/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/reducercommutativity/avg10-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 07:37:12,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 07:37:12,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 07:37:12,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 07:37:12,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 07:37:12,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 07:37:12,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 07:37:12,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 07:37:12,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 07:37:12,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 07:37:12,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 07:37:12,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 07:37:12,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 07:37:12,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 07:37:12,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 07:37:12,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 07:37:12,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 07:37:12,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 07:37:12,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 07:37:12,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 07:37:12,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 07:37:12,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 07:37:12,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 07:37:12,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 07:37:12,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 07:37:12,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 07:37:12,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 07:37:12,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 07:37:12,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 07:37:12,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 07:37:12,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 07:37:12,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 07:37:12,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 07:37:12,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 07:37:12,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 07:37:12,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 07:37:12,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 07:37:12,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 07:37:12,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 07:37:12,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 07:37:12,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 07:37:12,902 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 07:37:12,942 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 07:37:12,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 07:37:12,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 07:37:12,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 07:37:12,945 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 07:37:12,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 07:37:12,946 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 07:37:12,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 07:37:12,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 07:37:12,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 07:37:12,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 07:37:12,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 07:37:12,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 07:37:12,948 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 07:37:12,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 07:37:12,949 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 07:37:12,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 07:37:12,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 07:37:12,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 07:37:12,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 07:37:12,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 07:37:12,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:37:12,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 07:37:12,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 07:37:12,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 07:37:12,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 07:37:12,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 07:37:12,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 07:37:12,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 07:37:12,952 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 07:37:13,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 07:37:13,331 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 07:37:13,338 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 07:37:13,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 07:37:13,340 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 07:37:13,341 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg10-2.i [2020-10-14 07:37:13,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a76f589a/2aba878d37fb4d1d8fcccd7b648abef0/FLAGd238a725f [2020-10-14 07:37:13,886 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 07:37:13,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/avg10-2.i [2020-10-14 07:37:13,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a76f589a/2aba878d37fb4d1d8fcccd7b648abef0/FLAGd238a725f [2020-10-14 07:37:14,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a76f589a/2aba878d37fb4d1d8fcccd7b648abef0 [2020-10-14 07:37:14,275 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 07:37:14,277 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 07:37:14,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 07:37:14,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 07:37:14,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 07:37:14,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:37:14" (1/1) ... [2020-10-14 07:37:14,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12925ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:14, skipping insertion in model container [2020-10-14 07:37:14,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:37:14" (1/1) ... [2020-10-14 07:37:14,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 07:37:14,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 07:37:14,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:37:14,541 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 07:37:14,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:37:14,580 INFO L208 MainTranslator]: Completed translation [2020-10-14 07:37:14,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:14 WrapperNode [2020-10-14 07:37:14,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 07:37:14,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 07:37:14,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 07:37:14,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 07:37:14,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:14" (1/1) ... [2020-10-14 07:37:14,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:14" (1/1) ... [2020-10-14 07:37:14,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:14" (1/1) ... [2020-10-14 07:37:14,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:14" (1/1) ... [2020-10-14 07:37:14,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:14" (1/1) ... [2020-10-14 07:37:14,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:14" (1/1) ... [2020-10-14 07:37:14,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:14" (1/1) ... [2020-10-14 07:37:14,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 07:37:14,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 07:37:14,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 07:37:14,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 07:37:14,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:14" (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 07:37:14,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 07:37:14,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 07:37:14,782 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2020-10-14 07:37:14,782 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 07:37:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 07:37:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 07:37:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2020-10-14 07:37:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 07:37:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 07:37:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 07:37:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 07:37:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 07:37:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 07:37:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 07:37:15,116 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 07:37:15,117 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 07:37:15,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:37:15 BoogieIcfgContainer [2020-10-14 07:37:15,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 07:37:15,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 07:37:15,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 07:37:15,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 07:37:15,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:37:14" (1/3) ... [2020-10-14 07:37:15,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484f5be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:37:15, skipping insertion in model container [2020-10-14 07:37:15,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:14" (2/3) ... [2020-10-14 07:37:15,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484f5be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:37:15, skipping insertion in model container [2020-10-14 07:37:15,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:37:15" (3/3) ... [2020-10-14 07:37:15,133 INFO L109 eAbstractionObserver]: Analyzing ICFG avg10-2.i [2020-10-14 07:37:15,143 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 07:37:15,152 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 07:37:15,166 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 07:37:15,187 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 07:37:15,188 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 07:37:15,188 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 07:37:15,188 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 07:37:15,188 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 07:37:15,188 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 07:37:15,188 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 07:37:15,189 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 07:37:15,206 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-14 07:37:15,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:37:15,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:15,214 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:37:15,214 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:15,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:15,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-14 07:37:15,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:15,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138583813] [2020-10-14 07:37:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:15,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:15,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:15,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:16,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:16,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:16,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:16,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:37:16,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:37:16,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1642 [2020-10-14 07:37:16,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:16,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:16,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:16,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:37:16,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:16,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 07:37:17,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:17,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:17,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:17,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:17,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:17,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:37:17,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:17,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:17,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:17,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:37:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:17,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:17,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:17,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:17,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:17,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:17,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 07:37:17,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:17,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:17,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:17,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:17,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:17,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:17,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:37:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:17,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:17,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:17,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:17,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:17,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:17,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 07:37:17,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:17,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:17,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:17,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:17,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:17,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:17,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:37:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:17,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:17,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:17,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:17,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:17,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:17,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 07:37:17,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:17,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:17,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:17,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:37:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:17,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 07:37:17,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138583813] [2020-10-14 07:37:17,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:37:17,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 07:37:17,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131066155] [2020-10-14 07:37:17,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 07:37:17,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:17,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 07:37:17,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:37:17,172 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-14 07:37:17,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:17,280 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-14 07:37:17,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 07:37:17,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 07:37:17,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:17,292 INFO L225 Difference]: With dead ends: 54 [2020-10-14 07:37:17,292 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 07:37:17,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 07:37:17,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 07:37:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-14 07:37:17,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 07:37:17,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-14 07:37:17,352 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-14 07:37:17,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:17,352 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-14 07:37:17,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 07:37:17,352 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-14 07:37:17,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:37:17,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:17,355 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:37:17,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 07:37:17,356 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:17,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:17,356 INFO L82 PathProgramCache]: Analyzing trace with hash 721846027, now seen corresponding path program 1 times [2020-10-14 07:37:17,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:17,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450854209] [2020-10-14 07:37:17,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:17,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:17,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:17,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:17,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:17,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:18,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:18,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:37:18,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:37:18,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1440 [2020-10-14 07:37:18,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:18,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:37:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:37:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:37:18,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:18,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:18,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:18,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:18,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:18,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:18,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:37:18,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:18,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:18,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:18,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:37:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:18,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:18,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:18,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:18,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:18,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:18,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 07:37:18,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:18,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:18,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:18,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:37:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:18,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:18,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:18,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:18,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:18,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 07:37:18,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:18,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:18,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:37:18,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:37:18,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:37:18,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:18,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:37:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:18,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:18,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:18,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:18,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:18,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:18,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 07:37:18,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:18,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:37:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 07:37:18,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450854209] [2020-10-14 07:37:18,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:18,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 07:37:18,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739932541] [2020-10-14 07:37:18,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:37:18,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:18,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:37:18,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:37:18,935 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-14 07:37:19,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:19,056 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-14 07:37:19,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:37:19,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 07:37:19,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:19,059 INFO L225 Difference]: With dead ends: 45 [2020-10-14 07:37:19,059 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 07:37:19,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:37:19,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 07:37:19,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-14 07:37:19,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 07:37:19,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-14 07:37:19,078 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-14 07:37:19,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:19,079 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-14 07:37:19,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:37:19,083 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-14 07:37:19,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 07:37:19,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:19,085 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:37:19,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 07:37:19,086 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:19,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:19,086 INFO L82 PathProgramCache]: Analyzing trace with hash 540504713, now seen corresponding path program 1 times [2020-10-14 07:37:19,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:19,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275836589] [2020-10-14 07:37:19,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:19,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:19,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:19,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:19,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:19,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:22,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 