/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/eca-rers2012/Problem15_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:24:01,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:24:01,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:24:01,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:24:01,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:24:01,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:24:01,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:24:01,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:24:01,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:24:01,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:24:01,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:24:01,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:24:01,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:24:01,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:24:01,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:24:01,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:24:01,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:24:01,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:24:01,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:24:01,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:24:01,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:24:01,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:24:01,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:24:01,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:24:01,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:24:01,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:24:01,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:24:01,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:24:01,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:24:01,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:24:01,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:24:01,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:24:01,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:24:01,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:24:01,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:24:01,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:24:01,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:24:01,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:24:01,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:24:01,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:24:01,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:24:01,528 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 03:24:01,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:24:01,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:24:01,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:24:01,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:24:01,552 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:24:01,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:24:01,552 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:24:01,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:24:01,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:24:01,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:24:01,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:24:01,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:24:01,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:24:01,553 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:24:01,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:24:01,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:24:01,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:24:01,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:24:01,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:24:01,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:24:01,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:24:01,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:24:01,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:24:01,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:24:01,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:24:01,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:24:01,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:24:01,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:24:01,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:24:01,557 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 03:24:01,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:24:01,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:24:01,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:24:01,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:24:01,897 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:24:01,897 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label07.c [2020-10-14 03:24:01,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/100635f74/584f04d6e2f04c4197aaaba10dfd96ca/FLAGa5d03feef [2020-10-14 03:24:02,591 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:24:02,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label07.c [2020-10-14 03:24:02,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/100635f74/584f04d6e2f04c4197aaaba10dfd96ca/FLAGa5d03feef [2020-10-14 03:24:02,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/100635f74/584f04d6e2f04c4197aaaba10dfd96ca [2020-10-14 03:24:02,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:24:02,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:24:02,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:24:02,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:24:02,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:24:02,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:24:02" (1/1) ... [2020-10-14 03:24:02,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9c66bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:02, skipping insertion in model container [2020-10-14 03:24:02,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:24:02" (1/1) ... [2020-10-14 03:24:02,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:24:02,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:24:03,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:24:03,675 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:24:03,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:24:03,993 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:24:03,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:03 WrapperNode [2020-10-14 03:24:03,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:24:03,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:24:03,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:24:03,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:24:04,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:03" (1/1) ... [2020-10-14 03:24:04,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:03" (1/1) ... [2020-10-14 03:24:04,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:03" (1/1) ... [2020-10-14 03:24:04,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:03" (1/1) ... [2020-10-14 03:24:04,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:03" (1/1) ... [2020-10-14 03:24:04,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:03" (1/1) ... [2020-10-14 03:24:04,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:03" (1/1) ... [2020-10-14 03:24:04,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:24:04,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:24:04,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:24:04,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:24:04,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:03" (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 03:24:04,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:24:04,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:24:04,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:24:04,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:24:04,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:24:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:24:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:24:04,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:24:04,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:24:04,283 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:24:04,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:24:04,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:24:04,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:24:10,877 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:24:10,878 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:24:10,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:24:10 BoogieIcfgContainer [2020-10-14 03:24:10,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:24:10,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:24:10,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:24:10,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:24:10,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:24:02" (1/3) ... [2020-10-14 03:24:10,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bde0ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:24:10, skipping insertion in model container [2020-10-14 03:24:10,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:03" (2/3) ... [2020-10-14 03:24:10,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bde0ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:24:10, skipping insertion in model container [2020-10-14 03:24:10,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:24:10" (3/3) ... [2020-10-14 03:24:10,896 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label07.c [2020-10-14 03:24:10,908 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:24:10,916 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:24:10,931 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:24:10,962 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:24:10,962 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:24:10,963 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:24:10,963 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:24:10,963 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:24:10,963 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:24:10,963 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:24:10,963 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:24:10,993 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:24:11,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 