/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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-acceleration/array_3-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:13:04,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:13:04,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:13:04,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:13:04,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:13:04,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:13:04,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:13:04,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:13:04,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:13:04,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:13:04,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:13:04,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:13:04,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:13:04,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:13:04,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:13:04,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:13:04,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:13:04,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:13:04,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:13:04,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:13:04,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:13:04,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:13:04,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:13:04,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:13:04,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:13:04,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:13:04,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:13:04,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:13:04,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:13:04,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:13:04,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:13:04,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:13:04,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:13:04,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:13:04,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:13:04,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:13:04,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:13:04,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:13:04,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:13:04,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:13:04,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:13:04,767 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 05:13:04,788 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:13:04,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:13:04,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:13:04,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:13:04,790 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:13:04,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:13:04,790 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:13:04,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:13:04,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:13:04,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:13:04,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:13:04,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:13:04,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:13:04,792 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:13:04,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:13:04,792 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:13:04,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:13:04,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:13:04,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:13:04,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:13:04,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:13:04,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:13:04,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:13:04,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:13:04,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:13:04,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:13:04,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:13:04,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:13:04,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:13:04,795 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:13:05,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:13:05,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:13:05,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:13:05,111 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:13:05,112 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:13:05,113 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_3-2.i [2020-10-14 05:13:05,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aaf16b5c5/1dd1a30266a449caa483b939d3242911/FLAG55dcb4881 [2020-10-14 05:13:05,635 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:13:05,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/array_3-2.i [2020-10-14 05:13:05,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aaf16b5c5/1dd1a30266a449caa483b939d3242911/FLAG55dcb4881 [2020-10-14 05:13:05,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aaf16b5c5/1dd1a30266a449caa483b939d3242911 [2020-10-14 05:13:06,004 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:13:06,007 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:13:06,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:13:06,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:13:06,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:13:06,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:13:05" (1/1) ... [2020-10-14 05:13:06,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@270276e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:13:06, skipping insertion in model container [2020-10-14 05:13:06,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:13:05" (1/1) ... [2020-10-14 05:13:06,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:13:06,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:13:06,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:13:06,228 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:13:06,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:13:06,273 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:13:06,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:13:06 WrapperNode [2020-10-14 05:13:06,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:13:06,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:13:06,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:13:06,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:13:06,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:13:06" (1/1) ... [2020-10-14 05:13:06,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:13:06" (1/1) ... [2020-10-14 05:13:06,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:13:06" (1/1) ... [2020-10-14 05:13:06,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:13:06" (1/1) ... [2020-10-14 05:13:06,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:13:06" (1/1) ... [2020-10-14 05:13:06,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:13:06" (1/1) ... [2020-10-14 05:13:06,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:13:06" (1/1) ... [2020-10-14 05:13:06,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:13:06,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:13:06,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:13:06,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:13:06,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:13:06" (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 05:13:06,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:13:06,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:13:06,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:13:06,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:13:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:13:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:13:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:13:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:13:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 05:13:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 05:13:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 05:13:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 05:13:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:13:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:13:06,716 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:13:06,717 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 05:13:06,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:13:06 BoogieIcfgContainer [2020-10-14 05:13:06,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:13:06,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:13:06,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:13:06,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:13:06,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:13:05" (1/3) ... [2020-10-14 05:13:06,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617de784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:13:06, skipping insertion in model container [2020-10-14 05:13:06,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:13:06" (2/3) ... [2020-10-14 05:13:06,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617de784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:13:06, skipping insertion in model container [2020-10-14 05:13:06,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:13:06" (3/3) ... [2020-10-14 05:13:06,737 INFO L109 eAbstractionObserver]: Analyzing ICFG array_3-2.i [2020-10-14 05:13:06,754 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:13:06,772 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:13:06,805 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:13:06,863 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:13:06,864 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:13:06,864 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:13:06,864 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:13:06,864 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:13:06,864 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:13:06,865 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:13:06,865 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:13:06,898 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-14 05:13:06,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 05:13:06,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:06,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:06,916 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:06,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:06,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1584649929, now seen corresponding path program 1 times [2020-10-14 05:13:06,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:06,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396308002] [2020-10-14 05:13:06,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:07,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:07,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:07,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:07,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:07,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:13:07,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:13:07,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-14 05:13:07,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:07,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:07,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:07,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:13:07,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:07,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 05:13:07,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:07,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:07,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:07,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:07,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:07,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:13:07,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:07,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:07,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:07,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:07,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:13:07,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396308002] [2020-10-14 05:13:07,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:13:07,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:13:07,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113757632] [2020-10-14 05:13:07,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:13:07,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:07,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:13:07,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:13:07,443 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-10-14 05:13:07,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:07,535 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2020-10-14 05:13:07,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:13:07,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-14 05:13:07,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:07,546 INFO L225 Difference]: With dead ends: 42 [2020-10-14 05:13:07,547 INFO L226 Difference]: Without dead ends: 18 [2020-10-14 05:13:07,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:13:07,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-14 05:13:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-14 05:13:07,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-14 05:13:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-10-14 05:13:07,589 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2020-10-14 05:13:07,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:07,589 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-10-14 05:13:07,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:13:07,590 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-10-14 05:13:07,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 05:13:07,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:07,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:07,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:13:07,592 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:07,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:07,592 INFO L82 PathProgramCache]: Analyzing trace with hash -963606854, now seen corresponding path program 1 times [2020-10-14 05:13:07,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:07,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674689645] [2020-10-14 05:13:07,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:07,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:07,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:07,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:07,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:13:07,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:07,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 05:13:07,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:07,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:07,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:13:07,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:13:07,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:13:07,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:07,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:07,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:07,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:07,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:07,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:07,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:13:07,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:07,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:07,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:07,811 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 05:13:07,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674689645] [2020-10-14 05:13:07,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:13:07,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 05:13:07,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067703070] [2020-10-14 05:13:07,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:13:07,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:07,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:13:07,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:13:07,815 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2020-10-14 05:13:07,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:07,881 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-10-14 05:13:07,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:13:07,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-14 05:13:07,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:07,885 INFO L225 Difference]: With dead ends: 35 [2020-10-14 05:13:07,885 INFO L226 Difference]: Without dead ends: 25 [2020-10-14 05:13:07,886 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 05:13:07,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-14 05:13:07,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2020-10-14 05:13:07,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-14 05:13:07,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-10-14 05:13:07,894 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2020-10-14 05:13:07,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:07,895 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-10-14 05:13:07,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:13:07,895 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-10-14 05:13:07,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 05:13:07,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:07,896 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 05:13:07,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:13:07,897 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:07,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:07,897 INFO L82 PathProgramCache]: Analyzing trace with hash -544788776, now seen corresponding path program 1 times [2020-10-14 05:13:07,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:07,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973100261] [2020-10-14 05:13:07,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:07,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:08,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:08,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:13:08,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:08,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-14 05:13:08,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:08,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:13:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:13:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:13:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:08,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:08,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:08,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:08,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:08,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:08,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:13:08,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:08,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:08,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:08,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:08,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:08,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:13:08,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973100261] [2020-10-14 05:13:08,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:13:08,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 05:13:08,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788717166] [2020-10-14 05:13:08,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:13:08,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:08,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:13:08,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:13:08,256 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2020-10-14 05:13:08,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:08,357 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-10-14 05:13:08,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:13:08,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-14 05:13:08,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:08,359 INFO L225 Difference]: With dead ends: 29 [2020-10-14 05:13:08,359 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 05:13:08,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:13:08,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 05:13:08,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-10-14 05:13:08,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-14 05:13:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-14 05:13:08,366 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2020-10-14 05:13:08,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:08,366 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-14 05:13:08,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:13:08,367 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-14 05:13:08,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 05:13:08,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:08,368 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:08,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:13:08,368 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:08,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:08,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1315898579, now seen corresponding path program 1 times [2020-10-14 05:13:08,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:08,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986243761] [2020-10-14 05:13:08,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:08,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:08,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:08,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:08,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:13:08,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:08,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 05:13:08,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:08,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:13:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:13:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 05:13:08,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:08,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:08,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:08,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:08,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:08,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:08,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:13:08,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:08,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:08,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:13:08,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986243761] [2020-10-14 05:13:08,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:08,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:13:08,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573198442] [2020-10-14 05:13:08,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:13:08,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:08,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:13:08,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:13:08,639 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2020-10-14 05:13:08,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:08,734 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-10-14 05:13:08,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:13:08,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-14 05:13:08,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:08,736 INFO L225 Difference]: With dead ends: 44 [2020-10-14 05:13:08,736 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 05:13:08,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:13:08,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 05:13:08,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2020-10-14 05:13:08,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-14 05:13:08,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-14 05:13:08,747 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 21 [2020-10-14 05:13:08,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:08,747 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-14 05:13:08,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:13:08,748 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-14 05:13:08,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 05:13:08,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:08,750 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:08,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:13:08,750 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:08,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:08,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1597858191, now seen corresponding path program 2 times [2020-10-14 05:13:08,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:08,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704897859] [2020-10-14 05:13:08,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:08,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:08,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:09,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:09,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:13:09,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:09,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-14 