/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_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:38:04,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:38:04,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:38:04,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:38:04,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:38:04,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:38:04,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:38:04,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:38:04,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:38:04,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:38:04,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:38:04,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:38:04,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:38:04,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:38:04,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:38:04,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:38:04,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:38:04,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:38:04,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:38:04,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:38:04,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:38:04,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:38:04,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:38:04,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:38:04,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:38:04,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:38:04,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:38:04,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:38:04,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:38:04,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:38:04,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:38:04,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:38:04,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:38:04,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:38:04,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:38:04,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:38:04,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:38:04,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:38:04,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:38:04,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:38:04,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:38:04,746 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 03:38:04,789 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:38:04,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:38:04,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:38:04,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:38:04,793 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:38:04,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:38:04,793 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:38:04,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:38:04,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:38:04,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:38:04,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:38:04,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:38:04,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:38:04,796 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:38:04,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:38:04,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:38:04,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:38:04,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:38:04,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:38:04,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:38:04,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:38:04,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:38:04,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:38:04,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:38:04,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:38:04,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:38:04,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:38:04,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:38:04,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:38:04,800 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 03:38:05,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:38:05,119 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:38:05,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:38:05,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:38:05,126 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:38:05,127 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label56.c [2020-10-14 03:38:05,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44c780ecd/628a25f2b4f948239eb55ed734d3bce3/FLAG3622ddc14 [2020-10-14 03:38:05,943 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:38:05,944 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label56.c [2020-10-14 03:38:05,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44c780ecd/628a25f2b4f948239eb55ed734d3bce3/FLAG3622ddc14 [2020-10-14 03:38:06,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44c780ecd/628a25f2b4f948239eb55ed734d3bce3 [2020-10-14 03:38:06,129 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:38:06,132 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:38:06,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:38:06,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:38:06,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:38:06,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:38:06" (1/1) ... [2020-10-14 03:38:06,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee2931e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:06, skipping insertion in model container [2020-10-14 03:38:06,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:38:06" (1/1) ... [2020-10-14 03:38:06,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:38:06,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:38:07,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:38:07,379 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:38:07,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:38:07,654 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:38:07,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:07 WrapperNode [2020-10-14 03:38:07,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:38:07,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:38:07,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:38:07,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:38:07,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:07" (1/1) ... [2020-10-14 03:38:07,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:07" (1/1) ... [2020-10-14 03:38:07,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:07" (1/1) ... [2020-10-14 03:38:07,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:07" (1/1) ... [2020-10-14 03:38:07,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:07" (1/1) ... [2020-10-14 03:38:07,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:07" (1/1) ... [2020-10-14 03:38:07,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:07" (1/1) ... [2020-10-14 03:38:07,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:38:07,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:38:07,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:38:07,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:38:07,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:07" (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 03:38:07,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:38:07,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:38:07,986 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:38:07,987 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:38:07,987 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:38:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:38:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:38:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:38:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:38:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:38:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:38:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:38:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:38:14,234 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:38:14,235 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:38:14,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:38:14 BoogieIcfgContainer [2020-10-14 03:38:14,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:38:14,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:38:14,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:38:14,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:38:14,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:38:06" (1/3) ... [2020-10-14 03:38:14,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2ec727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:38:14, skipping insertion in model container [2020-10-14 03:38:14,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:07" (2/3) ... [2020-10-14 03:38:14,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2ec727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:38:14, skipping insertion in model container [2020-10-14 03:38:14,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:38:14" (3/3) ... [2020-10-14 03:38:14,266 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label56.c [2020-10-14 03:38:14,281 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:38:14,298 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:38:14,317 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:38:14,368 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:38:14,369 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:38:14,369 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:38:14,369 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:38:14,369 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:38:14,369 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:38:14,370 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:38:14,370 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:38:14,413 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:38:14,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 03:38:14,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:14,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:38:14,428 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:14,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:14,437 INFO L82 PathProgramCache]: Analyzing trace with hash -2075233339, now seen corresponding path program 1 times [2020-10-14 03:38:14,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:14,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733158180] [2020-10-14 03:38:14,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:14,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:15,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:15,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 03:38:15,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:15,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-10-14 03:38:15,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:15,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:38:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:38:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 