:40,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:40,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 23:54:40,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:54:40,849 INFO L87 Difference]: Start difference. First operand 165 states and 192 transitions. Second operand 30 states. [2020-10-14 23:54:40,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:40,994 INFO L93 Difference]: Finished difference Result 173 states and 202 transitions. [2020-10-14 23:54:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 23:54:40,994 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 164 [2020-10-14 23:54:40,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:40,995 INFO L225 Difference]: With dead ends: 173 [2020-10-14 23:54:40,995 INFO L226 Difference]: Without dead ends: 168 [2020-10-14 23:54:40,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:54:40,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-14 23:54:40,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2020-10-14 23:54:41,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-14 23:54:41,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 195 transitions. [2020-10-14 23:54:41,000 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 195 transitions. Word has length 164 [2020-10-14 23:54:41,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:41,000 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 195 transitions. [2020-10-14 23:54:41,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 23:54:41,001 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 195 transitions. [2020-10-14 23:54:41,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 23:54:41,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:41,002 INFO L422 BasicCegarLoop]: trace histogram [78, 50, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:41,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-14 23:54:41,002 INFO L427 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:41,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:41,002 INFO L82 PathProgramCache]: Analyzing trace with hash 723039181, now seen corresponding path program 77 times [2020-10-14 23:54:41,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:41,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157221586] [2020-10-14 23:54:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:41,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:41,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:41,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 23:54:41,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:41,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-10-14 23:54:41,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:41,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:41,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 23:54:41,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:41,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 23:54:41,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:42,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:42,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:42,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:42,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:42,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:42,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:42,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:42,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:42,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 2850 proven. 784 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:42,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157221586] [2020-10-14 23:54:42,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:42,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 23:54:42,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856432179] [2020-10-14 23:54:42,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 23:54:42,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:42,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 23:54:42,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:54:42,169 INFO L87 Difference]: Start difference. First operand 167 states and 195 transitions. Second operand 31 states. [2020-10-14 23:54:42,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:42,328 INFO L93 Difference]: Finished difference Result 175 states and 205 transitions. [2020-10-14 23:54:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 23:54:42,328 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 166 [2020-10-14 23:54:42,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:42,330 INFO L225 Difference]: With dead ends: 175 [2020-10-14 23:54:42,330 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 23:54:42,331 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 [2020-10-14 23:54:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 23:54:42,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2020-10-14 23:54:42,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-14 23:54:42,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 198 transitions. [2020-10-14 23:54:42,336 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 198 transitions. Word has length 166 [2020-10-14 23:54:42,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:42,336 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 198 transitions. [2020-10-14 23:54:42,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 23:54:42,336 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 198 transitions. [2020-10-14 23:54:42,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 23:54:42,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:42,337 INFO L422 BasicCegarLoop]: trace histogram [79, 50, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:42,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2020-10-14 23:54:42,338 INFO L427 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:42,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:42,338 INFO L82 PathProgramCache]: Analyzing trace with hash 158988936, now seen corresponding path program 78 times [2020-10-14 23:54:42,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:42,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113960228] [2020-10-14 23:54:42,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:42,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:43,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:43,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 23:54:43,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 784 [2020-10-14 23:54:43,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:43,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 23:54:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 23:54:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:43,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:43,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:43,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:43,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:43,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:43,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:43,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:43,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:43,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 2950 proven. 841 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:43,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113960228] [2020-10-14 23:54:43,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:43,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 23:54:43,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910978836] [2020-10-14 23:54:43,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 23:54:43,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:43,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 23:54:43,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:54:43,667 INFO L87 Difference]: Start difference. First operand 169 states and 198 transitions. Second operand 32 states. [2020-10-14 23:54:43,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:43,820 INFO L93 Difference]: Finished difference Result 177 states and 208 transitions. [2020-10-14 23:54:43,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 23:54:43,820 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 168 [2020-10-14 23:54:43,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:43,821 INFO L225 Difference]: With dead ends: 177 [2020-10-14 23:54:43,821 INFO L226 Difference]: Without dead ends: 172 [2020-10-14 23:54:43,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:54:43,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-14 23:54:43,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2020-10-14 23:54:43,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-14 23:54:43,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 201 transitions. [2020-10-14 23:54:43,826 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 201 transitions. Word has length 168 [2020-10-14 23:54:43,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:43,826 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 201 transitions. [2020-10-14 23:54:43,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 23:54:43,826 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 201 transitions. [2020-10-14 23:54:43,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 23:54:43,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:43,828 INFO L422 BasicCegarLoop]: trace histogram [80, 50, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:43,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-14 23:54:43,828 INFO L427 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:43,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:43,828 INFO L82 PathProgramCache]: Analyzing trace with hash -727417213, now seen corresponding path program 79 times [2020-10-14 23:54:43,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:43,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171124493] [2020-10-14 23:54:43,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:44,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:44,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 23:54:44,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:44,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 777 [2020-10-14 23:54:44,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:44,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 23:54:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 23:54:44,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:45,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:45,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:45,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:45,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:45,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:45,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:45,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:45,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:45,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:45,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:45,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:54:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 3050 proven. 900 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:45,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171124493] [2020-10-14 23:54:45,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:45,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 23:54:45,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581502354] [2020-10-14 23:54:45,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 23:54:45,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:45,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 23:54:45,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:54:45,183 INFO L87 Difference]: Start difference. First operand 171 states and 201 transitions. Second operand 33 states. [2020-10-14 23:54:45,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:45,346 INFO L93 Difference]: Finished difference Result 179 states and 211 transitions. [2020-10-14 23:54:45,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 23:54:45,347 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 170 [2020-10-14 23:54:45,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:45,348 INFO L225 Difference]: With dead ends: 179 [2020-10-14 23:54:45,348 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 23:54:45,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:54:45,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 23:54:45,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2020-10-14 23:54:45,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-14 23:54:45,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 204 transitions. [2020-10-14 23:54:45,353 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 204 transitions. Word has length 170 [2020-10-14 23:54:45,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:45,353 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 204 transitions. [2020-10-14 23:54:45,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 23:54:45,353 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 204 transitions. [2020-10-14 23:54:45,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 23:54:45,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:45,354 INFO L422 BasicCegarLoop]: trace histogram [81, 50, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:45,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-14 23:54:45,355 INFO L427 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:45,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:45,355 INFO L82 PathProgramCache]: Analyzing trace with hash 2134765502, now seen corresponding path program 80 times [2020-10-14 23:54:45,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:45,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051224461] [2020-10-14 23:54:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:45,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:46,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:46,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 23:54:46,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:46,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-14 23:54:46,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:46,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:46,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 23:54:46,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:46,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 23:54:46,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:46,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:46,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:46,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:46,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:46,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:46,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:46,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:46,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:46,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:46,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:46,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:46,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:46,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 3150 proven. 