03:24:11,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:11,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:11,003 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:11,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:11,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1402015208, now seen corresponding path program 1 times [2020-10-14 03:24:11,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:11,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620278576] [2020-10-14 03:24:11,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:11,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:11,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:11,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 03:24:11,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:11,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-14 03:24:11,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:11,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:11,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:24:11,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:24:11,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 03:24:11,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:24:11,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:11,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:11,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:11,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:11,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:11,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:24:11,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:11,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:24:11,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:11,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:11,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620278576] [2020-10-14 03:24:11,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:24:11,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:24:11,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244554518] [2020-10-14 03:24:11,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:24:11,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:11,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:24:11,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:24:11,670 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:24:19,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:19,802 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-14 03:24:19,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:19,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-14 03:24:19,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:19,826 INFO L225 Difference]: With dead ends: 1224 [2020-10-14 03:24:19,827 INFO L226 Difference]: Without dead ends: 708 [2020-10-14 03:24:19,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 03:24:19,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-14 03:24:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-14 03:24:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-14 03:24:19,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-14 03:24:19,936 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 16 [2020-10-14 03:24:19,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:19,936 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-14 03:24:19,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:24:19,937 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-14 03:24:19,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 03:24:19,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:19,941 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:24:19,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:24:19,942 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:19,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:19,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1747232409, now seen corresponding path program 1 times [2020-10-14 03:24:19,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:19,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051402654] [2020-10-14 03:24:19,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:20,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:20,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:20,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:21,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:21,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:24:21,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:24:21,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1191 [2020-10-14 03:24:21,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:21,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:21,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:21,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:24:21,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 03:24:21,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:21,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:21,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:21,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:21,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:21,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:21,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:24:21,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:21,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:21,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:21,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:21,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:21,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:21,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:21,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:21,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:24:21,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:21,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 03:24:21,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:21,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:21,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:21,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:21,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:24:21,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:21,501 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:21,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051402654] [2020-10-14 03:24:21,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:21,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:24:21,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132265753] [2020-10-14 03:24:21,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:24:21,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:21,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:24:21,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:24:21,507 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 6 states. [2020-10-14 03:24:31,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:31,051 INFO L93 Difference]: Finished difference Result 2017 states and 3285 transitions. [2020-10-14 03:24:31,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:24:31,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-14 03:24:31,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:31,065 INFO L225 Difference]: With dead ends: 2017 [2020-10-14 03:24:31,065 INFO L226 Difference]: Without dead ends: 1329 [2020-10-14 03:24:31,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:24:31,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2020-10-14 03:24:31,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1325. [2020-10-14 03:24:31,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1325 states. [2020-10-14 03:24:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1889 transitions. [2020-10-14 03:24:31,160 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1889 transitions. Word has length 86 [2020-10-14 03:24:31,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:31,161 INFO L479 AbstractCegarLoop]: Abstraction has 1325 states and 1889 transitions. [2020-10-14 03:24:31,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:24:31,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1889 transitions. [2020-10-14 03:24:31,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 03:24:31,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:31,175 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:24:31,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:24:31,176 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:31,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:31,177 INFO L82 PathProgramCache]: Analyzing trace with hash -748739898, now seen corresponding path program 1 times [2020-10-14 03:24:31,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:31,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629885998] [2020-10-14 03:24:31,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:31,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:31,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:32,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:32,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:32,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 03:24:32,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:24:32,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1422 [2020-10-14 03:24:32,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:32,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 03:24:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 03:24:32,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:32,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:32,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:32,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:32,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:32,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:32,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:24:32,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:32,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:32,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:32,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:32,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:32,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:32,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:24:32,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:32,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 