05:13:09,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:09,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:13:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:13:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:13:09,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:09,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:09,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:09,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:09,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:09,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:13:09,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:09,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:09,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:13:09,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704897859] [2020-10-14 05:13:09,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:09,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:13:09,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199996593] [2020-10-14 05:13:09,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:13:09,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:09,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:13:09,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:13:09,258 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 7 states. [2020-10-14 05:13:09,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:09,398 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-10-14 05:13:09,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:13:09,401 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-14 05:13:09,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:09,402 INFO L225 Difference]: With dead ends: 35 [2020-10-14 05:13:09,402 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 05:13:09,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:13:09,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 05:13:09,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-10-14 05:13:09,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 05:13:09,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-14 05:13:09,413 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 23 [2020-10-14 05:13:09,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:09,414 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-14 05:13:09,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:13:09,415 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-14 05:13:09,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:13:09,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:09,416 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:09,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:13:09,417 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:09,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:09,418 INFO L82 PathProgramCache]: Analyzing trace with hash 516358124, now seen corresponding path program 3 times [2020-10-14 05:13:09,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:09,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066393779] [2020-10-14 05:13:09,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:09,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:09,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:09,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:09,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:13:09,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:09,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-14 05:13:09,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:09,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:13:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:13:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:13:09,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:09,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:09,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:09,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:09,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:09,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:09,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:13:09,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:09,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:09,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:09,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:09,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:09,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:13:09,719 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 05:13:09,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066393779] [2020-10-14 05:13:09,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:09,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:13:09,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903371267] [2020-10-14 05:13:09,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:13:09,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:09,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:13:09,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:13:09,730 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-10-14 05:13:09,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:09,822 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-14 05:13:09,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:13:09,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-14 05:13:09,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:09,824 INFO L225 Difference]: With dead ends: 54 [2020-10-14 05:13:09,824 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 05:13:09,825 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 05:13:09,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 05:13:09,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-10-14 05:13:09,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 05:13:09,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-14 05:13:09,838 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 27 [2020-10-14 05:13:09,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:09,839 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-14 05:13:09,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:13:09,839 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-14 05:13:09,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 05:13:09,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:09,842 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:09,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:13:09,843 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:09,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:09,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1717332746, now seen corresponding path program 4 times [2020-10-14 05:13:09,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:09,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532310961] [2020-10-14 05:13:09,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:09,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:09,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:10,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:10,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 05:13:10,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:10,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-14 05:13:10,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:10,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:10,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:13:10,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 05:13:10,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:13:10,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:10,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:10,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:10,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:10,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:10,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:10,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:13:10,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:10,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:10,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:10,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:10,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:10,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 05:13:10,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532310961] [2020-10-14 05:13:10,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:10,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:13:10,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825366408] [2020-10-14 05:13:10,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:13:10,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:10,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:13:10,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:13:10,465 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2020-10-14 05:13:10,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:10,602 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-10-14 05:13:10,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:13:10,603 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-14 05:13:10,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:10,604 INFO L225 Difference]: With dead ends: 41 [2020-10-14 05:13:10,604 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 05:13:10,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:13:10,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 05:13:10,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-14 05:13:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 05:13:10,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-14 05:13:10,611 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 29 [2020-10-14 05:13:10,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:10,612 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-14 05:13:10,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:13:10,612 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-14 05:13:10,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 05:13:10,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:10,613 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:10,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:13:10,614 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:10,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:10,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1291397115, now seen corresponding path program 5 times [2020-10-14 05:13:10,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:10,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428307594] [2020-10-14 05:13:10,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:10,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:10,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:10,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:10,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 05:13:10,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:10,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-14 05:13:10,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:10,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:13:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 05:13:10,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:13:10,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:11,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:11,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:11,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:11,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:11,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:11,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:13:11,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:11,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:11,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 05:13:11,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428307594] [2020-10-14 05:13:11,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:11,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:13:11,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217843686] [2020-10-14 05:13:11,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:13:11,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:11,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:13:11,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:13:11,026 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 9 states. [2020-10-14 05:13:11,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:11,154 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2020-10-14 05:13:11,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:13:11,155 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-10-14 05:13:11,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:11,156 INFO L225 Difference]: With dead ends: 66 [2020-10-14 05:13:11,156 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 05:13:11,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:13:11,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 05:13:11,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-14 05:13:11,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 05:13:11,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-14 05:13:11,163 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 33 [2020-10-14 05:13:11,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:11,163 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-14 05:13:11,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:13:11,163 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-14 05:13:11,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 05:13:11,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:11,164 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:11,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:13:11,165 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:11,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:11,165 INFO L82 PathProgramCache]: Analyzing trace with hash 893709598, now seen corresponding path program 6 times [2020-10-14 05:13:11,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:11,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714382701] [2020-10-14 05:13:11,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:11,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:11,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:11,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:11,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 05:13:11,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:11,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 821 [2020-10-14 05:13:11,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:11,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:11,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:13:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 05:13:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:13:11,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:12,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:12,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:12,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:12,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:12,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:12,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:13:12,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:12,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:12,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:12,082 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 05:13:12,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714382701] [2020-10-14 05:13:12,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:12,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 05:13:12,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505752947] [2020-10-14 05:13:12,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:13:12,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:12,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:13:12,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:13:12,090 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 10 states. [2020-10-14 05:13:12,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:12,225 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2020-10-14 05:13:12,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:13:12,226 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-14 05:13:12,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:12,227 INFO L225 Difference]: With dead ends: 76 [2020-10-14 05:13:12,227 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 05:13:12,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:13:12,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 05:13:12,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-14 05:13:12,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 05:13:12,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-10-14 05:13:12,233 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 39 [2020-10-14 05:13:12,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:12,233 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-10-14 05:13:12,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:13:12,234 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-10-14 05:13:12,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 05:13:12,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:12,235 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:12,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:13:12,235 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:12,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:12,235 INFO L82 PathProgramCache]: Analyzing trace with hash -398483657, now seen corresponding path program 7 times [2020-10-14 05:13:12,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:12,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143763475] [2020-10-14 05:13:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:12,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:12,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:13,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:13,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 05:13:13,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-10-14 05:13:13,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:13,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:13:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 05:13:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:13:13,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:13,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:13,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:13,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:13,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:13,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:13,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:13:13,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:13,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:13,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:13,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:13,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:13,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-14 05:13:13,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143763475] [2020-10-14 05:13:13,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:13,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 05:13:13,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156745182] [2020-10-14 05:13:13,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:13:13,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:13,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:13:13,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:13:13,171 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 11 states. [2020-10-14 05:13:13,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:13,369 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2020-10-14 05:13:13,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:13:13,370 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-14 05:13:13,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:13,371 INFO L225 Difference]: With dead ends: 86 [2020-10-14 05:13:13,371 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 05:13:13,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:13:13,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 05:13:13,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-14 05:13:13,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 05:13:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2020-10-14 05:13:13,379 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 45 [2020-10-14 05:13:13,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:13,379 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2020-10-14 05:13:13,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:13:13,379 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-10-14 05:13:13,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 05:13:13,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:13,380 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:13,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:13:13,381 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:13,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:13,381 INFO L82 PathProgramCache]: Analyzing trace with hash 291327568, now seen corresponding path program 8 times [2020-10-14 05:13:13,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:13,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929333678] [2020-10-14 05:13:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:13,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:13,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:14,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:14,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 05:13:14,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:14,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1200 [2020-10-14 05:13:14,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:14,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:14,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:13:14,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:13:14,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 05:13:14,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:14,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:14,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:14,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:14,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:14,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:14,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:13:14,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:14,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:14,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:14,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:14,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:14,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 05:13:14,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929333678] [2020-10-14 05:13:14,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:14,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:13:14,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558259016] [2020-10-14 05:13:14,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:13:14,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:14,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:13:14,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:13:14,712 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 12 states. [2020-10-14 05:13:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:14,873 INFO L93 Difference]: Finished difference Result 96 states and 114 transitions. [2020-10-14 05:13:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:13:14,874 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-14 05:13:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:14,875 INFO L225 Difference]: With dead ends: 96 [2020-10-14 05:13:14,875 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 05:13:14,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:13:14,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 05:13:14,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-14 05:13:14,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 05:13:14,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2020-10-14 05:13:14,882 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 51 [2020-10-14 05:13:14,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:14,882 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2020-10-14 05:13:14,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:13:14,883 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2020-10-14 05:13:14,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 05:13:14,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:14,884 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:14,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:13:14,884 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:14,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:14,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1655462505, now seen corresponding path program 9 times [2020-10-14 05:13:14,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:14,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298377547] [2020-10-14 05:13:14,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:14,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:15,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:16,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:16,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 05:13:16,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:16,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1617 [2020-10-14 05:13:16,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:16,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:16,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:13:16,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 05:13:16,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 