07:37:22,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:22,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3435 [2020-10-14 07:37:22,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:22,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:37:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:37:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:37:22,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:22,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:22,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:22,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:22,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:22,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:37:22,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:22,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:22,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:22,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:22,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:22,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:22,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:37:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:22,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:22,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:22,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:22,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 07:37:22,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:22,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:37:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:22,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:22,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 07:37:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:22,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:22,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:22,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:22,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 07:37:22,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:22,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:22,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:22,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:37:22,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:22,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:22,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:37:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:22,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:22,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:22,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:37:22,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:22,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:37:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:22,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:22,721 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 07:37:22,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275836589] [2020-10-14 07:37:22,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:37:22,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:37:22,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309005026] [2020-10-14 07:37:22,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:37:22,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:22,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:37:22,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:37:22,725 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-14 07:37:22,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:22,796 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-10-14 07:37:22,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:37:22,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-14 07:37:22,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:22,797 INFO L225 Difference]: With dead ends: 48 [2020-10-14 07:37:22,798 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 07:37:22,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 07:37:22,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 07:37:22,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-14 07:37:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 07:37:22,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-14 07:37:22,806 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-14 07:37:22,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:22,806 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-14 07:37:22,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:37:22,806 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-14 07:37:22,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 07:37:22,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:22,808 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:37:22,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 07:37:22,809 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:22,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:22,809 INFO L82 PathProgramCache]: Analyzing trace with hash 2063023467, now seen corresponding path program 1 times [2020-10-14 07:37:22,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:22,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118224156] [2020-10-14 07:37:22,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:22,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:22,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:23,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:27,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:27,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:37:27,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:27,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 07:37:27,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:27,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:37:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 07:37:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:37:27,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:27,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:27,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:27,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:27,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:27,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:27,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:37:27,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:27,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:27,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:27,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 07:37:27,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:37:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:27,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:27,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:27,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:27,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:27,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:27,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 07:37:27,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:27,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:27,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:27,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:37:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:27,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:27,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:27,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:27,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:27,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:27,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 07:37:27,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:27,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:27,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:27,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:27,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:27,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:37:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:27,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:27,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:27,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:27,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:27,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:27,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 07:37:27,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:27,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:37:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:27,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:27,982 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-14 07:37:27,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118224156] [2020-10-14 07:37:27,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:37:27,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:37:27,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836554278] [2020-10-14 07:37:27,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:37:27,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:27,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:37:27,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:37:27,988 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-14 07:37:28,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:28,091 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-14 07:37:28,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:37:28,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-14 07:37:28,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:28,094 INFO L225 Difference]: With dead ends: 43 [2020-10-14 07:37:28,094 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 07:37:28,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 07:37:28,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 07:37:28,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-14 07:37:28,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 07:37:28,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-14 07:37:28,104 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-14 07:37:28,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:28,106 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-14 07:37:28,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:37:28,106 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-14 07:37:28,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 07:37:28,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:28,109 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:37:28,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 07:37:28,110 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:28,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:28,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1550668567, now seen corresponding path program 1 times [2020-10-14 07:37:28,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:28,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096481007] [2020-10-14 07:37:28,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:28,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:28,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:28,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:28,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:28,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:33,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:33,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 07:37:33,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:33,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 07:37:33,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:33,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:37:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 07:37:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:37:33,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:33,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:33,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:33,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:33,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:33,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:33,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:37:33,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:33,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:33,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:33,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:33,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:33,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:33,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:37:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:33,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:33,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:33,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:33,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:33,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 07:37:33,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:33,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:37:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:37:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:37:33,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:33,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:37:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:33,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:33,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:33,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:33,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:33,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:33,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 07:37:33,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:33,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:33,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:33,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:37:33,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:33,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:33,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 07:37:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:33,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:33,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:33,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:33,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:33,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:33,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 07:37:33,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:33,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:33,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:33,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:37:33,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:33,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 07:37:33,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096481007] [2020-10-14 07:37:33,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:33,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:37:33,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864712386] [2020-10-14 07:37:33,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:37:33,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:33,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:37:33,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:37:33,271 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-14 07:37:33,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:33,392 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-14 07:37:33,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:37:33,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-14 07:37:33,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:33,394 INFO L225 Difference]: With dead ends: 51 [2020-10-14 07:37:33,394 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 07:37:33,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:37:33,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 07:37:33,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-14 07:37:33,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 07:37:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-14 07:37:33,407 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-14 07:37:33,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:33,407 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-14 07:37:33,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:37:33,408 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-14 07:37:33,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 07:37:33,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:33,411 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:37:33,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 07:37:33,412 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:33,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:33,413 INFO L82 PathProgramCache]: Analyzing trace with hash 428974311, now seen corresponding path program 2 times [2020-10-14 07:37:33,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:33,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068033895] [2020-10-14 07:37:33,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:33,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:33,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:33,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:33,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:34,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:38,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:38,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 07:37:38,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:38,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 07:37:38,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:38,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:38,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:37:38,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:37:38,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:37:38,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:38,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:38,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:38,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:38,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:38,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:37:38,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:38,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:38,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:38,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:38,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:38,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:38,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:37:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:38,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:38,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:38,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:38,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:37:38,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:38,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 07:37:38,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:38,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:38,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:38,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:38,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:38,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 07:37:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:38,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:38,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:38,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:37:38,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:38,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 07:37:38,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:38,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:37:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:37:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:37:38,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:38,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:37:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:38,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:38,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:38,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:38,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:37:38,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:38,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:37:38,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:38,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:38,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:38,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:37:38,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:38,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:38,591 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-14 07:37:38,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068033895] [2020-10-14 07:37:38,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:38,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:37:38,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376980206] [2020-10-14 07:37:38,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:37:38,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:38,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:37:38,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:37:38,595 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-14 07:37:38,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:38,709 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-14 07:37:38,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:37:38,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-10-14 07:37:38,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:38,711 INFO L225 Difference]: With dead ends: 55 [2020-10-14 07:37:38,711 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 07:37:38,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:37:38,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 07:37:38,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 07:37:38,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 07:37:38,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-14 07:37:38,718 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2020-10-14 07:37:38,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:38,718 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-14 07:37:38,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:37:38,718 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-14 07:37:38,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 07:37:38,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:38,720 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:37:38,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 07:37:38,720 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:38,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:38,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1810554469, now seen corresponding path program 3 times [2020-10-14 07:37:38,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:38,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340852988] [2020-10-14 07:37:38,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:38,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:38,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:38,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:38,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:39,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:43,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:43,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 