03:24:32,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:32,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:32,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:32,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:32,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 03:24:32,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:33,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629885998] [2020-10-14 03:24:33,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:33,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:24:33,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102293288] [2020-10-14 03:24:33,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:24:33,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:33,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:24:33,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:33,091 INFO L87 Difference]: Start difference. First operand 1325 states and 1889 transitions. Second operand 5 states. [2020-10-14 03:24:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:46,222 INFO L93 Difference]: Finished difference Result 3271 states and 4905 transitions. [2020-10-14 03:24:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:46,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-14 03:24:46,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:46,238 INFO L225 Difference]: With dead ends: 3271 [2020-10-14 03:24:46,238 INFO L226 Difference]: Without dead ends: 2261 [2020-10-14 03:24:46,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:24:46,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2020-10-14 03:24:46,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2261. [2020-10-14 03:24:46,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2261 states. [2020-10-14 03:24:46,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 3246 transitions. [2020-10-14 03:24:46,316 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 3246 transitions. Word has length 139 [2020-10-14 03:24:46,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:46,317 INFO L479 AbstractCegarLoop]: Abstraction has 2261 states and 3246 transitions. [2020-10-14 03:24:46,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:46,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 3246 transitions. [2020-10-14 03:24:46,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 03:24:46,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:46,320 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:24:46,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:24:46,320 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:46,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:46,321 INFO L82 PathProgramCache]: Analyzing trace with hash 85514773, now seen corresponding path program 1 times [2020-10-14 03:24:46,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:46,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553975381] [2020-10-14 03:24:46,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:46,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:46,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:47,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:47,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:24:47,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:24:47,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1439 [2020-10-14 03:24:47,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:47,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 03:24:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 03:24:47,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:47,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:47,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:47,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:47,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:47,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:47,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:24:47,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:47,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:47,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:47,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:47,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:47,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:47,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:47,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:48,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:48,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:24:48,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:48,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 03:24:48,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:48,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:48,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 03:24:48,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:48,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:48,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553975381] [2020-10-14 03:24:48,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:48,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:24:48,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737278730] [2020-10-14 03:24:48,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:24:48,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:48,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:24:48,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:48,240 INFO L87 Difference]: Start difference. First operand 2261 states and 3246 transitions. Second operand 5 states. [2020-10-14 03:24:59,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:59,765 INFO L93 Difference]: Finished difference Result 6091 states and 9079 transitions. [2020-10-14 03:24:59,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:59,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-14 03:24:59,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:59,794 INFO L225 Difference]: With dead ends: 6091 [2020-10-14 03:24:59,794 INFO L226 Difference]: Without dead ends: 4145 [2020-10-14 03:24:59,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:24:59,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2020-10-14 03:24:59,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 4136. [2020-10-14 03:24:59,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4136 states. [2020-10-14 03:24:59,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 5881 transitions. [2020-10-14 03:24:59,944 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 5881 transitions. Word has length 159 [2020-10-14 03:24:59,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:59,945 INFO L479 AbstractCegarLoop]: Abstraction has 4136 states and 5881 transitions. [2020-10-14 03:24:59,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:59,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 5881 transitions. [2020-10-14 03:24:59,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 03:24:59,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:59,952 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:24:59,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:24:59,952 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:59,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:59,953 INFO L82 PathProgramCache]: Analyzing trace with hash 405485859, now seen corresponding path program 1 times [2020-10-14 03:24:59,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:59,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288109558] [2020-10-14 03:24:59,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:00,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:00,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:01,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:01,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:03,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:05,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:05,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 03:25:05,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:25:05,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 03:25:05,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:05,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:05,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:05,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-10-14 03:25:05,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:25:05,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:05,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:05,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:05,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:05,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:05,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:05,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:25:05,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:05,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:05,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:05,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:05,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:05,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:05,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:25:05,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:05,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 03:25:05,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:05,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:05,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 03:25:05,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 03:25:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:05,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:05,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 03:25:05,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:05,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 03:25:05,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:05,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 03:25:05,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:25:05,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:25:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 03:25:05,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288109558] [2020-10-14 03:25:05,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:25:05,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:25:05,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931608433] [2020-10-14 