05:13:16,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:16,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:16,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:16,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:16,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:16,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:16,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:13:16,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:16,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:16,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 05:13:16,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298377547] [2020-10-14 05:13:16,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:16,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:13:16,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410028980] [2020-10-14 05:13:16,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:13:16,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:16,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:13:16,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:13:16,670 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 13 states. [2020-10-14 05:13:16,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:16,851 INFO L93 Difference]: Finished difference Result 106 states and 126 transitions. [2020-10-14 05:13:16,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:13:16,851 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-14 05:13:16,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:16,852 INFO L225 Difference]: With dead ends: 106 [2020-10-14 05:13:16,852 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 05:13:16,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:13:16,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 05:13:16,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-14 05:13:16,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 05:13:16,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-10-14 05:13:16,867 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 57 [2020-10-14 05:13:16,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:16,867 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-10-14 05:13:16,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:13:16,868 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-10-14 05:13:16,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 05:13:16,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:16,869 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:16,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:13:16,873 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:16,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:16,874 INFO L82 PathProgramCache]: Analyzing trace with hash -454876286, now seen corresponding path program 10 times [2020-10-14 05:13:16,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:16,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685635476] [2020-10-14 05:13:16,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:16,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:17,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:19,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:19,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 05:13:19,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:19,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2260 [2020-10-14 05:13:19,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:19,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:19,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:13:19,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 05:13:19,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 05:13:19,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:19,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:19,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:19,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:19,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:19,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:19,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:13:19,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:19,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:19,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:19,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-14 05:13:19,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685635476] [2020-10-14 05:13:19,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:19,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 05:13:19,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206181731] [2020-10-14 05:13:19,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 05:13:19,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:19,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 05:13:19,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:13:19,352 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 14 states. [2020-10-14 05:13:19,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:19,536 INFO L93 Difference]: Finished difference Result 116 states and 138 transitions. [2020-10-14 05:13:19,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:13:19,537 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-10-14 05:13:19,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:19,538 INFO L225 Difference]: With dead ends: 116 [2020-10-14 05:13:19,538 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 05:13:19,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:13:19,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 05:13:19,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-14 05:13:19,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-14 05:13:19,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2020-10-14 05:13:19,557 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 63 [2020-10-14 05:13:19,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:19,557 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2020-10-14 05:13:19,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 05:13:19,558 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2020-10-14 05:13:19,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 05:13:19,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:19,559 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:19,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:13:19,561 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:19,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:19,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1633683867, now seen corresponding path program 11 times [2020-10-14 05:13:19,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:19,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274068326] [2020-10-14 05:13:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:19,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:19,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:22,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:22,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 05:13:22,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:22,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2743 [2020-10-14 05:13:22,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:22,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:13:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 05:13:22,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 05:13:22,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:22,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:22,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:22,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:22,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:22,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:22,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:13:22,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:22,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:22,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:22,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:22,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:22,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:22,483 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 05:13:22,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274068326] [2020-10-14 05:13:22,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:22,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 05:13:22,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438373565] [2020-10-14 05:13:22,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:13:22,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:22,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:13:22,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:13:22,486 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand 15 states. [2020-10-14 05:13:22,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:22,675 INFO L93 Difference]: Finished difference Result 126 states and 150 transitions. [2020-10-14 05:13:22,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:13:22,676 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-10-14 05:13:22,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:22,677 INFO L225 Difference]: With dead ends: 126 [2020-10-14 05:13:22,677 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 05:13:22,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:13:22,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 05:13:22,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-14 05:13:22,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-14 05:13:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2020-10-14 05:13:22,689 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 69 [2020-10-14 05:13:22,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:22,693 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2020-10-14 05:13:22,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:13:22,693 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2020-10-14 05:13:22,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 05:13:22,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:22,694 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:22,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:13:22,695 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:22,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:22,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1277783220, now seen corresponding path program 12 times [2020-10-14 05:13:22,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:22,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454600901] [2020-10-14 05:13:22,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:22,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:22,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:27,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:27,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 05:13:27,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:27,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 05:13:27,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:27,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:13:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 05:13:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 05:13:27,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:27,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:27,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:27,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:27,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:27,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:13:27,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:27,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:27,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-14 05:13:27,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454600901] [2020-10-14 05:13:27,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:27,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 05:13:27,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078573554] [2020-10-14 05:13:27,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 05:13:27,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:27,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 05:13:27,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:13:27,918 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand 16 states. [2020-10-14 05:13:28,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:28,155 INFO L93 Difference]: Finished difference Result 136 states and 162 transitions. [2020-10-14 05:13:28,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 05:13:28,155 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 75 [2020-10-14 05:13:28,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:28,156 INFO L225 Difference]: With dead ends: 136 [2020-10-14 05:13:28,156 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 05:13:28,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:13:28,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 05:13:28,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-14 05:13:28,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-14 05:13:28,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2020-10-14 05:13:28,166 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 75 [2020-10-14 05:13:28,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:28,167 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2020-10-14 05:13:28,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 05:13:28,167 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2020-10-14 05:13:28,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 05:13:28,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:28,168 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:28,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 05:13:28,168 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:28,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:28,169 INFO L82 PathProgramCache]: Analyzing trace with hash 770550989, now seen corresponding path program 13 times [2020-10-14 05:13:28,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:28,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472765041] [2020-10-14 05:13:28,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:28,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:28,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:31,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:31,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 05:13:31,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:31,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3444 [2020-10-14 05:13:31,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:31,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:31,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:13:31,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 05:13:31,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 05:13:31,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:31,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:31,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:31,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:31,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:31,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:13:31,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:31,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:31,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-14 05:13:31,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472765041] [2020-10-14 05:13:31,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:31,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:13:31,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364259934] [2020-10-14 05:13:31,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:13:31,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:31,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:13:31,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:13:31,813 INFO L87 Difference]: Start difference. First operand 82 states and 95 transitions. Second operand 17 states. [2020-10-14 05:13:32,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:32,056 INFO L93 Difference]: Finished difference Result 146 states and 174 transitions. [2020-10-14 05:13:32,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 05:13:32,057 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 81 [2020-10-14 05:13:32,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:32,057 INFO L225 Difference]: With dead ends: 146 [2020-10-14 05:13:32,058 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 05:13:32,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:13:32,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 05:13:32,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-10-14 05:13:32,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 05:13:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2020-10-14 05:13:32,066 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 81 [2020-10-14 05:13:32,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:32,068 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2020-10-14 05:13:32,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:13:32,068 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2020-10-14 05:13:32,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 05:13:32,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:32,069 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:32,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 05:13:32,069 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:32,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:32,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1912395290, now seen corresponding path program 14 times [2020-10-14 05:13:32,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:32,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95002408] [2020-10-14 05:13:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:32,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:32,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:37,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:37,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 05:13:37,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:37,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 05:13:37,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:37,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:37,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:13:37,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 05:13:37,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 05:13:37,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:37,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:37,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:37,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:37,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:37,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:37,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:13:37,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:37,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:37,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:37,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:37,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:37,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 05:13:37,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95002408] [2020-10-14 05:13:37,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:37,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 05:13:37,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033188456] [2020-10-14 05:13:37,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 05:13:37,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:37,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 05:13:37,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:13:37,300 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand 18 states. [2020-10-14 05:13:37,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:37,535 INFO L93 Difference]: Finished difference Result 156 states and 186 transitions. [2020-10-14 05:13:37,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 05:13:37,535 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 87 [2020-10-14 05:13:37,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:37,536 INFO L225 Difference]: With dead ends: 156 [2020-10-14 05:13:37,537 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 05:13:37,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:13:37,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 05:13:37,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-14 05:13:37,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-14 05:13:37,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-10-14 05:13:37,545 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 87 [2020-10-14 05:13:37,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:37,546 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-10-14 05:13:37,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 05:13:37,546 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-10-14 05:13:37,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 05:13:37,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:37,550 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:37,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 05:13:37,550 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:37,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:37,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1550337023, now seen corresponding path program 15 times [2020-10-14 05:13:37,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:37,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901729545] [2020-10-14 05:13:37,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:37,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:37,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:42,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:42,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 05:13:42,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:42,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 05:13:42,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:42,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:42,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:13:42,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 05:13:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 05:13:42,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:42,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:42,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:42,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:42,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:42,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:42,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:13:42,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:42,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:42,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:42,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:42,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:42,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:42,851 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-10-14 05:13:42,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901729545] [2020-10-14 05:13:42,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:42,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 05:13:42,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823896190] [2020-10-14 05:13:42,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 05:13:42,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:42,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 05:13:42,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:13:42,861 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 19 states. [2020-10-14 05:13:43,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:43,173 INFO L93 Difference]: Finished difference Result 166 states and 198 transitions. [2020-10-14 05:13:43,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 05:13:43,173 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 93 [2020-10-14 05:13:43,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:43,175 INFO L225 Difference]: With dead ends: 166 [2020-10-14 05:13:43,175 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 05:13:43,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:13:43,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 05:13:43,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-14 05:13:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 05:13:43,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2020-10-14 05:13:43,185 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 93 [2020-10-14 05:13:43,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:43,185 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2020-10-14 05:13:43,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 05:13:43,186 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2020-10-14 05:13:43,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 05:13:43,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:43,187 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:43,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 05:13:43,188 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:43,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:43,188 INFO L82 PathProgramCache]: Analyzing trace with hash -607954152, now seen corresponding path program 16 times [2020-10-14 05:13:43,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:43,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228898411] [2020-10-14 05:13:43,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:43,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:43,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:48,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:48,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 05:13:48,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:48,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 05:13:48,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:48,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 05:13:48,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 05:13:48,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 