07:37:43,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:43,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:37:43,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:43,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:43,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:37:43,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 07:37:43,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:37:43,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:43,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:43,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:43,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:43,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:43,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:43,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:37:43,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:43,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:43,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:43,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:43,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:43,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:43,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:37:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:43,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:43,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:43,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:43,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:43,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:43,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:37:43,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:43,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:43,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:43,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:37:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:43,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:43,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:43,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:43,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:43,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:43,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 07:37:43,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:43,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:43,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:43,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:43,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:43,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:43,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 07:37:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:43,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:43,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:43,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:43,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:43,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:43,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 07:37:43,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:43,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:37:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:43,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 07:37:43,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340852988] [2020-10-14 07:37:43,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:43,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:37:43,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695394049] [2020-10-14 07:37:43,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:37:43,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:43,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:37:43,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:37:43,896 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-14 07:37:43,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:43,971 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-14 07:37:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:37:43,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-14 07:37:43,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:43,973 INFO L225 Difference]: With dead ends: 53 [2020-10-14 07:37:43,973 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 07:37:43,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 07:37:43,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 07:37:43,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-14 07:37:43,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 07:37:43,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-14 07:37:43,980 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 54 [2020-10-14 07:37:43,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:43,980 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-14 07:37:43,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:37:43,980 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-14 07:37:43,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 07:37:43,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:43,982 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:37:43,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 07:37:43,982 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:43,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:43,982 INFO L82 PathProgramCache]: Analyzing trace with hash 591386467, now seen corresponding path program 4 times [2020-10-14 07:37:43,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:43,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916463399] [2020-10-14 07:37:43,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:43,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:43,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:44,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:44,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:44,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:48,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 07:37:48,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:48,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 07:37:48,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:48,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:48,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:37:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 07:37:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:37:49,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:49,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:49,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:49,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:49,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:49,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:49,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:37:49,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:49,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:49,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:49,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:49,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:49,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:49,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:37:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:49,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:49,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:49,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:49,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:49,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:49,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 07:37:49,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:49,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:49,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:49,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:49,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:37:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:49,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:49,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:49,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:49,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:49,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:49,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 07:37:49,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:49,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:49,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:49,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:49,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:49,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:49,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 07:37:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:49,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:49,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:49,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:49,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:49,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:49,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:37:49,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:49,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:49,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:49,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:37:49,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:49,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 07:37:49,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916463399] [2020-10-14 07:37:49,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:49,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:37:49,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138161869] [2020-10-14 07:37:49,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:37:49,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:49,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:37:49,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:37:49,176 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-14 07:37:49,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:49,264 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2020-10-14 07:37:49,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:37:49,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-14 07:37:49,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:49,266 INFO L225 Difference]: With dead ends: 55 [2020-10-14 07:37:49,266 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 07:37:49,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 07:37:49,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 07:37:49,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-14 07:37:49,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 07:37:49,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-14 07:37:49,272 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 56 [2020-10-14 07:37:49,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:49,273 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-14 07:37:49,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:37:49,273 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-14 07:37:49,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 07:37:49,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:49,274 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:37:49,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 07:37:49,274 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:49,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:49,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1497008353, now seen corresponding path program 5 times [2020-10-14 07:37:49,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:49,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578120684] [2020-10-14 07:37:49,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:49,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:49,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:49,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:54,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:54,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 07:37:54,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:37:54,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 07:37:54,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:54,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:54,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:37:54,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:37:54,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:37:54,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:54,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:54,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:54,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:54,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:54,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:54,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:37:54,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:54,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:54,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:54,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:37:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:54,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:54,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:54,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:54,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:54,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:54,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 07:37:54,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:54,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:37:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:54,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:54,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:37:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:54,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:54,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:54,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:54,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:54,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:54,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 07:37:54,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:54,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:37:54,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:54,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:54,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 07:37:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:54,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:54,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:54,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:54,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:54,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:54,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 07:37:54,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:54,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:54,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:54,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:37:54,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:54,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:54,447 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-14 07:37:54,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578120684] [2020-10-14 07:37:54,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:54,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:37:54,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75455407] [2020-10-14 07:37:54,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:37:54,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:54,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:37:54,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:37:54,450 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-10-14 07:37:54,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:54,528 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-10-14 07:37:54,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:37:54,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-14 07:37:54,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:54,530 INFO L225 Difference]: With dead ends: 68 [2020-10-14 07:37:54,530 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 07:37:54,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 07:37:54,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 07:37:54,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-14 07:37:54,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 07:37:54,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-14 07:37:54,536 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-14 07:37:54,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:54,537 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-14 07:37:54,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:37:54,537 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-14 07:37:54,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 07:37:54,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:54,538 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:37:54,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 07:37:54,538 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:54,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:54,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1355149629, now seen corresponding path program 6 times [2020-10-14 07:37:54,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:54,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755294295] [2020-10-14 07:37:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:54,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:54,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:54,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:59,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:59,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 07:37:59,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:37:59,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 07:37:59,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:59,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:59,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:37:59,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:37:59,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:37:59,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:59,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:59,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:59,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:59,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:59,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:59,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:37:59,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:59,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:59,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:59,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:59,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:59,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:59,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 07:37:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:59,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:59,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:59,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:59,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:59,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:59,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 07:37:59,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:59,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:59,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:59,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:59,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:59,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:59,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 07:37:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:59,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:59,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:59,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:59,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 07:37:59,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:59,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:59,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:37:59,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:37:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:37:59,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:59,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 07:37:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:59,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:59,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:59,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:59,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:59,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:59,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:37:59,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:59,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:59,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:59,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:37:59,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:59,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 28 proven. 