961 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:46,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051224461] [2020-10-14 23:54:46,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:46,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 23:54:46,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124251124] [2020-10-14 23:54:46,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 23:54:46,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:46,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 23:54:46,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:54:46,761 INFO L87 Difference]: Start difference. First operand 173 states and 204 transitions. Second operand 34 states. [2020-10-14 23:54:46,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:46,937 INFO L93 Difference]: Finished difference Result 181 states and 214 transitions. [2020-10-14 23:54:46,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 23:54:46,938 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 172 [2020-10-14 23:54:46,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:46,939 INFO L225 Difference]: With dead ends: 181 [2020-10-14 23:54:46,939 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 23:54:46,940 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 [2020-10-14 23:54:46,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 23:54:46,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2020-10-14 23:54:46,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-14 23:54:46,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 207 transitions. [2020-10-14 23:54:46,944 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 207 transitions. Word has length 172 [2020-10-14 23:54:46,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:46,944 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 207 transitions. [2020-10-14 23:54:46,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 23:54:46,944 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 207 transitions. [2020-10-14 23:54:46,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 23:54:46,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:46,946 INFO L422 BasicCegarLoop]: trace histogram [82, 50, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:46,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2020-10-14 23:54:46,946 INFO L427 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:46,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:46,946 INFO L82 PathProgramCache]: Analyzing trace with hash -381682119, now seen corresponding path program 81 times [2020-10-14 23:54:46,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:46,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111064282] [2020-10-14 23:54:46,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:46,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:47,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:47,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 23:54:47,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:47,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-10-14 23:54:47,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:47,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 23:54:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 23:54:47,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:48,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:48,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:48,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:48,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:48,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:48,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:48,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:48,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:48,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:54:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 3250 proven. 1024 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:48,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111064282] [2020-10-14 23:54:48,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:48,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 23:54:48,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315322364] [2020-10-14 23:54:48,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 23:54:48,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:48,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 23:54:48,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:54:48,442 INFO L87 Difference]: Start difference. First operand 175 states and 207 transitions. Second operand 35 states. [2020-10-14 23:54:48,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:48,640 INFO L93 Difference]: Finished difference Result 183 states and 217 transitions. [2020-10-14 23:54:48,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 23:54:48,641 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 174 [2020-10-14 23:54:48,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:48,642 INFO L225 Difference]: With dead ends: 183 [2020-10-14 23:54:48,642 INFO L226 Difference]: Without dead ends: 178 [2020-10-14 23:54:48,643 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 [2020-10-14 23:54:48,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-14 23:54:48,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2020-10-14 23:54:48,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-14 23:54:48,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 210 transitions. [2020-10-14 23:54:48,647 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 210 transitions. Word has length 174 [2020-10-14 23:54:48,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:48,648 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 210 transitions. [2020-10-14 23:54:48,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 23:54:48,648 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 210 transitions. [2020-10-14 23:54:48,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-14 23:54:48,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:48,649 INFO L422 BasicCegarLoop]: trace histogram [83, 50, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:48,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-10-14 23:54:48,649 INFO L427 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:48,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:48,650 INFO L82 PathProgramCache]: Analyzing trace with hash -621258252, now seen corresponding path program 82 times [2020-10-14 23:54:48,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:48,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474846167] [2020-10-14 23:54:48,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:48,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:50,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:50,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 23:54:50,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:50,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1610 [2020-10-14 23:54:50,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:50,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:50,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 23:54:50,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:50,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 23:54:50,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:50,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:50,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:50,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:50,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:50,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:50,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:50,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:50,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:50,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:50,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 3350 proven. 1089 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:50,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474846167] [2020-10-14 23:54:50,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:50,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 23:54:50,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929210517] [2020-10-14 23:54:50,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 23:54:50,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:50,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 23:54:50,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:54:50,968 INFO L87 Difference]: Start difference. First operand 177 states and 210 transitions. Second operand 36 states. [2020-10-14 23:54:51,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:51,151 INFO L93 Difference]: Finished difference Result 185 states and 220 transitions. [2020-10-14 23:54:51,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 23:54:51,152 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 176 [2020-10-14 23:54:51,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:51,153 INFO L225 Difference]: With dead ends: 185 [2020-10-14 23:54:51,153 INFO L226 Difference]: Without dead ends: 180 [2020-10-14 23:54:51,153 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 [2020-10-14 23:54:51,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-14 23:54:51,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2020-10-14 23:54:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-14 23:54:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 213 transitions. [2020-10-14 23:54:51,157 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 213 transitions. Word has length 176 [2020-10-14 23:54:51,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:51,157 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 213 transitions. [2020-10-14 23:54:51,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 23:54:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 213 transitions. [2020-10-14 23:54:51,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 23:54:51,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:51,158 INFO L422 BasicCegarLoop]: trace histogram [84, 50, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:51,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-14 23:54:51,158 INFO L427 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:51,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:51,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1074311919, now seen corresponding path program 83 times [2020-10-14 23:54:51,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:51,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358186834] [2020-10-14 23:54:51,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:51,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:52,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:52,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 23:54:52,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:52,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 931 [2020-10-14 23:54:52,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:52,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 23:54:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:52,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 23:54:52,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:52,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:52,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:52,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:52,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:52,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:52,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:52,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:52,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:52,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:52,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:52,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:52,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:52,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 3450 proven. 