05:13:48,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:48,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:48,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:48,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:48,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:48,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:48,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:13:48,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:48,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:48,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:48,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:48,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:48,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-10-14 05:13:48,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228898411] [2020-10-14 05:13:48,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:48,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 05:13:48,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680929251] [2020-10-14 05:13:48,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 05:13:48,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:48,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 05:13:48,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=238, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:13:48,515 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand 20 states. [2020-10-14 05:13:48,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:48,754 INFO L93 Difference]: Finished difference Result 176 states and 210 transitions. [2020-10-14 05:13:48,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 05:13:48,755 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 99 [2020-10-14 05:13:48,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:48,756 INFO L225 Difference]: With dead ends: 176 [2020-10-14 05:13:48,756 INFO L226 Difference]: Without dead ends: 108 [2020-10-14 05:13:48,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:13:48,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-14 05:13:48,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-10-14 05:13:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-14 05:13:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2020-10-14 05:13:48,762 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 99 [2020-10-14 05:13:48,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:48,762 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2020-10-14 05:13:48,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 05:13:48,762 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2020-10-14 05:13:48,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 05:13:48,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:48,763 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:48,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 05:13:48,764 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:48,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:48,764 INFO L82 PathProgramCache]: Analyzing trace with hash 191024945, now seen corresponding path program 17 times [2020-10-14 05:13:48,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:48,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003886384] [2020-10-14 05:13:48,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:48,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:49,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:53,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:53,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 05:13:53,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:53,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4404 [2020-10-14 05:13:53,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:53,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:53,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:13:53,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 05:13:53,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 05:13:53,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:53,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:53,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:53,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:53,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:53,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:53,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:13:53,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:53,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:53,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:53,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-14 05:13:53,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003886384] [2020-10-14 05:13:53,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:53,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 05:13:53,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395379392] [2020-10-14 05:13:53,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 05:13:53,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:53,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 05:13:53,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:13:53,450 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand 21 states. [2020-10-14 05:13:53,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:53,777 INFO L93 Difference]: Finished difference Result 186 states and 222 transitions. [2020-10-14 05:13:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:13:53,778 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 105 [2020-10-14 05:13:53,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:53,779 INFO L225 Difference]: With dead ends: 186 [2020-10-14 05:13:53,779 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 05:13:53,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:13:53,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 05:13:53,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-14 05:13:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-14 05:13:53,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2020-10-14 05:13:53,786 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 105 [2020-10-14 05:13:53,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:53,786 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2020-10-14 05:13:53,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 05:13:53,786 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2020-10-14 05:13:53,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 05:13:53,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:53,787 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:53,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 05:13:53,788 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:53,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:53,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1858273206, now seen corresponding path program 18 times [2020-10-14 05:13:53,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:53,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307323483] [2020-10-14 05:13:53,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:53,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:54,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:58,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:58,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 05:13:58,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:58,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 05:13:58,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:58,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:58,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 05:13:58,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 05:13:58,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 05:13:58,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:59,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:59,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:59,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:59,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:59,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:59,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:13:59,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:59,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:59,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:59,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:59,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:59,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:59,096 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-14 05:13:59,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307323483] [2020-10-14 05:13:59,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:59,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 05:13:59,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932611404] [2020-10-14 05:13:59,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 05:13:59,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:59,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 05:13:59,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:13:59,098 INFO L87 Difference]: Start difference. First operand 112 states and 130 transitions. Second operand 22 states. [2020-10-14 05:13:59,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:59,374 INFO L93 Difference]: Finished difference Result 196 states and 234 transitions. [2020-10-14 05:13:59,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 05:13:59,375 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 111 [2020-10-14 05:13:59,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:59,376 INFO L225 Difference]: With dead ends: 196 [2020-10-14 05:13:59,376 INFO L226 Difference]: Without dead ends: 120 [2020-10-14 05:13:59,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:13:59,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-14 05:13:59,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-10-14 05:13:59,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-14 05:13:59,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-10-14 05:13:59,382 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 111 [2020-10-14 05:13:59,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:59,383 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-10-14 05:13:59,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 05:13:59,383 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-10-14 05:13:59,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 05:13:59,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:59,384 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:59,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 05:13:59,385 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:59,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:59,385 INFO L82 PathProgramCache]: Analyzing trace with hash 602951267, now seen corresponding path program 19 times [2020-10-14 05:13:59,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:59,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736285477] [2020-10-14 05:13:59,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:59,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:59,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:04,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:04,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 05:14:04,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:14:04,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 05:14:04,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:04,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 05:14:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 05:14:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 05:14:04,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:04,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:04,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:04,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:04,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:14:04,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:04,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:14:04,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:04,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:04,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2020-10-14 05:14:04,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736285477] [2020-10-14 05:14:04,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:14:04,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 05:14:04,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376129130] [2020-10-14 05:14:04,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 05:14:04,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:04,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 05:14:04,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=310, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:14:04,744 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 23 states. [2020-10-14 05:14:05,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:05,044 INFO L93 Difference]: Finished difference Result 206 states and 246 transitions. [2020-10-14 05:14:05,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 05:14:05,047 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 117 [2020-10-14 05:14:05,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:05,048 INFO L225 Difference]: With dead ends: 206 [2020-10-14 05:14:05,048 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 05:14:05,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=394, Unknown=0, NotChecked=0, Total=600 [2020-10-14 05:14:05,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 05:14:05,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-10-14 05:14:05,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-14 05:14:05,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2020-10-14 05:14:05,054 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 117 [2020-10-14 05:14:05,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:05,054 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2020-10-14 05:14:05,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 05:14:05,054 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2020-10-14 05:14:05,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 05:14:05,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:05,056 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:14:05,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 05:14:05,056 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:05,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:05,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1958943100, now seen corresponding path program 20 times [2020-10-14 05:14:05,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:05,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639350045] [2020-10-14 05:14:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:05,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:05,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:10,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:10,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 05:14:10,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:14:10,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 05:14:10,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:10,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:10,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 05:14:10,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 05:14:10,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 05:14:10,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:10,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:10,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:10,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:10,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:14:10,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:10,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:14:10,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:10,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:10,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:10,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:10,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:10,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2020-10-14 05:14:10,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639350045] [2020-10-14 05:14:10,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:14:10,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 05:14:10,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805726408] [2020-10-14 05:14:10,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 05:14:10,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:10,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 05:14:10,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=336, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:14:10,424 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 24 states. [2020-10-14 05:14:10,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:10,760 INFO L93 Difference]: Finished difference Result 216 states and 258 transitions. [2020-10-14 05:14:10,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 05:14:10,761 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 123 [2020-10-14 05:14:10,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:10,762 INFO L225 Difference]: With dead ends: 216 [2020-10-14 05:14:10,763 INFO L226 Difference]: Without dead ends: 132 [2020-10-14 05:14:10,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:14:10,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-14 05:14:10,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-10-14 05:14:10,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-14 05:14:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-10-14 05:14:10,770 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 123 [2020-10-14 05:14:10,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:10,771 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-10-14 05:14:10,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 05:14:10,771 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-10-14 05:14:10,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 05:14:10,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:10,772 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:14:10,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 05:14:10,773 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:10,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:10,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1717321323, now seen corresponding path program 21 times [2020-10-14 05:14:10,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:10,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943341450] [2020-10-14 05:14:10,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:10,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:10,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:15,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:15,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 05:14:15,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:14:15,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 05:14:15,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:15,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 05:14:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 05:14:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 05:14:15,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:16,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:16,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:16,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:16,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:14:16,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:16,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:14:16,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:16,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:16,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:16,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:16,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:16,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:16,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2020-10-14 05:14:16,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943341450] [2020-10-14 05:14:16,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:14:16,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 05:14:16,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733876398] [2020-10-14 05:14:16,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 05:14:16,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:16,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 05:14:16,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=363, Unknown=0, NotChecked=0, Total=600 [2020-10-14 05:14:16,182 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 25 states. [2020-10-14 05:14:16,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:16,515 INFO L93 Difference]: Finished difference Result 226 states and 270 transitions. [2020-10-14 05:14:16,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 05:14:16,516 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 129 [2020-10-14 05:14:16,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:16,517 INFO L225 Difference]: With dead ends: 226 [2020-10-14 05:14:16,517 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 05:14:16,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=247, Invalid=455, Unknown=0, NotChecked=0, Total=702 [2020-10-14 05:14:16,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 05:14:16,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-10-14 05:14:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-14 05:14:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 158 transitions. [2020-10-14 05:14:16,528 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 158 transitions. Word has length 129 [2020-10-14 05:14:16,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:16,530 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 158 transitions. [2020-10-14 05:14:16,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 05:14:16,530 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 158 transitions. [2020-10-14 05:14:16,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 05:14:16,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:16,531 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:14:16,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 05:14:16,532 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:16,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:16,532 INFO L82 PathProgramCache]: Analyzing trace with hash -148330834, now seen corresponding path program 22 times [2020-10-14 05:14:16,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:16,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649963894] [2020-10-14 05:14:16,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:16,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:17,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:21,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:21,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 05:14:21,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:14:21,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 05:14:21,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:21,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:21,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 05:14:21,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 05:14:21,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 05:14:21,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:21,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:21,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:21,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:21,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:14:21,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:21,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:14:21,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:21,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:21,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:21,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:21,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:21,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2020-10-14 05:14:21,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649963894] [2020-10-14 05:14:21,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:14:21,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 05:14:21,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510099568] [2020-10-14 05:14:21,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 05:14:21,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:21,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 05:14:21,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=391, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:14:21,924 INFO L87 Difference]: Start difference. First operand 136 states and 158 transitions. Second operand 26 states. [2020-10-14 05:14:22,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:22,259 INFO L93 Difference]: Finished difference Result 236 states and 282 transitions. [2020-10-14 05:14:22,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 05:14:22,260 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 135 [2020-10-14 05:14:22,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:22,261 INFO L225 Difference]: With dead ends: 236 [2020-10-14 05:14:22,262 INFO L226 Difference]: Without dead ends: 144 [2020-10-14 05:14:22,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=269, Invalid=487, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:14:22,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-14 05:14:22,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2020-10-14 05:14:22,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-14 05:14:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 165 transitions. [2020-10-14 05:14:22,269 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 165 transitions. Word has length 135 [2020-10-14 05:14:22,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:22,270 