03:25:05,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:25:05,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:05,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:25:05,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:25:05,369 INFO L87 Difference]: Start difference. First operand 4136 states and 5881 transitions. Second operand 5 states. [2020-10-14 03:25:16,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:16,340 INFO L93 Difference]: Finished difference Result 11053 states and 16277 transitions. [2020-10-14 03:25:16,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:25:16,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-14 03:25:16,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:16,384 INFO L225 Difference]: With dead ends: 11053 [2020-10-14 03:25:16,384 INFO L226 Difference]: Without dead ends: 7230 [2020-10-14 03:25:16,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:25:16,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7230 states. [2020-10-14 03:25:16,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7230 to 7230. [2020-10-14 03:25:16,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7230 states. [2020-10-14 03:25:16,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7230 states to 7230 states and 9840 transitions. [2020-10-14 03:25:16,687 INFO L78 Accepts]: Start accepts. Automaton has 7230 states and 9840 transitions. Word has length 172 [2020-10-14 03:25:16,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:16,688 INFO L479 AbstractCegarLoop]: Abstraction has 7230 states and 9840 transitions. [2020-10-14 03:25:16,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:25:16,690 INFO L276 IsEmpty]: Start isEmpty. Operand 7230 states and 9840 transitions. [2020-10-14 03:25:16,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 03:25:16,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:16,697 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:25:16,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:25:16,697 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:16,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:16,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1038492659, now seen corresponding path program 1 times [2020-10-14 03:25:16,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:16,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105868760] [2020-10-14 03:25:16,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:16,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:16,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:18,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:20,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:20,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 03:25:20,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:25:20,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3454 [2020-10-14 03:25:20,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:20,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:20,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:20,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 03:25:20,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 03:25:20,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:20,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:20,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:20,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:20,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:20,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:20,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:25:20,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:20,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:20,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:20,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:20,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:20,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:20,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:20,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:20,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:20,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:25:20,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:20,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 03:25:20,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:20,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:20,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:20,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:25:20,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:20,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 03:25:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:20,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:20,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:20,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 03:25:20,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:20,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-14 03:25:20,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:20,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:20,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:20,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:20,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 03:25:20,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:20,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105868760] [2020-10-14 03:25:20,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:20,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:20,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718303775] [2020-10-14 03:25:20,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:20,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:20,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:20,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:20,954 INFO L87 Difference]: Start difference. First operand 7230 states and 9840 transitions. Second operand 7 states. [2020-10-14 03:25:31,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:31,195 INFO L93 Difference]: Finished difference Result 16413 states and 23294 transitions. [2020-10-14 03:25:31,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:25:31,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-10-14 03:25:31,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:31,271 INFO L225 Difference]: With dead ends: 16413 [2020-10-14 03:25:31,271 INFO L226 Difference]: Without dead ends: 9496 [2020-10-14 03:25:31,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:25:31,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9496 states. [2020-10-14 03:25:31,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9496 to 9479. [2020-10-14 03:25:31,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9479 states. [2020-10-14 03:25:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9479 states to 9479 states and 12870 transitions. [2020-10-14 03:25:31,716 INFO L78 Accepts]: Start accepts. Automaton has 9479 states and 12870 transitions. Word has length 229 [2020-10-14 03:25:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:31,717 INFO L479 AbstractCegarLoop]: Abstraction has 9479 states and 12870 transitions. [2020-10-14 03:25:31,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:31,721 INFO L276 IsEmpty]: Start isEmpty. Operand 9479 states and 12870 transitions. [2020-10-14 03:25:31,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-14 03:25:31,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:31,730 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:25:31,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:25:31,731 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:31,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:31,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1549850952, now seen corresponding path program 1 times [2020-10-14 03:25:31,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:31,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598967696] [2020-10-14 03:25:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:31,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:32,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:33,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:33,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 03:25:33,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:25:33,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1753 [2020-10-14 03:25:33,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:33,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:33,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:33,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 03:25:33,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 03:25:33,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:33,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:33,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:33,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:33,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:33,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:33,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:25:33,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:33,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:33,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:33,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:33,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:33,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:33,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:33,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:33,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:33,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 03:25:33,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:33,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 03:25:33,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:33,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:33,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:33,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:33,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 03:25:33,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:33,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 03:25:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:33,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:34,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:34,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 