1156 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:52,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358186834] [2020-10-14 23:54:52,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:52,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 23:54:52,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518116085] [2020-10-14 23:54:52,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 23:54:52,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:52,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 23:54:52,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:54:52,811 INFO L87 Difference]: Start difference. First operand 179 states and 213 transitions. Second operand 37 states. [2020-10-14 23:54:53,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:53,016 INFO L93 Difference]: Finished difference Result 187 states and 223 transitions. [2020-10-14 23:54:53,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 23:54:53,016 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 178 [2020-10-14 23:54:53,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:53,017 INFO L225 Difference]: With dead ends: 187 [2020-10-14 23:54:53,017 INFO L226 Difference]: Without dead ends: 182 [2020-10-14 23:54:53,017 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 [2020-10-14 23:54:53,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-14 23:54:53,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2020-10-14 23:54:53,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 23:54:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 216 transitions. [2020-10-14 23:54:53,022 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 216 transitions. Word has length 178 [2020-10-14 23:54:53,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:53,023 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 216 transitions. [2020-10-14 23:54:53,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 23:54:53,023 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 216 transitions. [2020-10-14 23:54:53,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-14 23:54:53,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:53,024 INFO L422 BasicCegarLoop]: trace histogram [85, 50, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:53,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-14 23:54:53,024 INFO L427 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:53,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:53,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1570326230, now seen corresponding path program 84 times [2020-10-14 23:54:53,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:53,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996031892] [2020-10-14 23:54:53,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:54,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:54,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 23:54:54,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:54,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 952 [2020-10-14 23:54:54,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:54,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 23:54:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 23:54:54,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:54,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:54,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:54,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:54,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:54,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:54,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:54,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:54,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:54,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:54,744 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 3550 proven. 1225 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:54,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996031892] [2020-10-14 23:54:54,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:54,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 23:54:54,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026181608] [2020-10-14 23:54:54,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 23:54:54,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:54,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 23:54:54,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:54:54,746 INFO L87 Difference]: Start difference. First operand 181 states and 216 transitions. Second operand 38 states. [2020-10-14 23:54:54,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:54,940 INFO L93 Difference]: Finished difference Result 189 states and 226 transitions. [2020-10-14 23:54:54,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 23:54:54,940 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 180 [2020-10-14 23:54:54,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:54,941 INFO L225 Difference]: With dead ends: 189 [2020-10-14 23:54:54,941 INFO L226 Difference]: Without dead ends: 184 [2020-10-14 23:54:54,942 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 [2020-10-14 23:54:54,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-14 23:54:54,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2020-10-14 23:54:54,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-14 23:54:54,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 219 transitions. [2020-10-14 23:54:54,946 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 219 transitions. Word has length 180 [2020-10-14 23:54:54,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:54,947 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 219 transitions. [2020-10-14 23:54:54,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 23:54:54,947 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 219 transitions. [2020-10-14 23:54:54,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 23:54:54,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:54,948 INFO L422 BasicCegarLoop]: trace histogram [86, 50, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:54,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2020-10-14 23:54:54,948 INFO L427 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:54,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:54,949 INFO L82 PathProgramCache]: Analyzing trace with hash -446948187, now seen corresponding path program 85 times [2020-10-14 23:54:54,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:54,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765893228] [2020-10-14 23:54:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:55,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:55,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:55,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 23:54:55,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:55,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-14 23:54:55,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:55,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:55,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 23:54:55,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:55,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:54:55,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:56,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:56,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:56,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:56,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:56,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:56,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:56,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:56,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:56,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:56,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:56,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:56,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 3650 proven. 1296 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:56,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765893228] [2020-10-14 23:54:56,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:56,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-14 23:54:56,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259702081] [2020-10-14 23:54:56,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-14 23:54:56,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:56,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-14 23:54:56,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:54:56,705 INFO L87 Difference]: Start difference. First operand 183 states and 219 transitions. Second operand 39 states. [2020-10-14 23:54:56,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:56,907 INFO L93 Difference]: Finished difference Result 191 states and 229 transitions. [2020-10-14 23:54:56,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 23:54:56,907 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 182 [2020-10-14 23:54:56,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:56,908 INFO L225 Difference]: With dead ends: 191 [2020-10-14 23:54:56,908 INFO L226 Difference]: Without dead ends: 186 [2020-10-14 23:54:56,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:54:56,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-14 23:54:56,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2020-10-14 23:54:56,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-14 23:54:56,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 222 transitions. [2020-10-14 23:54:56,914 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 222 transitions. Word has length 182 [2020-10-14 23:54:56,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:56,914 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 222 transitions. [2020-10-14 23:54:56,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-14 23:54:56,915 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 222 transitions. [2020-10-14 23:54:56,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 23:54:56,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:56,916 INFO L422 BasicCegarLoop]: trace histogram [87, 50, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:56,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2020-10-14 23:54:56,916 INFO L427 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:56,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:56,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1082559840, now seen corresponding path program 86 times [2020-10-14 23:54:56,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:56,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981446749] [2020-10-14 23:54:56,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:56,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:57,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:57,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 23:54:57,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:57,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-14 23:54:57,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:57,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:57,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 23:54:57,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:54:57,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:54:57,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:58,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:58,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:58,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:58,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:54:58,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:58,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:58,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:58,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:58,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:58,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:58,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:58,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 3750 proven. 