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 165 transitions. [2020-10-14 05:14:22,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 05:14:22,270 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 165 transitions. [2020-10-14 05:14:22,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 05:14:22,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:22,272 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:14:22,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 05:14:22,272 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:22,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:22,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1433392953, now seen corresponding path program 23 times [2020-10-14 05:14:22,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:22,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585901598] [2020-10-14 05:14:22,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:22,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:22,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:27,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:27,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 05:14:27,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:14:27,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 05:14:27,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:27,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 05:14:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 05:14:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 05:14:27,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:27,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:27,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:27,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:27,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:14:27,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:27,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:14:27,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:27,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:27,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:27,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:27,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:27,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2020-10-14 05:14:27,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585901598] [2020-10-14 05:14:27,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:14:27,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 05:14:27,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968244226] [2020-10-14 05:14:27,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 05:14:27,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:27,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 05:14:27,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=420, Unknown=0, NotChecked=0, Total=702 [2020-10-14 05:14:27,732 INFO L87 Difference]: Start difference. First operand 142 states and 165 transitions. Second operand 27 states. [2020-10-14 05:14:28,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:28,055 INFO L93 Difference]: Finished difference Result 246 states and 294 transitions. [2020-10-14 05:14:28,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 05:14:28,056 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 141 [2020-10-14 05:14:28,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:28,057 INFO L225 Difference]: With dead ends: 246 [2020-10-14 05:14:28,058 INFO L226 Difference]: Without dead ends: 150 [2020-10-14 05:14:28,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=292, Invalid=520, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:14:28,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-14 05:14:28,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2020-10-14 05:14:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-14 05:14:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 172 transitions. [2020-10-14 05:14:28,064 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 172 transitions. Word has length 141 [2020-10-14 05:14:28,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:28,065 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 172 transitions. [2020-10-14 05:14:28,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 05:14:28,065 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 172 transitions. [2020-10-14 05:14:28,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 05:14:28,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:28,067 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:14:28,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 05:14:28,068 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:28,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:28,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1942005728, now seen corresponding path program 24 times [2020-10-14 05:14:28,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:28,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140841408] [2020-10-14 05:14:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:28,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:28,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:33,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:33,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 05:14:33,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:14:33,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 05:14:33,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:33,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 05:14:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 05:14:33,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 05:14:33,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:33,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:33,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:33,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:33,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:14:33,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:33,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:14:33,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:33,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:33,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:33,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:33,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:33,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:33,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2020-10-14 05:14:33,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140841408] [2020-10-14 05:14:33,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:14:33,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 05:14:33,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458125600] [2020-10-14 05:14:33,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 05:14:33,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:33,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 05:14:33,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=450, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:14:33,529 INFO L87 Difference]: Start difference. First operand 148 states and 172 transitions. Second operand 28 states. [2020-10-14 05:14:33,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:33,888 INFO L93 Difference]: Finished difference Result 256 states and 306 transitions. [2020-10-14 05:14:33,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 05:14:33,889 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 147 [2020-10-14 05:14:33,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:33,890 INFO L225 Difference]: With dead ends: 256 [2020-10-14 05:14:33,890 INFO L226 Difference]: Without dead ends: 156 [2020-10-14 05:14:33,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=316, Invalid=554, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:14:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-14 05:14:33,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 154. [2020-10-14 05:14:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-14 05:14:33,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 179 transitions. [2020-10-14 05:14:33,898 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 179 transitions. Word has length 147 [2020-10-14 05:14:33,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:33,898 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 179 transitions. [2020-10-14 05:14:33,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 05:14:33,898 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 179 transitions. [2020-10-14 05:14:33,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 05:14:33,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:33,900 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:14:33,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 05:14:33,900 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:33,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:33,900 INFO L82 PathProgramCache]: Analyzing trace with hash 524846073, now seen corresponding path program 25 times [2020-10-14 05:14:33,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:33,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146288898] [2020-10-14 05:14:33,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:33,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:34,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:38,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:38,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 05:14:38,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:14:38,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 05:14:38,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:38,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:38,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 05:14:38,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 05:14:38,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 05:14:38,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:39,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:39,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:39,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:39,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:14:39,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:39,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:14:39,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:39,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:39,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:39,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:39,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:39,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:14:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2020-10-14 05:14:39,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146288898] [2020-10-14 05:14:39,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:14:39,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 05:14:39,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894610535] [2020-10-14 05:14:39,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 05:14:39,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:39,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 05:14:39,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=481, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:14:39,579 INFO L87 Difference]: Start difference. First operand 154 states and 179 transitions. Second operand 29 states. [2020-10-14 05:14:40,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:40,062 INFO L93 Difference]: Finished difference Result 266 states and 318 transitions. [2020-10-14 05:14:40,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 05:14:40,062 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 153 [2020-10-14 05:14:40,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:40,064 INFO L225 Difference]: With dead ends: 266 [2020-10-14 05:14:40,064 INFO L226 Difference]: Without dead ends: 162 [2020-10-14 05:14:40,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=341, Invalid=589, Unknown=0, NotChecked=0, Total=930 [2020-10-14 05:14:40,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-14 05:14:40,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2020-10-14 05:14:40,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-14 05:14:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 186 transitions. [2020-10-14 05:14:40,079 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 186 transitions. Word has length 153 [2020-10-14 05:14:40,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:40,080 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 186 transitions. [2020-10-14 05:14:40,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 05:14:40,080 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 186 transitions. [2020-10-14 05:14:40,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 05:14:40,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:40,081 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:14:40,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 05:14:40,082 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:40,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:40,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1885216018, now seen corresponding path program 26 times [2020-10-14 05:14:40,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:40,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116448] [2020-10-14 05:14:40,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:40,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:40,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:45,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:45,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 05:14:45,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:14:45,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 05:14:45,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:45,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:45,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 05:14:45,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-14 05:14:45,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 05:14:45,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:45,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:45,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:45,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:45,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:14:45,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:45,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:14:45,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:45,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:45,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:45,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:45,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2020-10-14 05:14:45,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116448] [2020-10-14 05:14:45,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:14:45,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 05:14:45,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498312007] [2020-10-14 05:14:45,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 05:14:45,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:45,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 05:14:45,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=513, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:14:45,679 INFO L87 Difference]: Start difference. First operand 160 states and 186 transitions. Second operand 30 states. [2020-10-14 05:14:46,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:46,074 INFO L93 Difference]: Finished difference Result 276 states and 330 transitions. [2020-10-14 05:14:46,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 05:14:46,075 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 159 [2020-10-14 05:14:46,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:46,076 INFO L225 Difference]: With dead ends: 276 [2020-10-14 05:14:46,077 INFO L226 Difference]: Without dead ends: 168 [2020-10-14 05:14:46,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=367, Invalid=625, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:14:46,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-14 05:14:46,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2020-10-14 05:14:46,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-14 05:14:46,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 193 transitions. [2020-10-14 05:14:46,085 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 193 transitions. Word has length 159 [2020-10-14 05:14:46,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:46,085 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 193 transitions. [2020-10-14 05:14:46,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 05:14:46,085 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 193 transitions. [2020-10-14 05:14:46,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 05:14:46,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:46,087 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:14:46,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 05:14:46,087 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:46,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:46,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1965042901, now seen corresponding path program 27 times [2020-10-14 05:14:46,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:46,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857369392] [2020-10-14 05:14:46,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:46,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:46,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:51,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:51,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-14 05:14:51,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:14:51,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 05:14:51,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:51,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:51,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 05:14:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 05:14:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 05:14:51,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:51,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:51,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:51,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:51,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:14:51,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:51,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:14:51,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:51,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:51,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:51,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:51,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:51,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:14:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2020-10-14 05:14:51,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857369392] [2020-10-14 05:14:51,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:14:51,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 05:14:51,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666234999] [2020-10-14 05:14:51,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 05:14:51,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:51,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 05:14:51,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=546, Unknown=0, NotChecked=0, Total=930 [2020-10-14 05:14:51,690 INFO L87 Difference]: Start difference. First operand 166 states and 193 transitions. Second operand 31 states. [2020-10-14 05:14:52,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:52,086 INFO L93 Difference]: Finished difference Result 286 states and 342 transitions. [2020-10-14 05:14:52,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 05:14:52,086 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 165 [2020-10-14 05:14:52,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:52,087 INFO L225 Difference]: With dead ends: 286 [2020-10-14 05:14:52,088 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 05:14:52,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=662, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:14:52,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 05:14:52,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2020-10-14 05:14:52,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-14 05:14:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 200 transitions. [2020-10-14 05:14:52,096 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 200 transitions. Word has length 165 [2020-10-14 05:14:52,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:52,096 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 200 transitions. [2020-10-14 05:14:52,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 05:14:52,096 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 200 transitions. [2020-10-14 05:14:52,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 05:14:52,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:52,097 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:14:52,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 05:14:52,098 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:52,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:52,098 INFO L82 PathProgramCache]: Analyzing trace with hash -581695932, now seen corresponding path program 28 times [2020-10-14 05:14:52,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:52,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16821652] [2020-10-14 05:14:52,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:52,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:53,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:57,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:57,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 05:14:57,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:14:57,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 05:14:57,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:57,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:57,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 05:14:57,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-14 05:14:57,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 05:14:57,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:57,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:57,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:57,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:57,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:14:57,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:57,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:14:57,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:57,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:57,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:57,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:57,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:57,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2020-10-14 05:14:57,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16821652] [2020-10-14 05:14:57,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:14:57,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:14:57,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046439946] [2020-10-14 05:14:57,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:14:57,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:57,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:14:57,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=580, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:14:57,695 INFO L87 Difference]: Start difference. First operand 172 states and 200 transitions. Second operand 32 states. [2020-10-14 05:14:58,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:58,091 INFO L93 Difference]: Finished difference Result 296 states and 354 transitions. [2020-10-14 05:14:58,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 05:14:58,091 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 171 [2020-10-14 05:14:58,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:58,093 INFO L225 Difference]: With dead ends: 296 [2020-10-14 05:14:58,093 INFO L226 Difference]: Without dead ends: 180 [2020-10-14 05:14:58,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=422, Invalid=700, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:14:58,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-14 05:14:58,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2020-10-14 05:14:58,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-14 05:14:58,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 207 transitions. [2020-10-14 05:14:58,101 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 207 transitions. Word has length 171 [2020-10-14 05:14:58,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:58,102 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 207 transitions. [2020-10-14 05:14:58,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:14:58,102 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 207 transitions. [2020-10-14 05:14:58,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 05:14:58,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:58,103 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:14:58,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 05:14:58,104 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:58,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:58,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1964435875, now seen corresponding path program 29 times [2020-10-14 05:14:58,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:58,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632394818] [2020-10-14 05:14:58,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:58,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:58,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:03,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:03,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 