/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-industry-pattern/nested-3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:50:45,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:50:45,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:50:45,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:50:45,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:50:45,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:50:45,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:50:45,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:50:45,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:50:45,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:50:45,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:50:45,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:50:45,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:50:45,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:50:45,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:50:45,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:50:45,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:50:45,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:50:45,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:50:45,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:50:45,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:50:45,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:50:45,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:50:45,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:50:45,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:50:45,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:50:45,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:50:45,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:50:45,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:50:45,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:50:45,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:50:45,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:50:45,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:50:45,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:50:45,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:50:45,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:50:45,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:50:45,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:50:45,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:50:45,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:50:45,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:50:45,768 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 23:50:45,789 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:50:45,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:50:45,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:50:45,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:50:45,791 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:50:45,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:50:45,791 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:50:45,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:50:45,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:50:45,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:50:45,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:50:45,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:50:45,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:50:45,793 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:50:45,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:50:45,793 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:50:45,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:50:45,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:50:45,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:50:45,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:50:45,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:50:45,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:50:45,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:50:45,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:50:45,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:50:45,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:50:45,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:50:45,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:50:45,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:50:45,796 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 23:50:46,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:50:46,114 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:50:46,117 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:50:46,119 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:50:46,120 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:50:46,120 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/nested-3.c [2020-10-14 23:50:46,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4761b3d1d/87f64df0b4fc4416b7d9bed8846e9005/FLAG3358432ac [2020-10-14 23:50:46,623 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:50:46,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/nested-3.c [2020-10-14 23:50:46,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4761b3d1d/87f64df0b4fc4416b7d9bed8846e9005/FLAG3358432ac [2020-10-14 23:50:47,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4761b3d1d/87f64df0b4fc4416b7d9bed8846e9005 [2020-10-14 23:50:47,035 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:50:47,036 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:50:47,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:50:47,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:50:47,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:50:47,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:50:47" (1/1) ... [2020-10-14 23:50:47,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5adf6174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:47, skipping insertion in model container [2020-10-14 23:50:47,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:50:47" (1/1) ... [2020-10-14 23:50:47,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:50:47,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:50:47,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:50:47,254 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:50:47,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:50:47,286 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:50:47,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:47 WrapperNode [2020-10-14 23:50:47,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:50:47,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:50:47,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:50:47,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:50:47,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:47" (1/1) ... [2020-10-14 23:50:47,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:47" (1/1) ... [2020-10-14 23:50:47,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:47" (1/1) ... [2020-10-14 23:50:47,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:47" (1/1) ... [2020-10-14 23:50:47,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:47" (1/1) ... [2020-10-14 23:50:47,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:47" (1/1) ... [2020-10-14 23:50:47,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:47" (1/1) ... [2020-10-14 23:50:47,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:50:47,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:50:47,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:50:47,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:50:47,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:47" (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 23:50:47,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:50:47,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:50:47,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 23:50:47,472 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:50:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:50:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:50:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 23:50:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:50:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:50:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:50:47,691 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:50:47,691 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 23:50:47,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:50:47 BoogieIcfgContainer [2020-10-14 23:50:47,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:50:47,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:50:47,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:50:47,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:50:47,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:50:47" (1/3) ... [2020-10-14 23:50:47,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e315010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:50:47, skipping insertion in model container [2020-10-14 23:50:47,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:50:47" (2/3) ... [2020-10-14 23:50:47,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e315010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:50:47, skipping insertion in model container [2020-10-14 23:50:47,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:50:47" (3/3) ... [2020-10-14 23:50:47,703 INFO L109 eAbstractionObserver]: Analyzing ICFG nested-3.c [2020-10-14 23:50:47,714 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:50:47,721 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:50:47,735 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:50:47,760 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:50:47,760 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:50:47,760 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:50:47,761 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:50:47,761 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:50:47,761 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:50:47,761 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:50:47,761 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:50:47,780 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-14 23:50:47,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 23:50:47,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:47,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:47,789 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:47,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:47,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1419324422, now seen corresponding path program 1 times [2020-10-14 23:50:47,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:47,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954910953] [2020-10-14 23:50:47,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:47,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:47,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:48,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:48,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:48,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:48,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:50:48,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:50:48,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-14 23:50:48,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:48,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:50:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:50:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 23:50:48,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:50:48,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:48,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:48,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:48,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:48,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:48,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:50:48,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:48,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:48,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:48,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:48,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:48,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:50:48,274 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 23:50:48,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954910953] [2020-10-14 23:50:48,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:50:48,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:50:48,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748328133] [2020-10-14 23:50:48,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:50:48,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:48,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:50:48,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:50:48,355 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2020-10-14 23:50:48,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:48,480 INFO L93 Difference]: Finished difference Result 43 states and 68 transitions. [2020-10-14 23:50:48,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:50:48,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-14 23:50:48,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:48,493 INFO L225 Difference]: With dead ends: 43 [2020-10-14 23:50:48,493 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 23:50:48,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:50:48,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 23:50:48,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-14 23:50:48,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-14 23:50:48,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2020-10-14 23:50:48,538 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 14 [2020-10-14 23:50:48,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:48,539 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2020-10-14 23:50:48,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:50:48,539 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2020-10-14 23:50:48,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 23:50:48,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:48,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:48,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:50:48,541 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:48,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:48,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1478429766, now seen corresponding path program 1 times [2020-10-14 23:50:48,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:48,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128101352] [2020-10-14 23:50:48,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:48,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:48,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:48,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:50:48,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:48,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 23:50:48,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:48,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:50:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:50:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:50:48,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:48,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:48,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:48,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:48,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:48,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:48,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:50:48,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:48,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:48,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:48,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:48,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:48,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:48,647 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 23:50:48,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128101352] [2020-10-14 23:50:48,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:50:48,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:50:48,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759039362] [2020-10-14 23:50:48,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:50:48,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:48,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:50:48,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:50:48,660 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand 4 states. [2020-10-14 23:50:48,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:48,729 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2020-10-14 23:50:48,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:50:48,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-14 23:50:48,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:48,731 INFO L225 Difference]: With dead ends: 47 [2020-10-14 23:50:48,731 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 23:50:48,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:50:48,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 23:50:48,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-10-14 23:50:48,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-14 23:50:48,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-10-14 23:50:48,739 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 14 [2020-10-14 23:50:48,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:48,740 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-10-14 23:50:48,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:50:48,740 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-10-14 23:50:48,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:50:48,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:48,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:48,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:50:48,742 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:48,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:48,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1519544262, now seen corresponding path program 1 times [2020-10-14 23:50:48,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:48,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697758435] [2020-10-14 23:50:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:48,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:48,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:48,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:48,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:48,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:49,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:49,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:50:49,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:50:49,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-14 23:50:49,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:49,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:50:49,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:50:49,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:50:49,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:49,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:49,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:49,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:49,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:49,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:49,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:50:49,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:49,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:49,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:49,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:49,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:49,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:50:49,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697758435] [2020-10-14 23:50:49,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:50:49,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:50:49,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248968361] [2020-10-14 23:50:49,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:50:49,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:49,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:50:49,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:50:49,208 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 6 states. [2020-10-14 23:50:49,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:49,366 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2020-10-14 23:50:49,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:50:49,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-14 23:50:49,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:49,370 INFO L225 Difference]: With dead ends: 69 [2020-10-14 23:50:49,370 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 23:50:49,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:50:49,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 23:50:49,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-10-14 23:50:49,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 23:50:49,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2020-10-14 23:50:49,381 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 17 [2020-10-14 23:50:49,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:49,382 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-10-14 23:50:49,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:50:49,382 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2020-10-14 23:50:49,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:50:49,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:49,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:49,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:50:49,384 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:49,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:49,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1460438918, now seen corresponding path program 1 times [2020-10-14 23:50:49,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:49,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263361384] [2020-10-14 23:50:49,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:49,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:49,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:49,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:49,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:49,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:50:49,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:50:49,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 23:50:49,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:49,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:50:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:50:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:50:49,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:49,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:49,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:49,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:49,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:49,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:49,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:50:49,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:49,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:49,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:49,643 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 23:50:49,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263361384] [2020-10-14 23:50:49,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:50:49,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 23:50:49,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832935010] [2020-10-14 23:50:49,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:50:49,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:49,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:50:49,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:50:49,646 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand 9 states. [2020-10-14 23:50:49,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:49,773 INFO L93 Difference]: Finished difference Result 71 states and 91 transitions. [2020-10-14 23:50:49,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:50:49,774 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-14 23:50:49,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:49,776 INFO L225 Difference]: With dead ends: 71 [2020-10-14 23:50:49,776 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 23:50:49,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:50:49,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 23:50:49,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-10-14 23:50:49,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 23:50:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-10-14 23:50:49,789 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 17 [2020-10-14 23:50:49,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:49,789 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-10-14 23:50:49,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:50:49,790 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-10-14 23:50:49,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:50:49,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:49,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:49,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:50:49,791 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:49,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:49,792 INFO L82 PathProgramCache]: Analyzing trace with hash -190014908, now seen corresponding path program 1 times [2020-10-14 23:50:49,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:49,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777767911] [2020-10-14 23:50:49,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:49,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:49,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:49,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:49,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:49,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:49,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:50,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:50,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:50:50,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:50:50,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-14 23:50:50,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:50,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:50:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:50:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:50:50,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:50,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:50,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:50,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:50,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:50,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:50,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:50:50,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:50,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:50,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:50,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:50,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:50,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:50:50,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777767911] [2020-10-14 23:50:50,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:50:50,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:50:50,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915807084] [2020-10-14 23:50:50,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:50:50,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:50,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:50:50,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:50:50,092 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand 6 states. [2020-10-14 23:50:50,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:50,215 INFO L93 Difference]: Finished difference Result 137 states and 186 transitions. [2020-10-14 23:50:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:50:50,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-14 23:50:50,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:50,218 INFO L225 Difference]: With dead ends: 137 [2020-10-14 23:50:50,220 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 23:50:50,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:50:50,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 23:50:50,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2020-10-14 23:50:50,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-14 23:50:50,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2020-10-14 23:50:50,248 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 20 [2020-10-14 23:50:50,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:50,248 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2020-10-14 23:50:50,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:50:50,249 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2020-10-14 23:50:50,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:50:50,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:50,251 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:50,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:50:50,251 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:50,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:50,252 INFO L82 PathProgramCache]: Analyzing trace with hash -627599044, now seen corresponding path program 2 times [2020-10-14 23:50:50,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:50,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077699443] [2020-10-14 23:50:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:50,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:50,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:50,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:50,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:50,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:50,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:50,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:50,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:50,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:50,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:50,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:50,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:50,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:50,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:51,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:50:51,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 23:50:51,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 963 [2020-10-14 23:50:51,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:51,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:51,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:50:51,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:50:51,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:50:51,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:51,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:51,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:51,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:51,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:51,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:50:51,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:51,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:51,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:51,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:51,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:51,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:50:51,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077699443] [2020-10-14 23:50:51,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:50:51,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:50:51,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351157467] [2020-10-14 23:50:51,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:50:51,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:51,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:50:51,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:50:51,284 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand 7 states. [2020-10-14 23:50:51,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:51,482 INFO L93 Difference]: Finished difference Result 198 states and 253 transitions. [2020-10-14 23:50:51,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:50:51,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-14 23:50:51,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:51,484 INFO L225 Difference]: With dead ends: 198 [2020-10-14 23:50:51,484 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 23:50:51,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:50:51,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 23:50:51,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 72. [2020-10-14 23:50:51,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 23:50:51,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2020-10-14 23:50:51,495 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 23 [2020-10-14 23:50:51,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:51,496 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2020-10-14 23:50:51,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:50:51,496 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2020-10-14 23:50:51,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:50:51,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:51,497 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:51,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:50:51,497 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:51,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:51,498 INFO L82 PathProgramCache]: Analyzing trace with hash -369433606, now seen corresponding path program 3 times [2020-10-14 23:50:51,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:51,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095939707] [2020-10-14 23:50:51,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:51,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:51,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:50:51,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:50:51,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 23:50:51,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:51,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:50:51,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:50:51,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:50:51,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:51,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:51,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:51,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:51,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:51,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:50:51,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:51,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:51,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:50:51,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095939707] [2020-10-14 23:50:51,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:50:51,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:50:51,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450751352] [2020-10-14 23:50:51,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:50:51,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:51,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:50:51,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:50:51,741 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand 7 states. [2020-10-14 23:50:51,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:51,828 INFO L93 Difference]: Finished difference Result 162 states and 213 transitions. [2020-10-14 23:50:51,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:50:51,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-14 23:50:51,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:51,829 INFO L225 Difference]: With dead ends: 162 [2020-10-14 23:50:51,830 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 23:50:51,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:50:51,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 23:50:51,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2020-10-14 23:50:51,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 23:50:51,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2020-10-14 23:50:51,840 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 23 [2020-10-14 23:50:51,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:51,841 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2020-10-14 23:50:51,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:50:51,841 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2020-10-14 23:50:51,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:50:51,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:51,842 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:51,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:50:51,842 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:51,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:51,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1544252358, now seen corresponding path program 4 times [2020-10-14 23:50:51,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:51,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080640873] [2020-10-14 23:50:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:51,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:52,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:52,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:52,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:52,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:52,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:52,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:53,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:50:53,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 23:50:53,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1304 [2020-10-14 23:50:53,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:53,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:53,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:50:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:50:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:50:53,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:50:53,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:53,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:53,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:53,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:53,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:50:53,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:53,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:53,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:53,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:53,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:53,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:50:53,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080640873] [2020-10-14 23:50:53,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:50:53,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:50:53,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820769868] [2020-10-14 23:50:53,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:50:53,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:53,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:50:53,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:50:53,220 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand 8 states. [2020-10-14 23:50:53,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:53,336 INFO L93 Difference]: Finished difference Result 190 states and 249 transitions. [2020-10-14 23:50:53,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:50:53,338 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-14 23:50:53,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:53,339 INFO L225 Difference]: With dead ends: 190 [2020-10-14 23:50:53,340 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 23:50:53,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:50:53,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 23:50:53,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 100. [2020-10-14 23:50:53,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 23:50:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 127 transitions. [2020-10-14 23:50:53,376 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 127 transitions. Word has length 26 [2020-10-14 23:50:53,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:53,377 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 127 transitions. [2020-10-14 23:50:53,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:50:53,379 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 127 transitions. [2020-10-14 23:50:53,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:50:53,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:53,380 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:53,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:50:53,380 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:53,380 INFO L82 PathProgramCache]: Analyzing trace with hash 766918778, now seen corresponding path program 5 times [2020-10-14 23:50:53,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:53,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838581183] [2020-10-14 23:50:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:53,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:53,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:54,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:54,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:54,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:54,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:54,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:55,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:55,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:56,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:56,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:50:56,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-14 23:50:56,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2937 [2020-10-14 23:50:56,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:56,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:56,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:50:56,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:50:56,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:50:56,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:56,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:56,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:56,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:56,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:56,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:56,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:50:56,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:56,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:56,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:56,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:56,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:56,385 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:50:56,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838581183] [2020-10-14 23:50:56,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:50:56,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:50:56,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818643445] [2020-10-14 23:50:56,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:50:56,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:56,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:50:56,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:50:56,392 INFO L87 Difference]: Start difference. First operand 100 states and 127 transitions. Second operand 8 states. [2020-10-14 23:50:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:56,670 INFO L93 Difference]: Finished difference Result 242 states and 309 transitions. [2020-10-14 23:50:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:50:56,670 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-14 23:50:56,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:56,672 INFO L225 Difference]: With dead ends: 242 [2020-10-14 23:50:56,672 INFO L226 Difference]: Without dead ends: 146 [2020-10-14 23:50:56,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:50:56,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-14 23:50:56,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 127. [2020-10-14 23:50:56,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-14 23:50:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 162 transitions. [2020-10-14 23:50:56,684 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 162 transitions. Word has length 29 [2020-10-14 23:50:56,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:56,684 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 162 transitions. [2020-10-14 23:50:56,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:50:56,684 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 162 transitions. [2020-10-14 23:50:56,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:50:56,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:56,686 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:56,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:50:56,686 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:56,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:56,686 INFO L82 PathProgramCache]: Analyzing trace with hash -455686598, now seen corresponding path program 1 times [2020-10-14 23:50:56,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:56,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995379578] [2020-10-14 23:50:56,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:56,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:56,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:56,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:56,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:56,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:56,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:56,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:56,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:56,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:57,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:57,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:57,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:50:57,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:50:57,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-10-14 23:50:57,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:57,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:50:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:50:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:50:57,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:57,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:57,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:57,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:57,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:57,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:57,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:50:57,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:57,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:57,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:57,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:57,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:57,466 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:50:57,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995379578] [2020-10-14 23:50:57,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:50:57,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:50:57,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444474893] [2020-10-14 