1369 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:54:58,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981446749] [2020-10-14 23:54:58,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:58,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 23:54:58,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660870000] [2020-10-14 23:54:58,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 23:54:58,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:58,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 23:54:58,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 23:54:58,810 INFO L87 Difference]: Start difference. First operand 185 states and 222 transitions. Second operand 40 states. [2020-10-14 23:54:59,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:59,035 INFO L93 Difference]: Finished difference Result 193 states and 232 transitions. [2020-10-14 23:54:59,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 23:54:59,035 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 184 [2020-10-14 23:54:59,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:59,036 INFO L225 Difference]: With dead ends: 193 [2020-10-14 23:54:59,036 INFO L226 Difference]: Without dead ends: 188 [2020-10-14 23:54:59,037 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 [2020-10-14 23:54:59,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-14 23:54:59,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2020-10-14 23:54:59,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-14 23:54:59,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 225 transitions. [2020-10-14 23:54:59,042 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 225 transitions. Word has length 184 [2020-10-14 23:54:59,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:59,042 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 225 transitions. [2020-10-14 23:54:59,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 23:54:59,042 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 225 transitions. [2020-10-14 23:54:59,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 23:54:59,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:59,043 INFO L422 BasicCegarLoop]: trace histogram [88, 50, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:59,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-10-14 23:54:59,043 INFO L427 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:59,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:59,044 INFO L82 PathProgramCache]: Analyzing trace with hash 2060958555, now seen corresponding path program 87 times [2020-10-14 23:54:59,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:59,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733742171] [2020-10-14 23:54:59,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:59,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:00,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:00,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 23:55:00,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:00,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-10-14 23:55:00,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:00,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:00,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 23:55:00,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:55:00,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 23:55:00,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:00,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:00,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:00,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:00,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:00,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:00,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:55:00,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:00,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:00,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:00,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:00,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:00,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:00,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 3850 proven. 1444 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:55:00,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733742171] [2020-10-14 23:55:00,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:00,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-14 23:55:00,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038297306] [2020-10-14 23:55:00,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-14 23:55:00,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:00,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-14 23:55:00,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:55:00,990 INFO L87 Difference]: Start difference. First operand 187 states and 225 transitions. Second operand 41 states. [2020-10-14 23:55:01,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:01,222 INFO L93 Difference]: Finished difference Result 195 states and 235 transitions. [2020-10-14 23:55:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 23:55:01,222 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 186 [2020-10-14 23:55:01,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:01,223 INFO L225 Difference]: With dead ends: 195 [2020-10-14 23:55:01,224 INFO L226 Difference]: Without dead ends: 190 [2020-10-14 23:55:01,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:55:01,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-14 23:55:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2020-10-14 23:55:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 23:55:01,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 228 transitions. [2020-10-14 23:55:01,228 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 228 transitions. Word has length 186 [2020-10-14 23:55:01,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:01,228 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 228 transitions. [2020-10-14 23:55:01,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-14 23:55:01,229 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 228 transitions. [2020-10-14 23:55:01,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 23:55:01,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:01,230 INFO L422 BasicCegarLoop]: trace histogram [89, 50, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:01,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2020-10-14 23:55:01,230 INFO L427 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:01,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:01,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1704285846, now seen corresponding path program 88 times [2020-10-14 23:55:01,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:01,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282741834] [2020-10-14 23:55:01,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:01,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:02,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:02,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 23:55:02,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:02,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1128 [2020-10-14 23:55:02,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:02,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 23:55:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:55:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 23:55:02,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:03,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:03,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:03,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:03,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:03,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:03,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:03,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:03,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:03,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:03,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:03,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:03,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:03,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 3950 proven. 1521 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:55:03,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282741834] [2020-10-14 23:55:03,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:03,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-14 23:55:03,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871986875] [2020-10-14 23:55:03,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-14 23:55:03,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:03,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-14 23:55:03,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:55:03,297 INFO L87 Difference]: Start difference. First operand 189 states and 228 transitions. Second operand 42 states. [2020-10-14 23:55:03,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:03,514 INFO L93 Difference]: Finished difference Result 197 states and 238 transitions. [2020-10-14 23:55:03,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 23:55:03,514 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 188 [2020-10-14 23:55:03,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:03,515 INFO L225 Difference]: With dead ends: 197 [2020-10-14 23:55:03,515 INFO L226 Difference]: Without dead ends: 192 [2020-10-14 23:55:03,515 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 [2020-10-14 23:55:03,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-14 23:55:03,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2020-10-14 23:55:03,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-14 23:55:03,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 231 transitions. [2020-10-14 23:55:03,519 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 231 transitions. Word has length 188 [2020-10-14 23:55:03,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:03,519 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 231 transitions. [2020-10-14 23:55:03,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-14 23:55:03,519 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 231 transitions. [2020-10-14 23:55:03,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 23:55:03,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:03,520 INFO L422 BasicCegarLoop]: trace histogram [90, 50, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:03,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-14 23:55:03,520 INFO L427 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:03,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:03,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1755771119, now seen corresponding path program 89 times [2020-10-14 23:55:03,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:03,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597730816] [2020-10-14 23:55:03,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:03,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:05,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:05,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 23:55:05,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:05,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1444 [2020-10-14 23:55:05,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:05,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-14 23:55:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:55:05,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 23:55:05,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:05,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:05,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:05,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:05,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:05,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:05,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:55:05,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:05,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:05,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:05,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:05,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:05,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:05,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 4050 proven. 1600 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:55:05,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597730816] [2020-10-14 23:55:05,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:05,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-14 23:55:05,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927431473] [2020-10-14 23:55:05,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-14 23:55:05,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:05,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-14 23:55:05,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:55:05,960 INFO L87 Difference]: Start difference. First operand 191 states and 231 transitions. Second operand 43 states. [2020-10-14 23:55:06,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:06,181 INFO L93 Difference]: Finished difference Result 199 states and 241 transitions. [2020-10-14 23:55:06,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 23:55:06,181 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 190 [2020-10-14 23:55:06,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:06,182 INFO L225 Difference]: With dead ends: 199 [2020-10-14 23:55:06,182 INFO L226 Difference]: Without dead ends: 194 [2020-10-14 23:55:06,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:55:06,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-14 23:55:06,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2020-10-14 23:55:06,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-14 23:55:06,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 234 transitions. [2020-10-14 23:55:06,186 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 234 transitions. Word has length 190 [2020-10-14 23:55:06,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:06,187 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 234 transitions. [2020-10-14 23:55:06,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-14 23:55:06,187 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 234 transitions. [2020-10-14 23:55:06,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 23:55:06,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:06,188 INFO L422 BasicCegarLoop]: trace histogram [91, 50, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:06,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-14 23:55:06,189 INFO L427 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:06,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:06,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1729139916, now seen corresponding path program 90 times [2020-10-14 23:55:06,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:06,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684287979] [2020-10-14 23:55:06,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:06,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:07,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:07,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 23:55:07,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:07,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1237 [2020-10-14 23:55:07,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:07,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:07,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 23:55:07,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:55:07,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 23:55:07,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:08,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:08,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:08,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:08,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:08,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:08,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:55:08,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:08,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:08,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:08,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:08,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:08,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 4150 proven. 