03:25:34,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:34,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-14 03:25:34,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:34,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:34,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:34,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:34,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 03:25:34,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:34,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598967696] [2020-10-14 03:25:34,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:34,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:25:34,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428370841] [2020-10-14 03:25:34,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:25:34,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:34,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:25:34,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:25:34,638 INFO L87 Difference]: Start difference. First operand 9479 states and 12870 transitions. Second operand 8 states. [2020-10-14 03:25:45,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:45,436 INFO L93 Difference]: Finished difference Result 21158 states and 29791 transitions. [2020-10-14 03:25:45,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 03:25:45,438 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 262 [2020-10-14 03:25:45,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:45,498 INFO L225 Difference]: With dead ends: 21158 [2020-10-14 03:25:45,498 INFO L226 Difference]: Without dead ends: 11992 [2020-10-14 03:25:45,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 03:25:45,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11992 states. [2020-10-14 03:25:45,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11992 to 11665. [2020-10-14 03:25:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11665 states. [2020-10-14 03:25:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11665 states to 11665 states and 15499 transitions. [2020-10-14 03:25:45,871 INFO L78 Accepts]: Start accepts. Automaton has 11665 states and 15499 transitions. Word has length 262 [2020-10-14 03:25:45,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:45,872 INFO L479 AbstractCegarLoop]: Abstraction has 11665 states and 15499 transitions. [2020-10-14 03:25:45,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:25:45,873 INFO L276 IsEmpty]: Start isEmpty. Operand 11665 states and 15499 transitions. [2020-10-14 03:25:45,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-14 03:25:45,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:45,886 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:25:45,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:25:45,887 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:45,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:45,887 INFO L82 PathProgramCache]: Analyzing trace with hash -2125735888, now seen corresponding path program 1 times [2020-10-14 03:25:45,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:45,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395687654] [2020-10-14 03:25:45,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:45,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:46,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:47,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:49,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:49,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 03:25:49,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:25:49,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3894 [2020-10-14 03:25:49,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:49,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 03:25:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 03:25:49,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:49,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:49,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:49,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:49,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:49,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:49,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:25:49,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:49,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:49,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:49,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:49,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:50,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:50,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:50,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:25:50,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:50,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 03:25:50,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:50,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:25:50,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:50,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 03:25:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:50,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:50,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:50,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 03:25:50,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:50,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-14 03:25:50,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:50,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:50,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:50,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:50,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 03:25:50,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:50,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395687654] [2020-10-14 03:25:50,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:50,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:50,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272215243] [2020-10-14 03:25:50,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:50,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:50,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:50,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:50,746 INFO L87 Difference]: Start difference. First operand 11665 states and 15499 transitions. Second operand 7 states. [2020-10-14 03:26:09,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:09,323 INFO L93 Difference]: Finished difference Result 34467 states and 49397 transitions. [2020-10-14 03:26:09,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:26:09,325 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-14 03:26:09,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:09,475 INFO L225 Difference]: With dead ends: 34467 [2020-10-14 03:26:09,475 INFO L226 Difference]: Without dead ends: 23115 [2020-10-14 03:26:09,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:26:09,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23115 states. [2020-10-14 03:26:10,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23115 to 15163. [2020-10-14 03:26:10,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15163 states. [2020-10-14 03:26:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15163 states to 15163 states and 19777 transitions. [2020-10-14 03:26:10,129 INFO L78 Accepts]: Start accepts. Automaton has 15163 states and 19777 transitions. Word has length 265 [2020-10-14 03:26:10,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:10,130 INFO L479 AbstractCegarLoop]: Abstraction has 15163 states and 19777 transitions. [2020-10-14 03:26:10,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 15163 states and 19777 transitions. [2020-10-14 03:26:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-14 03:26:10,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:10,146 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:26:10,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:26:10,146 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:10,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:10,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1604071211, now seen corresponding path program 1 times [2020-10-14 03:26:10,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:10,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542471153] [2020-10-14 03:26:10,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:10,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:10,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:10,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:11,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:14,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:14,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-14 03:26:14,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:26:14,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4523 [2020-10-14 03:26:14,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:14,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:14,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:14,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 03:26:14,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 03:26:14,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:14,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:14,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:14,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:14,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:14,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:14,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:26:14,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:14,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:14,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:14,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:14,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:14,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:15,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:15,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 03:26:15,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:15,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 03:26:15,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:15,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 