37 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-14 07:37:59,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755294295] [2020-10-14 07:37:59,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:59,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:37:59,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551878966] [2020-10-14 07:37:59,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:37:59,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:59,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:37:59,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:37:59,679 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 7 states. [2020-10-14 07:37:59,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:59,835 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-10-14 07:37:59,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:37:59,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-10-14 07:37:59,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:59,836 INFO L225 Difference]: With dead ends: 69 [2020-10-14 07:37:59,836 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 07:37:59,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:37:59,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 07:37:59,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-14 07:37:59,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 07:37:59,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-14 07:37:59,843 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-14 07:37:59,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:59,844 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-14 07:37:59,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:37:59,844 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-14 07:37:59,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 07:37:59,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:59,845 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:37:59,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 07:37:59,845 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:59,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:59,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1343834815, now seen corresponding path program 7 times [2020-10-14 07:37:59,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:59,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605670929] [2020-10-14 07:37:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:59,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:59,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:59,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:59,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:04,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 07:38:04,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:04,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 07:38:04,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:04,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:04,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:38:04,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 07:38:04,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:38:04,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:04,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:04,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:04,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:04,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:04,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:38:04,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:04,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:04,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:04,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:04,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:04,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:04,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 07:38:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:04,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:04,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:04,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:04,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 07:38:04,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:04,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:04,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:04,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:04,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:04,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:04,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 07:38:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:04,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:04,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:04,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:04,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 07:38:04,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:04,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:04,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:04,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 07:38:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:04,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:05,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:05,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:05,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 07:38:05,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:05,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:05,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:05,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:05,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:05,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-14 07:38:05,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605670929] [2020-10-14 07:38:05,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:05,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:38:05,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565313452] [2020-10-14 07:38:05,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:38:05,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:05,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:38:05,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:05,035 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-14 07:38:05,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:05,139 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-10-14 07:38:05,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:38:05,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-14 07:38:05,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:05,140 INFO L225 Difference]: With dead ends: 63 [2020-10-14 07:38:05,141 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 07:38:05,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:05,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 07:38:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-14 07:38:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 07:38:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-14 07:38:05,148 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 66 [2020-10-14 07:38:05,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:05,148 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-14 07:38:05,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:38:05,148 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-14 07:38:05,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 07:38:05,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:05,149 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:05,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 07:38:05,150 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:05,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:05,150 INFO L82 PathProgramCache]: Analyzing trace with hash 905336639, now seen corresponding path program 8 times [2020-10-14 07:38:05,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:05,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360796277] [2020-10-14 07:38:05,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:05,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:10,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:10,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 07:38:10,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:10,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 07:38:10,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:10,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:38:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:38:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:10,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:10,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:10,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:10,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:10,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:10,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:10,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:10,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:10,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:10,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:10,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 07:38:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:10,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:10,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:10,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:10,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:10,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:10,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 07:38:10,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:10,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:10,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:10,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 07:38:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:10,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:10,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:10,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:10,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:10,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:10,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 07:38:10,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:10,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:10,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:10,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:10,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:10,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:10,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 07:38:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:10,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:10,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:10,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:10,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:10,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:10,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 07:38:10,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:10,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:10,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:10,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:10,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:10,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:10,352 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-14 07:38:10,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360796277] [2020-10-14 07:38:10,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:10,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:38:10,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311513138] [2020-10-14 07:38:10,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:38:10,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:10,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:38:10,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:38:10,355 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-10-14 07:38:10,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:10,445 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2020-10-14 07:38:10,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:38:10,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 07:38:10,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:10,447 INFO L225 Difference]: With dead ends: 78 [2020-10-14 07:38:10,447 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 07:38:10,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 07:38:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 07:38:10,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-14 07:38:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 07:38:10,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-14 07:38:10,460 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-14 07:38:10,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:10,462 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-14 07:38:10,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:38:10,462 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-14 07:38:10,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 07:38:10,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:10,463 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:10,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 07:38:10,464 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:10,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:10,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1678153055, now seen corresponding path program 9 times [2020-10-14 07:38:10,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:10,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129036809] [2020-10-14 07:38:10,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:10,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:10,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:10,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:10,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:15,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 07:38:15,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:15,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 07:38:15,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:15,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:38:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 07:38:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:38:15,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:15,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:15,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:15,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:15,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:15,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:15,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:15,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:15,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:15,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:15,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:15,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:15,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:15,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:15,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:15,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:15,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 07:38:15,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:15,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:15,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:38:15,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:15,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:38:15,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:15,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 07:38:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:15,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:15,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:15,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:15,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:38:15,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:15,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:15,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:15,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:15,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 07:38:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:15,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:15,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:15,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:15,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 07:38:15,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:15,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:15,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:15,630 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-14 07:38:15,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129036809] [2020-10-14 07:38:15,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:15,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:38:15,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004777262] [2020-10-14 07:38:15,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:38:15,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:15,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:38:15,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:38:15,632 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 8 states. [2020-10-14 07:38:15,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:15,823 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-10-14 07:38:15,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:38:15,823 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-14 07:38:15,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:15,824 INFO L225 Difference]: With dead ends: 79 [2020-10-14 07:38:15,824 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 07:38:15,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:38:15,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 07:38:15,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-14 07:38:15,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 07:38:15,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-14 07:38:15,837 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-14 07:38:15,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:15,837 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-14 07:38:15,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:38:15,837 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-14 07:38:15,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 07:38:15,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:15,840 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:15,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 07:38:15,840 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:15,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:15,840 INFO L82 PathProgramCache]: Analyzing trace with hash -684928609, now seen corresponding path program 10 times [2020-10-14 07:38:15,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:15,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929012892] [2020-10-14 07:38:15,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:15,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:20,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 07:38:20,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:20,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 07:38:20,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:20,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:20,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:38:20,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 07:38:20,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:38:20,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:20,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:20,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:20,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:20,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:20,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:20,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:20,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:20,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:20,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:20,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:20,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:38:20,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:20,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 07:38:20,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:20,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:20,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:20,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:20,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:20,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:20,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 07:38:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:20,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:20,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:38:20,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:20,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 07:38:20,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:20,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:20,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:38:20,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:20,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:38:20,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:20,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 07:38:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:20,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:21,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:21,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:38:21,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:21,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:38:21,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:21,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:38:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:21,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 64 proven. 