23:50:57,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:50:57,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:57,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:50:57,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:50:57,469 INFO L87 Difference]: Start difference. First operand 127 states and 162 transitions. Second operand 9 states. [2020-10-14 23:50:57,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:57,738 INFO L93 Difference]: Finished difference Result 313 states and 400 transitions. [2020-10-14 23:50:57,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:50:57,738 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-14 23:50:57,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:57,740 INFO L225 Difference]: With dead ends: 313 [2020-10-14 23:50:57,740 INFO L226 Difference]: Without dead ends: 160 [2020-10-14 23:50:57,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:50:57,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-14 23:50:57,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 90. [2020-10-14 23:50:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-14 23:50:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 113 transitions. [2020-10-14 23:50:57,749 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 113 transitions. Word has length 29 [2020-10-14 23:50:57,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:57,749 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 113 transitions. [2020-10-14 23:50:57,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:50:57,750 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 113 transitions. [2020-10-14 23:50:57,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:50:57,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:57,751 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:57,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:50:57,751 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:57,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:57,752 INFO L82 PathProgramCache]: Analyzing trace with hash -197521160, now seen corresponding path program 2 times [2020-10-14 23:50:57,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:57,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262089958] [2020-10-14 23:50:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:57,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:57,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:57,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:57,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:57,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:57,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:57,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:50:57,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:50:57,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 23:50:57,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:57,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:50:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:50:57,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:50:57,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:58,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:58,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:58,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:58,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:58,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:58,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:50:58,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:58,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:58,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:58,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:50:58,007 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:50:58,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262089958] [2020-10-14 23:50:58,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:50:58,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:50:58,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738608971] [2020-10-14 23:50:58,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:50:58,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:58,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:50:58,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:50:58,009 INFO L87 Difference]: Start difference. First operand 90 states and 113 transitions. Second operand 9 states. [2020-10-14 23:50:58,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:58,112 INFO L93 Difference]: Finished difference Result 198 states and 257 transitions. [2020-10-14 23:50:58,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:50:58,113 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-14 23:50:58,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:58,114 INFO L225 Difference]: With dead ends: 198 [2020-10-14 23:50:58,114 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 23:50:58,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:50:58,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 23:50:58,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2020-10-14 23:50:58,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 23:50:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 129 transitions. [2020-10-14 23:50:58,122 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 129 transitions. Word has length 29 [2020-10-14 23:50:58,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:58,122 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 129 transitions. [2020-10-14 23:50:58,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:50:58,122 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 129 transitions. [2020-10-14 23:50:58,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:50:58,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:58,124 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:58,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:50:58,124 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:58,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:58,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1530853052, now seen corresponding path program 3 times [2020-10-14 23:50:58,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:58,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758117504] [2020-10-14 23:50:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:58,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:58,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:58,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:58,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:58,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:58,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:58,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:58,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:58,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:58,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:58,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:58,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:58,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:50:58,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:50:58,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-10-14 23:50:58,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:58,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:50:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:50:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:50:58,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:58,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:58,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:58,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:58,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:58,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:58,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:50:58,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:58,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:58,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:58,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:58,810 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:50:58,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758117504] [2020-10-14 23:50:58,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:50:58,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:50:58,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526195990] [2020-10-14 23:50:58,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:50:58,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:58,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:50:58,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:50:58,813 INFO L87 Difference]: Start difference. First operand 103 states and 129 transitions. Second operand 10 states. [2020-10-14 23:50:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:59,189 INFO L93 Difference]: Finished difference Result 249 states and 314 transitions. [2020-10-14 23:50:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:50:59,190 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-14 23:50:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:59,191 INFO L225 Difference]: With dead ends: 249 [2020-10-14 23:50:59,192 INFO L226 Difference]: Without dead ends: 151 [2020-10-14 23:50:59,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:50:59,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-14 23:50:59,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 132. [2020-10-14 23:50:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-14 23:50:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 168 transitions. [2020-10-14 23:50:59,204 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 168 transitions. Word has length 32 [2020-10-14 23:50:59,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:59,204 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 168 transitions. [2020-10-14 23:50:59,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:50:59,204 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 168 transitions. [2020-10-14 23:50:59,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:50:59,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:59,207 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:59,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:50:59,207 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:59,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:59,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1272687614, now seen corresponding path program 4 times [2020-10-14 23:50:59,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:59,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591458322] [2020-10-14 23:50:59,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:59,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:59,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:59,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:59,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:59,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:59,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:59,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:50:59,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:50:59,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 23:50:59,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:59,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:50:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:50:59,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:50:59,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:59,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:59,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:59,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:59,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:59,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:59,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:50:59,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:59,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:59,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:50:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:50:59,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591458322] [2020-10-14 23:50:59,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:50:59,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:50:59,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900355274] [2020-10-14 23:50:59,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:50:59,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:59,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:50:59,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:50:59,518 INFO L87 Difference]: Start difference. First operand 132 states and 168 transitions. Second operand 10 states. [2020-10-14 23:50:59,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:59,636 INFO L93 Difference]: Finished difference Result 292 states and 383 transitions. [2020-10-14 23:50:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:50:59,637 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-14 23:50:59,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:59,638 INFO L225 Difference]: With dead ends: 292 [2020-10-14 23:50:59,639 INFO L226 Difference]: Without dead ends: 166 [2020-10-14 23:50:59,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:50:59,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-14 23:50:59,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 151. [2020-10-14 23:50:59,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-14 23:50:59,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 192 transitions. [2020-10-14 23:50:59,654 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 192 transitions. Word has length 32 [2020-10-14 23:50:59,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:59,654 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 192 transitions. [2020-10-14 23:50:59,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:50:59,655 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 192 transitions. [2020-10-14 23:50:59,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:50:59,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:59,658 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:59,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:50:59,658 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:59,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:59,659 INFO L82 PathProgramCache]: Analyzing trace with hash 51409402, now seen corresponding path program 5 times [2020-10-14 23:50:59,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:59,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974449809] [2020-10-14 23:50:59,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:59,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:59,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:59,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:59,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:59,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:59,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:59,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:59,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:59,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:59,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:00,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:00,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:00,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:51:00,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:51:00,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-10-14 23:51:00,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:00,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:51:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:51:00,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:00,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:00,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:00,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:00,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:00,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:00,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:00,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:00,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:00,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:00,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:51:00,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974449809] [2020-10-14 23:51:00,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:00,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:51:00,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779340265] [2020-10-14 23:51:00,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:51:00,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:00,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:51:00,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:51:00,494 INFO L87 Difference]: Start difference. First operand 151 states and 192 transitions. Second operand 11 states. [2020-10-14 23:51:00,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:00,796 INFO L93 Difference]: Finished difference Result 373 states and 474 transitions. [2020-10-14 23:51:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:51:00,796 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-14 23:51:00,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:00,798 INFO L225 Difference]: With dead ends: 373 [2020-10-14 23:51:00,798 INFO L226 Difference]: Without dead ends: 190 [2020-10-14 23:51:00,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:51:00,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-14 23:51:00,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 108. [2020-10-14 23:51:00,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-14 23:51:00,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 135 transitions. [2020-10-14 23:51:00,808 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 135 transitions. Word has length 35 [2020-10-14 23:51:00,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:00,809 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 135 transitions. [2020-10-14 23:51:00,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:51:00,809 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 135 transitions. [2020-10-14 23:51:00,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:51:00,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:00,810 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:00,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:51:00,810 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:00,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:00,810 INFO L82 PathProgramCache]: Analyzing trace with hash 309574840, now seen corresponding path program 6 times [2020-10-14 23:51:00,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:00,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733684139] [2020-10-14 23:51:00,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:00,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:00,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:00,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:00,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:00,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:01,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:01,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:51:01,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:51:01,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-14 23:51:01,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:01,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:51:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:51:01,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:01,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:01,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:01,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:01,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:01,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:01,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:01,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:01,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:01,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:01,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:01,157 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:51:01,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733684139] [2020-10-14 23:51:01,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:01,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:51:01,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020233152] [2020-10-14 23:51:01,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:51:01,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:01,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:51:01,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:51:01,159 INFO L87 Difference]: Start difference. First operand 108 states and 135 transitions. Second operand 11 states. [2020-10-14 23:51:01,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:01,281 INFO L93 Difference]: Finished difference Result 234 states and 301 transitions. [2020-10-14 23:51:01,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:51:01,282 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-14 23:51:01,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:01,283 INFO L225 Difference]: With dead ends: 234 [2020-10-14 23:51:01,283 INFO L226 Difference]: Without dead ends: 132 [2020-10-14 23:51:01,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:51:01,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-14 23:51:01,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 121. [2020-10-14 23:51:01,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 23:51:01,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 151 transitions. [2020-10-14 23:51:01,295 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 151 transitions. Word has length 35 [2020-10-14 23:51:01,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:01,295 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 151 transitions. [2020-10-14 23:51:01,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:51:01,295 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 151 transitions. [2020-10-14 23:51:01,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:51:01,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:01,297 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:01,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:51:01,298 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:01,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:01,298 INFO L82 PathProgramCache]: Analyzing trace with hash -33897084, now seen corresponding path program 7 times [2020-10-14 23:51:01,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:01,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255010376] [2020-10-14 23:51:01,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:01,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:01,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:01,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:01,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:01,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:01,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:01,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:01,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:01,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:01,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:01,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:02,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:51:02,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:51:02,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 788 [2020-10-14 23:51:02,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:02,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:02,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:51:02,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:02,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:51:02,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:02,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:02,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:02,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:02,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:02,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:02,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:02,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:02,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:02,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:02,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:02,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:02,177 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:51:02,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255010376] [2020-10-14 23:51:02,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:02,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:51:02,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48817174] [2020-10-14 23:51:02,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:51:02,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:02,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:51:02,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:51:02,179 INFO L87 Difference]: Start difference. First operand 121 states and 151 transitions. Second operand 12 states. [2020-10-14 23:51:02,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:02,270 INFO L93 Difference]: Finished difference Result 262 states and 337 transitions. [2020-10-14 23:51:02,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:51:02,271 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-14 23:51:02,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:02,272 INFO L225 Difference]: With dead ends: 262 [2020-10-14 23:51:02,272 INFO L226 Difference]: Without dead ends: 147 [2020-10-14 23:51:02,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:51:02,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-14 23:51:02,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 136. [2020-10-14 23:51:02,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-14 23:51:02,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 171 transitions. [2020-10-14 23:51:02,281 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 171 transitions. Word has length 38 [2020-10-14 23:51:02,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:02,282 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 171 transitions. [2020-10-14 23:51:02,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:51:02,282 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 171 transitions. [2020-10-14 23:51:02,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:51:02,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:02,283 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:02,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:51:02,283 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:02,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:02,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1793885896, now seen corresponding path program 8 times [2020-10-14 23:51:02,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:02,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996048211] [2020-10-14 23:51:02,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:02,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:02,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:03,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:03,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:04,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:04,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:51:04,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:51:04,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2473 [2020-10-14 23:51:04,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:04,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:51:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:51:04,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:04,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:04,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:04,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:04,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:04,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:04,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:51:04,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:04,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:04,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:04,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:04,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:04,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:51:04,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996048211] [2020-10-14 23:51:04,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:04,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:51:04,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717764391] [2020-10-14 23:51:04,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:51:04,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:04,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:51:04,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:51:04,849 INFO L87 Difference]: Start difference. First operand 136 states and 171 transitions. Second operand 12 states. [2020-10-14 23:51:05,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:05,321 INFO L93 Difference]: Finished difference Result 330 states and 415 transitions. [2020-10-14 23:51:05,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 23:51:05,324 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-14 23:51:05,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:05,327 INFO L225 Difference]: With dead ends: 330 [2020-10-14 23:51:05,327 INFO L226 Difference]: Without dead ends: 198 [2020-10-14 23:51:05,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=330, Invalid=860, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:51:05,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-14 23:51:05,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 175. [2020-10-14 23:51:05,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-14 23:51:05,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 222 transitions. [2020-10-14 23:51:05,343 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 222 transitions. Word has length 41 [2020-10-14 23:51:05,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:05,344 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 222 transitions. [2020-10-14 23:51:05,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:51:05,344 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 222 transitions. [2020-10-14 23:51:05,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:51:05,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:05,345 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:05,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:51:05,345 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:05,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:05,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1221217722, now seen corresponding path program 9 times [2020-10-14 23:51:05,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:05,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20565029] [2020-10-14 23:51:05,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:05,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:05,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:05,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:05,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:05,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:05,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:05,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:05,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:05,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:05,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:05,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:06,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:51:06,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:51:06,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 722 [2020-10-14 23:51:06,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:06,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:51:06,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:06,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:51:06,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:06,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:06,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:06,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:06,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:06,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:51:06,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:06,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:06,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:06,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:06,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:06,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:51:06,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20565029] [2020-10-14 23:51:06,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:06,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:51:06,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810792101] [2020-10-14 23:51:06,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:51:06,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:06,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:51:06,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:51:06,200 INFO L87 Difference]: Start difference. First operand 175 states and 222 transitions. Second operand 13 states. [2020-10-14 23:51:06,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:06,323 INFO L93 Difference]: Finished difference Result 380 states and 495 transitions. [2020-10-14 23:51:06,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:51:06,324 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-14 23:51:06,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:06,325 INFO L225 Difference]: With dead ends: 380 [2020-10-14 23:51:06,326 INFO L226 Difference]: Without dead ends: 211 [2020-10-14 23:51:06,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:51:06,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-14 23:51:06,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 196. [2020-10-14 23:51:06,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-14 23:51:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 250 transitions. [2020-10-14 23:51:06,339 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 250 transitions. Word has length 41 [2020-10-14 23:51:06,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:06,340 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 250 transitions. [2020-10-14 23:51:06,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:51:06,340 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 250 transitions. [2020-10-14 23:51:06,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:51:06,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:06,341 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:06,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:51:06,341 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:06,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:06,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1640987970, now seen corresponding path program 10 times [2020-10-14 23:51:06,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:06,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834921479] [2020-10-14 23:51:06,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:06,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:06,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:07,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:07,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:07,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:07,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:08,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:08,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:51:08,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:51:08,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1927 [2020-10-14 23:51:08,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:08,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:51:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:51:08,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:08,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:08,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:08,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:08,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:08,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:08,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:51:08,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:08,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:08,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:08,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:08,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:08,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:08,381 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:51:08,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834921479] [2020-10-14 23:51:08,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:08,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:51:08,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574350899] [2020-10-14 23:51:08,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:51:08,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:08,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:51:08,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:51:08,383 INFO L87 Difference]: Start difference. First operand 196 states and 250 transitions. Second operand 13 states. [2020-10-14 23:51:08,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:08,956 INFO L93 Difference]: Finished difference Result 457 states and 581 transitions. [2020-10-14 23:51:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 23:51:08,959 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-10-14 23:51:08,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:08,961 INFO L225 Difference]: With dead ends: 457 [2020-10-14 23:51:08,961 INFO L226 Difference]: Without dead ends: 265 [2020-10-14 23:51:08,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=411, Invalid=1071, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:51:08,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-14 23:51:08,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 190. [2020-10-14 23:51:08,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-14 23:51:08,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 241 transitions. [2020-10-14 23:51:08,974 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 241 transitions. Word has length 44 [2020-10-14 23:51:08,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:08,974 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 241 transitions. [2020-10-14 23:51:08,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:51:08,974 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 241 transitions. [2020-10-14 23:51:08,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:51:08,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:08,975 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:08,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:51:08,975 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:08,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:08,976 INFO L82 PathProgramCache]: Analyzing trace with hash 361124292, now seen corresponding path program 11 times [2020-10-14 23:51:08,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:08,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269884778] [2020-10-14 23:51:08,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:08,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:08,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:08,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:09,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:09,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:09,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:09,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:09,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:09,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:09,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:09,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:09,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:09,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:51:09,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:51:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-14 23:51:09,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:09,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:09,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:51:09,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:09,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:51:09,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:09,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:09,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:09,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:09,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:09,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:09,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:09,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:09,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:09,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:09,617 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:51:09,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269884778] [2020-10-14 23:51:09,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:09,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:51:09,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001807483] [2020-10-14 23:51:09,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:51:09,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:09,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:51:09,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:51:09,619 INFO L87 Difference]: Start difference. First operand 190 states and 241 transitions. Second operand 14 states. [2020-10-14 23:51:10,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:10,232 INFO L93 Difference]: Finished difference Result 442 states and 561 transitions. [2020-10-14 23:51:10,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 23:51:10,232 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-10-14 23:51:10,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:10,234 INFO L225 Difference]: With dead ends: 442 [2020-10-14 23:51:10,234 INFO L226 Difference]: Without dead ends: 257 [2020-10-14 23:51:10,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=501, Invalid=1305, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:51:10,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-14 23:51:10,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 186. [2020-10-14 23:51:10,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-14 23:51:10,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 236 transitions. [2020-10-14 23:51:10,248 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 236 transitions. Word has length 44 [2020-10-14 23:51:10,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:10,248 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 236 transitions. [2020-10-14 23:51:10,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:51:10,248 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 236 transitions. [2020-10-14 23:51:10,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:51:10,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:10,249 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:10,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:51:10,249 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:10,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:10,250 INFO L82 PathProgramCache]: Analyzing trace with hash 619289730, now seen corresponding path program 12 times [2020-10-14 23:51:10,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:10,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629720244] [2020-10-14 23:51:10,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:10,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:10,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:10,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:10,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:10,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:10,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:10,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:51:10,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:51:10,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 23:51:10,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:10,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:10,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:51:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:51:10,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:10,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:10,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:10,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:10,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:10,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:10,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:51:10,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:10,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:10,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:10,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:10,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:10,551 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:51:10,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629720244] [2020-10-14 23:51:10,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:10,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:51:10,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308389473] [2020-10-14 23:51:10,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:51:10,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:10,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:51:10,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:51:10,556 INFO L87 Difference]: Start difference. First operand 186 states and 236 transitions. Second operand 14 states. [2020-10-14 23:51:10,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:10,717 INFO L93 Difference]: Finished difference Result 400 states and 519 transitions. [2020-10-14 23:51:10,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:51:10,722 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-10-14 23:51:10,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:10,724 INFO L225 Difference]: With dead ends: 400 [2020-10-14 23:51:10,724 INFO L226 Difference]: Without dead ends: 220 [2020-10-14 23:51:10,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:51:10,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-14 23:51:10,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 205. [2020-10-14 23:51:10,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-14 23:51:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 260 transitions. [2020-10-14 23:51:10,744 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 260 transitions. Word has length 44 [2020-10-14 23:51:10,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:10,745 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 260 transitions. [2020-10-14 23:51:10,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:51:10,745 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 260 transitions. [2020-10-14 23:51:10,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 23:51:10,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:10,746 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:10,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:51:10,746 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:10,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:10,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1092639098, now seen corresponding path program 13 times [2020-10-14 23:51:10,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:10,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173686040] [2020-10-14 