05:15:03,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:15:03,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 05:15:03,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:03,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 05:15:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 05:15:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 05:15:03,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:15:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:03,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:03,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:03,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:15:03,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:15:03,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:15:03,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:03,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:03,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:15:03,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:15:03,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:15:03,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2020-10-14 05:15:03,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632394818] [2020-10-14 05:15:03,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:15:03,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 05:15:03,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192083887] [2020-10-14 05:15:03,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 05:15:03,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:15:03,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 05:15:03,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=615, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:15:03,739 INFO L87 Difference]: Start difference. First operand 178 states and 207 transitions. Second operand 33 states. [2020-10-14 05:15:04,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:15:04,220 INFO L93 Difference]: Finished difference Result 306 states and 366 transitions. [2020-10-14 05:15:04,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 05:15:04,221 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 177 [2020-10-14 05:15:04,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:15:04,222 INFO L225 Difference]: With dead ends: 306 [2020-10-14 05:15:04,222 INFO L226 Difference]: Without dead ends: 186 [2020-10-14 05:15:04,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=451, Invalid=739, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 05:15:04,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-14 05:15:04,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2020-10-14 05:15:04,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-14 05:15:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 214 transitions. [2020-10-14 05:15:04,231 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 214 transitions. Word has length 177 [2020-10-14 05:15:04,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:15:04,231 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 214 transitions. [2020-10-14 05:15:04,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 05:15:04,232 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 214 transitions. [2020-10-14 05:15:04,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 05:15:04,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:15:04,233 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:15:04,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 05:15:04,233 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:15:04,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:15:04,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1433756534, now seen corresponding path program 30 times [2020-10-14 05:15:04,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:15:04,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140369386] [2020-10-14 05:15:04,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:15:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:04,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:05,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:09,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:09,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 05:15:09,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:15:09,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-14 05:15:09,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:09,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:09,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 05:15:09,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 05:15:09,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 05:15:09,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:09,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:15:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:09,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:09,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:09,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:15:09,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:15:09,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:15:09,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:09,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:15:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:15:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:15:09,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2020-10-14 05:15:09,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140369386] [2020-10-14 05:15:09,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:15:09,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 05:15:09,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281561726] [2020-10-14 05:15:09,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 05:15:09,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:15:09,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 05:15:09,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=651, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:15:09,973 INFO L87 Difference]: Start difference. First operand 184 states and 214 transitions. Second operand 34 states. [2020-10-14 05:15:10,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:15:10,481 INFO L93 Difference]: Finished difference Result 316 states and 378 transitions. [2020-10-14 05:15:10,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 05:15:10,482 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 183 [2020-10-14 05:15:10,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:15:10,484 INFO L225 Difference]: With dead ends: 316 [2020-10-14 05:15:10,484 INFO L226 Difference]: Without dead ends: 192 [2020-10-14 05:15:10,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=481, Invalid=779, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:15:10,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-14 05:15:10,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2020-10-14 05:15:10,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-14 05:15:10,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 221 transitions. [2020-10-14 05:15:10,500 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 221 transitions. Word has length 183 [2020-10-14 05:15:10,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:15:10,500 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 221 transitions. [2020-10-14 05:15:10,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 05:15:10,500 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 221 transitions. [2020-10-14 05:15:10,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 05:15:10,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:15:10,502 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:15:10,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 05:15:10,502 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:15:10,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:15:10,503 INFO L82 PathProgramCache]: Analyzing trace with hash 125259151, now seen corresponding path program 31 times [2020-10-14 05:15:10,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:15:10,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107873408] [2020-10-14 05:15:10,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:15:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:10,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:12,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:15,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:15,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 05:15:15,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:15:15,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 05:15:15,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:15,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:15,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 05:15:15,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 05:15:15,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 05:15:15,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:16,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:15:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:16,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:16,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:16,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:15:16,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:15:16,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:15:16,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:16,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:16,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:15:16,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:15:16,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:15:16,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2552 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2020-10-14 05:15:16,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107873408] [2020-10-14 05:15:16,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:15:16,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 05:15:16,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548618214] [2020-10-14 05:15:16,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 05:15:16,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:15:16,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 05:15:16,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=688, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 05:15:16,259 INFO L87 Difference]: Start difference. First operand 190 states and 221 transitions. Second operand 35 states. [2020-10-14 05:15:16,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:15:16,753 INFO L93 Difference]: Finished difference Result 326 states and 390 transitions. [2020-10-14 05:15:16,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 05:15:16,754 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 189 [2020-10-14 05:15:16,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:15:16,755 INFO L225 Difference]: With dead ends: 326 [2020-10-14 05:15:16,755 INFO L226 Difference]: Without dead ends: 198 [2020-10-14 05:15:16,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=512, Invalid=820, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 05:15:16,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-14 05:15:16,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2020-10-14 05:15:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-14 05:15:16,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 228 transitions. [2020-10-14 05:15:16,764 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 228 transitions. Word has length 189 [2020-10-14 05:15:16,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:15:16,764 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 228 transitions. [2020-10-14 05:15:16,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 05:15:16,764 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 228 transitions. [2020-10-14 05:15:16,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-14 05:15:16,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:15:16,766 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:15:16,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 05:15:16,766 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:15:16,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:15:16,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1578448040, now seen corresponding path program 32 times [2020-10-14 05:15:16,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:15:16,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195973715] [2020-10-14 05:15:16,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:15:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:16,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:18,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:21,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:21,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 05:15:21,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:15:21,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 05:15:21,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:21,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 05:15:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 05:15:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 05:15:21,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:22,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:15:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:22,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:22,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:22,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:15:22,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:15:22,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:15:22,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:22,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:22,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:15:22,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:15:22,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:15:22,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2020-10-14 05:15:22,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195973715] [2020-10-14 05:15:22,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:15:22,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 05:15:22,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847327337] [2020-10-14 05:15:22,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 05:15:22,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:15:22,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 05:15:22,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=726, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:15:22,544 INFO L87 Difference]: Start difference. First operand 196 states and 228 transitions. Second operand 36 states. [2020-10-14 05:15:22,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:15:22,980 INFO L93 Difference]: Finished difference Result 336 states and 402 transitions. [2020-10-14 05:15:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 05:15:22,981 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 195 [2020-10-14 05:15:22,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:15:22,982 INFO L225 Difference]: With dead ends: 336 [2020-10-14 05:15:22,982 INFO L226 Difference]: Without dead ends: 204 [2020-10-14 05:15:22,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=544, Invalid=862, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 05:15:22,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-14 05:15:22,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2020-10-14 05:15:22,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-14 05:15:22,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 235 transitions. [2020-10-14 05:15:22,993 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 235 transitions. Word has length 195 [2020-10-14 05:15:22,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:15:22,995 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 235 transitions. [2020-10-14 05:15:22,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 05:15:22,995 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 235 transitions. [2020-10-14 05:15:22,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 05:15:22,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:15:22,996 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:15:22,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 05:15:22,997 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:15:22,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:15:22,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1931311297, now seen corresponding path program 33 times [2020-10-14 05:15:22,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:15:22,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391657256] [2020-10-14 05:15:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:15:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:23,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:24,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:28,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:28,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-14 05:15:28,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:15:28,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 05:15:28,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:28,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 05:15:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 05:15:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 05:15:28,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:28,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:15:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:28,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:28,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:28,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:15:28,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:15:28,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:15:28,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:28,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:15:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:15:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:15:28,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2020-10-14 05:15:28,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391657256] [2020-10-14 05:15:28,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:15:28,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 05:15:28,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240394024] [2020-10-14 05:15:28,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 05:15:28,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:15:28,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 05:15:28,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=567, Invalid=765, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 05:15:28,840 INFO L87 Difference]: Start difference. First operand 202 states and 235 transitions. Second operand 37 states. [2020-10-14 05:15:29,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:15:29,370 INFO L93 Difference]: Finished difference Result 346 states and 414 transitions. [2020-10-14 05:15:29,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 05:15:29,371 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 201 [2020-10-14 05:15:29,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:15:29,373 INFO L225 Difference]: With dead ends: 346 [2020-10-14 05:15:29,373 INFO L226 Difference]: Without dead ends: 210 [2020-10-14 05:15:29,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=577, Invalid=905, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 05:15:29,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-14 05:15:29,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2020-10-14 05:15:29,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-14 05:15:29,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 242 transitions. [2020-10-14 05:15:29,382 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 242 transitions. Word has length 201 [2020-10-14 05:15:29,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:15:29,382 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 242 transitions. [2020-10-14 05:15:29,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 05:15:29,382 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 242 transitions. [2020-10-14 05:15:29,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-14 05:15:29,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:15:29,383 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:15:29,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 05:15:29,384 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:15:29,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:15:29,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1492747814, now seen corresponding path program 34 times [2020-10-14 05:15:29,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:15:29,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020686260] [2020-10-14 05:15:29,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:15:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:29,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:31,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:34,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:34,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 05:15:34,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:15:34,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 05:15:34,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:34,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 05:15:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 05:15:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 05:15:34,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:35,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:15:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:35,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:35,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:35,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:15:35,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:15:35,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:15:35,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:35,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:15:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:15:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:15:35,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2020-10-14 05:15:35,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020686260] [2020-10-14 05:15:35,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:15:35,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 05:15:35,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767279507] [2020-10-14 05:15:35,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 05:15:35,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:15:35,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 05:15:35,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=805, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 05:15:35,276 INFO L87 Difference]: Start difference. First operand 208 states and 242 transitions. Second operand 38 states. [2020-10-14 05:15:35,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:15:35,755 INFO L93 Difference]: Finished difference Result 356 states and 426 transitions. [2020-10-14 05:15:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 05:15:35,756 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 207 [2020-10-14 05:15:35,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:15:35,757 INFO L225 Difference]: With dead ends: 356 [2020-10-14 05:15:35,757 INFO L226 Difference]: Without dead ends: 216 [2020-10-14 05:15:35,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=611, Invalid=949, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 05:15:35,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-14 05:15:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 214. [2020-10-14 05:15:35,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-14 05:15:35,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 249 transitions. [2020-10-14 05:15:35,768 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 249 transitions. Word has length 207 [2020-10-14 05:15:35,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:15:35,768 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 249 transitions. [2020-10-14 05:15:35,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 05:15:35,768 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 249 transitions. [2020-10-14 05:15:35,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 05:15:35,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:15:35,771 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:15:35,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 05:15:35,771 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:15:35,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:15:35,772 INFO L82 PathProgramCache]: Analyzing trace with hash 183408627, now seen corresponding path program 35 times [2020-10-14 05:15:35,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:15:35,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942442100] [2020-10-14 05:15:35,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:15:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:35,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:38,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:40,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:40,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-14 05:15:40,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:15:40,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 05:15:40,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:40,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 05:15:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 05:15:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 