1681 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:55:08,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684287979] [2020-10-14 23:55:08,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:08,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-14 23:55:08,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91428500] [2020-10-14 23:55:08,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-14 23:55:08,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:08,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-14 23:55:08,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 23:55:08,458 INFO L87 Difference]: Start difference. First operand 193 states and 234 transitions. Second operand 44 states. [2020-10-14 23:55:08,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:08,695 INFO L93 Difference]: Finished difference Result 201 states and 244 transitions. [2020-10-14 23:55:08,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 23:55:08,695 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 192 [2020-10-14 23:55:08,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:08,696 INFO L225 Difference]: With dead ends: 201 [2020-10-14 23:55:08,697 INFO L226 Difference]: Without dead ends: 196 [2020-10-14 23:55:08,697 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 [2020-10-14 23:55:08,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-14 23:55:08,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2020-10-14 23:55:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-14 23:55:08,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 237 transitions. [2020-10-14 23:55:08,701 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 237 transitions. Word has length 192 [2020-10-14 23:55:08,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:08,701 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 237 transitions. [2020-10-14 23:55:08,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-14 23:55:08,701 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 237 transitions. [2020-10-14 23:55:08,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 23:55:08,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:08,702 INFO L422 BasicCegarLoop]: trace histogram [92, 50, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:08,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-14 23:55:08,702 INFO L427 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:08,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:08,702 INFO L82 PathProgramCache]: Analyzing trace with hash 654153671, now seen corresponding path program 91 times [2020-10-14 23:55:08,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:08,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533936436] [2020-10-14 23:55:08,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:08,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:10,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:10,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 23:55:10,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:10,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1292 [2020-10-14 23:55:10,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:10,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:10,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-14 23:55:10,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:55:10,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 23:55:10,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:11,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:11,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:11,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:11,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:11,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:11,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:55:11,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:11,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:11,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:11,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:11,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 4250 proven. 1764 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:55:11,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533936436] [2020-10-14 23:55:11,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:11,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-14 23:55:11,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871136363] [2020-10-14 23:55:11,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-14 23:55:11,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:11,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-14 23:55:11,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 23:55:11,083 INFO L87 Difference]: Start difference. First operand 195 states and 237 transitions. Second operand 45 states. [2020-10-14 23:55:11,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:11,322 INFO L93 Difference]: Finished difference Result 203 states and 247 transitions. [2020-10-14 23:55:11,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 23:55:11,322 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 194 [2020-10-14 23:55:11,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:11,323 INFO L225 Difference]: With dead ends: 203 [2020-10-14 23:55:11,323 INFO L226 Difference]: Without dead ends: 198 [2020-10-14 23:55:11,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 23:55:11,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-14 23:55:11,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2020-10-14 23:55:11,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-14 23:55:11,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 240 transitions. [2020-10-14 23:55:11,327 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 240 transitions. Word has length 194 [2020-10-14 23:55:11,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:11,328 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 240 transitions. [2020-10-14 23:55:11,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-14 23:55:11,328 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 240 transitions. [2020-10-14 23:55:11,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 23:55:11,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:11,329 INFO L422 BasicCegarLoop]: trace histogram [93, 50, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:11,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2020-10-14 23:55:11,329 INFO L427 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:11,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:11,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1615476734, now seen corresponding path program 92 times [2020-10-14 23:55:11,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:11,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136931763] [2020-10-14 23:55:11,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:11,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:12,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:12,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 23:55:12,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:12,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1311 [2020-10-14 23:55:12,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:12,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-14 23:55:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:55:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 23:55:12,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:13,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:13,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:13,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:13,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:13,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:55:13,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:13,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:13,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:13,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 4350 proven. 1849 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:55:13,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136931763] [2020-10-14 23:55:13,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:13,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-14 23:55:13,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636990125] [2020-10-14 23:55:13,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-14 23:55:13,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:13,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-14 23:55:13,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 23:55:13,767 INFO L87 Difference]: Start difference. First operand 197 states and 240 transitions. Second operand 46 states. [2020-10-14 23:55:14,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:14,015 INFO L93 Difference]: Finished difference Result 205 states and 250 transitions. [2020-10-14 23:55:14,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-14 23:55:14,015 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 196 [2020-10-14 23:55:14,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:14,016 INFO L225 Difference]: With dead ends: 205 [2020-10-14 23:55:14,016 INFO L226 Difference]: Without dead ends: 200 [2020-10-14 23:55:14,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 23:55:14,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-14 23:55:14,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2020-10-14 23:55:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-14 23:55:14,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 243 transitions. [2020-10-14 23:55:14,020 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 243 transitions. Word has length 196 [2020-10-14 23:55:14,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:14,021 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 243 transitions. [2020-10-14 23:55:14,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-14 23:55:14,021 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 243 transitions. [2020-10-14 23:55:14,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 23:55:14,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:14,022 INFO L422 BasicCegarLoop]: trace histogram [94, 50, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:14,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2020-10-14 23:55:14,023 INFO L427 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:14,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:14,023 INFO L82 PathProgramCache]: Analyzing trace with hash -886909571, now seen corresponding path program 93 times [2020-10-14 23:55:14,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:14,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272135375] [2020-10-14 23:55:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:14,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:15,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:15,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 23:55:15,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:15,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1411 [2020-10-14 23:55:15,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:15,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:15,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-14 23:55:15,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:55:15,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 23:55:15,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 23:55:16,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:16,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:16,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:16,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:16,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:16,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:55:16,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:16,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:16,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:16,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:16,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:16,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 4450 proven. 