23:51:10,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:10,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:10,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:10,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:10,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:10,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:10,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:10,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:10,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:10,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:10,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:10,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:11,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:11,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:51:11,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:51:11,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-14 23:51:11,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:11,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:51:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:51:11,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:11,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:11,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:11,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:11,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:11,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:11,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:11,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:11,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:11,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:11,464 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:51:11,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173686040] [2020-10-14 23:51:11,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:11,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:51:11,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306864648] [2020-10-14 23:51:11,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:51:11,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:11,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:51:11,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:51:11,467 INFO L87 Difference]: Start difference. First operand 205 states and 260 transitions. Second operand 15 states. [2020-10-14 23:51:11,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:11,642 INFO L93 Difference]: Finished difference Result 440 states and 571 transitions. [2020-10-14 23:51:11,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:51:11,644 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-10-14 23:51:11,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:11,646 INFO L225 Difference]: With dead ends: 440 [2020-10-14 23:51:11,646 INFO L226 Difference]: Without dead ends: 241 [2020-10-14 23:51:11,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:51:11,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-14 23:51:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 226. [2020-10-14 23:51:11,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-14 23:51:11,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 288 transitions. [2020-10-14 23:51:11,659 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 288 transitions. Word has length 47 [2020-10-14 23:51:11,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:11,659 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 288 transitions. [2020-10-14 23:51:11,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:51:11,660 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 288 transitions. [2020-10-14 23:51:11,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:51:11,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:11,660 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:11,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:51:11,661 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:11,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:11,661 INFO L82 PathProgramCache]: Analyzing trace with hash -2028938878, now seen corresponding path program 14 times [2020-10-14 23:51:11,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:11,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238840846] [2020-10-14 23:51:11,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:11,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:11,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:11,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:11,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:11,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:11,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:11,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:11,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:11,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:11,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:11,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:11,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:11,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:11,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:11,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:12,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:12,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:12,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:12,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:12,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:12,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:13,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:13,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:51:13,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:51:13,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1918 [2020-10-14 23:51:13,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:13,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:13,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:51:13,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:13,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:51:13,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:13,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:13,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:13,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:13,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:13,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:13,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:51:13,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:13,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:13,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:13,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:13,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:13,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:51:13,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238840846] [2020-10-14 23:51:13,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:13,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:51:13,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676252004] [2020-10-14 23:51:13,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:51:13,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:13,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:51:13,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:51:13,706 INFO L87 Difference]: Start difference. First operand 226 states and 288 transitions. Second operand 15 states. [2020-10-14 23:51:14,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:14,149 INFO L93 Difference]: Finished difference Result 561 states and 710 transitions. [2020-10-14 23:51:14,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:51:14,149 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-14 23:51:14,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:14,153 INFO L225 Difference]: With dead ends: 561 [2020-10-14 23:51:14,153 INFO L226 Difference]: Without dead ends: 284 [2020-10-14 23:51:14,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=492, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:51:14,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-14 23:51:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 157. [2020-10-14 23:51:14,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-14 23:51:14,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 195 transitions. [2020-10-14 23:51:14,169 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 195 transitions. Word has length 50 [2020-10-14 23:51:14,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:14,170 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 195 transitions. [2020-10-14 23:51:14,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:51:14,170 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 195 transitions. [2020-10-14 23:51:14,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:51:14,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:14,171 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:14,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:51:14,171 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:14,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:14,171 INFO L82 PathProgramCache]: Analyzing trace with hash 986164740, now seen corresponding path program 15 times [2020-10-14 23:51:14,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:14,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026390245] [2020-10-14 23:51:14,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:14,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:14,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:51:14,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:51:14,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-10-14 23:51:14,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:14,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:51:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:51:14,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:14,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:14,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:14,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:14,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:14,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:14,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:14,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:14,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:14,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:14,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:14,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:14,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:51:14,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026390245] [2020-10-14 23:51:14,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:14,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:51:14,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246024707] [2020-10-14 23:51:14,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:51:14,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:14,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:51:14,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:51:14,880 INFO L87 Difference]: Start difference. First operand 157 states and 195 transitions. Second operand 16 states. [2020-10-14 23:51:15,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:15,020 INFO L93 Difference]: Finished difference Result 334 states and 425 transitions. [2020-10-14 23:51:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:51:15,021 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2020-10-14 23:51:15,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:15,023 INFO L225 Difference]: With dead ends: 334 [2020-10-14 23:51:15,023 INFO L226 Difference]: Without dead ends: 183 [2020-10-14 23:51:15,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:51:15,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-14 23:51:15,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 172. [2020-10-14 23:51:15,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-14 23:51:15,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 215 transitions. [2020-10-14 23:51:15,035 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 215 transitions. Word has length 50 [2020-10-14 23:51:15,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:15,036 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 215 transitions. [2020-10-14 23:51:15,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:51:15,036 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 215 transitions. [2020-10-14 23:51:15,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 23:51:15,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:15,036 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:15,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:51:15,037 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:15,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:15,037 INFO L82 PathProgramCache]: Analyzing trace with hash -25706312, now seen corresponding path program 16 times [2020-10-14 23:51:15,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:15,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832188471] [2020-10-14 23:51:15,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:15,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:15,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:17,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:17,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:51:17,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:51:17,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2161 [2020-10-14 23:51:17,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:17,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:17,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:51:17,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:17,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:51:17,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:17,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:17,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:17,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:17,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:17,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:17,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:51:17,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:17,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:17,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:17,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:51:17,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832188471] [2020-10-14 23:51:17,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:17,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:51:17,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578015281] [2020-10-14 23:51:17,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:51:17,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:17,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:51:17,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:51:17,388 INFO L87 Difference]: Start difference. First operand 172 states and 215 transitions. Second operand 16 states. [2020-10-14 23:51:18,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:18,330 INFO L93 Difference]: Finished difference Result 418 states and 523 transitions. [2020-10-14 23:51:18,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-14 23:51:18,331 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-10-14 23:51:18,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:18,333 INFO L225 Difference]: With dead ends: 418 [2020-10-14 23:51:18,333 INFO L226 Difference]: Without dead ends: 250 [2020-10-14 23:51:18,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=708, Invalid=1842, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 23:51:18,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-14 23:51:18,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 223. [2020-10-14 23:51:18,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-14 23:51:18,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 282 transitions. [2020-10-14 23:51:18,359 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 282 transitions. Word has length 53 [2020-10-14 23:51:18,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:18,359 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 282 transitions. [2020-10-14 23:51:18,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:51:18,360 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 282 transitions. [2020-10-14 23:51:18,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 23:51:18,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:18,360 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:18,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:51:18,361 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:18,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:18,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1305569990, now seen corresponding path program 17 times [2020-10-14 23:51:18,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:18,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137036345] [2020-10-14 23:51:18,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:18,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:18,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:51:19,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:51:19,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 810 [2020-10-14 23:51:19,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:51:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:51:19,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:19,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:19,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:19,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:19,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:51:19,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:19,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:51:19,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137036345] [2020-10-14 23:51:19,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:19,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:51:19,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378723023] [2020-10-14 23:51:19,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:51:19,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:19,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:51:19,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:51:19,318 INFO L87 Difference]: Start difference. First operand 223 states and 282 transitions. Second operand 17 states. [2020-10-14 23:51:19,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:19,832 INFO L93 Difference]: Finished difference Result 553 states and 696 transitions. [2020-10-14 23:51:19,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 23:51:19,833 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 53 [2020-10-14 23:51:19,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:19,835 INFO L225 Difference]: With dead ends: 553 [2020-10-14 23:51:19,835 INFO L226 Difference]: Without dead ends: 280 [2020-10-14 23:51:19,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=285, Invalid=645, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:51:19,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-14 23:51:19,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 162. [2020-10-14 23:51:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-14 23:51:19,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 201 transitions. [2020-10-14 23:51:19,847 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 201 transitions. Word has length 53 [2020-10-14 23:51:19,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:19,847 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 201 transitions. [2020-10-14 23:51:19,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:51:19,847 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 201 transitions. [2020-10-14 23:51:19,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 23:51:19,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:19,848 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:19,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 23:51:19,848 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:19,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:19,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1047404552, now seen corresponding path program 18 times [2020-10-14 23:51:19,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:19,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447610115] [2020-10-14 23:51:19,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:19,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:19,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:20,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:20,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:51:20,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:51:20,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-14 23:51:20,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:20,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:20,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:51:20,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:20,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:51:20,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:20,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:20,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:20,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:20,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:20,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:20,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:51:20,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:20,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:20,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:20,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:20,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:20,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:51:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:51:20,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447610115] [2020-10-14 23:51:20,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:20,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:51:20,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110176297] [2020-10-14 23:51:20,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:51:20,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:20,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:51:20,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:51:20,293 INFO L87 Difference]: Start difference. First operand 162 states and 201 transitions. Second operand 17 states. [2020-10-14 23:51:20,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:20,512 INFO L93 Difference]: Finished difference Result 342 states and 433 transitions. [2020-10-14 23:51:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:51:20,512 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 53 [2020-10-14 23:51:20,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:20,514 INFO L225 Difference]: With dead ends: 342 [2020-10-14 23:51:20,514 INFO L226 Difference]: Without dead ends: 186 [2020-10-14 23:51:20,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:51:20,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-14 23:51:20,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 175. [2020-10-14 23:51:20,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-14 23:51:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 217 transitions. [2020-10-14 23:51:20,532 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 217 transitions. Word has length 53 [2020-10-14 23:51:20,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:20,532 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 217 transitions. [2020-10-14 23:51:20,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:51:20,532 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 217 transitions. [2020-10-14 23:51:20,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 23:51:20,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:20,534 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:20,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 23:51:20,534 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:20,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:20,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1574774204, now seen corresponding path program 19 times [2020-10-14 23:51:20,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:20,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241894991] [2020-10-14 23:51:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:20,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:20,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:20,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:20,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:20,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:20,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:20,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:20,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:20,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:20,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:21,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:21,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:21,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 23:51:21,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:51:21,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-10-14 23:51:21,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:21,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:21,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:51:21,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:21,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:51:21,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:21,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:21,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:21,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:21,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:21,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:21,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:51:21,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:21,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:21,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:21,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:21,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:21,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:21,665 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:51:21,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241894991] [2020-10-14 23:51:21,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:21,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:51:21,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107144081] [2020-10-14 23:51:21,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:51:21,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:21,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:51:21,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:51:21,668 INFO L87 Difference]: Start difference. First operand 175 states and 217 transitions. Second operand 18 states. [2020-10-14 23:51:21,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:21,864 INFO L93 Difference]: Finished difference Result 370 states and 469 transitions. [2020-10-14 23:51:21,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:51:21,864 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2020-10-14 23:51:21,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:21,866 INFO L225 Difference]: With dead ends: 370 [2020-10-14 23:51:21,866 INFO L226 Difference]: Without dead ends: 201 [2020-10-14 23:51:21,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:51:21,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-14 23:51:21,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 190. [2020-10-14 23:51:21,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-14 23:51:21,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 237 transitions. [2020-10-14 23:51:21,878 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 237 transitions. Word has length 56 [2020-10-14 23:51:21,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:21,879 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 237 transitions. [2020-10-14 23:51:21,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:51:21,879 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 237 transitions. [2020-10-14 23:51:21,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 23:51:21,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:21,880 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:21,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 23:51:21,880 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:21,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:21,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1453708168, now seen corresponding path program 20 times [2020-10-14 23:51:21,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:21,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777301408] [2020-10-14 23:51:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:21,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:21,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:21,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:21,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:21,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:22,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:22,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:22,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:22,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:22,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:22,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:22,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:22,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:22,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:22,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:22,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:22,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:22,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:22,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:23,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:24,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:24,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 23:51:24,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:51:24,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2612 [2020-10-14 23:51:24,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:24,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:24,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:51:24,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:24,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 23:51:24,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:24,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:24,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:24,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:24,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:24,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:24,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:51:24,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:24,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:24,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:24,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:24,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:24,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:51:24,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777301408] [2020-10-14 23:51:24,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:24,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:51:24,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097500546] [2020-10-14 23:51:24,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:51:24,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:24,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:51:24,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:51:24,657 INFO L87 Difference]: Start difference. First operand 190 states and 237 transitions. Second operand 18 states. [2020-10-14 23:51:25,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:25,728 INFO L93 Difference]: Finished difference Result 462 states and 577 transitions. [2020-10-14 23:51:25,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-14 23:51:25,729 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 59 [2020-10-14 23:51:25,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:25,731 INFO L225 Difference]: With dead ends: 462 [2020-10-14 23:51:25,731 INFO L226 Difference]: Without dead ends: 276 [2020-10-14 23:51:25,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=951, Invalid=2471, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 23:51:25,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-14 23:51:25,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 247. [2020-10-14 23:51:25,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-14 23:51:25,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 312 transitions. [2020-10-14 23:51:25,761 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 312 transitions. Word has length 59 [2020-10-14 23:51:25,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:25,761 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 312 transitions. [2020-10-14 23:51:25,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:51:25,762 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 312 transitions. [2020-10-14 23:51:25,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 23:51:25,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:25,763 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:25,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 23:51:25,763 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:25,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:25,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1561395450, now seen corresponding path program 21 times [2020-10-14 23:51:25,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:25,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030257887] [2020-10-14 23:51:25,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:25,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:25,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:25,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:25,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:25,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:25,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:25,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:26,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:26,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:26,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:26,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:27,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:27,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 23:51:27,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:51:27,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1234 [2020-10-14 23:51:27,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:27,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:51:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 23:51:27,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:27,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:27,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:27,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:27,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:27,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:27,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:27,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:27,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:27,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:27,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:51:27,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030257887] [2020-10-14 23:51:27,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:27,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:51:27,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639985684] [2020-10-14 23:51:27,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:51:27,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:27,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:51:27,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:51:27,193 INFO L87 Difference]: Start difference. First operand 247 states and 312 transitions. Second operand 19 states. [2020-10-14 23:51:27,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:27,415 INFO L93 Difference]: Finished difference Result 524 states and 675 transitions. [2020-10-14 23:51:27,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:51:27,416 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 59 [2020-10-14 23:51:27,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:27,418 INFO L225 Difference]: With dead ends: 524 [2020-10-14 23:51:27,418 INFO L226 Difference]: Without dead ends: 283 [2020-10-14 23:51:27,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:51:27,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-14 23:51:27,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 268. [2020-10-14 23:51:27,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-14 23:51:27,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 340 transitions. [2020-10-14 23:51:27,432 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 340 transitions. Word has length 59 [2020-10-14 23:51:27,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:27,433 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 340 transitions. [2020-10-14 23:51:27,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:51:27,433 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 340 transitions. [2020-10-14 23:51:27,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 23:51:27,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:27,434 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 13, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:27,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 23:51:27,434 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:27,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:27,434 INFO L82 PathProgramCache]: Analyzing trace with hash -247135742, now seen corresponding path program 22 times [2020-10-14 23:51:27,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:27,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174705205] [2020-10-14 23:51:27,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:27,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:27,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:27,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:27,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:27,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:27,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:27,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:27,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:27,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:27,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:27,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:27,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:27,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:27,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:28,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:28,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:28,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:28,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:28,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:28,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:29,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:29,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 23:51:29,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:51:29,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2053 [2020-10-14 23:51:29,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:29,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:51:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:51:29,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:51:29,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:29,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:29,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:29,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:29,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:29,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:29,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:29,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:29,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:29,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:29,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:29,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:29,679 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:51:29,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174705205] [2020-10-14 23:51:29,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:29,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:51:29,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161726542] [2020-10-14 23:51:29,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:51:29,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:29,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:51:29,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:51:29,681 INFO L87 Difference]: Start difference. First operand 268 states and 340 transitions. Second operand 19 states. [2020-10-14 23:51:30,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:30,278 INFO L93 Difference]: Finished difference Result 669 states and 842 transitions. [2020-10-14 23:51:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 23:51:30,278 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-14 23:51:30,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:30,281 INFO L225 Difference]: With dead ends: 669 [2020-10-14 23:51:30,281 INFO L226 Difference]: Without dead ends: 338 [2020-10-14 23:51:30,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=372, Invalid=818, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:51:30,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-14 23:51:30,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 193. [2020-10-14 23:51:30,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-14 23:51:30,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 239 transitions. [2020-10-14 23:51:30,295 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 239 transitions. Word has length 62 [2020-10-14 23:51:30,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:30,296 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 239 transitions. [2020-10-14 23:51:30,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:51:30,296 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 239 transitions. [2020-10-14 23:51:30,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 23:51:30,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:30,297 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:30,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 23:51:30,297 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:30,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:30,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1526999420, now seen corresponding path program 23 times [2020-10-14 23:51:30,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:30,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968788427] [2020-10-14 23:51:30,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:30,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:30,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:30,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:30,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:30,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:30,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:30,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:30,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:30,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:31,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:31,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:31,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:31,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 23:51:31,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:51:31,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 980 [2020-10-14 23:51:31,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:31,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:31,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:51:31,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:31,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:51:31,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:31,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:31,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:31,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:31,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:31,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:31,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:31,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:31,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:31,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:31,474 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:51:31,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968788427] [2020-10-14 23:51:31,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:31,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:51:31,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339794525] [2020-10-14 23:51:31,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:51:31,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:31,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:51:31,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=238, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:51:31,476 INFO L87 Difference]: Start difference. First operand 193 states and 239 transitions. Second operand 20 states. [2020-10-14 23:51:32,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:32,617 INFO L93 Difference]: Finished difference Result 469 states and 584 transitions. [2020-10-14 23:51:32,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-14 23:51:32,620 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 62 [2020-10-14 23:51:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:32,621 INFO L225 Difference]: With dead ends: 469 [2020-10-14 23:51:32,621 INFO L226 Difference]: Without dead ends: 281 [2020-10-14 23:51:32,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1230, Invalid=3192, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 23:51:32,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-14 23:51:32,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 252. [2020-10-14 23:51:32,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-14 23:51:32,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 318 transitions. [2020-10-14 23:51:32,642 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 318 transitions. Word has length 62 [2020-10-14 23:51:32,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:32,643 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 318 transitions. [2020-10-14 23:51:32,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:51:32,643 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 318 transitions. [2020-10-14 23:51:32,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 23:51:32,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:32,644 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:32,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 23:51:32,644 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:32,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:32,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1268833982, now seen corresponding path program 24 times [2020-10-14 23:51:32,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:32,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841826881] [2020-10-14 23:51:32,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:32,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:32,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:32,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:32,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:32,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:32,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:32,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 