03:38:15,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:38:15,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:15,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:15,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:15,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:15,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:15,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 03:38:15,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:15,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:15,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:15,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:15,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:38:15,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:15,338 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 03:38:15,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733158180] [2020-10-14 03:38:15,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:38:15,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 03:38:15,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948051010] [2020-10-14 03:38:15,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:38:15,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:15,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:38:15,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:38:15,373 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 5 states. [2020-10-14 03:38:25,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:25,105 INFO L93 Difference]: Finished difference Result 1517 states and 2786 transitions. [2020-10-14 03:38:25,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:38:25,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-14 03:38:25,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:25,148 INFO L225 Difference]: With dead ends: 1517 [2020-10-14 03:38:25,148 INFO L226 Difference]: Without dead ends: 1010 [2020-10-14 03:38:25,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:38:25,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-14 03:38:25,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1000. [2020-10-14 03:38:25,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-10-14 03:38:25,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1378 transitions. [2020-10-14 03:38:25,302 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1378 transitions. Word has length 39 [2020-10-14 03:38:25,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:25,304 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1378 transitions. [2020-10-14 03:38:25,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:38:25,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1378 transitions. [2020-10-14 03:38:25,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 03:38:25,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:25,314 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:38:25,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:38:25,315 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:25,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:25,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1497947422, now seen corresponding path program 1 times [2020-10-14 03:38:25,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:25,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446595757] [2020-10-14 03:38:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:25,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:25,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:27,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:27,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 03:38:27,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:38:27,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1836 [2020-10-14 03:38:27,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:27,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:27,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:27,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:38:27,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 03:38:27,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:38:27,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:27,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:27,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:27,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:27,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:27,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:38:27,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:27,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:27,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:27,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:27,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:27,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:38:27,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:27,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:27,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:27,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:38:27,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:27,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 03:38:27,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:27,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:38:27,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 03:38:27,594 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:38:27,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446595757] [2020-10-14 03:38:27,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:27,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:38:27,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450347545] [2020-10-14 03:38:27,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:38:27,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:27,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:38:27,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:38:27,600 INFO L87 Difference]: Start difference. First operand 1000 states and 1378 transitions. Second operand 5 states. [2020-10-14 03:38:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:35,882 INFO L93 Difference]: Finished difference Result 2020 states and 2974 transitions. [2020-10-14 03:38:35,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:38:35,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-14 03:38:35,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:35,894 INFO L225 Difference]: With dead ends: 2020 [2020-10-14 03:38:35,895 INFO L226 Difference]: Without dead ends: 1335 [2020-10-14 03:38:35,899 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 03:38:35,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2020-10-14 03:38:35,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1329. [2020-10-14 03:38:35,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1329 states. [2020-10-14 03:38:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1830 transitions. [2020-10-14 03:38:35,977 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1830 transitions. Word has length 108 [2020-10-14 03:38:35,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:35,982 INFO L479 AbstractCegarLoop]: Abstraction has 1329 states and 1830 transitions. [2020-10-14 03:38:35,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:38:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1830 transitions. [2020-10-14 03:38:35,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 03:38:35,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:36,000 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:38:36,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:38:36,000 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:36,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:36,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2012534089, now seen corresponding path program 1 times [2020-10-14 03:38:36,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:36,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435183948] [2020-10-14 03:38:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:36,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:36,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:37,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:37,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 03:38:37,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:38:37,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1268 [2020-10-14 03:38:37,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:37,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:37,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 03:38:37,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 03:38:37,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:37,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:37,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:37,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:37,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:37,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:37,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:38:37,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:37,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:37,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:37,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:37,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:37,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:38:37,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:37,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:37,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:37,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:38:37,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:37,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 03:38:37,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:37,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:38:37,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:38:37,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435183948] [2020-10-14 03:38:37,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:37,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:38:37,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333489702] [2020-10-14 03:38:37,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:38:37,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:37,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:38:37,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:38:37,775 INFO L87 Difference]: Start difference. First operand 1329 states and 1830 transitions. Second operand 5 states. [2020-10-14 03:38:49,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:49,739 INFO L93 Difference]: Finished difference Result 3304 states and 4714 transitions. [2020-10-14 03:38:49,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:38:49,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-14 03:38:49,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:49,757 INFO L225 Difference]: With dead ends: 3304 [2020-10-14 03:38:49,757 INFO L226 Difference]: Without dead ends: 2290 [2020-10-14 03:38:49,760 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 03:38:49,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2020-10-14 03:38:49,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 2278. [2020-10-14 03:38:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2278 states. [2020-10-14 03:38:49,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 3025 transitions. [2020-10-14 03:38:49,834 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 3025 transitions. Word