89 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-14 07:38:21,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929012892] [2020-10-14 07:38:21,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:21,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:38:21,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614825051] [2020-10-14 07:38:21,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:38:21,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:21,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:38:21,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:38:21,022 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 9 states. [2020-10-14 07:38:21,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:21,198 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-10-14 07:38:21,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:38:21,198 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-14 07:38:21,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:21,199 INFO L225 Difference]: With dead ends: 83 [2020-10-14 07:38:21,199 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 07:38:21,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:38:21,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 07:38:21,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-14 07:38:21,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 07:38:21,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-14 07:38:21,209 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 76 [2020-10-14 07:38:21,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:21,209 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-14 07:38:21,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:38:21,209 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-14 07:38:21,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 07:38:21,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:21,210 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:21,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 07:38:21,210 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:21,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:21,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1276722659, now seen corresponding path program 11 times [2020-10-14 07:38:21,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:21,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005951220] [2020-10-14 07:38:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:21,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:21,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:21,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:21,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:26,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:26,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 07:38:26,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:26,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 07:38:26,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:26,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:26,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:38:26,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 07:38:26,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:38:26,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:26,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:26,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:26,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:26,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:26,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:26,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:26,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:26,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:26,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:26,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:26,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:26,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:26,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:26,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:26,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:26,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:26,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:26,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:26,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 07:38:26,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:26,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:26,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:26,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:26,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:26,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:26,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 07:38:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:26,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:26,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:26,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:26,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:26,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:26,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:38:26,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:26,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:26,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:26,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:26,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:26,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:26,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 07:38:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:26,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:26,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:26,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:26,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:26,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:26,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 07:38:26,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:26,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:26,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:26,424 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-14 07:38:26,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005951220] [2020-10-14 07:38:26,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:26,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:38:26,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991972577] [2020-10-14 07:38:26,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:38:26,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:26,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:38:26,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:38:26,426 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-14 07:38:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:26,524 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-14 07:38:26,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:38:26,524 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-14 07:38:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:26,525 INFO L225 Difference]: With dead ends: 75 [2020-10-14 07:38:26,525 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 07:38:26,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:38:26,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 07:38:26,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-14 07:38:26,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 07:38:26,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-14 07:38:26,532 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 82 [2020-10-14 07:38:26,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:26,532 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-14 07:38:26,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:38:26,533 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-14 07:38:26,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 07:38:26,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:26,534 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:26,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 07:38:26,534 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:26,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:26,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1587774181, now seen corresponding path program 12 times [2020-10-14 07:38:26,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:26,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029562886] [2020-10-14 07:38:26,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:26,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:26,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:26,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:26,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:31,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 07:38:31,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:31,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 07:38:31,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:31,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:31,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:38:31,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 07:38:31,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:38:31,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:31,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:31,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:31,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:31,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:31,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:31,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:31,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:31,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:31,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:31,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:31,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:31,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:31,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:31,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:31,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 07:38:31,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:31,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:31,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:31,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:31,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:31,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:31,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 07:38:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:31,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:31,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:31,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:31,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 07:38:31,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:31,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:31,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:31,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:31,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:31,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:31,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 07:38:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:31,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:31,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:31,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:31,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 07:38:31,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:31,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:31,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-14 07:38:31,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029562886] [2020-10-14 07:38:31,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:31,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:38:31,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845421348] [2020-10-14 07:38:31,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:38:31,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:31,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:38:31,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:38:31,848 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 9 states. [2020-10-14 07:38:31,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:31,979 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-10-14 07:38:31,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:38:31,980 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-14 07:38:31,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:31,981 INFO L225 Difference]: With dead ends: 77 [2020-10-14 07:38:31,981 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 07:38:31,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:38:31,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 07:38:31,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-14 07:38:31,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 07:38:31,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-14 07:38:31,987 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 84 [2020-10-14 07:38:31,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:31,988 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-14 07:38:31,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:38:31,988 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-14 07:38:31,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 07:38:31,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:31,989 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:31,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 07:38:31,989 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:31,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:31,990 INFO L82 PathProgramCache]: Analyzing trace with hash 139423897, now seen corresponding path program 13 times [2020-10-14 07:38:31,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:31,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982172768] [2020-10-14 07:38:31,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:32,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:32,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:32,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:32,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:37,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:37,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 07:38:37,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:37,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 07:38:37,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:37,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:38:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:38:37,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:37,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:37,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:37,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:37,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:37,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:37,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:37,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:37,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:37,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:37,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:37,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:37,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:37,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:37,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:37,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:37,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:37,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:37,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:37,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 07:38:37,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:37,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:37,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:37,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:37,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:37,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:37,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 07:38:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:37,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:37,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:37,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:37,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:37,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 07:38:37,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:37,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:37,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:37,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 07:38:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:37,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:37,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:37,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:37,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:37,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:37,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 07:38:37,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:37,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:37,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:37,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:37,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:37,263 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-14 07:38:37,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982172768] [2020-10-14 07:38:37,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:37,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:38:37,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996032827] [2020-10-14 07:38:37,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:38:37,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:37,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:38:37,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:37,266 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-10-14 07:38:37,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:37,388 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-14 07:38:37,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:38:37,389 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-14 07:38:37,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:37,390 INFO L225 Difference]: With dead ends: 96 [2020-10-14 07:38:37,390 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 07:38:37,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:37,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 07:38:37,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-14 07:38:37,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 07:38:37,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-14 07:38:37,407 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 86 [2020-10-14 07:38:37,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:37,408 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-14 07:38:37,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:38:37,410 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-14 07:38:37,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 07:38:37,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:37,412 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:37,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 07:38:37,412 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:37,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:37,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1947021179, now seen corresponding path program 14 times [2020-10-14 07:38:37,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:37,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686404541] [2020-10-14 07:38:37,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:37,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:37,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:37,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:37,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:42,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:42,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 07:38:42,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:42,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 07:38:42,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:42,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:38:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 07:38:42,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:38:42,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:42,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:42,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:42,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:42,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:42,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:42,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:42,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:42,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:42,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:42,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:42,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:42,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:42,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:38:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:42,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:42,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:42,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:42,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:42,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:42,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 07:38:42,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:42,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:42,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:42,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:42,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:42,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:42,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 07:38:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:42,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:42,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:42,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:42,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:42,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 07:38:42,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:42,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:42,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:38:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:38:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 07:38:42,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 07:38:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:42,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:42,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:42,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:42,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:42,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:42,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 07:38:42,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:42,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:42,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:42,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:42,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:42,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:42,737 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 88 proven. 