05:15:40,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:41,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:15:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:41,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:41,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:41,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:15:41,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:15:41,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:15:41,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:41,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:41,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:15:41,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:15:41,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:15:41,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3300 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2020-10-14 05:15:41,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942442100] [2020-10-14 05:15:41,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:15:41,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-14 05:15:41,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960079593] [2020-10-14 05:15:41,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-14 05:15:41,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:15:41,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-14 05:15:41,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=636, Invalid=846, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 05:15:41,722 INFO L87 Difference]: Start difference. First operand 214 states and 249 transitions. Second operand 39 states. [2020-10-14 05:15:42,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:15:42,308 INFO L93 Difference]: Finished difference Result 366 states and 438 transitions. [2020-10-14 05:15:42,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 05:15:42,309 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 213 [2020-10-14 05:15:42,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:15:42,311 INFO L225 Difference]: With dead ends: 366 [2020-10-14 05:15:42,311 INFO L226 Difference]: Without dead ends: 222 [2020-10-14 05:15:42,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=646, Invalid=994, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 05:15:42,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-14 05:15:42,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2020-10-14 05:15:42,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-14 05:15:42,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 256 transitions. [2020-10-14 05:15:42,319 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 256 transitions. Word has length 213 [2020-10-14 05:15:42,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:15:42,319 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 256 transitions. [2020-10-14 05:15:42,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-14 05:15:42,320 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 256 transitions. [2020-10-14 05:15:42,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-14 05:15:42,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:15:42,321 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:15:42,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 05:15:42,321 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:15:42,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:15:42,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1251750668, now seen corresponding path program 36 times [2020-10-14 05:15:42,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:15:42,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637004700] [2020-10-14 05:15:42,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:15:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:42,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:42,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:47,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:47,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 05:15:47,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:15:47,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 05:15:47,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:47,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:47,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 05:15:47,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 05:15:47,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 05:15:47,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:48,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:15:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:48,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:48,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:48,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:15:48,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:15:48,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:15:48,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:48,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:15:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:15:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:15:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3502 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2020-10-14 05:15:48,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637004700] [2020-10-14 05:15:48,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:15:48,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 05:15:48,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448619796] [2020-10-14 05:15:48,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 05:15:48,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:15:48,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 05:15:48,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=888, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 05:15:48,330 INFO L87 Difference]: Start difference. First operand 220 states and 256 transitions. Second operand 40 states. [2020-10-14 05:15:48,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:15:48,899 INFO L93 Difference]: Finished difference Result 376 states and 450 transitions. [2020-10-14 05:15:48,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 05:15:48,900 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 219 [2020-10-14 05:15:48,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:15:48,902 INFO L225 Difference]: With dead ends: 376 [2020-10-14 05:15:48,903 INFO L226 Difference]: Without dead ends: 228 [2020-10-14 05:15:48,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=682, Invalid=1040, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 05:15:48,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-14 05:15:48,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2020-10-14 05:15:48,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-14 05:15:48,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 263 transitions. [2020-10-14 05:15:48,911 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 263 transitions. Word has length 219 [2020-10-14 05:15:48,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:15:48,911 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 263 transitions. [2020-10-14 05:15:48,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 05:15:48,912 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 263 transitions. [2020-10-14 05:15:48,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-14 05:15:48,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:15:48,913 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:15:48,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 05:15:48,914 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:15:48,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:15:48,914 INFO L82 PathProgramCache]: Analyzing trace with hash 377334565, now seen corresponding path program 37 times [2020-10-14 05:15:48,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:15:48,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965036722] [2020-10-14 05:15:48,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:15:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:48,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:49,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:53,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:53,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-14 05:15:53,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:15:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 05:15:53,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:53,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 05:15:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 05:15:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 05:15:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:54,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:15:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:54,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:54,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:54,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:15:54,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:15:54,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:15:54,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:54,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:54,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:15:54,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:15:54,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:15:54,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:54,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3710 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2020-10-14 05:15:54,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965036722] [2020-10-14 05:15:54,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:15:54,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-14 05:15:54,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109004689] [2020-10-14 05:15:54,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-14 05:15:54,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:15:54,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-14 05:15:54,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=709, Invalid=931, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 05:15:54,894 INFO L87 Difference]: Start difference. First operand 226 states and 263 transitions. Second operand 41 states. [2020-10-14 05:15:55,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:15:55,480 INFO L93 Difference]: Finished difference Result 386 states and 462 transitions. [2020-10-14 05:15:55,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 05:15:55,481 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 225 [2020-10-14 05:15:55,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:15:55,483 INFO L225 Difference]: With dead ends: 386 [2020-10-14 05:15:55,483 INFO L226 Difference]: Without dead ends: 234 [2020-10-14 05:15:55,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=719, Invalid=1087, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 05:15:55,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-14 05:15:55,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 232. [2020-10-14 05:15:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-14 05:15:55,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 270 transitions. [2020-10-14 05:15:55,492 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 270 transitions. Word has length 225 [2020-10-14 05:15:55,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:15:55,493 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 270 transitions. [2020-10-14 05:15:55,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-14 05:15:55,493 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 270 transitions. [2020-10-14 05:15:55,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-14 05:15:55,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:15:55,494 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:15:55,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 05:15:55,495 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:15:55,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:15:55,495 INFO L82 PathProgramCache]: Analyzing trace with hash 229204030, now seen corresponding path program 38 times [2020-10-14 05:15:55,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:15:55,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520155878] [2020-10-14 05:15:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:15:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:55,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:58,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:00,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:00,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-14 05:16:00,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:16:00,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 05:16:00,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:00,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:00,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 05:16:00,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 05:16:00,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 05:16:00,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:01,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:16:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:01,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:01,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:01,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:16:01,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:01,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:16:01,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:01,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:01,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:16:01,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:16:01,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:16:01,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:01,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2020-10-14 05:16:01,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520155878] [2020-10-14 05:16:01,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:16:01,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-14 05:16:01,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785375035] [2020-10-14 05:16:01,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-14 05:16:01,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:16:01,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-14 05:16:01,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=747, Invalid=975, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 05:16:01,626 INFO L87 Difference]: Start difference. First operand 232 states and 270 transitions. Second operand 42 states. [2020-10-14 05:16:02,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:16:02,145 INFO L93 Difference]: Finished difference Result 396 states and 474 transitions. [2020-10-14 05:16:02,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 05:16:02,146 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 231 [2020-10-14 05:16:02,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:16:02,148 INFO L225 Difference]: With dead ends: 396 [2020-10-14 05:16:02,148 INFO L226 Difference]: Without dead ends: 240 [2020-10-14 05:16:02,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=757, Invalid=1135, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 05:16:02,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-14 05:16:02,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 238. [2020-10-14 05:16:02,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-14 05:16:02,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 277 transitions. [2020-10-14 05:16:02,157 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 277 transitions. Word has length 231 [2020-10-14 05:16:02,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:16:02,157 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 277 transitions. [2020-10-14 05:16:02,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-14 05:16:02,157 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 277 transitions. [2020-10-14 05:16:02,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 05:16:02,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:16:02,159 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:16:02,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 05:16:02,159 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:16:02,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:16:02,160 INFO L82 PathProgramCache]: Analyzing trace with hash 668840535, now seen corresponding path program 39 times [2020-10-14 05:16:02,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:16:02,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126145329] [2020-10-14 05:16:02,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:16:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:02,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:05,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:07,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:07,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 05:16:07,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:16:07,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-14 05:16:07,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:07,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 05:16:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 05:16:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 05:16:07,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:08,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:16:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:08,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:08,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:08,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:16:08,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:08,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:16:08,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:08,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:08,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:16:08,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:16:08,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:16:08,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4144 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2020-10-14 05:16:08,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126145329] [2020-10-14 05:16:08,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:16:08,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-14 05:16:08,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137111838] [2020-10-14 05:16:08,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-14 05:16:08,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:16:08,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-14 05:16:08,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=786, Invalid=1020, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 05:16:08,476 INFO L87 Difference]: Start difference. First operand 238 states and 277 transitions. Second operand 43 states. [2020-10-14 05:16:08,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:16:08,983 INFO L93 Difference]: Finished difference Result 406 states and 486 transitions. [2020-10-14 05:16:08,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 05:16:08,983 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 237 [2020-10-14 05:16:08,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:16:08,985 INFO L225 Difference]: With dead ends: 406 [2020-10-14 05:16:08,985 INFO L226 Difference]: Without dead ends: 246 [2020-10-14 05:16:08,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=796, Invalid=1184, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 05:16:08,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-14 05:16:08,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2020-10-14 05:16:08,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-14 05:16:08,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 284 transitions. [2020-10-14 05:16:08,995 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 284 transitions. Word has length 237 [2020-10-14 05:16:08,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:16:08,995 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 284 transitions. [2020-10-14 05:16:08,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-14 05:16:08,995 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 284 transitions. [2020-10-14 05:16:08,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-14 05:16:08,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:16:08,997 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:16:08,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 05:16:08,997 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:16:08,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:16:08,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1618935440, now seen corresponding path program 40 times [2020-10-14 05:16:08,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:16:08,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943299590] [2020-10-14 05:16:08,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:16:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:09,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:12,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:14,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:14,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 05:16:14,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:16:14,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 05:16:14,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:14,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:14,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-14 05:16:14,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 05:16:14,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-14 05:16:14,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:15,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:16:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:15,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:15,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:15,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:16:15,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:15,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:16:15,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:15,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:15,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:16:15,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:16:15,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:16:15,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:15,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 1444 trivial. 