03:26:15,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:15,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 03:26:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:15,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:15,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:15,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:15,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 03:26:15,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:26:15,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-14 03:26:15,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:15,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:15,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:15,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:15,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 03:26:15,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:26:15,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542471153] [2020-10-14 03:26:15,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:15,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:15,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716075810] [2020-10-14 03:26:15,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:15,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:15,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:15,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:15,866 INFO L87 Difference]: Start difference. First operand 15163 states and 19777 transitions. Second operand 7 states. [2020-10-14 03:26:33,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:33,290 INFO L93 Difference]: Finished difference Result 40510 states and 56445 transitions. [2020-10-14 03:26:33,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:26:33,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-10-14 03:26:33,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:33,414 INFO L225 Difference]: With dead ends: 40510 [2020-10-14 03:26:33,414 INFO L226 Difference]: Without dead ends: 25660 [2020-10-14 03:26:33,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:26:33,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25660 states. [2020-10-14 03:26:33,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25660 to 14880. [2020-10-14 03:26:33,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14880 states. [2020-10-14 03:26:33,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14880 states to 14880 states and 19260 transitions. [2020-10-14 03:26:33,979 INFO L78 Accepts]: Start accepts. Automaton has 14880 states and 19260 transitions. Word has length 274 [2020-10-14 03:26:33,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:33,980 INFO L479 AbstractCegarLoop]: Abstraction has 14880 states and 19260 transitions. [2020-10-14 03:26:33,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:33,980 INFO L276 IsEmpty]: Start isEmpty. Operand 14880 states and 19260 transitions. [2020-10-14 03:26:33,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-14 03:26:33,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:33,997 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:26:33,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:26:33,998 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:34,000 INFO L82 PathProgramCache]: Analyzing trace with hash -225459704, now seen corresponding path program 1 times [2020-10-14 03:26:34,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:34,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770460927] [2020-10-14 03:26:34,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:34,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:34,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:34,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:37,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:39,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:39,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-14 03:26:39,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:26:39,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 03:26:39,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:39,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-14 03:26:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 03:26:39,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:39,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:39,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:39,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:39,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:39,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:39,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:26:39,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:39,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:39,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:39,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:39,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:39,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:39,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:39,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:39,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:39,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:26:39,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:39,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 03:26:39,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:39,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:39,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:39,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 03:26:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:39,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:39,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:39,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:26:39,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:39,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 03:26:39,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:39,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:39,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:39,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:26:39,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:39,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-14 03:26:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:39,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:39,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:39,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 03:26:39,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:39,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-14 03:26:39,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:39,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 03:26:39,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 03:26:39,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770460927] [2020-10-14 03:26:39,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:39,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:39,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880466934] [2020-10-14 03:26:39,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:39,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:39,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:39,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:39,830 INFO L87 Difference]: Start difference. First operand 14880 states and 19260 transitions. Second operand 7 states. [2020-10-14 03:26:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:51,765 INFO L93 Difference]: Finished difference Result 35876 states and 48307 transitions. [2020-10-14 03:26:51,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:26:51,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 314 [2020-10-14 03:26:51,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:51,845 INFO L225 Difference]: With dead ends: 35876 [2020-10-14 03:26:51,846 INFO L226 Difference]: Without dead ends: 18748 [2020-10-14 03:26:51,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:26:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18748 states. [2020-10-14 03:26:52,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18748 to 16457. [2020-10-14 03:26:52,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16457 states. [2020-10-14 03:26:52,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16457 states to 16457 states and 20251 transitions. [2020-10-14 03:26:52,358 INFO L78 Accepts]: Start accepts. Automaton has 16457 states and 20251 transitions. Word has length 314 [2020-10-14 03:26:52,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:52,359 INFO L479 AbstractCegarLoop]: Abstraction has 16457 states and 20251 transitions. [2020-10-14 03:26:52,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:52,359 INFO L276 IsEmpty]: Start isEmpty. Operand 16457 states and 20251 transitions. [2020-10-14 03:26:52,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-14 03:26:52,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:52,395 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:26:52,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:26:52,396 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:52,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:52,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1446673717, now seen corresponding path program 1 times [2020-10-14 03:26:52,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:52,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664969260] [2020-10-14 03:26:52,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:52,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:52,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:54,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:54,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:54,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-14 03:26:54,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:26:54,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2483 [2020-10-14 03:26:54,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:54,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:54,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:54,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-14 03:26:54,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 