23:51:32,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:51:32,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-14 23:51:32,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:32,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:51:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:51:32,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:33,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:33,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:33,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:33,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:33,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:33,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:51:33,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:33,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:33,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:33,160 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:51:33,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841826881] [2020-10-14 23:51:33,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:33,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:51:33,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786377704] [2020-10-14 23:51:33,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:51:33,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:33,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:51:33,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:51:33,161 INFO L87 Difference]: Start difference. First operand 252 states and 318 transitions. Second operand 20 states. [2020-10-14 23:51:33,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:33,380 INFO L93 Difference]: Finished difference Result 532 states and 683 transitions. [2020-10-14 23:51:33,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:51:33,383 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 62 [2020-10-14 23:51:33,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:33,385 INFO L225 Difference]: With dead ends: 532 [2020-10-14 23:51:33,386 INFO L226 Difference]: Without dead ends: 286 [2020-10-14 23:51:33,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:51:33,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-14 23:51:33,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 271. [2020-10-14 23:51:33,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-14 23:51:33,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 342 transitions. [2020-10-14 23:51:33,402 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 342 transitions. Word has length 62 [2020-10-14 23:51:33,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:33,402 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 342 transitions. [2020-10-14 23:51:33,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:51:33,402 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 342 transitions. [2020-10-14 23:51:33,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 23:51:33,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:33,403 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:33,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 23:51:33,404 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:33,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:33,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1109156678, now seen corresponding path program 25 times [2020-10-14 23:51:33,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:33,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153087777] [2020-10-14 23:51:33,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:33,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:33,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:33,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:33,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:33,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:33,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:33,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:33,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:33,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:34,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:34,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:34,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 23:51:34,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:51:34,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 809 [2020-10-14 23:51:34,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:34,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:51:34,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:34,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 23:51:34,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:34,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:34,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:34,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:34,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:34,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:34,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:51:34,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:34,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:34,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:34,427 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 423 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:51:34,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153087777] [2020-10-14 23:51:34,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:34,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:51:34,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698891871] [2020-10-14 23:51:34,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:51:34,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:34,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:51:34,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:51:34,428 INFO L87 Difference]: Start difference. First operand 271 states and 342 transitions. Second operand 21 states. [2020-10-14 23:51:34,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:34,974 INFO L93 Difference]: Finished difference Result 673 states and 844 transitions. [2020-10-14 23:51:34,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 23:51:34,975 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 65 [2020-10-14 23:51:34,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:34,977 INFO L225 Difference]: With dead ends: 673 [2020-10-14 23:51:34,977 INFO L226 Difference]: Without dead ends: 340 [2020-10-14 23:51:34,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=471, Invalid=1011, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:51:34,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-14 23:51:34,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 198. [2020-10-14 23:51:34,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-14 23:51:34,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 245 transitions. [2020-10-14 23:51:34,992 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 245 transitions. Word has length 65 [2020-10-14 23:51:34,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:34,992 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 245 transitions. [2020-10-14 23:51:34,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:51:34,993 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 245 transitions. [2020-10-14 23:51:34,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 23:51:34,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:34,993 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:34,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 23:51:34,994 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:34,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:34,994 INFO L82 PathProgramCache]: Analyzing trace with hash -850991240, now seen corresponding path program 26 times [2020-10-14 23:51:34,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:34,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111022926] [2020-10-14 23:51:34,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:35,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:35,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:35,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:35,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:35,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:35,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:35,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 23:51:35,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:51:35,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-14 23:51:35,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:35,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:51:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 23:51:35,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:35,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:35,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:35,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:35,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:35,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:35,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:35,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:35,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:35,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:35,535 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:51:35,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111022926] [2020-10-14 23:51:35,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:35,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:51:35,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169657938] [2020-10-14 23:51:35,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:51:35,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:35,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:51:35,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:51:35,537 INFO L87 Difference]: Start difference. First operand 198 states and 245 transitions. Second operand 21 states. [2020-10-14 23:51:35,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:35,780 INFO L93 Difference]: Finished difference Result 414 states and 521 transitions. [2020-10-14 23:51:35,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:51:35,780 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 65 [2020-10-14 23:51:35,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:35,782 INFO L225 Difference]: With dead ends: 414 [2020-10-14 23:51:35,782 INFO L226 Difference]: Without dead ends: 222 [2020-10-14 23:51:35,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:51:35,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-14 23:51:35,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 211. [2020-10-14 23:51:35,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-14 23:51:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 261 transitions. [2020-10-14 23:51:35,796 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 261 transitions. Word has length 65 [2020-10-14 23:51:35,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:35,796 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 261 transitions. [2020-10-14 23:51:35,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:51:35,797 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 261 transitions. [2020-10-14 23:51:35,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 23:51:35,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:35,798 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:35,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 23:51:35,798 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:35,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:35,798 INFO L82 PathProgramCache]: Analyzing trace with hash 28746436, now seen corresponding path program 27 times [2020-10-14 23:51:35,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:35,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064910616] [2020-10-14 23:51:35,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:35,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:35,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:35,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:35,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:36,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:36,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:36,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:36,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:36,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:36,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:36,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:36,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:51:36,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:51:36,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 820 [2020-10-14 23:51:36,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:36,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:51:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 23:51:36,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:36,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:36,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:36,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:36,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:36,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:36,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:51:36,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:36,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:36,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:36,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:36,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:36,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:36,847 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 475 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:51:36,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064910616] [2020-10-14 23:51:36,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:36,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:51:36,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761371980] [2020-10-14 23:51:36,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:51:36,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:36,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:51:36,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:51:36,849 INFO L87 Difference]: Start difference. First operand 211 states and 261 transitions. Second operand 22 states. [2020-10-14 23:51:37,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:37,641 INFO L93 Difference]: Finished difference Result 558 states and 688 transitions. [2020-10-14 23:51:37,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 23:51:37,641 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 68 [2020-10-14 23:51:37,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:37,644 INFO L225 Difference]: With dead ends: 558 [2020-10-14 23:51:37,644 INFO L226 Difference]: Without dead ends: 282 [2020-10-14 23:51:37,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=525, Invalid=1115, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:51:37,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-14 23:51:37,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 207. [2020-10-14 23:51:37,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-14 23:51:37,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 256 transitions. [2020-10-14 23:51:37,666 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 256 transitions. Word has length 68 [2020-10-14 23:51:37,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:37,667 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 256 transitions. [2020-10-14 23:51:37,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:51:37,667 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 256 transitions. [2020-10-14 23:51:37,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 23:51:37,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:37,670 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:37,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 23:51:37,671 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:37,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:37,671 INFO L82 PathProgramCache]: Analyzing trace with hash 286911874, now seen corresponding path program 28 times [2020-10-14 23:51:37,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:37,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496015010] [2020-10-14 23:51:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:37,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:37,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:37,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:38,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:38,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:38,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:51:38,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:51:38,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 652 [2020-10-14 23:51:38,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:38,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:38,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:51:38,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:38,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 23:51:38,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:38,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:38,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:38,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:38,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:38,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:38,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:51:38,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:38,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:38,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:38,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:38,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:38,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:51:38,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496015010] [2020-10-14 23:51:38,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:38,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:51:38,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585970041] [2020-10-14 23:51:38,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:51:38,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:38,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:51:38,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:51:38,573 INFO L87 Difference]: Start difference. First operand 207 states and 256 transitions. Second operand 22 states. [2020-10-14 23:51:38,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:38,813 INFO L93 Difference]: Finished difference Result 432 states and 543 transitions. [2020-10-14 23:51:38,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:51:38,815 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 68 [2020-10-14 23:51:38,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:38,818 INFO L225 Difference]: With dead ends: 432 [2020-10-14 23:51:38,818 INFO L226 Difference]: Without dead ends: 231 [2020-10-14 23:51:38,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:51:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-14 23:51:38,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 220. [2020-10-14 23:51:38,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-14 23:51:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 272 transitions. [2020-10-14 23:51:38,835 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 272 transitions. Word has length 68 [2020-10-14 23:51:38,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:38,835 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 272 transitions. [2020-10-14 23:51:38,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:51:38,835 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 272 transitions. [2020-10-14 23:51:38,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 23:51:38,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:38,836 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:38,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 23:51:38,836 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:38,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:38,837 INFO L82 PathProgramCache]: Analyzing trace with hash -876451718, now seen corresponding path program 29 times [2020-10-14 23:51:38,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:38,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767308003] [2020-10-14 23:51:38,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:38,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:38,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:38,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:38,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:39,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:39,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:39,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:39,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:39,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:39,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:39,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:39,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:39,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 23:51:39,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:51:39,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-10-14 23:51:39,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:39,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:39,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:51:39,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:39,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 23:51:39,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:39,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:39,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:39,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:39,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:39,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:51:39,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:39,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:39,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:39,976 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:51:39,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767308003] [2020-10-14 23:51:39,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:39,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:51:39,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977790424] [2020-10-14 23:51:39,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:51:39,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:39,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:51:39,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:51:39,979 INFO L87 Difference]: Start difference. First operand 220 states and 272 transitions. Second operand 23 states. [2020-10-14 23:51:40,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:40,211 INFO L93 Difference]: Finished difference Result 460 states and 579 transitions. [2020-10-14 23:51:40,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:51:40,211 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 71 [2020-10-14 23:51:40,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:40,212 INFO L225 Difference]: With dead ends: 460 [2020-10-14 23:51:40,213 INFO L226 Difference]: Without dead ends: 246 [2020-10-14 23:51:40,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:51:40,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-14 23:51:40,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 235. [2020-10-14 23:51:40,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-14 23:51:40,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 292 transitions. [2020-10-14 23:51:40,227 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 292 transitions. Word has length 71 [2020-10-14 23:51:40,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:40,227 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 292 transitions. [2020-10-14 23:51:40,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:51:40,228 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 292 transitions. [2020-10-14 23:51:40,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 23:51:40,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:40,229 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 17, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:40,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 23:51:40,229 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:40,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:40,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1744857730, now seen corresponding path program 30 times [2020-10-14 23:51:40,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:40,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627656461] [2020-10-14 23:51:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:40,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:40,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:40,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:40,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:40,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:40,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:40,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:40,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:40,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:40,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:40,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:40,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:40,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:40,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:40,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:40,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:40,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:41,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:41,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:41,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:41,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:43,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:43,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:51:43,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:51:43,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2767 [2020-10-14 23:51:43,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:43,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:51:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 23:51:43,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:43,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:43,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:43,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:43,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:43,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:43,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:43,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:43,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:43,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:43,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:43,276 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 583 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:51:43,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627656461] [2020-10-14 23:51:43,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:43,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:51:43,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436087062] [2020-10-14 23:51:43,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:51:43,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:43,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:51:43,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=310, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:51:43,278 INFO L87 Difference]: Start difference. First operand 235 states and 292 transitions. Second operand 23 states. [2020-10-14 23:51:44,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:44,080 INFO L93 Difference]: Finished difference Result 625 states and 772 transitions. [2020-10-14 23:51:44,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 23:51:44,081 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 74 [2020-10-14 23:51:44,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:44,083 INFO L225 Difference]: With dead ends: 625 [2020-10-14 23:51:44,084 INFO L226 Difference]: Without dead ends: 315 [2020-10-14 23:51:44,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=582, Invalid=1224, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:51:44,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-14 23:51:44,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 229. [2020-10-14 23:51:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-14 23:51:44,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 283 transitions. [2020-10-14 23:51:44,102 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 283 transitions. Word has length 74 [2020-10-14 23:51:44,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:44,103 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 283 transitions. [2020-10-14 23:51:44,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:51:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 283 transitions. [2020-10-14 23:51:44,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 23:51:44,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:44,104 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:44,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 23:51:44,105 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:44,105 INFO L82 PathProgramCache]: Analyzing trace with hash 464994052, now seen corresponding path program 31 times [2020-10-14 23:51:44,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:44,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746648493] [2020-10-14 23:51:44,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:44,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:44,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:44,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:44,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:44,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:44,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:44,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:44,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:44,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:44,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:44,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:45,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:45,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:51:45,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:51:45,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 965 [2020-10-14 23:51:45,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:45,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:45,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:51:45,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:45,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 23:51:45,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:45,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:45,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:45,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:45,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:45,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:45,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:51:45,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:45,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:45,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:45,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:51:45,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746648493] [2020-10-14 23:51:45,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:45,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 23:51:45,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094594556] [2020-10-14 23:51:45,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 23:51:45,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:45,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 23:51:45,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:51:45,371 INFO L87 Difference]: Start difference. First operand 229 states and 283 transitions. Second operand 24 states. [2020-10-14 23:51:45,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:45,644 INFO L93 Difference]: Finished difference Result 478 states and 601 transitions. [2020-10-14 23:51:45,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:51:45,644 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 74 [2020-10-14 23:51:45,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:45,646 INFO L225 Difference]: With dead ends: 478 [2020-10-14 23:51:45,647 INFO L226 Difference]: Without dead ends: 255 [2020-10-14 23:51:45,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:51:45,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-14 23:51:45,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 244. [2020-10-14 23:51:45,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-14 23:51:45,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 303 transitions. [2020-10-14 23:51:45,671 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 303 transitions. Word has length 74 [2020-10-14 23:51:45,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:45,671 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 303 transitions. [2020-10-14 23:51:45,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 23:51:45,672 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 303 transitions. [2020-10-14 23:51:45,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 23:51:45,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:45,674 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 18, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:45,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 23:51:45,675 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:45,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:45,675 INFO L82 PathProgramCache]: Analyzing trace with hash 85102520, now seen corresponding path program 32 times [2020-10-14 23:51:45,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:45,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718354979] [2020-10-14 23:51:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:45,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:45,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:45,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:45,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:45,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:45,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:46,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:46,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:46,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:46,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:46,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:46,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:46,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:46,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:46,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:46,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:47,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:47,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:47,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:47,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:48,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:48,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:48,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 23:51:48,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:51:48,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3060 [2020-10-14 23:51:48,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:48,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:51:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 23:51:48,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:49,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:49,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:49,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:49,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:49,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:49,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:51:49,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:49,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:49,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:49,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:49,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:49,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:49,020 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 644 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:51:49,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718354979] [2020-10-14 23:51:49,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:49,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 23:51:49,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37521183] [2020-10-14 23:51:49,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 23:51:49,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:49,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 23:51:49,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=336, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:51:49,022 INFO L87 Difference]: Start difference. First operand 244 states and 303 transitions. Second operand 24 states. [2020-10-14 23:51:50,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:50,564 INFO L93 Difference]: Finished difference Result 594 states and 739 transitions. [2020-10-14 23:51:50,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-10-14 23:51:50,565 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 77 [2020-10-14 23:51:50,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:50,567 INFO L225 Difference]: With dead ends: 594 [2020-10-14 23:51:50,567 INFO L226 Difference]: Without dead ends: 354 [2020-10-14 23:51:50,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1825 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1896, Invalid=4910, Unknown=0, NotChecked=0, Total=6806 [2020-10-14 23:51:50,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-14 23:51:50,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 319. [2020-10-14 23:51:50,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-14 23:51:50,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 402 transitions. [2020-10-14 23:51:50,590 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 402 transitions. Word has length 77 [2020-10-14 23:51:50,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:50,590 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 402 transitions. [2020-10-14 23:51:50,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 23:51:50,591 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 402 transitions. [2020-10-14 23:51:50,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 23:51:50,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:50,592 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 19, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:50,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 23:51:50,592 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:50,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:50,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1194761158, now seen corresponding path program 33 times [2020-10-14 23:51:50,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:50,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493833236] [2020-10-14 23:51:50,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:50,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:50,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:50,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:51,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:51,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:51,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:51,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:51,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:51,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:51,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:51,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:51,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:51,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 23:51:51,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:51:51,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1141 [2020-10-14 23:51:51,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:51,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:51,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:51:51,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:51,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 23:51:51,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:52,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:52,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:52,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:52,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:52,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:52,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:51:52,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:52,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:52,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:52,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:52,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:52,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:52,065 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:51:52,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493833236] [2020-10-14 23:51:52,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:52,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 23:51:52,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823480316] [2020-10-14 23:51:52,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 23:51:52,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:52,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 23:51:52,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:51:52,067 INFO L87 Difference]: Start difference. First operand 319 states and 402 transitions. Second operand 25 states. [2020-10-14 23:51:52,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:52,343 INFO L93 Difference]: Finished difference Result 668 states and 855 transitions. [2020-10-14 23:51:52,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:51:52,343 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 77 [2020-10-14 23:51:52,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:52,345 INFO L225 Difference]: With dead ends: 668 [2020-10-14 23:51:52,345 INFO L226 Difference]: Without dead ends: 355 [2020-10-14 23:51:52,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:51:52,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-14 23:51:52,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 340. [2020-10-14 23:51:52,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-10-14 23:51:52,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 430 transitions. [2020-10-14 23:51:52,364 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 430 transitions. Word has length 77 [2020-10-14 23:51:52,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:52,364 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 430 transitions. [2020-10-14 23:51:52,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 23:51:52,364 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 430 transitions. [2020-10-14 23:51:52,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 23:51:52,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:52,365 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 19, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:52,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 23:51:52,365 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:52,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:52,366 INFO L82 PathProgramCache]: Analyzing trace with hash -2018847038, now seen corresponding path program 34 times [2020-10-14 23:51:52,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:52,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377675718] [2020-10-14 23:51:52,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:52,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:52,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:52,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:52,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:52,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:52,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:52,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:52,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:53,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:53,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:53,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:53,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:53,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:53,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:53,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:53,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:53,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:53,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:54,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:54,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:54,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:55,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:55,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 23:51:55,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:51:55,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2902 [2020-10-14 23:51:55,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:55,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:51:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 23:51:55,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:55,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:55,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:55,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:55,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:55,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:55,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:51:55,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:55,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:55,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:55,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:55,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:55,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:51:55,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377675718] [2020-10-14 23:51:55,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:55,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 23:51:55,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97130839] [2020-10-14 23:51:55,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 23:51:55,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:55,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 23:51:55,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=363, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:51:55,575 INFO L87 Difference]: Start difference. First operand 340 states and 430 transitions. Second operand 25 states. [2020-10-14 23:51:57,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:51:57,246 INFO L93 Difference]: Finished difference Result 793 states and 1001 transitions. [2020-10-14 23:51:57,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-10-14 23:51:57,246 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 80 [2020-10-14 23:51:57,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:51:57,249 INFO L225 Difference]: With dead ends: 793 [2020-10-14 23:51:57,249 INFO L226 Difference]: Without dead ends: 457 [2020-10-14 23:51:57,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2021 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2085, Invalid=5397, Unknown=0, NotChecked=0, Total=7482 [2020-10-14 