0 not checked. [2020-10-14 05:16:15,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943299590] [2020-10-14 05:16:15,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:16:15,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-14 05:16:15,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916436183] [2020-10-14 05:16:15,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-14 05:16:15,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:16:15,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-14 05:16:15,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=826, Invalid=1066, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 05:16:15,181 INFO L87 Difference]: Start difference. First operand 244 states and 284 transitions. Second operand 44 states. [2020-10-14 05:16:15,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:16:15,761 INFO L93 Difference]: Finished difference Result 416 states and 498 transitions. [2020-10-14 05:16:15,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 05:16:15,761 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 243 [2020-10-14 05:16:15,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:16:15,763 INFO L225 Difference]: With dead ends: 416 [2020-10-14 05:16:15,763 INFO L226 Difference]: Without dead ends: 252 [2020-10-14 05:16:15,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=836, Invalid=1234, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 05:16:15,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-14 05:16:15,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 250. [2020-10-14 05:16:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-14 05:16:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 291 transitions. [2020-10-14 05:16:15,772 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 291 transitions. Word has length 243 [2020-10-14 05:16:15,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:16:15,772 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 291 transitions. [2020-10-14 05:16:15,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-14 05:16:15,772 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 291 transitions. [2020-10-14 05:16:15,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-14 05:16:15,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:16:15,774 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:16:15,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 05:16:15,774 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:16:15,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:16:15,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1537322377, now seen corresponding path program 41 times [2020-10-14 05:16:15,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:16:15,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823098939] [2020-10-14 05:16:15,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:16:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:15,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:19,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:20,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:20,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-14 05:16:20,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:16:20,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 05:16:20,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:20,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:20,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 05:16:20,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 05:16:20,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-14 05:16:20,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:21,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:16:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:21,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:21,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:21,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:16:21,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:21,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:16:21,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:21,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:21,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:16:21,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:16:21,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:16:21,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4602 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2020-10-14 05:16:21,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823098939] [2020-10-14 05:16:21,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:16:21,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-14 05:16:21,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134784752] [2020-10-14 05:16:21,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-14 05:16:21,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:16:21,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-14 05:16:21,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=867, Invalid=1113, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 05:16:21,984 INFO L87 Difference]: Start difference. First operand 250 states and 291 transitions. Second operand 45 states. [2020-10-14 05:16:22,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:16:22,637 INFO L93 Difference]: Finished difference Result 426 states and 510 transitions. [2020-10-14 05:16:22,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 05:16:22,638 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 249 [2020-10-14 05:16:22,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:16:22,640 INFO L225 Difference]: With dead ends: 426 [2020-10-14 05:16:22,640 INFO L226 Difference]: Without dead ends: 258 [2020-10-14 05:16:22,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=877, Invalid=1285, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 05:16:22,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-14 05:16:22,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2020-10-14 05:16:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-14 05:16:22,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 298 transitions. [2020-10-14 05:16:22,648 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 298 transitions. Word has length 249 [2020-10-14 05:16:22,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:16:22,648 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 298 transitions. [2020-10-14 05:16:22,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-14 05:16:22,648 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 298 transitions. [2020-10-14 05:16:22,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-14 05:16:22,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:16:22,650 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:16:22,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 05:16:22,650 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:16:22,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:16:22,651 INFO L82 PathProgramCache]: Analyzing trace with hash -638183774, now seen corresponding path program 42 times [2020-10-14 05:16:22,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:16:22,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047215864] [2020-10-14 05:16:22,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:16:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:22,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:26,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:27,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:27,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 05:16:27,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:16:27,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-14 05:16:27,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:27,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:27,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-14 05:16:27,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 05:16:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 05:16:27,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:28,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:16:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:28,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:28,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:28,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:16:28,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:28,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:16:28,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:28,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:28,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:16:28,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:16:28,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:16:28,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4840 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 1600 trivial. 0 not checked. [2020-10-14 05:16:28,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047215864] [2020-10-14 05:16:28,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:16:28,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-14 05:16:28,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271913801] [2020-10-14 05:16:28,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-14 05:16:28,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:16:28,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-14 05:16:28,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=909, Invalid=1161, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 05:16:28,937 INFO L87 Difference]: Start difference. First operand 256 states and 298 transitions. Second operand 46 states. [2020-10-14 05:16:29,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:16:29,626 INFO L93 Difference]: Finished difference Result 436 states and 522 transitions. [2020-10-14 05:16:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-14 05:16:29,627 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 255 [2020-10-14 05:16:29,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:16:29,630 INFO L225 Difference]: With dead ends: 436 [2020-10-14 05:16:29,630 INFO L226 Difference]: Without dead ends: 264 [2020-10-14 05:16:29,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=919, Invalid=1337, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 05:16:29,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-14 05:16:29,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2020-10-14 05:16:29,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-14 05:16:29,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 305 transitions. [2020-10-14 05:16:29,637 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 305 transitions. Word has length 255 [2020-10-14 05:16:29,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:16:29,638 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 305 transitions. [2020-10-14 05:16:29,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-14 05:16:29,638 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 305 transitions. [2020-10-14 05:16:29,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-14 05:16:29,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:16:29,639 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:16:29,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 05:16:29,640 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:16:29,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:16:29,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1730372421, now seen corresponding path program 43 times [2020-10-14 05:16:29,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:16:29,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372693435] [2020-10-14 05:16:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:16:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:29,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:33,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:34,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:34,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-14 05:16:34,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:16:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-14 05:16:34,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:34,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-14 05:16:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 05:16:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 05:16:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:35,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:16:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:35,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:35,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:35,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:16:35,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:35,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:16:35,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:35,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:16:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:16:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:16:35,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5084 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 1681 trivial. 0 not checked. [2020-10-14 05:16:36,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372693435] [2020-10-14 05:16:36,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:16:36,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-14 05:16:36,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946828945] [2020-10-14 05:16:36,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-14 05:16:36,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:16:36,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-14 05:16:36,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=952, Invalid=1210, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 05:16:36,007 INFO L87 Difference]: Start difference. First operand 262 states and 305 transitions. Second operand 47 states. [2020-10-14 05:16:36,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:16:36,580 INFO L93 Difference]: Finished difference Result 446 states and 534 transitions. [2020-10-14 05:16:36,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 05:16:36,581 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 261 [2020-10-14 05:16:36,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:16:36,583 INFO L225 Difference]: With dead ends: 446 [2020-10-14 05:16:36,583 INFO L226 Difference]: Without dead ends: 270 [2020-10-14 05:16:36,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=962, Invalid=1390, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 05:16:36,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-14 05:16:36,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 268. [2020-10-14 05:16:36,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-14 05:16:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 312 transitions. [2020-10-14 05:16:36,591 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 312 transitions. Word has length 261 [2020-10-14 05:16:36,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:16:36,592 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 312 transitions. [2020-10-14 05:16:36,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-14 05:16:36,592 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 312 transitions. [2020-10-14 05:16:36,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-14 05:16:36,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:16:36,594 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:16:36,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 05:16:36,594 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:16:36,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:16:36,594 INFO L82 PathProgramCache]: Analyzing trace with hash 22781908, now seen corresponding path program 44 times [2020-10-14 05:16:36,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:16:36,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887896835] [2020-10-14 05:16:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:16:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:36,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:41,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:41,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:41,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 05:16:41,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:16:41,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-14 05:16:41,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:41,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:41,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-14 05:16:41,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 05:16:41,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 05:16:41,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:42,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:16:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:42,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:42,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:42,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:16:42,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:42,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:16:42,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:42,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:16:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:16:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:16:42,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5334 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 1764 trivial. 0 not checked. [2020-10-14 05:16:42,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887896835] [2020-10-14 05:16:42,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:16:42,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-14 05:16:42,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385366907] [2020-10-14 05:16:42,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-14 05:16:42,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:16:42,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-14 05:16:42,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=996, Invalid=1260, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 05:16:42,994 INFO L87 Difference]: Start difference. First operand 268 states and 312 transitions. Second operand 48 states. [2020-10-14 05:16:43,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:16:43,700 INFO L93 Difference]: Finished difference Result 456 states and 546 transitions. [2020-10-14 05:16:43,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-14 05:16:43,701 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 267 [2020-10-14 05:16:43,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:16:43,703 INFO L225 Difference]: With dead ends: 456 [2020-10-14 05:16:43,703 INFO L226 Difference]: Without dead ends: 276 [2020-10-14 05:16:43,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1006, Invalid=1444, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 05:16:43,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-14 05:16:43,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2020-10-14 05:16:43,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-14 05:16:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 319 transitions. [2020-10-14 05:16:43,711 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 319 transitions. Word has length 267 [2020-10-14 05:16:43,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:16:43,711 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 319 transitions. [2020-10-14 05:16:43,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-14 05:16:43,711 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 319 transitions. [2020-10-14 05:16:43,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-14 05:16:43,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:16:43,713 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:16:43,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 05:16:43,713 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:16:43,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:16:43,714 INFO L82 PathProgramCache]: Analyzing trace with hash -786333715, now seen corresponding path program 45 times [2020-10-14 05:16:43,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:16:43,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510075473] [2020-10-14 05:16:43,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:16:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:43,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:48,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:48,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:48,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-14 05:16:48,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:16:48,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 05:16:48,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:48,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-14 05:16:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 05:16:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-14 05:16:48,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:50,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:16:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:50,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:50,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:50,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:16:50,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:50,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:16:50,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:50,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:50,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:16:50,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:16:50,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:16:50,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5590 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2020-10-14 05:16:50,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510075473] [2020-10-14 05:16:50,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:16:50,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-14 05:16:50,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702767770] [2020-10-14 05:16:50,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-14 05:16:50,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:16:50,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-14 05:16:50,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1041, Invalid=1311, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 05:16:50,219 INFO L87 Difference]: Start difference. First operand 274 states and 319 transitions. Second operand 49 states. [2020-10-14 05:16:50,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:16:50,947 INFO L93 Difference]: Finished difference Result 466 states and 558 transitions. [2020-10-14 05:16:50,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-14 05:16:50,948 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 273 [2020-10-14 05:16:50,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:16:50,950 INFO L225 Difference]: With dead ends: 466 [2020-10-14 05:16:50,950 INFO L226 Difference]: Without dead ends: 282 [2020-10-14 05:16:50,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1051, Invalid=1499, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 05:16:50,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-14 05:16:50,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 280. [2020-10-14 05:16:50,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-14 05:16:50,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 326 transitions. [2020-10-14 05:16:50,958 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 326 transitions. Word has length 273 [2020-10-14 05:16:50,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:16:50,958 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 326 transitions. [2020-10-14 05:16:50,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-14 05:16:50,959 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 326 transitions. [2020-10-14 05:16:50,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-14 05:16:50,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:16:50,960 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:16:50,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 05:16:50,961 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:16:50,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:16:50,961 INFO L82 PathProgramCache]: Analyzing trace with hash 75799814, now seen corresponding path program 46 times [2020-10-14 05:16:50,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:16:50,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498829660] [2020-10-14 05:16:50,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:16:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:51,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:56,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:56,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 05:16:56,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:56,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-14 05:16:56,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:56,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-14 05:16:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:16:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 05:16:56,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:57,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:16:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:57,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:16:57,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:16:57,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:16:57,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:16:57,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:16:57,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:16:57,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:16:57,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:16:57,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:16:57,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:16:57,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:16:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 3916 trivial. 0 not checked. [2020-10-14 05:16:57,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498829660] [2020-10-14 05:16:57,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:16:57,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-14 05:16:57,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901075084] [2020-10-14 05:16:57,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-14 05:16:57,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:16:57,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-14 05:16:57,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 05:16:57,503 INFO L87 Difference]: Start difference. First operand 280 states and 326 transitions. Second operand 48 states. [2020-10-14 05:16:58,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:16:58,188 INFO L93 Difference]: Finished difference Result 474 states and 568 transitions. [2020-10-14 05:16:58,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-14 05:16:58,189 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 279 [2020-10-14 05:16:58,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:16:58,191 INFO L225 Difference]: With dead ends: 474 [2020-10-14 05:16:58,191 INFO L226 Difference]: Without dead ends: 289 [2020-10-14 05:16:58,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 05:16:58,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-14 05:16:58,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 282. [2020-10-14 05:16:58,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-14 05:16:58,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 328 transitions. [2020-10-14 05:16:58,199 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 328 transitions. Word has length 279 [2020-10-14 05:16:58,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:16:58,200 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 328 transitions. [2020-10-14 05:16:58,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-14 05:16:58,200 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 328 transitions. [2020-10-14 05:16:58,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-14 05:16:58,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:16:58,202 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:16:58,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 05:16:58,202 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:16:58,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:16:58,203 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407196, now seen corresponding path program 47 times [2020-10-14 05:16:58,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:16:58,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989543294] [2020-10-14 05:16:58,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:16:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:16:58,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:03,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:03,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-14 05:17:03,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:03,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5128 [2020-10-14 05:17:03,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:03,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:03,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-14 05:17:03,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:17:03,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 05:17:03,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0