has length 124 [2020-10-14 03:38:49,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:49,835 INFO L479 AbstractCegarLoop]: Abstraction has 2278 states and 3025 transitions. [2020-10-14 03:38:49,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:38:49,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 3025 transitions. [2020-10-14 03:38:49,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 03:38:49,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:49,845 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:38:49,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:38:49,846 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:49,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:49,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1584188443, now seen corresponding path program 1 times [2020-10-14 03:38:49,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:49,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824131943] [2020-10-14 03:38:49,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:49,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:50,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:50,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:50,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:51,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:51,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 03:38:51,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:38:51,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1811 [2020-10-14 03:38:51,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:51,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:51,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:51,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-14 03:38:51,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:38:51,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:51,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:51,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:51,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:51,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:51,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:51,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:38:51,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:51,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:51,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:51,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:51,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:51,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:51,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:38:51,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:51,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 03:38:51,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:51,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:51,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:51,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:38:51,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:38:51,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:52,083 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:38:52,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824131943] [2020-10-14 03:38:52,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:38:52,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:38:52,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379292446] [2020-10-14 03:38:52,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:38:52,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:52,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:38:52,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:38:52,090 INFO L87 Difference]: Start difference. First operand 2278 states and 3025 transitions. Second operand 5 states. [2020-10-14 03:39:01,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:01,290 INFO L93 Difference]: Finished difference Result 5824 states and 7880 transitions. [2020-10-14 03:39:01,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:39:01,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-14 03:39:01,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:01,310 INFO L225 Difference]: With dead ends: 5824 [2020-10-14 03:39:01,310 INFO L226 Difference]: Without dead ends: 3552 [2020-10-14 03:39:01,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 03:39:01,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2020-10-14 03:39:01,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3532. [2020-10-14 03:39:01,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3532 states. [2020-10-14 03:39:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 4735 transitions. [2020-10-14 03:39:01,404 INFO L78 Accepts]: Start accepts. Automaton has 3532 states and 4735 transitions. Word has length 125 [2020-10-14 03:39:01,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:01,405 INFO L479 AbstractCegarLoop]: Abstraction has 3532 states and 4735 transitions. [2020-10-14 03:39:01,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:39:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3532 states and 4735 transitions. [2020-10-14 03:39:01,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 03:39:01,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:01,407 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:39:01,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:39:01,408 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:01,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:01,408 INFO L82 PathProgramCache]: Analyzing trace with hash 955891483, now seen corresponding path program 1 times [2020-10-14 03:39:01,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:01,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086526202] [2020-10-14 03:39:01,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:01,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:01,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:02,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:02,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 03:39:02,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:39:02,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 752 [2020-10-14 03:39:02,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:02,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:02,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:02,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 03:39:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 03:39:02,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:02,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:02,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:02,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:02,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:02,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:02,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:39:02,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:02,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:02,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:02,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:02,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:02,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:02,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:02,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:02,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:02,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 03:39:02,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:02,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 03:39:02,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:02,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:02,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 03:39:02,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:39:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:02,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086526202] [2020-10-14 03:39:02,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:02,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:39:02,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177441328] [2020-10-14 03:39:02,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:39:02,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:02,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:39:02,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:39:02,497 INFO L87 Difference]: Start difference. First operand 3532 states and 4735 transitions. Second operand 5 states. [2020-10-14 03:39:08,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:08,796 INFO L93 Difference]: Finished difference Result 9541 states and 13068 transitions. [2020-10-14 03:39:08,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:39:08,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-14 03:39:08,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:08,842 INFO L225 Difference]: With dead ends: 9541 [2020-10-14 03:39:08,843 INFO L226 Difference]: Without dead ends: 6015 [2020-10-14 03:39:08,857 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 03:39:08,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6015 states. [2020-10-14 03:39:09,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6015 to 6009. [2020-10-14 03:39:09,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6009 states. [2020-10-14 03:39:09,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6009 states to 6009 states and 7529 transitions. [2020-10-14 03:39:09,045 INFO L78 Accepts]: Start accepts. Automaton has 6009 states and 7529 transitions. Word has length 142 [2020-10-14 03:39:09,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:09,047 INFO L479 AbstractCegarLoop]: Abstraction has 6009 states and 7529 transitions. [2020-10-14 03:39:09,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:39:09,047 INFO L276 IsEmpty]: Start isEmpty. Operand 6009 states and 7529 transitions. [2020-10-14 03:39:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-14 03:39:09,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:09,054 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:09,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:39:09,055 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:09,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:09,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1155698645, now seen corresponding path program 1 times [2020-10-14 03:39:09,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:09,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231830294] [2020-10-14 03:39:09,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:09,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:09,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:09,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:10,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:11,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:12,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:13,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:14,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:14,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-14 03:39:14,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 03:39:14,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 