23:51:57,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-10-14 23:51:57,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 334. [2020-10-14 23:51:57,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-10-14 23:51:57,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 421 transitions. [2020-10-14 23:51:57,270 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 421 transitions. Word has length 80 [2020-10-14 23:51:57,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:51:57,270 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 421 transitions. [2020-10-14 23:51:57,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 23:51:57,271 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 421 transitions. [2020-10-14 23:51:57,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 23:51:57,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:51:57,271 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 20, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:51:57,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 23:51:57,272 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:51:57,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:51:57,272 INFO L82 PathProgramCache]: Analyzing trace with hash 996256580, now seen corresponding path program 35 times [2020-10-14 23:51:57,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:51:57,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044602045] [2020-10-14 23:51:57,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:51:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:57,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:57,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:57,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:57,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:57,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:57,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:57,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:57,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:57,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:58,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:58,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:58,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 23:51:58,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:51:58,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-10-14 23:51:58,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:58,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:58,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 23:51:58,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:51:58,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 23:51:58,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:58,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:51:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:51:58,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:51:58,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:51:58,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:51:58,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:51:58,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:51:58,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:51:58,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:51:58,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:51:58,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:51:58,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:51:58,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:51:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 713 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:51:58,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044602045] [2020-10-14 23:51:58,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:51:58,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 23:51:58,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962770798] [2020-10-14 23:51:58,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 23:51:58,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:51:58,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 23:51:58,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=391, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:51:58,613 INFO L87 Difference]: Start difference. First operand 334 states and 421 transitions. Second operand 26 states. [2020-10-14 23:52:00,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:00,394 INFO L93 Difference]: Finished difference Result 778 states and 981 transitions. [2020-10-14 23:52:00,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-10-14 23:52:00,395 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 80 [2020-10-14 23:52:00,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:00,397 INFO L225 Difference]: With dead ends: 778 [2020-10-14 23:52:00,397 INFO L226 Difference]: Without dead ends: 449 [2020-10-14 23:52:00,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2227 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2283, Invalid=5907, Unknown=0, NotChecked=0, Total=8190 [2020-10-14 23:52:00,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-10-14 23:52:00,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 330. [2020-10-14 23:52:00,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-14 23:52:00,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 416 transitions. [2020-10-14 23:52:00,416 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 416 transitions. Word has length 80 [2020-10-14 23:52:00,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:00,417 INFO L479 AbstractCegarLoop]: Abstraction has 330 states and 416 transitions. [2020-10-14 23:52:00,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 23:52:00,417 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 416 transitions. [2020-10-14 23:52:00,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 23:52:00,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:00,417 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:00,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 23:52:00,418 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:00,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:00,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1254422018, now seen corresponding path program 36 times [2020-10-14 23:52:00,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:00,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769166473] [2020-10-14 23:52:00,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:00,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:00,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:00,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:00,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:00,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:00,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:00,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 23:52:00,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:52:00,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-14 23:52:00,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:00,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:00,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 23:52:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 23:52:00,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:01,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:01,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:01,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:01,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:01,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:01,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:52:01,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:01,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:01,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:52:01,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769166473] [2020-10-14 23:52:01,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:01,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 23:52:01,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086453320] [2020-10-14 23:52:01,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 23:52:01,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:01,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 23:52:01,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:52:01,154 INFO L87 Difference]: Start difference. First operand 330 states and 416 transitions. Second operand 26 states. [2020-10-14 23:52:01,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:01,328 INFO L93 Difference]: Finished difference Result 688 states and 879 transitions. [2020-10-14 23:52:01,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:52:01,329 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 80 [2020-10-14 23:52:01,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:01,330 INFO L225 Difference]: With dead ends: 688 [2020-10-14 23:52:01,331 INFO L226 Difference]: Without dead ends: 364 [2020-10-14 23:52:01,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:52:01,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-14 23:52:01,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 349. [2020-10-14 23:52:01,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-14 23:52:01,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 440 transitions. [2020-10-14 23:52:01,347 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 440 transitions. Word has length 80 [2020-10-14 23:52:01,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:01,347 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 440 transitions. [2020-10-14 23:52:01,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 23:52:01,347 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 440 transitions. [2020-10-14 23:52:01,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 23:52:01,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:01,348 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 21, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:01,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 23:52:01,349 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:01,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:01,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1307275270, now seen corresponding path program 37 times [2020-10-14 23:52:01,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:01,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518759803] [2020-10-14 23:52:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:01,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:01,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:01,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:01,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:01,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:01,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:01,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:01,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:01,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:01,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:01,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:02,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:02,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 23:52:02,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:52:02,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-10-14 23:52:02,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:02,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:02,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:52:02,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:02,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 23:52:02,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:02,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:02,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:02,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:02,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:02,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:02,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:52:02,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:02,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:02,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:02,640 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:52:02,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518759803] [2020-10-14 23:52:02,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:02,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 23:52:02,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625367917] [2020-10-14 23:52:02,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 23:52:02,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:02,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 23:52:02,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:52:02,642 INFO L87 Difference]: Start difference. First operand 349 states and 440 transitions. Second operand 27 states. [2020-10-14 23:52:02,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:02,919 INFO L93 Difference]: Finished difference Result 728 states and 931 transitions. [2020-10-14 23:52:02,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:52:02,920 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 83 [2020-10-14 23:52:02,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:02,922 INFO L225 Difference]: With dead ends: 728 [2020-10-14 23:52:02,922 INFO L226 Difference]: Without dead ends: 385 [2020-10-14 23:52:02,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:52:02,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-10-14 23:52:02,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 370. [2020-10-14 23:52:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-10-14 23:52:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 468 transitions. [2020-10-14 23:52:02,952 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 468 transitions. Word has length 83 [2020-10-14 23:52:02,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:02,953 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 468 transitions. [2020-10-14 23:52:02,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 23:52:02,953 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 468 transitions. [2020-10-14 23:52:02,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 23:52:02,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:02,954 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 21, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:02,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 23:52:02,955 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:02,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:02,955 INFO L82 PathProgramCache]: Analyzing trace with hash 442700546, now seen corresponding path program 38 times [2020-10-14 23:52:02,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:02,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618930030] [2020-10-14 23:52:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:02,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:02,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:03,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:03,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:03,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:03,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:03,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:03,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:03,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:03,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:03,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:03,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:03,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:03,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:03,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:04,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:04,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:04,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:04,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:04,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:04,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:05,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:05,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 23:52:05,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:52:05,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2850 [2020-10-14 23:52:05,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:05,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:52:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:52:05,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:06,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:06,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:06,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:06,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:06,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:06,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:52:06,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:06,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:06,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:06,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:06,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:06,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 845 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:52:06,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618930030] [2020-10-14 23:52:06,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:06,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 23:52:06,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195294646] [2020-10-14 23:52:06,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 23:52:06,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:06,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 23:52:06,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=420, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:52:06,141 INFO L87 Difference]: Start difference. First operand 370 states and 468 transitions. Second operand 27 states. [2020-10-14 23:52:06,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:06,972 INFO L93 Difference]: Finished difference Result 921 states and 1154 transitions. [2020-10-14 23:52:06,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-14 23:52:06,972 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 86 [2020-10-14 23:52:06,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:06,974 INFO L225 Difference]: With dead ends: 921 [2020-10-14 23:52:06,975 INFO L226 Difference]: Without dead ends: 464 [2020-10-14 23:52:06,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=840, Invalid=1710, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 23:52:06,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-14 23:52:06,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 265. [2020-10-14 23:52:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-14 23:52:06,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 327 transitions. [2020-10-14 23:52:06,993 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 327 transitions. Word has length 86 [2020-10-14 23:52:06,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:06,994 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 327 transitions. [2020-10-14 23:52:06,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 23:52:06,994 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 327 transitions. [2020-10-14 23:52:06,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 23:52:06,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:06,995 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:06,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 23:52:06,995 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:06,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:06,995 INFO L82 PathProgramCache]: Analyzing trace with hash -837163132, now seen corresponding path program 39 times [2020-10-14 23:52:06,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:06,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555217819] [2020-10-14 23:52:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:07,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:07,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:07,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:07,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:07,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:07,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:07,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:07,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:07,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:07,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:07,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:08,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:08,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 23:52:08,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:52:08,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1074 [2020-10-14 23:52:08,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:08,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 23:52:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:52:08,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:08,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:08,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:08,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:08,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:08,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:08,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:52:08,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:08,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:08,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:08,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:08,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:08,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:52:08,504 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:52:08,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555217819] [2020-10-14 23:52:08,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:08,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 23:52:08,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351864196] [2020-10-14 23:52:08,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 23:52:08,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:08,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 23:52:08,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=450, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:52:08,507 INFO L87 Difference]: Start difference. First operand 265 states and 327 transitions. Second operand 28 states. [2020-10-14 23:52:10,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:10,435 INFO L93 Difference]: Finished difference Result 645 states and 800 transitions. [2020-10-14 23:52:10,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-10-14 23:52:10,435 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 86 [2020-10-14 23:52:10,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:10,438 INFO L225 Difference]: With dead ends: 645 [2020-10-14 23:52:10,438 INFO L226 Difference]: Without dead ends: 385 [2020-10-14 23:52:10,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2669 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2706, Invalid=6996, Unknown=0, NotChecked=0, Total=9702 [2020-10-14 23:52:10,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-10-14 23:52:10,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 348. [2020-10-14 23:52:10,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-10-14 23:52:10,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 438 transitions. [2020-10-14 23:52:10,455 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 438 transitions. Word has length 86 [2020-10-14 23:52:10,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:10,455 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 438 transitions. [2020-10-14 23:52:10,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 23:52:10,455 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 438 transitions. [2020-10-14 23:52:10,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 23:52:10,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:10,456 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:10,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 23:52:10,457 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:10,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:10,457 INFO L82 PathProgramCache]: Analyzing trace with hash -578997694, now seen corresponding path program 40 times [2020-10-14 23:52:10,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:10,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836976529] [2020-10-14 23:52:10,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:10,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:10,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:10,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:10,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:10,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:10,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 23:52:10,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:52:10,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-14 23:52:10,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:10,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:10,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 23:52:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:52:10,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:11,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:11,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:11,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:11,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:11,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:11,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:52:11,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:11,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:11,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:52:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:52:11,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836976529] [2020-10-14 23:52:11,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:11,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 23:52:11,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802325458] [2020-10-14 23:52:11,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 23:52:11,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:11,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 23:52:11,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:52:11,261 INFO L87 Difference]: Start difference. First operand 348 states and 438 transitions. Second operand 28 states. [2020-10-14 23:52:11,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:11,555 INFO L93 Difference]: Finished difference Result 724 states and 923 transitions. [2020-10-14 23:52:11,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:52:11,558 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 86 [2020-10-14 23:52:11,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:11,560 INFO L225 Difference]: With dead ends: 724 [2020-10-14 23:52:11,560 INFO L226 Difference]: Without dead ends: 382 [2020-10-14 23:52:11,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:52:11,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-14 23:52:11,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 367. [2020-10-14 23:52:11,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-10-14 23:52:11,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 462 transitions. [2020-10-14 23:52:11,580 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 462 transitions. Word has length 86 [2020-10-14 23:52:11,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:11,580 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 462 transitions. [2020-10-14 23:52:11,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 23:52:11,580 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 462 transitions. [2020-10-14 23:52:11,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 23:52:11,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:11,581 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 23, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:11,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 23:52:11,582 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:11,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:11,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1614812230, now seen corresponding path program 41 times [2020-10-14 23:52:11,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:11,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706054590] [2020-10-14 23:52:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:11,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:11,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:11,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:11,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:11,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:11,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:11,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:12,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:12,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:12,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:12,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:12,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:12,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 23:52:12,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:52:12,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1157 [2020-10-14 23:52:12,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:12,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:12,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 23:52:12,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:12,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 23:52:12,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:13,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:13,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:13,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:13,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:13,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:13,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:52:13,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:13,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:13,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:13,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:13,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:13,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:13,152 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 923 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:52:13,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706054590] [2020-10-14 23:52:13,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:13,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 23:52:13,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013511828] [2020-10-14 23:52:13,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 23:52:13,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:13,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 23:52:13,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=481, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:52:13,154 INFO L87 Difference]: Start difference. First operand 367 states and 462 transitions. Second operand 29 states. [2020-10-14 23:52:15,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:15,056 INFO L93 Difference]: Finished difference Result 855 states and 1077 transitions. [2020-10-14 23:52:15,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-10-14 23:52:15,056 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 89 [2020-10-14 23:52:15,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:15,059 INFO L225 Difference]: With dead ends: 855 [2020-10-14 23:52:15,059 INFO L226 Difference]: Without dead ends: 493 [2020-10-14 23:52:15,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2905 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2931, Invalid=7575, Unknown=0, NotChecked=0, Total=10506 [2020-10-14 23:52:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-10-14 23:52:15,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 363. [2020-10-14 23:52:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-14 23:52:15,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 457 transitions. [2020-10-14 23:52:15,077 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 457 transitions. Word has length 89 [2020-10-14 23:52:15,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:15,077 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 457 transitions. [2020-10-14 23:52:15,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 23:52:15,078 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 457 transitions. [2020-10-14 23:52:15,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 23:52:15,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:15,078 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:15,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 23:52:15,079 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:15,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:15,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1356646792, now seen corresponding path program 42 times [2020-10-14 23:52:15,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:15,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118493781] [2020-10-14 23:52:15,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:15,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:15,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:15,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:15,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:15,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:15,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:15,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 23:52:15,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:52:15,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-14 23:52:15,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:15,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 23:52:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 23:52:15,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:15,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:15,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:15,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:15,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:15,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:15,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:52:15,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:15,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:15,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:15,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:52:15,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118493781] [2020-10-14 23:52:15,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:15,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 23:52:15,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766301715] [2020-10-14 23:52:15,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 23:52:15,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:15,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 23:52:15,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:52:15,942 INFO L87 Difference]: Start difference. First operand 363 states and 457 transitions. Second operand 29 states. [2020-10-14 23:52:16,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:16,234 INFO L93 Difference]: Finished difference Result 754 states and 961 transitions. [2020-10-14 23:52:16,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 23:52:16,234 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 89 [2020-10-14 23:52:16,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:16,236 INFO L225 Difference]: With dead ends: 754 [2020-10-14 23:52:16,236 INFO L226 Difference]: Without dead ends: 397 [2020-10-14 23:52:16,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:52:16,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-14 23:52:16,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 382. [2020-10-14 23:52:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-10-14 23:52:16,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 481 transitions. [2020-10-14 23:52:16,256 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 481 transitions. Word has length 89 [2020-10-14 23:52:16,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:16,256 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 481 transitions. [2020-10-14 23:52:16,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 23:52:16,257 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 481 transitions. [2020-10-14 23:52:16,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 23:52:16,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:16,257 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 24, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:16,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 23:52:16,258 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:16,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:16,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1505496124, now seen corresponding path program 43 times [2020-10-14 23:52:16,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:16,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91532091] [2020-10-14 23:52:16,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:16,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:16,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:16,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:16,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:16,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:16,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:16,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:16,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:16,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:16,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:17,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:17,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 23:52:17,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:52:17,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1248 [2020-10-14 23:52:17,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:17,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:17,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:52:17,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:17,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 23:52:17,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:17,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:17,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:17,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:17,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:17,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:17,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:52:17,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:17,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:17,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:17,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:52:17,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91532091] [2020-10-14 23:52:17,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:17,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 23:52:17,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111614520] [2020-10-14 23:52:17,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 23:52:17,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:17,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 23:52:17,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:52:17,982 INFO L87 Difference]: Start difference. First operand 382 states and 481 transitions. Second operand 30 states. [2020-10-14 23:52:18,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:18,340 INFO L93 Difference]: Finished difference Result 794 states and 1013 transitions. [2020-10-14 23:52:18,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 23:52:18,340 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 92 [2020-10-14 23:52:18,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:18,342 INFO L225 Difference]: With dead ends: 794 [2020-10-14 23:52:18,342 INFO L226 Difference]: Without dead ends: 418 [2020-10-14 23:52:18,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:52:18,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-14 23:52:18,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 403. [2020-10-14 23:52:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-14 23:52:18,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 509 transitions. [2020-10-14 23:52:18,363 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 509 transitions. Word has length 92 [2020-10-14 23:52:18,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:18,364 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 509 transitions. [2020-10-14 23:52:18,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 23:52:18,364 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 509 transitions. [2020-10-14 23:52:18,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 23:52:18,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:18,365 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 24, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:18,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 23:52:18,365 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:18,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:18,366 INFO L82 PathProgramCache]: Analyzing trace with hash 825271032, now seen corresponding path program 44 times [2020-10-14 23:52:18,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:18,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214790654] [2020-10-14 23:52:18,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:18,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:18,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:18,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:18,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:18,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:18,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:18,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:18,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:18,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:18,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:18,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:18,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:18,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:18,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:18,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:19,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:19,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:19,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:19,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:20,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:20,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:21,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:21,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 23:52:21,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:52:21,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3163 [2020-10-14 23:52:21,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:21,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:52:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 23:52:21,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:21,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:21,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:21,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:21,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:21,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:21,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:52:21,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:21,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:21,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:21,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:21,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:21,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:21,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 1073 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:52:21,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214790654] [2020-10-14 23:52:21,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:21,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 23:52:21,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512429072] [2020-10-14 23:52:21,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 23:52:21,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:21,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 23:52:21,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=513, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:52:21,985 INFO L87 Difference]: Start difference. First operand 403 states and 509 transitions. Second operand 30 states. [2020-10-14 23:52:24,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:24,086 INFO L93 Difference]: Finished difference Result 940 states and 1185 transitions. [2020-10-14 23:52:24,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2020-10-14 23:52:24,087 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 95 [2020-10-14 23:52:24,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:24,089 INFO L225 Difference]: With dead ends: 940 [2020-10-14 23:52:24,089 INFO L226 Difference]: Without dead ends: 541 [2020-10-14 23:52:24,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3151 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3165, Invalid=8177, Unknown=0, NotChecked=0, Total=11342 [2020-10-14 23:52:24,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-10-14 23:52:24,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 397. [2020-10-14 23:52:24,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-14 23:52:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 500 transitions. [2020-10-14 23:52:24,114 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 500 transitions. Word has length 95 [2020-10-14 23:52:24,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:24,114 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 500 transitions. [2020-10-14 23:52:24,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 23:52:24,114 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 500 transitions. [2020-10-14 23:52:24,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 23:52:24,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:24,115 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 25, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:24,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 23:52:24,115 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:24,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:24,116 INFO L82 PathProgramCache]: Analyzing trace with hash -454592646, now seen corresponding path program 45 times [2020-10-14 23:52:24,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:24,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176231470] [2020-10-14 23:52:24,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:24,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:24,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:24,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:24,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:24,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:24,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:24,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:24,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:24,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:25,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:25,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:25,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 23:52:25,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:52:25,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1401 [2020-10-14 23:52:25,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:25,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:25,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 