124 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-10-14 07:38:42,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686404541] [2020-10-14 07:38:42,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:42,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:38:42,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717842446] [2020-10-14 07:38:42,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:38:42,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:42,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:38:42,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:38:42,739 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 10 states. [2020-10-14 07:38:42,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:42,966 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2020-10-14 07:38:42,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:38:42,966 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-14 07:38:42,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:42,968 INFO L225 Difference]: With dead ends: 97 [2020-10-14 07:38:42,968 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 07:38:42,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:38:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 07:38:42,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-14 07:38:42,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 07:38:42,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-14 07:38:42,978 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 88 [2020-10-14 07:38:42,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:42,979 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-14 07:38:42,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:38:42,979 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-14 07:38:42,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 07:38:42,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:42,981 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:42,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 07:38:42,982 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:42,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:42,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1856932089, now seen corresponding path program 15 times [2020-10-14 07:38:42,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:42,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730463350] [2020-10-14 07:38:42,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:43,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:43,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:43,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:43,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:48,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:48,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 07:38:48,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:48,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 07:38:48,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:48,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:48,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:38:48,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 07:38:48,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:38:48,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:48,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:48,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:48,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:48,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:48,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:48,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:38:48,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:48,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:48,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:48,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:38:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:48,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:48,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:48,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:48,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:38:48,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:48,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 07:38:48,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:48,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:48,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:48,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:48,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:48,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:48,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 07:38:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:48,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:48,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:48,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:48,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:38:48,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:48,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 07:38:48,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:48,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:48,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:48,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 07:38:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:48,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:48,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:48,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:48,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:38:48,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:48,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 07:38:48,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:48,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:38:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:48,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:48,246 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2020-10-14 07:38:48,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730463350] [2020-10-14 07:38:48,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:48,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:38:48,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316449937] [2020-10-14 07:38:48,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:38:48,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:48,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:38:48,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:38:48,249 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 10 states. [2020-10-14 07:38:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:48,365 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2020-10-14 07:38:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:38:48,365 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-14 07:38:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:48,367 INFO L225 Difference]: With dead ends: 85 [2020-10-14 07:38:48,367 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 07:38:48,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:38:48,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 07:38:48,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-14 07:38:48,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 07:38:48,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-14 07:38:48,373 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 94 [2020-10-14 07:38:48,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:48,373 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-14 07:38:48,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:38:48,374 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-14 07:38:48,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 07:38:48,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:48,375 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:48,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 07:38:48,375 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:48,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:48,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1882123511, now seen corresponding path program 16 times [2020-10-14 07:38:48,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:48,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917300266] [2020-10-14 07:38:48,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:48,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:48,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:48,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:48,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:53,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:53,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 07:38:53,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:53,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 07:38:53,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:53,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:53,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:38:53,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:53,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:38:53,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:53,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:53,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:53,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:53,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:53,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:53,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:38:53,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:53,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:53,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:53,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:53,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:53,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:53,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:38:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:53,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:53,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:53,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:53,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:38:53,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:53,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 07:38:53,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:53,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:53,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:53,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:38:53,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:53,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:53,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 07:38:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:53,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:53,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:53,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:53,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:38:53,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:53,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 07:38:53,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:53,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:53,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:53,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:38:53,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:53,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:53,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 07:38:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:53,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:53,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:53,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:53,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:38:53,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:53,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 07:38:53,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:53,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:53,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:53,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:38:53,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:53,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-14 07:38:53,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917300266] [2020-10-14 07:38:53,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:53,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:38:53,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041611975] [2020-10-14 07:38:53,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:38:53,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:53,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:38:53,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:38:53,591 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 8 states. [2020-10-14 07:38:53,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:53,699 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2020-10-14 07:38:53,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:38:53,700 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-14 07:38:53,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:53,701 INFO L225 Difference]: With dead ends: 106 [2020-10-14 07:38:53,701 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 07:38:53,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:38:53,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 07:38:53,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-14 07:38:53,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 07:38:53,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-14 07:38:53,711 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 96 [2020-10-14 07:38:53,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:53,712 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-14 07:38:53,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:38:53,712 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-14 07:38:53,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 07:38:53,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:53,713 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:53,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 07:38:53,714 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:53,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:53,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1111292249, now seen corresponding path program 17 times [2020-10-14 07:38:53,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:53,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878965119] [2020-10-14 07:38:53,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:53,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:53,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:53,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:54,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:58,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:58,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 07:38:58,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:58,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 07:38:58,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:58,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:58,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:38:58,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 07:38:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:38:58,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:58,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:58,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:58,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:58,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:58,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:58,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:58,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:38:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:58,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:58,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:58,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:58,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:38:58,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:58,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 07:38:58,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:58,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:58,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:58,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:58,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:58,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:58,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 07:38:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:58,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:58,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:58,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:38:58,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:58,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 07:38:58,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:58,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:58,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:58,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 07:38:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:58,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:58,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:59,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:59,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:38:59,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:59,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 07:38:59,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:59,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:59,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:59,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:38:59,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:59,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:59,012 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2020-10-14 07:38:59,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878965119] [2020-10-14 07:38:59,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:59,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:38:59,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463224843] [2020-10-14 07:38:59,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:38:59,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:59,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:38:59,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:38:59,014 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2020-10-14 07:38:59,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:59,142 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-10-14 07:38:59,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:38:59,143 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-14 07:38:59,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:59,144 INFO L225 Difference]: With dead ends: 89 [2020-10-14 07:38:59,144 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 07:38:59,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:38:59,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 07:38:59,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-14 07:38:59,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 07:38:59,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-14 07:38:59,150 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-14 07:38:59,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:59,151 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-14 07:38:59,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:38:59,151 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-14 07:38:59,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 07:38:59,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:59,152 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:59,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 07:38:59,153 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:59,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:59,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1713191593, now seen corresponding path program 18 times [2020-10-14 07:38:59,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:59,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243817186] [2020-10-14 07:38:59,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:59,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:59,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:59,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:59,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:04,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:04,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 07:39:04,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:04,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 07:39:04,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:04,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:04,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:39:04,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 07:39:04,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:39:04,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:04,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:04,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:04,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:04,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:04,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:04,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:04,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:04,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:04,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:04,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:04,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:04,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:04,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:39:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:04,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:04,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:04,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:04,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 07:39:04,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:04,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:04,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:39:04,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:39:04,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:39:04,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:04,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 07:39:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:04,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:04,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:04,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:04,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:04,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:04,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 07:39:04,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:04,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:39:04,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:04,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:04,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 07:39:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:04,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:04,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:04,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:04,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:04,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:04,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 07:39:04,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:04,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:39:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:04,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-14 07:39:04,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243817186] [2020-10-14 07:39:04,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:04,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:39:04,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599175307] [2020-10-14 07:39:04,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:39:04,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:04,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:39:04,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:39:04,443 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-14 07:39:04,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:04,662 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2020-10-14 07:39:04,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:39:04,665 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 100 [2020-10-14 07:39:04,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:04,666 INFO L225 Difference]: With dead ends: 111 [2020-10-14 07:39:04,666 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 07:39:04,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-14 07:39:04,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 07:39:04,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-14 07:39:04,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 07:39:04,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-14 07:39:04,672 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 100 [2020-10-14 07:39:04,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:04,672 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-14 07:39:04,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:39:04,672 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-14 07:39:04,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 07:39:04,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:04,673 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:39:04,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 07:39:04,674 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:04,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:04,674 INFO L82 PathProgramCache]: Analyzing trace with hash -577108011, now seen corresponding path program 19 times [2020-10-14 07:39:04,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:04,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147564045] [2020-10-14 