03:39:14,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:14,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:39:14,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:39:14,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:14,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:14,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:14,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:14,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:14,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:14,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:39:14,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:14,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:14,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:14,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:14,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:14,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:14,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:14,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:14,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:14,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:39:14,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:14,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 03:39:14,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:14,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:14,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:39:14,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:14,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:39:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:14,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:14,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:14,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:39:14,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:14,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-14 03:39:14,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:14,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:14,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:14,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:14,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:39:14,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:39:14,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231830294] [2020-10-14 03:39:14,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:14,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:39:14,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233595148] [2020-10-14 03:39:14,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:39:14,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:14,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:39:14,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:39:14,943 INFO L87 Difference]: Start difference. First operand 6009 states and 7529 transitions. Second operand 7 states. [2020-10-14 03:39:23,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:23,519 INFO L93 Difference]: Finished difference Result 14875 states and 19247 transitions. [2020-10-14 03:39:23,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:39:23,526 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-10-14 03:39:23,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:23,559 INFO L225 Difference]: With dead ends: 14875 [2020-10-14 03:39:23,559 INFO L226 Difference]: Without dead ends: 7921 [2020-10-14 03:39:23,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:39:23,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7921 states. [2020-10-14 03:39:23,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7921 to 7291. [2020-10-14 03:39:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7291 states. [2020-10-14 03:39:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7291 states to 7291 states and 8431 transitions. [2020-10-14 03:39:23,782 INFO L78 Accepts]: Start accepts. Automaton has 7291 states and 8431 transitions. Word has length 257 [2020-10-14 03:39:23,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:23,783 INFO L479 AbstractCegarLoop]: Abstraction has 7291 states and 8431 transitions. [2020-10-14 03:39:23,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:39:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 7291 states and 8431 transitions. [2020-10-14 03:39:23,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-14 03:39:23,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:23,792 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 03:39:23,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:39:23,793 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:23,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:23,793 INFO L82 PathProgramCache]: Analyzing trace with hash -2088134136, now seen corresponding path program 1 times [2020-10-14 03:39:23,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:23,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049066259] [2020-10-14 03:39:23,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:24,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:24,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:24,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:28,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:28,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-14 03:39:28,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:39:28,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-14 03:39:28,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:28,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:28,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:28,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:39:28,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:39:28,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:29,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:29,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:29,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:29,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:29,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:29,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:39:29,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:29,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:29,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:29,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:29,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:29,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:29,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:29,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:39:29,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:29,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 03:39:29,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:29,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:29,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:29,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:29,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:39:29,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:29,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:39:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:29,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:29,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:29,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:39:29,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:29,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 03:39:29,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:29,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:39:29,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:39:30,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049066259] [2020-10-14 03:39:30,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:30,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:39:30,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540611720] [2020-10-14 03:39:30,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:39:30,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:30,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:39:30,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:39:30,102 INFO L87 Difference]: Start difference. First operand 7291 states and 8431 transitions. Second operand 7 states. [2020-10-14 03:39:39,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:39,948 INFO L93 Difference]: Finished difference Result 18361 states and 21689 transitions. [2020-10-14 03:39:39,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:39:39,950 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-10-14 03:39:39,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:39,985 INFO L225 Difference]: With dead ends: 18361 [2020-10-14 03:39:39,986 INFO L226 Difference]: Without dead ends: 11383 [2020-10-14 03:39:40,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:39:40,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11383 states. [2020-10-14 03:39:40,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11383 to 10750. [2020-10-14 03:39:40,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10750 states. [2020-10-14 03:39:40,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10750 states to 10750 states and 12193 transitions. [2020-10-14 03:39:40,208 INFO L78 Accepts]: Start accepts. Automaton has 10750 states and 12193 transitions. Word has length 350 [2020-10-14 03:39:40,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:40,209 INFO L479 AbstractCegarLoop]: Abstraction has 10750 states and 12193 transitions. [2020-10-14 03:39:40,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:39:40,209 INFO L276 IsEmpty]: Start isEmpty. Operand 10750 states and 12193 transitions. [2020-10-14 03:39:40,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-14 03:39:40,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:40,219 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:40,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:39:40,220 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:40,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:40,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1708434844, now seen corresponding path program 1 times [2020-10-14 03:39:40,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:40,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980691391] [2020-10-14 03:39:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:40,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:40,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:41,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:42,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:42,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-14 03:39:42,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:39:42,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2354 [2020-10-14 03:39:42,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:42,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 03:39:42,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 03:39:42,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:42,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:42,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:42,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:42,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:42,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:39:42,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:42,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:42,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:42,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:42,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:43,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:43,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:39:43,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:43,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 