1936 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:55:16,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272135375] [2020-10-14 23:55:16,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:16,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-14 23:55:16,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511851356] [2020-10-14 23:55:16,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-14 23:55:16,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:16,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-14 23:55:16,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 23:55:16,635 INFO L87 Difference]: Start difference. First operand 199 states and 243 transitions. Second operand 47 states. [2020-10-14 23:55:16,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:16,913 INFO L93 Difference]: Finished difference Result 207 states and 253 transitions. [2020-10-14 23:55:16,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 23:55:16,913 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 198 [2020-10-14 23:55:16,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:16,914 INFO L225 Difference]: With dead ends: 207 [2020-10-14 23:55:16,914 INFO L226 Difference]: Without dead ends: 202 [2020-10-14 23:55:16,915 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 [2020-10-14 23:55:16,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-14 23:55:16,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201. [2020-10-14 23:55:16,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-14 23:55:16,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 246 transitions. [2020-10-14 23:55:16,919 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 246 transitions. Word has length 198 [2020-10-14 23:55:16,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:16,920 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 246 transitions. [2020-10-14 23:55:16,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-14 23:55:16,920 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 246 transitions. [2020-10-14 23:55:16,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 23:55:16,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:16,921 INFO L422 BasicCegarLoop]: trace histogram [95, 50, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:16,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2020-10-14 23:55:16,921 INFO L427 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:16,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:16,921 INFO L82 PathProgramCache]: Analyzing trace with hash -813535176, now seen corresponding path program 94 times [2020-10-14 23:55:16,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:16,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94434322] [2020-10-14 23:55:16,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:16,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:18,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:18,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-14 23:55:18,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:18,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1430 [2020-10-14 23:55:18,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:18,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-14 23:55:18,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:55:18,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 23:55:18,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:19,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:19,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:19,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:19,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:19,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:19,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:55:19,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:19,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:19,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 9025 backedges. 4550 proven. 2025 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:55:19,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94434322] [2020-10-14 23:55:19,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:19,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-14 23:55:19,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831183129] [2020-10-14 23:55:19,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-14 23:55:19,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:19,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-14 23:55:19,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 23:55:19,588 INFO L87 Difference]: Start difference. First operand 201 states and 246 transitions. Second operand 48 states. [2020-10-14 23:55:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:19,877 INFO L93 Difference]: Finished difference Result 209 states and 256 transitions. [2020-10-14 23:55:19,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-14 23:55:19,878 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 200 [2020-10-14 23:55:19,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:19,879 INFO L225 Difference]: With dead ends: 209 [2020-10-14 23:55:19,879 INFO L226 Difference]: Without dead ends: 204 [2020-10-14 23:55:19,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 23:55:19,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-14 23:55:19,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2020-10-14 23:55:19,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-14 23:55:19,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 249 transitions. [2020-10-14 23:55:19,884 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 249 transitions. Word has length 200 [2020-10-14 23:55:19,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:19,884 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 249 transitions. [2020-10-14 23:55:19,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-14 23:55:19,884 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 249 transitions. [2020-10-14 23:55:19,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-14 23:55:19,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:19,885 INFO L422 BasicCegarLoop]: trace histogram [96, 50, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:19,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-14 23:55:19,886 INFO L427 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:19,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:19,886 INFO L82 PathProgramCache]: Analyzing trace with hash 979781683, now seen corresponding path program 95 times [2020-10-14 23:55:19,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:19,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826120777] [2020-10-14 23:55:19,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:19,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:21,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:21,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 23:55:21,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:21,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1468 [2020-10-14 23:55:21,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:21,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:21,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-14 23:55:21,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:55:21,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 23:55:21,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:22,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:22,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:22,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:22,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:22,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:22,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:55:22,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:22,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:22,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:22,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:22,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:22,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 4650 proven. 2116 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:55:22,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826120777] [2020-10-14 23:55:22,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:22,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-14 23:55:22,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719831488] [2020-10-14 23:55:22,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-14 23:55:22,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:22,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-14 23:55:22,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 23:55:22,637 INFO L87 Difference]: Start difference. First operand 203 states and 249 transitions. Second operand 49 states. [2020-10-14 23:55:22,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:22,921 INFO L93 Difference]: Finished difference Result 211 states and 259 transitions. [2020-10-14 23:55:22,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-14 23:55:22,922 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 202 [2020-10-14 23:55:22,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:22,923 INFO L225 Difference]: With dead ends: 211 [2020-10-14 23:55:22,923 INFO L226 Difference]: Without dead ends: 206 [2020-10-14 23:55:22,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 23:55:22,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-14 23:55:22,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 205. [2020-10-14 23:55:22,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-14 23:55:22,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 252 transitions. [2020-10-14 23:55:22,927 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 252 transitions. Word has length 202 [2020-10-14 23:55:22,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:22,928 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 252 transitions. [2020-10-14 23:55:22,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-14 23:55:22,928 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 252 transitions. [2020-10-14 23:55:22,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 23:55:22,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:22,929 INFO L422 BasicCegarLoop]: trace histogram [97, 50, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:22,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-14 23:55:22,929 INFO L427 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:22,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:22,930 INFO L82 PathProgramCache]: Analyzing trace with hash 2075397486, now seen corresponding path program 96 times [2020-10-14 23:55:22,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:22,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004444075] [2020-10-14 23:55:22,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:22,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:24,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:24,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 23:55:24,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:24,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1663 [2020-10-14 23:55:24,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:24,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:24,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-14 23:55:24,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:55:24,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 23:55:24,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:25,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:25,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:25,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:25,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:25,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:25,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:25,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:25,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:25,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:25,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:25,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 4750 proven. 2209 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:55:25,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004444075] [2020-10-14 23:55:25,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:25,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-14 23:55:25,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023714332] [2020-10-14 23:55:25,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-14 23:55:25,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:25,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-14 23:55:25,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 23:55:25,941 INFO L87 Difference]: Start difference. First operand 205 states and 252 transitions. Second operand 50 states. [2020-10-14 23:55:26,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:26,262 INFO L93 Difference]: Finished difference Result 213 states and 262 transitions. [2020-10-14 23:55:26,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-14 23:55:26,263 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 204 [2020-10-14 23:55:26,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:26,264 INFO L225 Difference]: With dead ends: 213 [2020-10-14 23:55:26,264 INFO L226 Difference]: Without dead ends: 208 [2020-10-14 23:55:26,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 23:55:26,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-14 23:55:26,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2020-10-14 23:55:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-14 23:55:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 255 transitions. [2020-10-14 23:55:26,268 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 255 transitions. Word has length 204 [2020-10-14 23:55:26,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:26,268 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 255 transitions. [2020-10-14 23:55:26,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-14 23:55:26,268 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 255 transitions. [2020-10-14 23:55:26,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-14 23:55:26,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:26,269 INFO L422 BasicCegarLoop]: trace histogram [98, 50, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:26,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-14 23:55:26,269 INFO L427 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:26,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:26,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1599770647, now seen corresponding path program 97 times [2020-10-14 23:55:26,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:26,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416412339] [2020-10-14 23:55:26,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:26,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:27,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:27,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 23:55:27,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:27,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1540 [2020-10-14 23:55:27,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:27,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:27,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-14 23:55:27,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:55:27,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 23:55:27,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:29,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:29,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:29,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:29,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:29,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:29,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:55:29,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:29,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:29,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 4850 proven. 