07:39:04,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:04,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:04,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:04,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:04,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:09,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:09,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 07:39:09,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:09,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 07:39:09,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:09,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:09,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:39:09,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:39:09,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:39:09,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:09,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:09,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:09,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:09,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:09,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:09,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:09,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:09,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:09,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:09,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:39:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:09,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:09,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:09,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:09,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:09,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:09,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 07:39:09,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:09,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:09,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:09,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:09,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:09,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:09,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 07:39:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:09,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:09,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:09,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:09,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:09,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:09,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 07:39:09,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:09,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:09,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:09,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 07:39:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:09,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:09,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:09,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:09,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:09,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:09,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 07:39:09,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:09,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:09,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:09,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:09,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:09,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-14 07:39:09,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147564045] [2020-10-14 07:39:09,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:09,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:39:09,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729422578] [2020-10-14 07:39:09,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:39:09,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:09,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:39:09,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:39:09,975 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 9 states. [2020-10-14 07:39:10,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:10,070 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-14 07:39:10,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:39:10,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-14 07:39:10,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:10,072 INFO L225 Difference]: With dead ends: 116 [2020-10-14 07:39:10,072 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 07:39:10,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:39:10,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 07:39:10,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-14 07:39:10,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 07:39:10,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-14 07:39:10,078 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 106 [2020-10-14 07:39:10,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:10,078 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-14 07:39:10,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:39:10,078 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-14 07:39:10,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 07:39:10,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:10,079 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:39:10,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 07:39:10,080 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:10,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:10,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1374322249, now seen corresponding path program 20 times [2020-10-14 07:39:10,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:10,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947883349] [2020-10-14 07:39:10,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:10,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:10,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:10,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:10,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:15,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:15,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 07:39:15,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:15,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:39:15,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:15,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:39:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 07:39:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:39:15,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:15,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:15,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:15,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:15,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:15,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:15,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:15,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:15,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:15,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:15,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:15,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:15,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:15,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:39:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:15,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:15,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:15,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:15,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:15,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:15,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 07:39:15,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:15,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:15,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:15,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 07:39:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:15,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:15,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:15,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:15,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:15,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 07:39:15,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:15,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:39:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:39:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:39:15,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:15,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 07:39:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:15,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:15,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:15,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:15,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:15,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:15,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 07:39:15,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:15,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:15,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:15,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:15,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:15,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 148 proven. 212 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2020-10-14 07:39:15,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947883349] [2020-10-14 07:39:15,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:15,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:39:15,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786453824] [2020-10-14 07:39:15,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:39:15,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:15,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:39:15,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:39:15,363 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2020-10-14 07:39:15,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:15,595 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-10-14 07:39:15,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:39:15,595 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-14 07:39:15,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:15,596 INFO L225 Difference]: With dead ends: 117 [2020-10-14 07:39:15,596 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 07:39:15,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-14 07:39:15,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 07:39:15,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-14 07:39:15,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 07:39:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-14 07:39:15,602 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-14 07:39:15,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:15,603 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-14 07:39:15,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:39:15,603 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-14 07:39:15,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 07:39:15,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:15,604 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 8, 8, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:39:15,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 07:39:15,604 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:15,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:15,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1129888821, now seen corresponding path program 21 times [2020-10-14 07:39:15,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:15,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884347226] [2020-10-14 07:39:15,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:15,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:15,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:15,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:15,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:20,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:20,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 07:39:20,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:20,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 07:39:20,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:20,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:39:20,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 07:39:20,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:39:20,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:20,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:20,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:20,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:20,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:20,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:20,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:20,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:20,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:20,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:20,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:20,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:20,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:20,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:39:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:20,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:20,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:20,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:20,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:39:20,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:20,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 07:39:20,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:20,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:20,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:20,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:20,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:20,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:20,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 07:39:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:20,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:20,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:20,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:39:20,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:20,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 07:39:20,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:20,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:20,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:39:20,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:39:20,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:39:20,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:20,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 07:39:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:20,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:20,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:20,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:20,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:39:20,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:20,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 07:39:20,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:20,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:20,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:20,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:39:20,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:20,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 184 proven. 265 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2020-10-14 07:39:20,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884347226] [2020-10-14 07:39:20,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:20,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:39:20,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158814634] [2020-10-14 07:39:20,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:39:20,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:20,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:39:20,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:39:20,926 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-14 07:39:21,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:21,205 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-14 07:39:21,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:39:21,206 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-10-14 07:39:21,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:21,207 INFO L225 Difference]: With dead ends: 120 [2020-10-14 07:39:21,208 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 07:39:21,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-14 07:39:21,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 07:39:21,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-14 07:39:21,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 07:39:21,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-14 07:39:21,214 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 114 [2020-10-14 07:39:21,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:21,214 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-14 07:39:21,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:39:21,215 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-14 07:39:21,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 07:39:21,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:21,216 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 8, 8, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:39:21,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 07:39:21,216 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:21,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:21,217 INFO L82 PathProgramCache]: Analyzing trace with hash 710139955, now seen corresponding path program 22 times [2020-10-14 07:39:21,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:21,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531378872] [2020-10-14 07:39:21,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:21,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:21,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:26,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:26,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 07:39:26,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:26,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-14 07:39:26,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:26,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:26,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:39:26,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 07:39:26,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:39:26,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:26,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:26,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:26,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:26,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:26,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:26,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:26,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:26,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:26,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:26,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:39:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:26,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:26,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:26,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:26,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:26,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:39:26,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:26,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:26,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:26,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:26,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:26,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:26,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 07:39:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:26,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:26,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:26,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:26,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:26,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:39:26,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:26,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:26,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:26,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:26,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:26,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:26,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 07:39:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:26,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:26,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:26,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:26,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:26,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 07:39:26,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:26,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:26,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2020-10-14 07:39:26,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531378872] [2020-10-14 07:39:26,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:26,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:39:26,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424734223] [2020-10-14 07:39:26,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:39:26,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:26,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:39:26,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:39:26,478 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-14 07:39:26,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:26,613 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2020-10-14 07:39:26,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:39:26,614 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-14 07:39:26,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:26,615 INFO L225 Difference]: With dead ends: 104 [2020-10-14 07:39:26,615 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 07:39:26,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:39:26,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 07:39:26,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-14 07:39:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 07:39:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-14 07:39:26,621 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 120 [2020-10-14 07:39:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:26,621 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-14 07:39:26,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:39:26,621 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-14 07:39:26,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 07:39:26,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:26,623 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:39:26,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 