03:26:54,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:55,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:55,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:55,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:55,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:55,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:55,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:26:55,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:55,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:55,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:55,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:55,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:55,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:55,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:55,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:55,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:55,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 03:26:55,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:55,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 03:26:55,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:55,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:55,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-14 03:26:55,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:55,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-14 03:26:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:55,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:55,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:55,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 03:26:55,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:55,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 03:26:55,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:55,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:55,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 03:26:55,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:26:55,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664969260] [2020-10-14 03:26:55,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:55,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:55,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775314473] [2020-10-14 03:26:55,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:55,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:55,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:55,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:55,824 INFO L87 Difference]: Start difference. First operand 16457 states and 20251 transitions. Second operand 7 states. [2020-10-14 03:27:08,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:08,197 INFO L93 Difference]: Finished difference Result 35105 states and 43468 transitions. [2020-10-14 03:27:08,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:27:08,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-14 03:27:08,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:08,243 INFO L225 Difference]: With dead ends: 35105 [2020-10-14 03:27:08,244 INFO L226 Difference]: Without dead ends: 17078 [2020-10-14 03:27:08,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:27:08,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17078 states. [2020-10-14 03:27:08,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17078 to 15808. [2020-10-14 03:27:08,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15808 states. [2020-10-14 03:27:08,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15808 states to 15808 states and 18595 transitions. [2020-10-14 03:27:08,599 INFO L78 Accepts]: Start accepts. Automaton has 15808 states and 18595 transitions. Word has length 357 [2020-10-14 03:27:08,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:08,600 INFO L479 AbstractCegarLoop]: Abstraction has 15808 states and 18595 transitions. [2020-10-14 03:27:08,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:27:08,600 INFO L276 IsEmpty]: Start isEmpty. Operand 15808 states and 18595 transitions. [2020-10-14 03:27:08,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-10-14 03:27:08,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:08,618 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:08,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:27:08,618 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:08,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:08,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1590567087, now seen corresponding path program 1 times [2020-10-14 03:27:08,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:08,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772172115] [2020-10-14 03:27:08,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:08,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:09,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:10,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:13,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:13,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-14 03:27:13,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:27:13,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4706 [2020-10-14 03:27:13,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:13,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:13,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:13,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 292 [2020-10-14 03:27:13,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 03:27:13,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:13,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:13,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:13,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:13,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:13,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:13,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:27:13,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:13,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:13,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:13,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:13,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:13,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:13,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:27:13,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:13,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 03:27:13,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:13,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:13,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:27:13,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:27:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:13,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:13,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:13,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:27:13,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:13,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 03:27:13,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:13,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:13,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:13,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:13,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:27:13,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:13,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-14 03:27:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:13,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:13,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:13,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 03:27:13,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:13,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 03:27:13,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:13,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:27:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 03:27:13,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 03:27:14,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772172115] [2020-10-14 03:27:14,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:14,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:27:14,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586461971] [2020-10-14 03:27:14,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:27:14,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:14,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:27:14,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:27:14,253 INFO L87 Difference]: Start difference. First operand 15808 states and 18595 transitions. Second operand 7 states. [2020-10-14 03:27:24,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:24,604 INFO L93 Difference]: Finished difference Result 32281 states and 38042 transitions. [2020-10-14 03:27:24,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:27:24,606 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 452 [2020-10-14 03:27:24,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:24,645 INFO L225 Difference]: With dead ends: 32281 [2020-10-14 03:27:24,646 INFO L226 Difference]: Without dead ends: 16479 [2020-10-14 03:27:24,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 03:27:24,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16479 states. [2020-10-14 03:27:24,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16479 to 16469. [2020-10-14 03:27:24,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16469 states. [2020-10-14 03:27:24,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16469 states to 16469 states and 19322 transitions. [2020-10-14 03:27:24,951 INFO L78 Accepts]: Start accepts. Automaton has 16469 states and 19322 transitions. Word has length 452 [2020-10-14 03:27:24,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:24,953 INFO L479 AbstractCegarLoop]: Abstraction has 16469 states and 19322 transitions. [2020-10-14 03:27:24,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:27:24,953 INFO L276 IsEmpty]: Start isEmpty. Operand 16469 states and 19322 transitions. [2020-10-14 03:27:24,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-14 03:27:24,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:24,973 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:24,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:27:24,974 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:24,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:24,974 INFO L82 PathProgramCache]: Analyzing trace with hash 23837579, now seen corresponding path program 1 times [2020-10-14 