23:52:25,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:25,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 23:52:25,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:25,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:25,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:25,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:25,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:25,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:25,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:52:25,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:25,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:25,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:25,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:25,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:25,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:52:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 1078 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:52:25,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176231470] [2020-10-14 23:52:25,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:25,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 23:52:25,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213198010] [2020-10-14 23:52:25,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 23:52:25,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:25,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 23:52:25,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=546, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:52:25,968 INFO L87 Difference]: Start difference. First operand 397 states and 500 transitions. Second operand 31 states. [2020-10-14 23:52:26,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:26,919 INFO L93 Difference]: Finished difference Result 985 states and 1230 transitions. [2020-10-14 23:52:26,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-14 23:52:26,924 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 95 [2020-10-14 23:52:26,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:26,926 INFO L225 Difference]: With dead ends: 985 [2020-10-14 23:52:26,926 INFO L226 Difference]: Without dead ends: 496 [2020-10-14 23:52:26,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1146, Invalid=2276, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 23:52:26,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-10-14 23:52:26,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 288. [2020-10-14 23:52:26,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-14 23:52:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 355 transitions. [2020-10-14 23:52:26,947 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 355 transitions. Word has length 95 [2020-10-14 23:52:26,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:26,948 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 355 transitions. [2020-10-14 23:52:26,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 23:52:26,948 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 355 transitions. [2020-10-14 23:52:26,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 23:52:26,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:26,949 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:26,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 23:52:26,949 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:26,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:26,949 INFO L82 PathProgramCache]: Analyzing trace with hash -196427208, now seen corresponding path program 46 times [2020-10-14 23:52:26,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:26,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935155795] [2020-10-14 23:52:26,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:26,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:27,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:27,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:27,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:27,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:27,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:27,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 23:52:27,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:52:27,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-10-14 23:52:27,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:27,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 23:52:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 23:52:27,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:28,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:28,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:28,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:28,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:28,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:28,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:52:28,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:28,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:28,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:28,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:52:28,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935155795] [2020-10-14 23:52:28,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:28,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 23:52:28,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582384186] [2020-10-14 23:52:28,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 23:52:28,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:28,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 23:52:28,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:52:28,029 INFO L87 Difference]: Start difference. First operand 288 states and 355 transitions. Second operand 31 states. [2020-10-14 23:52:28,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:28,253 INFO L93 Difference]: Finished difference Result 594 states and 741 transitions. [2020-10-14 23:52:28,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 23:52:28,253 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 95 [2020-10-14 23:52:28,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:28,254 INFO L225 Difference]: With dead ends: 594 [2020-10-14 23:52:28,254 INFO L226 Difference]: Without dead ends: 312 [2020-10-14 23:52:28,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:52:28,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-14 23:52:28,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 301. [2020-10-14 23:52:28,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-10-14 23:52:28,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 371 transitions. [2020-10-14 23:52:28,274 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 371 transitions. Word has length 95 [2020-10-14 23:52:28,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:28,274 INFO L479 AbstractCegarLoop]: Abstraction has 301 states and 371 transitions. [2020-10-14 23:52:28,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 23:52:28,275 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 371 transitions. [2020-10-14 23:52:28,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 23:52:28,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:28,275 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 26, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:28,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 23:52:28,276 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:28,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:28,276 INFO L82 PathProgramCache]: Analyzing trace with hash 994299908, now seen corresponding path program 47 times [2020-10-14 23:52:28,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:28,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637501013] [2020-10-14 23:52:28,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:28,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:28,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:28,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:28,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:28,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:28,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:28,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:28,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:29,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:29,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:29,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:29,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 23:52:29,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:52:29,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1469 [2020-10-14 23:52:29,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:29,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 23:52:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 23:52:29,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:30,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:30,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:30,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:30,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:30,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:30,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:52:30,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:30,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:30,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:30,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:30,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:30,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:52:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1160 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:52:30,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637501013] [2020-10-14 23:52:30,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:30,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 23:52:30,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775395332] [2020-10-14 23:52:30,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 23:52:30,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:30,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 23:52:30,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=580, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:52:30,271 INFO L87 Difference]: Start difference. First operand 301 states and 371 transitions. Second operand 32 states. [2020-10-14 23:52:32,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:32,862 INFO L93 Difference]: Finished difference Result 733 states and 908 transitions. [2020-10-14 23:52:32,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2020-10-14 23:52:32,862 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 98 [2020-10-14 23:52:32,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:32,864 INFO L225 Difference]: With dead ends: 733 [2020-10-14 23:52:32,864 INFO L226 Difference]: Without dead ends: 437 [2020-10-14 23:52:32,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3673 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3660, Invalid=9450, Unknown=0, NotChecked=0, Total=13110 [2020-10-14 23:52:32,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-14 23:52:32,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 396. [2020-10-14 23:52:32,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-10-14 23:52:32,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 498 transitions. [2020-10-14 23:52:32,886 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 498 transitions. Word has length 98 [2020-10-14 23:52:32,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:32,886 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 498 transitions. [2020-10-14 23:52:32,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 23:52:32,887 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 498 transitions. [2020-10-14 23:52:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 23:52:32,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:32,887 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:32,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 23:52:32,888 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:32,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:32,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1252465346, now seen corresponding path program 48 times [2020-10-14 23:52:32,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:32,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468401784] [2020-10-14 23:52:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:32,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:33,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:33,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:33,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:33,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:33,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 23:52:33,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:52:33,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-14 23:52:33,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:33,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:33,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 23:52:33,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:33,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 23:52:33,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:33,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:33,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:33,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:33,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:33,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:33,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:52:33,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:33,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:33,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:33,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:33,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:33,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:33,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:52:33,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468401784] [2020-10-14 23:52:33,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:33,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 23:52:33,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482991678] [2020-10-14 23:52:33,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 23:52:33,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:33,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 23:52:33,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:52:33,914 INFO L87 Difference]: Start difference. First operand 396 states and 498 transitions. Second operand 32 states. [2020-10-14 23:52:34,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:34,164 INFO L93 Difference]: Finished difference Result 820 states and 1043 transitions. [2020-10-14 23:52:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 23:52:34,165 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 98 [2020-10-14 23:52:34,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:34,167 INFO L225 Difference]: With dead ends: 820 [2020-10-14 23:52:34,167 INFO L226 Difference]: Without dead ends: 430 [2020-10-14 23:52:34,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:52:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-10-14 23:52:34,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 415. [2020-10-14 23:52:34,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-10-14 23:52:34,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 522 transitions. [2020-10-14 23:52:34,191 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 522 transitions. Word has length 98 [2020-10-14 23:52:34,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:34,192 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 522 transitions. [2020-10-14 23:52:34,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 23:52:34,192 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 522 transitions. [2020-10-14 23:52:34,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 23:52:34,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:34,193 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 27, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:34,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 23:52:34,193 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:34,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:34,193 INFO L82 PathProgramCache]: Analyzing trace with hash 531051322, now seen corresponding path program 49 times [2020-10-14 23:52:34,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:34,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366531389] [2020-10-14 23:52:34,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:34,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:34,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:34,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:34,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:34,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:34,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:34,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:34,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:34,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:35,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:35,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:35,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 23:52:35,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:52:35,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1517 [2020-10-14 23:52:35,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:35,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 23:52:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:35,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 23:52:35,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:36,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:36,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:36,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:36,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:36,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:36,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:52:36,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:36,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:36,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:36,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:52:36,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366531389] [2020-10-14 23:52:36,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:36,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 23:52:36,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215295645] [2020-10-14 23:52:36,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 23:52:36,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:36,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 23:52:36,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:52:36,273 INFO L87 Difference]: Start difference. First operand 415 states and 522 transitions. Second operand 33 states. [2020-10-14 23:52:36,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:36,670 INFO L93 Difference]: Finished difference Result 860 states and 1095 transitions. [2020-10-14 23:52:36,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 23:52:36,671 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 101 [2020-10-14 23:52:36,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:36,673 INFO L225 Difference]: With dead ends: 860 [2020-10-14 23:52:36,673 INFO L226 Difference]: Without dead ends: 451 [2020-10-14 23:52:36,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:52:36,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-14 23:52:36,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 436. [2020-10-14 23:52:36,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-14 23:52:36,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 550 transitions. [2020-10-14 23:52:36,696 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 550 transitions. Word has length 101 [2020-10-14 23:52:36,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:36,696 INFO L479 AbstractCegarLoop]: Abstraction has 436 states and 550 transitions. [2020-10-14 23:52:36,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 23:52:36,697 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 550 transitions. [2020-10-14 23:52:36,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 23:52:36,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:36,697 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 27, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:36,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 23:52:36,698 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:36,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:36,698 INFO L82 PathProgramCache]: Analyzing trace with hash 902211522, now seen corresponding path program 50 times [2020-10-14 23:52:36,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:36,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12906658] [2020-10-14 23:52:36,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:36,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:36,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:36,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:36,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:36,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:36,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:36,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:36,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:37,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:37,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:37,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:37,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:37,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:37,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:37,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:37,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:37,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:37,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:38,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:39,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:40,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:40,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:40,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 23:52:40,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:52:40,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3657 [2020-10-14 23:52:40,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:40,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:40,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 23:52:40,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:40,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 23:52:40,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:40,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:40,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:40,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:40,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:40,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:40,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:52:40,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:40,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:40,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:40,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:40,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:40,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1328 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:52:40,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12906658] [2020-10-14 23:52:40,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:40,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 23:52:40,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949774778] [2020-10-14 23:52:40,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 23:52:40,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:40,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 23:52:40,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=615, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:52:40,887 INFO L87 Difference]: Start difference. First operand 436 states and 550 transitions. Second operand 33 states. [2020-10-14 23:52:43,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:43,473 INFO L93 Difference]: Finished difference Result 1017 states and 1281 transitions. [2020-10-14 23:52:43,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2020-10-14 23:52:43,473 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 104 [2020-10-14 23:52:43,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:43,475 INFO L225 Difference]: With dead ends: 1017 [2020-10-14 23:52:43,476 INFO L226 Difference]: Without dead ends: 585 [2020-10-14 23:52:43,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3949 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3921, Invalid=10121, Unknown=0, NotChecked=0, Total=14042 [2020-10-14 23:52:43,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-10-14 23:52:43,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 430. [2020-10-14 23:52:43,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-14 23:52:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 541 transitions. [2020-10-14 23:52:43,498 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 541 transitions. Word has length 104 [2020-10-14 23:52:43,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:43,498 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 541 transitions. [2020-10-14 23:52:43,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 23:52:43,498 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 541 transitions. [2020-10-14 23:52:43,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 23:52:43,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:43,499 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:43,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 23:52:43,499 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:43,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:43,499 INFO L82 PathProgramCache]: Analyzing trace with hash -377652156, now seen corresponding path program 51 times [2020-10-14 23:52:43,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:43,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167533526] [2020-10-14 23:52:43,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:43,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:43,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:43,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:43,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:43,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:43,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:43,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:43,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:43,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:44,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:44,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:45,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:45,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 23:52:45,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:52:45,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1629 [2020-10-14 23:52:45,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:45,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 23:52:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 23:52:45,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:45,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:45,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:45,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:45,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:45,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:45,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:52:45,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:45,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:45,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:45,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:45,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:45,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1333 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:52:45,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167533526] [2020-10-14 23:52:45,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:45,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 23:52:45,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991284062] [2020-10-14 23:52:45,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 23:52:45,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:45,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 23:52:45,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=651, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:52:45,723 INFO L87 Difference]: Start difference. First operand 430 states and 541 transitions. Second operand 34 states. [2020-10-14 23:52:48,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:48,632 INFO L93 Difference]: Finished difference Result 1002 states and 1261 transitions. [2020-10-14 23:52:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-10-14 23:52:48,632 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 104 [2020-10-14 23:52:48,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:48,634 INFO L225 Difference]: With dead ends: 1002 [2020-10-14 23:52:48,634 INFO L226 Difference]: Without dead ends: 577 [2020-10-14 23:52:48,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4235 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4191, Invalid=10815, Unknown=0, NotChecked=0, Total=15006 [2020-10-14 23:52:48,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-10-14 23:52:48,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 426. [2020-10-14 23:52:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-14 23:52:48,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 536 transitions. [2020-10-14 23:52:48,663 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 536 transitions. Word has length 104 [2020-10-14 23:52:48,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:48,664 INFO L479 AbstractCegarLoop]: Abstraction has 426 states and 536 transitions. [2020-10-14 23:52:48,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 23:52:48,664 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 536 transitions. [2020-10-14 23:52:48,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 23:52:48,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:48,665 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:48,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 23:52:48,665 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:48,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:48,665 INFO L82 PathProgramCache]: Analyzing trace with hash -119486718, now seen corresponding path program 52 times [2020-10-14 23:52:48,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:48,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743036217] [2020-10-14 23:52:48,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:48,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:48,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:49,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:49,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:49,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:49,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:49,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 23:52:49,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:52:49,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 897 [2020-10-14 23:52:49,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:49,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 23:52:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 23:52:49,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:50,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:50,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:50,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:50,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:50,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:50,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:52:50,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:50,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:52:50,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743036217] [2020-10-14 23:52:50,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:50,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 23:52:50,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775565146] [2020-10-14 23:52:50,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 23:52:50,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:50,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 23:52:50,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:52:50,206 INFO L87 Difference]: Start difference. First operand 426 states and 536 transitions. Second operand 34 states. [2020-10-14 23:52:50,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:50,615 INFO L93 Difference]: Finished difference Result 880 states and 1119 transitions. [2020-10-14 23:52:50,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 23:52:50,615 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 104 [2020-10-14 23:52:50,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:50,617 INFO L225 Difference]: With dead ends: 880 [2020-10-14 23:52:50,617 INFO L226 Difference]: Without dead ends: 460 [2020-10-14 23:52:50,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:52:50,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-14 23:52:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 445. [2020-10-14 23:52:50,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-10-14 23:52:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 560 transitions. [2020-10-14 23:52:50,635 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 560 transitions. Word has length 104 [2020-10-14 23:52:50,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:50,635 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 560 transitions. [2020-10-14 23:52:50,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 23:52:50,635 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 560 transitions. [2020-10-14 23:52:50,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 23:52:50,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:50,636 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 29, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:50,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 23:52:50,636 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:50,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:50,636 INFO L82 PathProgramCache]: Analyzing trace with hash -384098566, now seen corresponding path program 53 times [2020-10-14 23:52:50,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:50,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657071341] [2020-10-14 23:52:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:50,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:50,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:50,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:50,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:50,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:50,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:50,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:51,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:51,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:51,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:52,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:52,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 23:52:52,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:52:52,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1453 [2020-10-14 23:52:52,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:52,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:52,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 23:52:52,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:52,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 23:52:52,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:52,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:52,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:52,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:52,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:52,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:52,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:52:52,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:52,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:52,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:52:52,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657071341] [2020-10-14 23:52:52,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:52,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 23:52:52,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752504060] [2020-10-14 23:52:52,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 23:52:52,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:52,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 23:52:52,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:52:52,743 INFO L87 Difference]: Start difference. First operand 445 states and 560 transitions. Second operand 35 states. [2020-10-14 23:52:53,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:52:53,007 INFO L93 Difference]: Finished difference Result 920 states and 1171 transitions. [2020-10-14 23:52:53,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 23:52:53,007 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 107 [2020-10-14 23:52:53,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:52:53,009 INFO L225 Difference]: With dead ends: 920 [2020-10-14 23:52:53,010 INFO L226 Difference]: Without dead ends: 481 [2020-10-14 23:52:53,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:52:53,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-14 23:52:53,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 466. [2020-10-14 23:52:53,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-14 23:52:53,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 588 transitions. [2020-10-14 23:52:53,032 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 588 transitions. Word has length 107 [2020-10-14 23:52:53,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:52:53,032 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 588 transitions. [2020-10-14 23:52:53,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 23:52:53,033 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 588 transitions. [2020-10-14 23:52:53,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 23:52:53,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:52:53,033 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 29, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:52:53,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 23:52:53,034 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:52:53,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:52:53,034 INFO L82 PathProgramCache]: Analyzing trace with hash 2124293122, now seen corresponding path program 54 times [2020-10-14 23:52:53,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:52:53,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967435167] [2020-10-14 23:52:53,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:52:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:53,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:53,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:53,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:53,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:53,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:53,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:53,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:53,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:53,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:53,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:53,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:54,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:54,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:54,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:54,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:54,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:55,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:55,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:55,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:57,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:57,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 23:52:57,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:52:57,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4324 [2020-10-14 23:52:57,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:57,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 23:52:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:52:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 23:52:57,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:57,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:52:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:52:57,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:52:57,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:52:57,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:52:57,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:52:57,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:52:57,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:52:57,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:52:57,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:52:57,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:52:57,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:52:57,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:52:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1513 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:52:57,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967435167] [2020-10-14 23:52:57,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:52:57,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 23:52:57,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205787659] [2020-10-14 23:52:57,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 23:52:57,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:52:57,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 23:52:57,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=688, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:52:57,988 INFO L87 Difference]: Start difference. First operand 466 states and 588 transitions. Second operand 35 states. [2020-10-14 23:53:01,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:01,001 INFO L93 Difference]: Finished difference Result 1087 states and 1369 transitions. [2020-10-14 23:53:01,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2020-10-14 23:53:01,002 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 110 [2020-10-14 23:53:01,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:01,004 INFO L225 Difference]: With dead ends: 1087 [2020-10-14 23:53:01,004 INFO L226 Difference]: Without dead ends: 625 [2020-10-14 23:53:01,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4531 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4470, Invalid=11532, Unknown=0, NotChecked=0, Total=16002 [2020-10-14 23:53:01,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2020-10-14 23:53:01,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 460. [2020-10-14 23:53:01,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-14 23:53:01,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 579 transitions. [2020-10-14 23:53:01,025 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 579 transitions. Word has length 110 [2020-10-14 23:53:01,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:01,026 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 579 transitions. [2020-10-14 23:53:01,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 23:53:01,026 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 579 transitions. [2020-10-14 23:53:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 23:53:01,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:01,026 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:01,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 23:53:01,027 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:01,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:01,027 INFO L82 PathProgramCache]: Analyzing trace with hash 844429444, now seen corresponding path program 55 times [2020-10-14 23:53:01,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:01,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005104606] [2020-10-14 23:53:01,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:01,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:01,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:01,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:01,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:01,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:01,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:01,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:01,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:01,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:01,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:02,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:02,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 23:53:02,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:53:02,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1584 [2020-10-14 23:53:02,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:02,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 23:53:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:53:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 23:53:02,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:03,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:03,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:03,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:03,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:53:03,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:03,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:03,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:03,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:03,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:03,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:03,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:03,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:03,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:53:03,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005104606] [2020-10-14 23:53:03,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:03,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 23:53:03,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901015225] [2020-10-14 23:53:03,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 23:53:03,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:03,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 23:53:03,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=726, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:53:03,271 INFO L87 Difference]: Start difference. First operand 460 states and 579 transitions. Second operand 36 states. [2020-10-14 23:53:04,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:04,598 INFO L93 Difference]: Finished difference Result 1141 states and 1423 transitions. [2020-10-14 23:53:04,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-14 23:53:04,599 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 110 [2020-10-14 23:53:04,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:04,603 INFO L225 Difference]: With dead ends: 1141 [2020-10-14 23:53:04,603 INFO L226 Difference]: Without dead ends: 574 [2020-10-14 23:53:04,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1596, Invalid=3096, Unknown=0, NotChecked=0, Total=4692 [2020-10-14 23:53:04,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-10-14 23:53:04,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 333. [2020-10-14 23:53:04,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-14 23:53:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 410 transitions. [2020-10-14 23:53:04,627 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 410 transitions. Word has length 110 [2020-10-14 