2304 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:55:29,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416412339] [2020-10-14 23:55:29,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:29,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-14 23:55:29,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845734943] [2020-10-14 23:55:29,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-14 23:55:29,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:29,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-14 23:55:29,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 23:55:29,184 INFO L87 Difference]: Start difference. First operand 207 states and 255 transitions. Second operand 51 states. [2020-10-14 23:55:29,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:29,471 INFO L93 Difference]: Finished difference Result 215 states and 265 transitions. [2020-10-14 23:55:29,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-14 23:55:29,472 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 206 [2020-10-14 23:55:29,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:29,473 INFO L225 Difference]: With dead ends: 215 [2020-10-14 23:55:29,473 INFO L226 Difference]: Without dead ends: 210 [2020-10-14 23:55:29,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 23:55:29,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-14 23:55:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2020-10-14 23:55:29,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-14 23:55:29,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 258 transitions. [2020-10-14 23:55:29,476 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 258 transitions. Word has length 206 [2020-10-14 23:55:29,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:29,476 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 258 transitions. [2020-10-14 23:55:29,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-14 23:55:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 258 transitions. [2020-10-14 23:55:29,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-14 23:55:29,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:29,478 INFO L422 BasicCegarLoop]: trace histogram [99, 50, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:29,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2020-10-14 23:55:29,478 INFO L427 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:29,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:29,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1321738148, now seen corresponding path program 98 times [2020-10-14 23:55:29,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:29,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81186785] [2020-10-14 23:55:29,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:29,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:31,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:31,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 23:55:31,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1638 [2020-10-14 23:55:31,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:31,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-14 23:55:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 23:55:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 23:55:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:32,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:32,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:32,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:32,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:32,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:32,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:55:32,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:32,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:32,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:32,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:32,583 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 4950 proven. 2401 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-10-14 23:55:32,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81186785] [2020-10-14 23:55:32,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:32,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-14 23:55:32,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782855172] [2020-10-14 23:55:32,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-14 23:55:32,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:32,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-14 23:55:32,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 23:55:32,585 INFO L87 Difference]: Start difference. First operand 209 states and 258 transitions. Second operand 52 states. [2020-10-14 23:55:32,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:32,902 INFO L93 Difference]: Finished difference Result 216 states and 266 transitions. [2020-10-14 23:55:32,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-14 23:55:32,903 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 208 [2020-10-14 23:55:32,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:32,904 INFO L225 Difference]: With dead ends: 216 [2020-10-14 23:55:32,904 INFO L226 Difference]: Without dead ends: 211 [2020-10-14 23:55:32,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 23:55:32,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-14 23:55:32,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-10-14 23:55:32,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-14 23:55:32,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 261 transitions. [2020-10-14 23:55:32,910 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 261 transitions. Word has length 208 [2020-10-14 23:55:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:32,910 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 261 transitions. [2020-10-14 23:55:32,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-14 23:55:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 261 transitions. [2020-10-14 23:55:32,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-14 23:55:32,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:32,911 INFO L422 BasicCegarLoop]: trace histogram [100, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:32,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2020-10-14 23:55:32,912 INFO L427 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:32,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:32,912 INFO L82 PathProgramCache]: Analyzing trace with hash -16921441, now seen corresponding path program 99 times [2020-10-14 23:55:32,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:32,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182124989] [2020-10-14 23:55:32,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:32,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:35,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:35,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 23:55:35,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:35,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2733 [2020-10-14 23:55:35,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:35,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:35,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-14 23:55:35,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:35,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-14 23:55:35,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:37,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:37,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:37,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:37,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:37,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:37,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:55:37,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:37,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:37,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:37,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:37,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2020-10-14 23:55:37,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182124989] [2020-10-14 23:55:37,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:37,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-14 23:55:37,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869335901] [2020-10-14 23:55:37,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-14 23:55:37,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:37,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-14 23:55:37,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 23:55:37,878 INFO L87 Difference]: Start difference. First operand 211 states and 261 transitions. Second operand 55 states. [2020-10-14 23:55:40,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:40,130 INFO L93 Difference]: Finished difference Result 2867 states and 4242 transitions. [2020-10-14 23:55:40,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-14 23:55:40,131 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 210 [2020-10-14 23:55:40,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:40,144 INFO L225 Difference]: With dead ends: 2867 [2020-10-14 23:55:40,144 INFO L226 Difference]: Without dead ends: 2862 [2020-10-14 23:55:40,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=111, Invalid=2969, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 23:55:40,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2020-10-14 23:55:40,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 213. [2020-10-14 23:55:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-14 23:55:40,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 264 transitions. [2020-10-14 23:55:40,203 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 264 transitions. Word has length 210 [2020-10-14 23:55:40,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:40,203 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 264 transitions. [2020-10-14 23:55:40,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-14 23:55:40,203 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 264 transitions. [2020-10-14 23:55:40,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 23:55:40,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:40,204 INFO L422 BasicCegarLoop]: trace histogram [101, 51, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:40,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2020-10-14 23:55:40,205 INFO L427 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:40,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:40,205 INFO L82 PathProgramCache]: Analyzing trace with hash 2021402330, now seen corresponding path program 100 times [2020-10-14 23:55:40,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:40,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610699876] [2020-10-14 23:55:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:40,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:42,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:42,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 23:55:42,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:42,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2254 [2020-10-14 23:55:42,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:42,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:42,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-14 23:55:42,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 23:55:42,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 23:55:42,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:43,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:43,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:43,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:43,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:43,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:43,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:55:43,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:43,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:43,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:43,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:43,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:43,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:43,996 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 7651 proven. 