03:27:24,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:24,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383805576] [2020-10-14 03:27:24,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:25,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:25,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:26,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:30,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:30,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-14 03:27:30,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:27:30,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 03:27:30,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:30,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:30,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:30,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-14 03:27:30,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 03:27:30,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:30,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:30,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:30,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:30,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:30,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:30,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:27:30,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:30,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:30,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:30,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:30,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:30,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:30,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:30,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:30,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:30,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:27:30,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:30,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 03:27:30,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:30,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:30,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:30,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:30,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:30,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:30,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:27:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:30,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:30,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:30,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:27:30,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:30,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 03:27:30,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:30,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:30,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:30,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:30,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:27:30,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:30,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-14 03:27:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:30,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:30,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:30,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 03:27:30,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:30,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 03:27:30,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:30,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:30,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:27:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 03:27:30,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 03:27:30,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383805576] [2020-10-14 03:27:30,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:30,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:27:30,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731734378] [2020-10-14 03:27:30,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:27:30,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:30,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:27:30,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:27:30,872 INFO L87 Difference]: Start difference. First operand 16469 states and 19322 transitions. Second operand 7 states. [2020-10-14 03:27:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:40,116 INFO L93 Difference]: Finished difference Result 38525 states and 45331 transitions. [2020-10-14 03:27:40,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:27:40,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 457 [2020-10-14 03:27:40,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:40,182 INFO L225 Difference]: With dead ends: 38525 [2020-10-14 03:27:40,182 INFO L226 Difference]: Without dead ends: 22062 [2020-10-14 03:27:40,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:27:40,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22062 states. [2020-10-14 03:27:40,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22062 to 19877. [2020-10-14 03:27:40,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19877 states. [2020-10-14 03:27:40,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19877 states to 19877 states and 22974 transitions. [2020-10-14 03:27:40,558 INFO L78 Accepts]: Start accepts. Automaton has 19877 states and 22974 transitions. Word has length 457 [2020-10-14 03:27:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:40,558 INFO L479 AbstractCegarLoop]: Abstraction has 19877 states and 22974 transitions. [2020-10-14 03:27:40,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:27:40,559 INFO L276 IsEmpty]: Start isEmpty. Operand 19877 states and 22974 transitions. [2020-10-14 03:27:40,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-10-14 03:27:40,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:40,572 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:40,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:27:40,573 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:40,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:40,573 INFO L82 PathProgramCache]: Analyzing trace with hash 197237511, now seen corresponding path program 1 times [2020-10-14 03:27:40,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:40,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805957850] [2020-10-14 03:27:40,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:40,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:40,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:41,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:45,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:45,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-14 03:27:45,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:27:45,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 03:27:45,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:45,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-14 03:27:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 03:27:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:45,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:45,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:45,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:45,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:45,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:45,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:27:45,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:45,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:45,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:45,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:45,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:45,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:45,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:45,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:45,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:27:45,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:45,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 03:27:45,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:45,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:45,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:45,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:45,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:27:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:45,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:46,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:46,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:27:46,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:46,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 03:27:46,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:46,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:27:46,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:46,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:27:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:46,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:46,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:46,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 03:27:46,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:46,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-14 03:27:46,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:46,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:46,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:46,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:27:46,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 03:27:46,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 03:27:46,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805957850] [2020-10-14 03:27:46,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:46,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:27:46,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793729756] [2020-10-14 03:27:46,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:27:46,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:46,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:27:46,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:27:46,551 INFO L87 Difference]: Start difference. First operand 19877 states and 22974 transitions. Second operand 7 states.