23:53:04,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:04,627 INFO L479 AbstractCegarLoop]: Abstraction has 333 states and 410 transitions. [2020-10-14 23:53:04,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 23:53:04,628 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 410 transitions. [2020-10-14 23:53:04,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 23:53:04,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:04,628 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:04,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 23:53:04,629 INFO L427 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:04,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:04,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1102594882, now seen corresponding path program 56 times [2020-10-14 23:53:04,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:04,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102691902] [2020-10-14 23:53:04,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:04,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:04,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:04,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:04,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:04,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:05,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:05,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 23:53:05,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:53:05,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-14 23:53:05,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:05,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 23:53:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:53:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 23:53:05,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:05,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:05,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:05,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:05,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:53:05,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:05,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:05,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:05,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:05,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:05,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:53:05,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102691902] [2020-10-14 23:53:05,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:05,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 23:53:05,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355712127] [2020-10-14 23:53:05,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 23:53:05,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:05,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 23:53:05,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:53:05,930 INFO L87 Difference]: Start difference. First operand 333 states and 410 transitions. Second operand 36 states. [2020-10-14 23:53:06,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:06,276 INFO L93 Difference]: Finished difference Result 684 states and 851 transitions. [2020-10-14 23:53:06,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 23:53:06,277 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 110 [2020-10-14 23:53:06,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:06,278 INFO L225 Difference]: With dead ends: 684 [2020-10-14 23:53:06,279 INFO L226 Difference]: Without dead ends: 357 [2020-10-14 23:53:06,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:53:06,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-14 23:53:06,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 346. [2020-10-14 23:53:06,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-14 23:53:06,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 426 transitions. [2020-10-14 23:53:06,296 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 426 transitions. Word has length 110 [2020-10-14 23:53:06,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:06,297 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 426 transitions. [2020-10-14 23:53:06,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 23:53:06,297 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 426 transitions. [2020-10-14 23:53:06,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 23:53:06,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:06,298 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 31, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:06,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 23:53:06,298 INFO L427 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:06,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:06,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1788921158, now seen corresponding path program 57 times [2020-10-14 23:53:06,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:06,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371635946] [2020-10-14 23:53:06,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:06,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:06,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:06,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:06,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:06,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:06,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:06,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:06,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:07,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:07,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:08,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:08,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 23:53:08,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:53:08,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1755 [2020-10-14 23:53:08,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:08,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 23:53:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:53:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 23:53:08,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:08,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:08,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:08,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:08,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:53:08,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:08,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:08,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:08,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:08,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:08,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:08,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:08,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:53:08,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371635946] [2020-10-14 23:53:08,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:08,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 23:53:08,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221388472] [2020-10-14 23:53:08,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 23:53:08,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:08,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 23:53:08,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:53:08,800 INFO L87 Difference]: Start difference. First operand 346 states and 426 transitions. Second operand 37 states. [2020-10-14 23:53:09,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:09,082 INFO L93 Difference]: Finished difference Result 712 states and 887 transitions. [2020-10-14 23:53:09,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 23:53:09,082 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 113 [2020-10-14 23:53:09,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:09,084 INFO L225 Difference]: With dead ends: 712 [2020-10-14 23:53:09,084 INFO L226 Difference]: Without dead ends: 372 [2020-10-14 23:53:09,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:53:09,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-14 23:53:09,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 361. [2020-10-14 23:53:09,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-10-14 23:53:09,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 446 transitions. [2020-10-14 23:53:09,102 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 446 transitions. Word has length 113 [2020-10-14 23:53:09,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:09,102 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 446 transitions. [2020-10-14 23:53:09,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 23:53:09,102 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 446 transitions. [2020-10-14 23:53:09,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 23:53:09,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:09,103 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 31, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:09,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 23:53:09,103 INFO L427 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:09,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:09,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1215787074, now seen corresponding path program 58 times [2020-10-14 23:53:09,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:09,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738920722] [2020-10-14 23:53:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:09,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:09,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:09,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:09,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:09,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:09,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:09,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:09,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:09,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:09,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:09,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:09,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:10,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:10,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:10,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:10,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:10,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:11,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:11,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:12,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:13,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:13,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 23:53:13,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:53:13,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4583 [2020-10-14 23:53:13,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:13,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:13,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 23:53:13,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:53:13,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 23:53:13,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:14,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:14,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:14,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:14,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:53:14,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:14,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:53:14,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:14,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:14,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:14,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:14,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:14,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:14,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1710 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:53:14,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738920722] [2020-10-14 23:53:14,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:14,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 23:53:14,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839763035] [2020-10-14 23:53:14,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 23:53:14,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:14,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 23:53:14,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=567, Invalid=765, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:53:14,382 INFO L87 Difference]: Start difference. First operand 361 states and 446 transitions. Second operand 37 states. [2020-10-14 23:53:17,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:17,561 INFO L93 Difference]: Finished difference Result 880 states and 1090 transitions. [2020-10-14 23:53:17,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2020-10-14 23:53:17,562 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 116 [2020-10-14 23:53:17,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:17,565 INFO L225 Difference]: With dead ends: 880 [2020-10-14 23:53:17,565 INFO L226 Difference]: Without dead ends: 523 [2020-10-14 23:53:17,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5153 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5055, Invalid=13035, Unknown=0, NotChecked=0, Total=18090 [2020-10-14 23:53:17,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-10-14 23:53:17,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 475. [2020-10-14 23:53:17,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-14 23:53:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 597 transitions. [2020-10-14 23:53:17,594 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 597 transitions. Word has length 116 [2020-10-14 23:53:17,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:17,595 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 597 transitions. [2020-10-14 23:53:17,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 23:53:17,595 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 597 transitions. [2020-10-14 23:53:17,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 23:53:17,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:17,596 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 32, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:17,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-14 23:53:17,596 INFO L427 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:17,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:17,596 INFO L82 PathProgramCache]: Analyzing trace with hash -64076604, now seen corresponding path program 59 times [2020-10-14 23:53:17,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:17,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087979219] [2020-10-14 23:53:17,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:17,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:17,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:17,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:17,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:17,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:17,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:17,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:18,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:18,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:18,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:19,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:19,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:19,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 23:53:19,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:53:19,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2138 [2020-10-14 23:53:19,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:19,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:19,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 23:53:19,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:53:19,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 23:53:19,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:20,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:20,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:20,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:20,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:53:20,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:20,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:20,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:20,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:20,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1715 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:53:20,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087979219] [2020-10-14 23:53:20,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:20,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 23:53:20,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333703357] [2020-10-14 23:53:20,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 23:53:20,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:20,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 23:53:20,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=805, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:53:20,503 INFO L87 Difference]: Start difference. First operand 475 states and 597 transitions. Second operand 38 states. [2020-10-14 23:53:21,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:21,941 INFO L93 Difference]: Finished difference Result 1183 states and 1473 transitions. [2020-10-14 23:53:21,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-14 23:53:21,942 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 116 [2020-10-14 23:53:21,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:21,944 INFO L225 Difference]: With dead ends: 1183 [2020-10-14 23:53:21,944 INFO L226 Difference]: Without dead ends: 595 [2020-10-14 23:53:21,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1797, Invalid=3459, Unknown=0, NotChecked=0, Total=5256 [2020-10-14 23:53:21,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2020-10-14 23:53:21,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 351. [2020-10-14 23:53:21,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-10-14 23:53:21,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 432 transitions. [2020-10-14 23:53:21,964 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 432 transitions. Word has length 116 [2020-10-14 23:53:21,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:21,964 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 432 transitions. [2020-10-14 23:53:21,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 23:53:21,965 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 432 transitions. [2020-10-14 23:53:21,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 23:53:21,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:21,965 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:21,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-14 23:53:21,965 INFO L427 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:21,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:21,966 INFO L82 PathProgramCache]: Analyzing trace with hash 194088834, now seen corresponding path program 60 times [2020-10-14 23:53:21,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:21,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660633619] [2020-10-14 23:53:21,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:21,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:21,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:22,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:22,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:22,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:22,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:22,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 23:53:22,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:53:22,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-14 23:53:22,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:22,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:22,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 23:53:22,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:53:22,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 23:53:22,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:23,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:23,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:23,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:23,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:53:23,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:23,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:23,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:23,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:23,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:53:23,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660633619] [2020-10-14 23:53:23,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:23,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 23:53:23,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053464489] [2020-10-14 23:53:23,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 23:53:23,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:23,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 23:53:23,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:53:23,395 INFO L87 Difference]: Start difference. First operand 351 states and 432 transitions. Second operand 38 states. [2020-10-14 23:53:23,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:23,766 INFO L93 Difference]: Finished difference Result 720 states and 895 transitions. [2020-10-14 23:53:23,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 23:53:23,767 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 116 [2020-10-14 23:53:23,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:23,768 INFO L225 Difference]: With dead ends: 720 [2020-10-14 23:53:23,769 INFO L226 Difference]: Without dead ends: 375 [2020-10-14 23:53:23,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:53:23,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-14 23:53:23,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 364. [2020-10-14 23:53:23,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-14 23:53:23,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 448 transitions. [2020-10-14 23:53:23,788 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 448 transitions. Word has length 116 [2020-10-14 23:53:23,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:23,788 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 448 transitions. [2020-10-14 23:53:23,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 23:53:23,788 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 448 transitions. [2020-10-14 23:53:23,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 23:53:23,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:23,789 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 33, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:23,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-14 23:53:23,789 INFO L427 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:23,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:23,789 INFO L82 PathProgramCache]: Analyzing trace with hash -208697734, now seen corresponding path program 61 times [2020-10-14 23:53:23,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:23,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133662234] [2020-10-14 23:53:23,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:23,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:23,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:23,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:23,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:23,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:24,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:24,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:24,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:24,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:24,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:25,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:25,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:25,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 23:53:25,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:53:25,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1916 [2020-10-14 23:53:25,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:25,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:25,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 23:53:25,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:53:25,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 23:53:25,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:26,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:26,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:26,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:26,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:53:26,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:26,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:26,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:26,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:26,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:53:26,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133662234] [2020-10-14 23:53:26,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:26,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-14 23:53:26,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390518219] [2020-10-14 23:53:26,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-14 23:53:26,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:26,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-14 23:53:26,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:53:26,550 INFO L87 Difference]: Start difference. First operand 364 states and 448 transitions. Second operand 39 states. [2020-10-14 23:53:26,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:26,878 INFO L93 Difference]: Finished difference Result 748 states and 931 transitions. [2020-10-14 23:53:26,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 23:53:26,878 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 119 [2020-10-14 23:53:26,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:26,880 INFO L225 Difference]: With dead ends: 748 [2020-10-14 23:53:26,880 INFO L226 Difference]: Without dead ends: 390 [2020-10-14 23:53:26,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:53:26,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-14 23:53:26,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 379. [2020-10-14 23:53:26,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-10-14 23:53:26,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 468 transitions. [2020-10-14 23:53:26,904 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 468 transitions. Word has length 119 [2020-10-14 23:53:26,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:26,904 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 468 transitions. [2020-10-14 23:53:26,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-14 23:53:26,904 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 468 transitions. [2020-10-14 23:53:26,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 23:53:26,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:26,905 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 33, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:26,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-14 23:53:26,905 INFO L427 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:26,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:26,905 INFO L82 PathProgramCache]: Analyzing trace with hash 515280002, now seen corresponding path program 62 times [2020-10-14 23:53:26,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:26,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833368377] [2020-10-14 23:53:26,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:26,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:26,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:26,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:26,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:27,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:27,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:27,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:27,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:27,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:27,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:28,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:28,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:28,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:28,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:29,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:29,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:30,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:30,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:30,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:31,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:31,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 23:53:31,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:53:31,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4685 [2020-10-14 23:53:31,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:31,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:31,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 23:53:31,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:53:31,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 23:53:31,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:32,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:32,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:32,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:32,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:53:32,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:32,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:32,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:32,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:32,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:32,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:32,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:32,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 0 proven. 1919 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:53:32,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833368377] [2020-10-14 23:53:32,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:32,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-14 23:53:32,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906751299] [2020-10-14 23:53:32,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-14 23:53:32,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:32,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-14 23:53:32,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=636, Invalid=846, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:53:32,403 INFO L87 Difference]: Start difference. First operand 379 states and 468 transitions. Second operand 39 states. [2020-10-14 23:53:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:36,095 INFO L93 Difference]: Finished difference Result 924 states and 1144 transitions. [2020-10-14 23:53:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2020-10-14 23:53:36,095 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 122 [2020-10-14 23:53:36,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:36,097 INFO L225 Difference]: With dead ends: 924 [2020-10-14 23:53:36,098 INFO L226 Difference]: Without dead ends: 549 [2020-10-14 23:53:36,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5815 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5676, Invalid=14630, Unknown=0, NotChecked=0, Total=20306 [2020-10-14 23:53:36,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-10-14 23:53:36,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 499. [2020-10-14 23:53:36,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-10-14 23:53:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 627 transitions. [2020-10-14 23:53:36,124 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 627 transitions. Word has length 122 [2020-10-14 23:53:36,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:36,124 INFO L479 AbstractCegarLoop]: Abstraction has 499 states and 627 transitions. [2020-10-14 23:53:36,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-14 23:53:36,124 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 627 transitions. [2020-10-14 23:53:36,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 23:53:36,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:36,125 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 34, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:36,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-14 23:53:36,125 INFO L427 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:36,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:36,126 INFO L82 PathProgramCache]: Analyzing trace with hash -764583676, now seen corresponding path program 63 times [2020-10-14 23:53:36,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:36,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124432843] [2020-10-14 23:53:36,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:36,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:36,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:36,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:36,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:36,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:36,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:36,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:36,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:36,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:37,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:38,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:38,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 23:53:38,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:53:38,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1995 [2020-10-14 23:53:38,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:38,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:38,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 23:53:38,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:53:38,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 23:53:38,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:39,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:39,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:39,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:39,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:53:39,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:39,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:39,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:39,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:39,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:53:39,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124432843] [2020-10-14 23:53:39,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:39,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 23:53:39,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744983611] [2020-10-14 23:53:39,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 23:53:39,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:39,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 23:53:39,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 23:53:39,026 INFO L87 Difference]: Start difference. First operand 499 states and 627 transitions. Second operand 40 states. [2020-10-14 23:53:39,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:39,327 INFO L93 Difference]: Finished difference Result 1028 states and 1305 transitions. [2020-10-14 23:53:39,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 23:53:39,328 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 122 [2020-10-14 23:53:39,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:39,330 INFO L225 Difference]: With dead ends: 1028 [2020-10-14 23:53:39,330 INFO L226 Difference]: Without dead ends: 535 [2020-10-14 23:53:39,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 23:53:39,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-10-14 23:53:39,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 520. [2020-10-14 23:53:39,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-10-14 23:53:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 655 transitions. [2020-10-14 23:53:39,359 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 655 transitions. Word has length 122 [2020-10-14 23:53:39,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:39,359 INFO L479 AbstractCegarLoop]: Abstraction has 520 states and 655 transitions. [2020-10-14 23:53:39,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 23:53:39,359 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 655 transitions. [2020-10-14 23:53:39,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 23:53:39,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:39,360 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 34, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:39,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-14 23:53:39,360 INFO L427 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:39,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:39,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1511075256, now seen corresponding path program 64 times [2020-10-14 23:53:39,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:39,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872698333] [2020-10-14 23:53:39,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:39,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:39,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:39,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:39,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:39,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:39,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:39,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:39,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:39,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:39,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:40,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:40,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:40,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:40,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:40,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:40,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:41,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:41,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:42,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:43,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:44,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:44,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:44,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 23:53:44,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:53:44,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 23:53:44,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:44,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 23:53:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:53:44,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 23:53:44,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:45,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:45,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:45,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:45,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:53:45,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:45,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:45,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:45,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:45,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:53:45,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872698333] [2020-10-14 23:53:45,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:45,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 23:53:45,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172534037] [2020-10-14 23:53:45,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 23:53:45,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:45,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 23:53:45,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=888, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 23:53:45,221 INFO L87 Difference]: Start difference. First operand 520 states and 655 transitions. Second operand 40 states. [2020-10-14 23:53:46,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:46,755 INFO L93 Difference]: Finished difference Result 1299 states and 1619 transitions. [2020-10-14 23:53:46,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-14 23:53:46,763 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 125 [2020-10-14 23:53:46,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:46,766 INFO L225 Difference]: With dead ends: 1299 [2020-10-14 23:53:46,766 INFO L226 Difference]: Without dead ends: 653 [2020-10-14 23:53:46,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2010, Invalid=3842, Unknown=0, NotChecked=0, Total=5852 [2020-10-14 23:53:46,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-10-14 23:53:46,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 382. [2020-10-14 23:53:46,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-10-14 23:53:46,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 470 transitions. [2020-10-14 23:53:46,797 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 470 transitions. Word has length 125 [2020-10-14 23:53:46,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:46,798 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 470 transitions. [2020-10-14 23:53:46,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 23:53:46,798 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 470 transitions. [2020-10-14 23:53:46,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 23:53:46,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:46,799 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 35, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:46,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-14 23:53:46,799 INFO L427 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:46,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:46,800 INFO L82 PathProgramCache]: Analyzing trace with hash 231211578, now seen corresponding path program 65 times [2020-10-14 23:53:46,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:46,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135311725] [2020-10-14 23:53:46,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:46,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:46,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:46,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:46,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:47,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:47,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:47,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:47,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:47,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:47,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:48,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:48,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:48,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 23:53:48,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:53:48,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2072 [2020-10-14 23:53:48,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:48,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 23:53:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:53:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 23:53:48,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:49,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:49,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:49,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:49,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:53:49,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:49,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:49,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:49,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:49,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:49,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:49,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:49,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:53:49,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135311725] [2020-10-14 23:53:49,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:49,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-14 23:53:49,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040472986] [2020-10-14 23:53:49,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-14 23:53:49,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:49,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-14 23:53:49,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=709, Invalid=931, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:53:49,790 INFO L87 Difference]: Start difference. First operand 382 states and 470 transitions. Second operand 41 states. [2020-10-14 23:53:51,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:51,431 INFO L93 Difference]: Finished difference Result 1014 states and 1239 transitions. [2020-10-14 23:53:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-10-14 23:53:51,432 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 125 [2020-10-14 23:53:51,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:51,435 INFO L225 Difference]: With dead ends: 1014 [2020-10-14 23:53:51,435 INFO L226 Difference]: Without dead ends: 510 [2020-10-14 23:53:51,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2121, Invalid=4041, Unknown=0, NotChecked=0, Total=6162 [2020-10-14 23:53:51,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-10-14 23:53:51,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 378. [2020-10-14 23:53:51,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-10-14 23:53:51,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 465 transitions. [2020-10-14 23:53:51,466 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 465 transitions. Word has length 125 [2020-10-14 23:53:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:51,466 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 465 transitions. [2020-10-14 23:53:51,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-14 23:53:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 465 transitions. [2020-10-14 23:53:51,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 23:53:51,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:51,467 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:51,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-14 23:53:51,468 INFO L427 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:51,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:51,468 INFO L82 PathProgramCache]: Analyzing trace with hash 489377016, now seen corresponding path program 66 times [2020-10-14 23:53:51,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:51,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483756783] [2020-10-14 23:53:51,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:51,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:51,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:51,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:51,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:52,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:52,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:52,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 23:53:52,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:53:52,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 881 [2020-10-14 23:53:52,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:52,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:52,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 