07:39:26,623 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:26,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:26,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1919537743, now seen corresponding path program 23 times [2020-10-14 07:39:26,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:26,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740791482] [2020-10-14 07:39:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:26,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:27,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:35,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 07:39:35,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:35,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8588 [2020-10-14 07:39:35,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:35,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:39:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:39:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:39:35,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:35,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:35,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:35,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:35,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:35,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:35,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:35,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:35,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:35,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:39:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:35,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:35,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:35,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:35,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:39:35,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:35,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:35,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:35,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 07:39:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:35,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:35,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:35,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:35,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 07:39:35,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:35,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:35,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:35,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:35,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 07:39:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:35,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:35,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:35,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:35,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 07:39:35,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:35,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:35,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:35,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:35,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:35,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2020-10-14 07:39:35,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740791482] [2020-10-14 07:39:35,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:35,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:39:35,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524978100] [2020-10-14 07:39:35,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:39:35,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:35,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:39:35,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:39:35,351 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 10 states. [2020-10-14 07:39:35,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:35,458 INFO L93 Difference]: Finished difference Result 130 states and 138 transitions. [2020-10-14 07:39:35,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:39:35,458 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 122 [2020-10-14 07:39:35,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:35,459 INFO L225 Difference]: With dead ends: 130 [2020-10-14 07:39:35,460 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 07:39:35,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:39:35,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 07:39:35,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-14 07:39:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 07:39:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-14 07:39:35,466 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 122 [2020-10-14 07:39:35,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:35,467 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-14 07:39:35,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:39:35,467 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-14 07:39:35,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 07:39:35,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:35,468 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:39:35,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 07:39:35,469 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:35,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:35,469 INFO L82 PathProgramCache]: Analyzing trace with hash -2013944941, now seen corresponding path program 24 times [2020-10-14 07:39:35,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:35,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383552031] [2020-10-14 07:39:35,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:35,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:36,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:44,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:44,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 07:39:44,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:44,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8624 [2020-10-14 07:39:44,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:44,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:44,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:39:44,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:39:44,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:39:44,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:44,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:44,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:44,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:44,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:44,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:44,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:44,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:44,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:44,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:44,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:44,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:44,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:39:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:44,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:44,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:44,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:44,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:44,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 07:39:44,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:44,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:44,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:44,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:44,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:44,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:44,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 07:39:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:44,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:44,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:44,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:44,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:44,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 07:39:44,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:44,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:44,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:44,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 07:39:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:44,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:44,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:44,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:44,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:44,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 07:39:44,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:44,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:44,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:44,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:44,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:44,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2020-10-14 07:39:44,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383552031] [2020-10-14 07:39:44,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:44,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:39:44,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872929682] [2020-10-14 07:39:44,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:39:44,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:44,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:39:44,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:39:44,258 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 11 states. [2020-10-14 07:39:44,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:44,381 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2020-10-14 07:39:44,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:39:44,382 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 124 [2020-10-14 07:39:44,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:44,382 INFO L225 Difference]: With dead ends: 132 [2020-10-14 07:39:44,383 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 07:39:44,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:39:44,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 07:39:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-14 07:39:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 07:39:44,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-14 07:39:44,395 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-14 07:39:44,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:44,395 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-14 07:39:44,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:39:44,396 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-14 07:39:44,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 07:39:44,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:44,397 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:39:44,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 07:39:44,397 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:44,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:44,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1750018293, now seen corresponding path program 25 times [2020-10-14 07:39:44,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:44,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576555209] [2020-10-14 07:39:44,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:44,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:45,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:53,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:53,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 07:39:53,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:53,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9516 [2020-10-14 07:39:53,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:53,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:53,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:39:53,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:39:53,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:39:53,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:54,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:54,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:54,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:54,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:54,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:54,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:54,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:54,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:54,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:39:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:54,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:54,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:54,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:54,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:54,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 07:39:54,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:54,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:54,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:54,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:54,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:54,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:54,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 07:39:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:54,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:54,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:54,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:54,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:54,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 07:39:54,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:54,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:54,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:54,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 07:39:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:54,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:54,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:54,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:54,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:54,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 07:39:54,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:54,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:54,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:54,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:54,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:54,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2020-10-14 07:39:54,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576555209] [2020-10-14 07:39:54,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:54,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:39:54,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217767359] [2020-10-14 07:39:54,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:39:54,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:54,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:39:54,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:39:54,107 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 12 states. [2020-10-14 07:39:54,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:54,226 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-10-14 07:39:54,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:39:54,227 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-10-14 07:39:54,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:54,228 INFO L225 Difference]: With dead ends: 134 [2020-10-14 07:39:54,228 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 07:39:54,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:39:54,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 07:39:54,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-14 07:39:54,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 07:39:54,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-14 07:39:54,236 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-14 07:39:54,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:54,236 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-14 07:39:54,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:39:54,236 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-14 07:39:54,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 07:39:54,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:54,238 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:39:54,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 07:39:54,238 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:54,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:54,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1738744361, now seen corresponding path program 26 times [2020-10-14 07:39:54,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:54,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733148245] [2020-10-14 07:39:54,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:54,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:55,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:03,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:03,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 07:40:03,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:03,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9544 [2020-10-14 07:40:03,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:03,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:40:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:40:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:40:03,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:03,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:03,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:03,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:03,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:03,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:03,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:03,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:03,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:03,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:03,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:40:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:03,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:03,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:03,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:40:03,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:03,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:40:03,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:03,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:03,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:03,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:40:03,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:03,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:03,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 07:40:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:03,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:03,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:03,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:40:03,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:03,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:40:03,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:03,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:40:03,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:03,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:03,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 07:40:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:03,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:03,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:03,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:40:03,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:03,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 07:40:03,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:03,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:03,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:03,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:40:03,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:03,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2020-10-14 07:40:03,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733148245] [2020-10-14 07:40:03,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:03,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:40:03,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635895895] [2020-10-14 07:40:03,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:40:03,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:03,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:40:03,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:40:03,961 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 13 states. [2020-10-14 07:40:04,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:04,080 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2020-10-14 07:40:04,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:40:04,081 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 128 [2020-10-14 07:40:04,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:04,082 INFO L225 Difference]: With dead ends: 135 [2020-10-14 07:40:04,082 INFO L226 Difference]: Without dead ends: 81 [2020-10-14 07:40:04,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:40:04,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-14 07:40:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-14 07:40:04,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 07:40:04,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-14 07:40:04,088 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2020-10-14 07:40:04,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:04,088 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-14 07:40:04,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:40:04,089 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-14 07:40:04,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 07:40:04,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:04,090 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:40:04,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 07:40:04,090 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:04,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:04,090 INFO L82 PathProgramCache]: Analyzing trace with hash -70196679, now seen corresponding path program 27 times [2020-10-14 07:40:04,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:04,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378390896] [2020-10-14 07:40:04,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:05,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:13,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:13,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 07:40:13,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:13,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8823 [2020-10-14 07:40:13,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:13,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 92 [2020-10-14 07:40:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 07:40:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 07:40:13,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0