0 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2020-10-14 23:55:43,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610699876] [2020-10-14 23:55:43,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:55:43,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2020-10-14 23:55:43,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699438878] [2020-10-14 23:55:43,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-14 23:55:43,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:44,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-14 23:55:44,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 23:55:44,002 INFO L87 Difference]: Start difference. First operand 213 states and 264 transitions. Second operand 52 states. [2020-10-14 23:55:44,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:44,293 INFO L93 Difference]: Finished difference Result 312 states and 412 transitions. [2020-10-14 23:55:44,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-14 23:55:44,293 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 212 [2020-10-14 23:55:44,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:44,294 INFO L225 Difference]: With dead ends: 312 [2020-10-14 23:55:44,294 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 23:55:44,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 23:55:44,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 23:55:44,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 23:55:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 23:55:44,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 23:55:44,296 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 212 [2020-10-14 23:55:44,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:44,296 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 23:55:44,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-14 23:55:44,296 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 23:55:44,296 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 23:55:44,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2020-10-14 23:55:44,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 23:55:45,585 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 1832 DAG size of output: 407 [2020-10-14 23:55:47,508 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 407 DAG size of output: 357 [2020-10-14 23:55:47,514 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 23:55:47,514 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:55:47,514 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:55:47,514 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 23:55:47,514 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 23:55:47,514 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 23:55:47,514 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-14 23:55:47,514 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-14 23:55:47,514 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-14 23:55:47,515 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-14 23:55:47,515 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-10-14 23:55:47,515 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-10-14 23:55:47,515 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-10-14 23:55:47,515 INFO L268 CegarLoopResult]: For program point L17(lines 17 22) no Hoare annotation was computed. [2020-10-14 23:55:47,516 INFO L264 CegarLoopResult]: At program point L17-2(lines 16 23) the Hoare annotation is: (or (and (<= 93 main_~y~0) (<= main_~x~0 93) (<= main_~y~0 93) (<= 93 main_~x~0)) (and (<= main_~y~0 92) (<= 92 main_~x~0) (<= main_~x~0 92) (<= 92 main_~y~0)) (and (<= main_~x~0 77) (<= 77 main_~x~0) (<= 77 main_~y~0) (<= main_~y~0 77)) (and (<= 87 main_~x~0) (<= main_~x~0 87) (<= 87 main_~y~0) (<= main_~y~0 87)) (and (<= main_~y~0 81) (<= main_~x~0 81) (<= 81 main_~y~0) (<= 81 main_~x~0)) (and (<= main_~y~0 63) (<= 63 main_~y~0) (<= main_~x~0 63) (<= 63 main_~x~0)) (and (<= main_~x~0 74) (<= 74 main_~x~0) (<= main_~y~0 74) (<= 74 main_~y~0)) (and (<= 69 main_~y~0) (<= main_~y~0 69) (<= 69 main_~x~0) (<= main_~x~0 69)) (and (<= 95 main_~y~0) (<= 95 main_~x~0) (<= main_~y~0 95) (<= main_~x~0 95)) (and (<= 54 main_~x~0) (<= 54 main_~y~0) (<= main_~x~0 54) (<= main_~y~0 54)) (and (<= main_~x~0 79) (<= 79 main_~y~0) (<= main_~y~0 79) (<= 79 main_~x~0)) (and (<= main_~y~0 99) (<= 99 main_~y~0) (<= main_~x~0 99) (<= 99 main_~x~0)) (and (<= 57 main_~x~0) (<= main_~x~0 57) (<= main_~y~0 57) (<= 57 main_~y~0)) (and (<= 86 main_~x~0) (<= main_~x~0 86) (<= main_~y~0 86) (<= 86 main_~y~0)) (and (<= 53 main_~y~0) (<= 53 main_~x~0) (<= main_~y~0 53) (<= main_~x~0 53)) (and (<= main_~x~0 94) (<= main_~y~0 94) (<= 94 main_~x~0) (<= 94 main_~y~0)) (and (<= 67 main_~y~0) (<= main_~x~0 67) (<= 67 main_~x~0) (<= main_~y~0 67)) (and (<= 56 main_~y~0) (<= main_~y~0 56) (<= 56 main_~x~0) (<= main_~x~0 56)) (and (<= 66 main_~y~0) (<= main_~y~0 66) (<= main_~x~0 66) (<= 66 main_~x~0)) (and (<= main_~x~0 97) (<= 97 main_~y~0) (<= main_~y~0 97) (<= 97 main_~x~0)) (and (<= main_~y~0 83) (<= main_~x~0 83) (<= 83 main_~x~0) (<= 83 main_~y~0)) (and (<= main_~y~0 84) (<= 84 main_~x~0) (<= 84 main_~y~0) (<= main_~x~0 84)) (and (<= 73 main_~x~0) (<= main_~x~0 73) (<= 73 main_~y~0) (<= main_~y~0 73)) (and (<= 70 main_~y~0) (<= main_~y~0 70) (<= 70 main_~x~0) (<= main_~x~0 70)) (and (<= 78 main_~x~0) (<= main_~x~0 78) (<= main_~y~0 78) (<= 78 main_~y~0)) (and (<= 62 main_~y~0) (<= main_~x~0 62) (<= main_~y~0 62) (<= 62 main_~x~0)) (and (<= 58 main_~y~0) (<= 58 main_~x~0) (<= main_~y~0 58) (<= main_~x~0 58)) (and (<= 80 main_~y~0) (<= 80 main_~x~0) (<= main_~x~0 80) (<= main_~y~0 80)) (and (<= main_~y~0 64) (<= 64 main_~y~0) (<= 64 main_~x~0) (<= main_~x~0 64)) (and (<= 76 main_~x~0) (<= 76 main_~y~0) (<= main_~y~0 76) (<= main_~x~0 76)) (and (<= main_~x~0 72) (<= 72 main_~x~0) (<= main_~y~0 72) (<= 72 main_~y~0)) (and (<= 90 main_~y~0) (<= main_~x~0 90) (<= main_~y~0 90) (<= 90 main_~x~0)) (and (<= 68 main_~y~0) (<= 68 main_~x~0) (<= main_~y~0 68) (<= main_~x~0 68)) (and (<= 60 main_~x~0) (<= 60 main_~y~0) (<= main_~x~0 60) (<= main_~y~0 60)) (and (<= 71 main_~y~0) (<= 71 main_~x~0) (<= main_~x~0 71) (<= main_~y~0 71)) (and (<= main_~y~0 100) (<= 100 main_~x~0) (< 99 main_~y~0)) (and (<= 55 main_~y~0) (<= 55 main_~x~0) (<= main_~x~0 55) (<= main_~y~0 55)) (and (<= main_~x~0 82) (<= 82 main_~x~0) (<= 82 main_~y~0) (<= main_~y~0 82)) (and (<= main_~y~0 51) (<= main_~x~0 51) (<= 51 main_~y~0) (<= 51 main_~x~0)) (and (<= main_~y~0 65) (<= 65 main_~y~0) (<= 65 main_~x~0) (<= main_~x~0 65)) (and (<= 96 main_~x~0) (<= main_~x~0 96) (<= main_~y~0 96) (<= 96 main_~y~0)) (and (<= main_~x~0 59) (<= 59 main_~x~0) (<= main_~y~0 59) (<= 59 main_~y~0)) (and (<= 75 main_~x~0) (<= 75 main_~y~0) (<= main_~x~0 75) (<= main_~y~0 75)) (and (<= 52 main_~x~0) (<= 52 main_~y~0) (<= main_~x~0 52) (<= main_~y~0 52)) (and (<= main_~y~0 91) (<= 91 main_~x~0) (<= main_~x~0 91) (<= 91 main_~y~0)) (and (<= main_~x~0 50) (<= 50 main_~y~0) (<= main_~y~0 50)) (and (<= main_~y~0 88) (<= 88 main_~y~0) (<= main_~x~0 88) (<= 88 main_~x~0)) (and (<= main_~x~0 61) (<= main_~y~0 61) (<= 61 main_~y~0) (<= 61 main_~x~0)) (and (<= 89 main_~y~0) (<= 89 main_~x~0) (<= main_~x~0 89) (<= main_~y~0 89)) (and (<= main_~y~0 85) (<= main_~x~0 85) (<= 85 main_~y~0) (<= 85 main_~x~0)) (and (<= 98 main_~y~0) (<= 98 main_~x~0) (<= main_~y~0 98) (<= main_~x~0 98))) [2020-10-14 23:55:47,517 INFO L264 CegarLoopResult]: At program point L16-2(lines 16 23) the Hoare annotation is: (and (<= main_~y~0 100) (< 99 main_~y~0)) [2020-10-14 23:55:47,517 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 26) no Hoare annotation was computed. [2020-10-14 23:55:47,517 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-14 23:55:47,517 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-14 23:55:47,517 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-14 23:55:47,517 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-14 23:55:47,518 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-14 23:55:47,518 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-14 23:55:47,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:55:47 BoogieIcfgContainer [2020-10-14 23:55:47,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:55:47,566 INFO L168 Benchmark]: Toolchain (without parser) took 134627.66 ms. Allocated memory was 147.3 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 104.0 MB in the beginning and 799.2 MB in the end (delta: -695.2 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2020-10-14 23:55:47,572 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 23:55:47,573 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.68 ms. Allocated memory is still 147.3 MB. Free memory was 103.6 MB in the beginning and 94.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:55:47,573 INFO L168 Benchmark]: Boogie Preprocessor took 117.57 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 94.3 MB in the beginning and 182.1 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:55:47,574 INFO L168 Benchmark]: RCFGBuilder took 227.48 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 169.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:55:47,575 INFO L168 Benchmark]: TraceAbstraction took 134040.96 ms. Allocated memory was 203.4 MB in the beginning and 1.2 GB in the end (delta: 996.7 MB). Free memory was 169.7 MB in the beginning and 799.2 MB in the end (delta: -629.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-10-14 23:55:47,577 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 236.68 ms. Allocated memory is still 147.3 MB. Free memory was 103.6 MB in the beginning and 94.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.57 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 94.3 MB in the beginning and 182.1 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 227.48 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 169.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 134040.96 ms. Allocated memory was 203.4 MB in the beginning and 1.2 GB in the end (delta: 996.7 MB). Free memory was 169.7 MB in the beginning and 799.2 MB in the end (delta: -629.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((93 <= y && x <= 93) && y <= 93) && 93 <= x) || (((y <= 92 && 92 <= x) && x <= 92) && 92 <= y)) || (((x <= 77 && 77 <= x) && 77 <= y) && y <= 77)) || (((87 <= x && x <= 87) && 87 <= y) && y <= 87)) || (((y <= 81 && x <= 81) && 81 <= y) && 81 <= x)) || (((y <= 63 && 63 <= y) && x <= 63) && 63 <= x)) || (((x <= 74 && 74 <= x) && y <= 74) && 74 <= y)) || (((69 <= y && y <= 69) && 69 <= x) && x <= 69)) || (((95 <= y && 95 <= x) && y <= 95) && x <= 95)) || (((54 <= x && 54 <= y) && x <= 54) && y <= 54)) || (((x <= 79 && 79 <= y) && y <= 79) && 79 <= x)) || (((y <= 99 && 99 <= y) && x <= 99) && 99 <= x)) || (((57 <= x && x <= 57) && y <= 57) && 57 <= y)) || (((86 <= x && x <= 86) && y <= 86) && 86 <= y)) || (((53 <= y && 53 <= x) && y <= 53) && x <= 53)) || (((x <= 94 && y <= 94) && 94 <= x) && 94 <= y)) || (((67 <= y && x <= 67) && 67 <= x) && y <= 67)) || (((56 <= y && y <= 56) && 56 <= x) && x <= 56)) || (((66 <= y && y <= 66) && x <= 66) && 66 <= x)) || (((x <= 97 && 97 <= y) && y <= 97) && 97 <= x)) || (((y <= 83 && x <= 83) && 83 <= x) && 83 <= y)) || (((y <= 84 && 84 <= x) && 84 <= y) && x <= 84)) || (((73 <= x && x <= 73) && 73 <= y) && y <= 73)) || (((70 <= y && y <= 70) && 70 <= x) && x <= 70)) || (((78 <= x && x <= 78) && y <= 78) && 78 <= y)) || (((62 <= y && x <= 62) && y <= 62) && 62 <= x)) || (((58 <= y && 58 <= x) && y <= 58) && x <= 58)) || (((80 <= y && 80 <= x) && x <= 80) && y <= 80)) || (((y <= 64 && 64 <= y) && 64 <= x) && x <= 64)) || (((76 <= x && 76 <= y) && y <= 76) && x <= 76)) || (((x <= 72 && 72 <= x) && y <= 72) && 72 <= y)) || (((90 <= y && x <= 90) && y <= 90) && 90 <= x)) || (((68 <= y && 68 <= x) && y <= 68) && x <= 68)) || (((60 <= x && 60 <= y) && x <= 60) && y <= 60)) || (((71 <= y && 71 <= x) && x <= 71) && y <= 71)) || ((y <= 100 && 100 <= x) && 99 < y)) || (((55 <= y && 55 <= x) && x <= 55) && y <= 55)) || (((x <= 82 && 82 <= x) && 82 <= y) && y <= 82)) || (((y <= 51 && x <= 51) && 51 <= y) && 51 <= x)) || (((y <= 65 && 65 <= y) && 65 <= x) && x <= 65)) || (((96 <= x && x <= 96) && y <= 96) && 96 <= y)) || (((x <= 59 && 59 <= x) && y <= 59) && 59 <= y)) || (((75 <= x && 75 <= y) && x <= 75) && y <= 75)) || (((52 <= x && 52 <= y) && x <= 52) && y <= 52)) || (((y <= 91 && 91 <= x) && x <= 91) && 91 <= y)) || ((x <= 50 && 50 <= y) && y <= 50)) || (((y <= 88 && 88 <= y) && x <= 88) && 88 <= x)) || (((x <= 61 && y <= 61) && 61 <= y) && 61 <= x)) || (((89 <= y && 89 <= x) && x <= 89) && y <= 89)) || (((y <= 85 && x <= 85) && 85 <= y) && 85 <= x)) || (((98 <= y && 98 <= x) && y <= 98) && x <= 98) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 130.7s, OverallIterations: 102, TraceHistogramMax: 101, AutomataDifference: 15.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1176 SDtfs, 1328 SDslu, 21079 SDs, 0 SdLazy, 11319 SolverSat, 2143 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3062 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 2654 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=213occurred in iteration=101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 102 MinimizatonAttempts, 2698 StatesRemovedByMinimization, 50 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 108 PreInvPairs, 210 NumberOfFragments, 670 HoareAnnotationTreeSize, 108 FomulaSimplifications, 13400 FormulaSimplificationTreeSizeReduction, 1.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 250 FormulaSimplificationTreeSizeReductionInter, 1.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 111.7s InterpolantComputationTime, 11322 NumberOfCodeBlocks, 11322 NumberOfCodeBlocksAsserted, 102 NumberOfCheckSat, 11220 ConstructedInterpolants, 0 QuantifiedInterpolants, 3155806 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 102 InterpolantComputations, 3 PerfectInterpolantSequences, 259026/348551 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...