23:53:52,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:53:52,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 23:53:52,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:53,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:53,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:53,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:53,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:53:53,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:53,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:53,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:53,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:53,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:53:53,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483756783] [2020-10-14 23:53:53,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:53,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-14 23:53:53,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775691070] [2020-10-14 23:53:53,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-14 23:53:53,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:53,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-14 23:53:53,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:53:53,307 INFO L87 Difference]: Start difference. First operand 378 states and 465 transitions. Second operand 41 states. [2020-10-14 23:53:53,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:53,625 INFO L93 Difference]: Finished difference Result 774 states and 961 transitions. [2020-10-14 23:53:53,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 23:53:53,626 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 125 [2020-10-14 23:53:53,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:53,627 INFO L225 Difference]: With dead ends: 774 [2020-10-14 23:53:53,627 INFO L226 Difference]: Without dead ends: 402 [2020-10-14 23:53:53,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:53:53,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-10-14 23:53:53,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 391. [2020-10-14 23:53:53,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-14 23:53:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 481 transitions. [2020-10-14 23:53:53,656 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 481 transitions. Word has length 125 [2020-10-14 23:53:53,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:53,657 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 481 transitions. [2020-10-14 23:53:53,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-14 23:53:53,657 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 481 transitions. [2020-10-14 23:53:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 23:53:53,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:53,658 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 36, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:53:53,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-14 23:53:53,658 INFO L427 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:53,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:53,658 INFO L82 PathProgramCache]: Analyzing trace with hash 628510020, now seen corresponding path program 67 times [2020-10-14 23:53:53,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:53,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393822224] [2020-10-14 23:53:53,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:53,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:53,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:53,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:53,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:53,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:53,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:54,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:54,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:54,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:54,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:55,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:55,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:55,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 23:53:55,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:53:55,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2239 [2020-10-14 23:53:55,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:55,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:55,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 23:53:55,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:53:55,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 23:53:55,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:56,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:53:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:56,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:56,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:53:56,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:53:56,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:53:56,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:53:56,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:53:56,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:53:56,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:53:56,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:53:56,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:53:56,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:53:56,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:53:56,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393822224] [2020-10-14 23:53:56,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:53:56,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-14 23:53:56,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500153906] [2020-10-14 23:53:56,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-14 23:53:56,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:53:56,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-14 23:53:56,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:53:56,901 INFO L87 Difference]: Start difference. First operand 391 states and 481 transitions. Second operand 42 states. [2020-10-14 23:53:57,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:53:57,254 INFO L93 Difference]: Finished difference Result 802 states and 997 transitions. [2020-10-14 23:53:57,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 23:53:57,255 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 128 [2020-10-14 23:53:57,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:53:57,256 INFO L225 Difference]: With dead ends: 802 [2020-10-14 23:53:57,256 INFO L226 Difference]: Without dead ends: 417 [2020-10-14 23:53:57,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:53:57,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-10-14 23:53:57,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 406. [2020-10-14 23:53:57,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-10-14 23:53:57,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 501 transitions. [2020-10-14 23:53:57,278 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 501 transitions. Word has length 128 [2020-10-14 23:53:57,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:53:57,278 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 501 transitions. [2020-10-14 23:53:57,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-14 23:53:57,279 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 501 transitions. [2020-10-14 23:53:57,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 23:53:57,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:53:57,279 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 36, 3, 1, 1, 1, 1, 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: SelfDestructingSolverStorable75 [2020-10-14 23:53:57,280 INFO L427 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:53:57,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:53:57,280 INFO L82 PathProgramCache]: Analyzing trace with hash 896391544, now seen corresponding path program 68 times [2020-10-14 23:53:57,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:53:57,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673365586] [2020-10-14 23:53:57,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:53:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:53:57,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:57,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:57,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:57,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:57,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:57,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:57,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:57,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:57,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:57,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:57,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:58,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:58,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:58,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:58,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:59,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:53:59,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:01,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:01,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:01,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:02,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:02,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 23:54:02,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:54:02,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 23:54:02,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:02,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:02,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 23:54:02,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:54:02,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 23:54:02,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:03,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:03,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:03,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:03,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:54:03,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:03,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:54:03,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:03,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:03,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:54:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 0 proven. 2255 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:54:03,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673365586] [2020-10-14 23:54:03,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:03,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-14 23:54:03,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617479509] [2020-10-14 23:54:03,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-14 23:54:03,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:03,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-14 23:54:03,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=747, Invalid=975, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:54:03,258 INFO L87 Difference]: Start difference. First operand 406 states and 501 transitions. Second operand 42 states. [2020-10-14 23:54:05,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:05,023 INFO L93 Difference]: Finished difference Result 1081 states and 1323 transitions. [2020-10-14 23:54:05,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-10-14 23:54:05,024 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 131 [2020-10-14 23:54:05,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:05,026 INFO L225 Difference]: With dead ends: 1081 [2020-10-14 23:54:05,027 INFO L226 Difference]: Without dead ends: 543 [2020-10-14 23:54:05,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2235, Invalid=4245, Unknown=0, NotChecked=0, Total=6480 [2020-10-14 23:54:05,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-10-14 23:54:05,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 400. [2020-10-14 23:54:05,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-14 23:54:05,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 492 transitions. [2020-10-14 23:54:05,053 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 492 transitions. Word has length 131 [2020-10-14 23:54:05,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:05,053 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 492 transitions. [2020-10-14 23:54:05,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-14 23:54:05,053 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 492 transitions. [2020-10-14 23:54:05,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 23:54:05,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:05,054 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 37, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:05,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-14 23:54:05,054 INFO L427 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:05,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:05,054 INFO L82 PathProgramCache]: Analyzing trace with hash -383472134, now seen corresponding path program 69 times [2020-10-14 23:54:05,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:05,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173077212] [2020-10-14 23:54:05,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:05,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:05,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:05,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:05,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:05,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:05,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:05,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:05,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:05,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:06,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:06,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:07,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:07,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 23:54:07,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:54:07,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2518 [2020-10-14 23:54:07,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:07,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 23:54:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:54:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 23:54:07,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:08,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:08,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:08,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:08,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:54:08,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:08,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:54:08,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:08,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:08,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:08,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:08,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:08,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:08,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 0 proven. 2260 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:54:08,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173077212] [2020-10-14 23:54:08,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:08,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-14 23:54:08,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823386978] [2020-10-14 23:54:08,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-14 23:54:08,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:08,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-14 23:54:08,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=786, Invalid=1020, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:54:08,561 INFO L87 Difference]: Start difference. First operand 400 states and 492 transitions. Second operand 43 states. [2020-10-14 23:54:10,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:10,336 INFO L93 Difference]: Finished difference Result 1062 states and 1297 transitions. [2020-10-14 23:54:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-10-14 23:54:10,337 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 131 [2020-10-14 23:54:10,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:10,339 INFO L225 Difference]: With dead ends: 1062 [2020-10-14 23:54:10,339 INFO L226 Difference]: Without dead ends: 534 [2020-10-14 23:54:10,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2352, Invalid=4454, Unknown=0, NotChecked=0, Total=6806 [2020-10-14 23:54:10,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-10-14 23:54:10,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 396. [2020-10-14 23:54:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-10-14 23:54:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 487 transitions. [2020-10-14 23:54:10,362 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 487 transitions. Word has length 131 [2020-10-14 23:54:10,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:10,363 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 487 transitions. [2020-10-14 23:54:10,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-14 23:54:10,363 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 487 transitions. [2020-10-14 23:54:10,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 23:54:10,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:10,364 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:10,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-14 23:54:10,364 INFO L427 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:10,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:10,364 INFO L82 PathProgramCache]: Analyzing trace with hash -125306696, now seen corresponding path program 70 times [2020-10-14 23:54:10,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:10,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446185636] [2020-10-14 23:54:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:10,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:10,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:10,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:10,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:10,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:11,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:11,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 23:54:11,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:54:11,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 969 [2020-10-14 23:54:11,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:11,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 23:54:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:54:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 23:54:11,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:12,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:12,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:12,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:12,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:54:12,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:12,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:12,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:12,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:12,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:12,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:12,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:12,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:54:12,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446185636] [2020-10-14 23:54:12,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:12,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-14 23:54:12,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113152224] [2020-10-14 23:54:12,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-14 23:54:12,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:12,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-14 23:54:12,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:54:12,397 INFO L87 Difference]: Start difference. First operand 396 states and 487 transitions. Second operand 43 states. [2020-10-14 23:54:12,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:12,853 INFO L93 Difference]: Finished difference Result 810 states and 1005 transitions. [2020-10-14 23:54:12,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 23:54:12,853 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 131 [2020-10-14 23:54:12,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:12,855 INFO L225 Difference]: With dead ends: 810 [2020-10-14 23:54:12,855 INFO L226 Difference]: Without dead ends: 420 [2020-10-14 23:54:12,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:54:12,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-10-14 23:54:12,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 409. [2020-10-14 23:54:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-10-14 23:54:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 503 transitions. [2020-10-14 23:54:12,895 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 503 transitions. Word has length 131 [2020-10-14 23:54:12,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:12,895 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 503 transitions. [2020-10-14 23:54:12,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-14 23:54:12,895 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 503 transitions. [2020-10-14 23:54:12,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 23:54:12,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:12,896 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 38, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:12,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2020-10-14 23:54:12,896 INFO L427 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:12,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:12,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1968371324, now seen corresponding path program 71 times [2020-10-14 23:54:12,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:12,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956390794] [2020-10-14 23:54:12,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:12,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:12,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:13,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:13,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:13,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:13,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:13,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:13,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:13,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:14,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:14,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:15,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:15,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 23:54:15,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:54:15,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2394 [2020-10-14 23:54:15,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:15,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-14 23:54:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:54:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 23:54:15,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:16,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:16,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:16,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:16,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:54:16,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:16,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:16,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:16,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:16,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:16,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 2378 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:54:16,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956390794] [2020-10-14 23:54:16,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:16,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-14 23:54:16,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576040845] [2020-10-14 23:54:16,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-14 23:54:16,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:16,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-14 23:54:16,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=826, Invalid=1066, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 23:54:16,338 INFO L87 Difference]: Start difference. First operand 409 states and 503 transitions. Second operand 44 states. [2020-10-14 23:54:18,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:18,422 INFO L93 Difference]: Finished difference Result 1086 states and 1326 transitions. [2020-10-14 23:54:18,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-10-14 23:54:18,423 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 134 [2020-10-14 23:54:18,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:18,425 INFO L225 Difference]: With dead ends: 1086 [2020-10-14 23:54:18,425 INFO L226 Difference]: Without dead ends: 546 [2020-10-14 23:54:18,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2472, Invalid=4668, Unknown=0, NotChecked=0, Total=7140 [2020-10-14 23:54:18,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-10-14 23:54:18,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 405. [2020-10-14 23:54:18,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-10-14 23:54:18,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 498 transitions. [2020-10-14 23:54:18,449 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 498 transitions. Word has length 134 [2020-10-14 23:54:18,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:18,450 INFO L479 AbstractCegarLoop]: Abstraction has 405 states and 498 transitions. [2020-10-14 23:54:18,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-14 23:54:18,450 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 498 transitions. [2020-10-14 23:54:18,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 23:54:18,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:18,451 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:18,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-14 23:54:18,451 INFO L427 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:18,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:18,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1710205886, now seen corresponding path program 72 times [2020-10-14 23:54:18,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:18,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399716629] [2020-10-14 23:54:18,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:18,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:18,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:18,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:18,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:18,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:19,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:19,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 23:54:19,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:54:19,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-10-14 23:54:19,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:19,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:19,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-14 23:54:19,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:54:19,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 23:54:19,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:20,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:20,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:20,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:20,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:54:20,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:20,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:20,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:20,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:20,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:20,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:20,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:20,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:54:20,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399716629] [2020-10-14 23:54:20,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:20,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-14 23:54:20,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958283901] [2020-10-14 23:54:20,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-14 23:54:20,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:20,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-14 23:54:20,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 23:54:20,682 INFO L87 Difference]: Start difference. First operand 405 states and 498 transitions. Second operand 44 states. [2020-10-14 23:54:21,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:21,025 INFO L93 Difference]: Finished difference Result 828 states and 1027 transitions. [2020-10-14 23:54:21,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 23:54:21,025 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 134 [2020-10-14 23:54:21,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:21,028 INFO L225 Difference]: With dead ends: 828 [2020-10-14 23:54:21,028 INFO L226 Difference]: Without dead ends: 429 [2020-10-14 23:54:21,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 23:54:21,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-10-14 23:54:21,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 418. [2020-10-14 23:54:21,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-14 23:54:21,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 514 transitions. [2020-10-14 23:54:21,054 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 514 transitions. Word has length 134 [2020-10-14 23:54:21,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:21,054 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 514 transitions. [2020-10-14 23:54:21,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-14 23:54:21,054 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 514 transitions. [2020-10-14 23:54:21,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 23:54:21,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:21,055 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 39, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:21,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-14 23:54:21,055 INFO L427 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:21,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:21,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1170311610, now seen corresponding path program 73 times [2020-10-14 23:54:21,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:21,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281786693] [2020-10-14 23:54:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:21,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:21,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:21,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:21,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:21,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:21,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:21,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:22,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:22,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:22,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:23,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:23,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 23:54:23,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:54:23,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2574 [2020-10-14 23:54:23,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:23,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:23,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 23:54:23,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:54:23,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 23:54:23,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:24,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:24,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:24,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:24,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:54:24,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:24,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:24,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:24,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:24,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:24,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:24,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 0 proven. 2499 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:54:24,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281786693] [2020-10-14 23:54:24,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:24,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-14 23:54:24,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453021622] [2020-10-14 23:54:24,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-14 23:54:24,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:24,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-14 23:54:24,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=867, Invalid=1113, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 23:54:24,737 INFO L87 Difference]: Start difference. First operand 418 states and 514 transitions. Second operand 45 states. [2020-10-14 23:54:26,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:26,824 INFO L93 Difference]: Finished difference Result 1110 states and 1355 transitions. [2020-10-14 23:54:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-10-14 23:54:26,825 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 137 [2020-10-14 23:54:26,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:26,827 INFO L225 Difference]: With dead ends: 1110 [2020-10-14 23:54:26,827 INFO L226 Difference]: Without dead ends: 558 [2020-10-14 23:54:26,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2595, Invalid=4887, Unknown=0, NotChecked=0, Total=7482 [2020-10-14 23:54:26,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-10-14 23:54:26,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 414. [2020-10-14 23:54:26,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-10-14 23:54:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 509 transitions. [2020-10-14 23:54:26,856 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 509 transitions. Word has length 137 [2020-10-14 23:54:26,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:26,856 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 509 transitions. [2020-10-14 23:54:26,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-14 23:54:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 509 transitions. [2020-10-14 23:54:26,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 23:54:26,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:26,857 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:26,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2020-10-14 23:54:26,857 INFO L427 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:26,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:26,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1428477048, now seen corresponding path program 74 times [2020-10-14 23:54:26,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:26,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456967879] [2020-10-14 23:54:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:26,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:26,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:27,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:27,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:27,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:27,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:27,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 23:54:27,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:54:27,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1109 [2020-10-14 23:54:27,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:27,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 23:54:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:54:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 23:54:27,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:29,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:29,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:29,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:29,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:54:29,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:29,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:29,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:29,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:29,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:29,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:29,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:29,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:29,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:54:29,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456967879] [2020-10-14 23:54:29,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:29,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-14 23:54:29,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798542282] [2020-10-14 23:54:29,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-14 23:54:29,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:29,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-14 23:54:29,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 23:54:29,156 INFO L87 Difference]: Start difference. First operand 414 states and 509 transitions. Second operand 45 states. [2020-10-14 23:54:29,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:29,642 INFO L93 Difference]: Finished difference Result 846 states and 1049 transitions. [2020-10-14 23:54:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 23:54:29,643 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 137 [2020-10-14 23:54:29,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:29,644 INFO L225 Difference]: With dead ends: 846 [2020-10-14 23:54:29,645 INFO L226 Difference]: Without dead ends: 438 [2020-10-14 23:54:29,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 23:54:29,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-14 23:54:29,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 427. [2020-10-14 23:54:29,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-10-14 23:54:29,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 525 transitions. [2020-10-14 23:54:29,671 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 525 transitions. Word has length 137 [2020-10-14 23:54:29,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:29,671 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 525 transitions. [2020-10-14 23:54:29,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-14 23:54:29,671 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 525 transitions. [2020-10-14 23:54:29,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 23:54:29,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:29,672 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 40, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:29,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-10-14 23:54:29,673 INFO L427 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:29,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:29,673 INFO L82 PathProgramCache]: Analyzing trace with hash -59402812, now seen corresponding path program 75 times [2020-10-14 23:54:29,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:29,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292734054] [2020-10-14 23:54:29,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:29,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:29,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:29,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:29,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:29,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:30,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:30,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:30,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:30,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:30,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:31,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:32,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:32,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 23:54:32,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 23:54:32,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2840 [2020-10-14 23:54:32,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:32,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:32,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-14 23:54:32,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:54:32,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 23:54:32,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:33,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:33,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:33,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:33,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:54:33,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:33,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:54:33,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:33,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:33,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:33,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:33,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:33,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:33,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:54:33,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292734054] [2020-10-14 23:54:33,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:33,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-14 23:54:33,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82237964] [2020-10-14 23:54:33,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-14 23:54:33,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:33,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-14 23:54:33,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 23:54:33,708 INFO L87 Difference]: Start difference. First operand 427 states and 525 transitions. Second operand 46 states. [2020-10-14 23:54:34,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:54:34,074 INFO L93 Difference]: Finished difference Result 874 states and 1085 transitions. [2020-10-14 23:54:34,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-14 23:54:34,075 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 140 [2020-10-14 23:54:34,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:54:34,076 INFO L225 Difference]: With dead ends: 874 [2020-10-14 23:54:34,076 INFO L226 Difference]: Without dead ends: 453 [2020-10-14 23:54:34,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 23:54:34,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-10-14 23:54:34,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 442. [2020-10-14 23:54:34,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-10-14 23:54:34,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 545 transitions. [2020-10-14 23:54:34,103 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 545 transitions. Word has length 140 [2020-10-14 23:54:34,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:54:34,103 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 545 transitions. [2020-10-14 23:54:34,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-14 23:54:34,103 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 545 transitions. [2020-10-14 23:54:34,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 23:54:34,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:54:34,104 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 40, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:54:34,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-14 23:54:34,104 INFO L427 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:54:34,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:54:34,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1425817352, now seen corresponding path program 76 times [2020-10-14 23:54:34,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:54:34,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073552290] [2020-10-14 23:54:34,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:54:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:34,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:34,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:34,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:34,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:34,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:34,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:34,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:34,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:35,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:35,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:35,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:35,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:35,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:35,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:35,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:36,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:37,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:37,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:38,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:38,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:39,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:39,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 23:54:39,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 23:54:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 23:54:39,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:39,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-14 23:54:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:54:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 23:54:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:40,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:54:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:54:40,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:54:40,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:54:40,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:54:40,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:54:40,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:54:40,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:54:40,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:54:40,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:54:40,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:54:40,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:54:40,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:54:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 2745 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:54:40,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073552290] [2020-10-14 23:54:40,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:54:40,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-14 23:54:40,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688228622] [2020-10-14 23:54:40,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-14 23:54:40,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:54:40,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-14 23:54:40,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=909, Invalid=1161, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 23:54:40,319 INFO L87 Difference]: Start difference. First operand 442 states and 545 transitions. Second operand 46 states.