03:39:43,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:43,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 03:39:43,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:43,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:39:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:43,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:43,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:43,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 03:39:43,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:43,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 03:39:43,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:43,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:43,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:43,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:43,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 03:39:43,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:39:43,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980691391] [2020-10-14 03:39:43,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:43,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:39:43,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250107357] [2020-10-14 03:39:43,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:39:43,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:43,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:39:43,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:39:43,551 INFO L87 Difference]: Start difference. First operand 10750 states and 12193 transitions. Second operand 8 states. [2020-10-14 03:39:52,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:52,457 INFO L93 Difference]: Finished difference Result 28436 states and 33984 transitions. [2020-10-14 03:39:52,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 03:39:52,459 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 421 [2020-10-14 03:39:52,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:52,541 INFO L225 Difference]: With dead ends: 28436 [2020-10-14 03:39:52,541 INFO L226 Difference]: Without dead ends: 17999 [2020-10-14 03:39:52,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 03:39:52,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17999 states. [2020-10-14 03:39:52,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17999 to 17050. [2020-10-14 03:39:52,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17050 states. [2020-10-14 03:39:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17050 states to 17050 states and 20042 transitions. [2020-10-14 03:39:52,990 INFO L78 Accepts]: Start accepts. Automaton has 17050 states and 20042 transitions. Word has length 421 [2020-10-14 03:39:52,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:52,991 INFO L479 AbstractCegarLoop]: Abstraction has 17050 states and 20042 transitions. [2020-10-14 03:39:52,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:39:52,991 INFO L276 IsEmpty]: Start isEmpty. Operand 17050 states and 20042 transitions. [2020-10-14 03:39:53,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2020-10-14 03:39:53,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:53,015 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:53,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:39:53,016 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:53,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:53,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1874868387, now seen corresponding path program 1 times [2020-10-14 03:39:53,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:53,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488327549] [2020-10-14 03:39:53,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:53,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:53,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:55,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:55,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:58,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:58,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 517 [2020-10-14 03:39:58,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:39:58,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-14 03:39:58,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:58,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:39:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:39:58,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:58,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:58,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:58,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:58,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:58,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:58,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:39:58,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:58,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:58,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:58,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:58,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:58,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:58,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:58,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:58,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:58,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:39:58,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:58,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 03:39:58,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:58,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:39:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:58,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:39:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:58,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:58,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:58,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:39:58,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:58,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 03:39:58,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:58,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:58,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:58,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:58,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:39:58,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:58,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 03:39:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:58,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:58,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:58,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:39:58,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:58,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 03:39:58,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:58,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 03:39:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:58,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:59,311 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 208 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 03:39:59,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488327549] [2020-10-14 03:39:59,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:59,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:39:59,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594281082] [2020-10-14 03:39:59,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:39:59,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:59,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:39:59,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:39:59,315 INFO L87 Difference]: Start difference. First operand 17050 states and 20042 transitions. Second operand 7 states. [2020-10-14 03:40:08,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:08,175 INFO L93 Difference]: Finished difference Result 34964 states and 42600 transitions. [2020-10-14 03:40:08,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:40:08,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 503 [2020-10-14 03:40:08,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:08,253 INFO L225 Difference]: With dead ends: 34964 [2020-10-14 03:40:08,253 INFO L226 Difference]: Without dead ends: 18227 [2020-10-14 03:40:08,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:40:08,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18227 states. [2020-10-14 03:40:08,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18227 to 17991. [2020-10-14 03:40:08,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17991 states. [2020-10-14 03:40:08,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17991 states to 17991 states and 21039 transitions. [2020-10-14 03:40:08,709 INFO L78 Accepts]: Start accepts. Automaton has 17991 states and 21039 transitions. Word has length 503 [2020-10-14 03:40:08,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:08,710 INFO L479 AbstractCegarLoop]: Abstraction has 17991 states and 21039 transitions. [2020-10-14 03:40:08,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:40:08,711 INFO L276 IsEmpty]: Start isEmpty. Operand 17991 states and 21039 transitions. [2020-10-14 03:40:08,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-10-14 03:40:08,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:08,728 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:40:08,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:40:08,729 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:08,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:08,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1796611803, now seen corresponding path program 1 times [2020-10-14 03:40:08,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:08,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902088364] [2020-10-14 03:40:08,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:08,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:09,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:09,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:10,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:10,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 529 [2020-10-14 03:40:10,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:40:10,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2116 [2020-10-14 03:40:10,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:10,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:10,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:40:10,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:40:10,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:11,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:11,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:11,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:11,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:11,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:11,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:40:11,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:11,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:11,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:11,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:11,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:11,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:11,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:11,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:11,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:11,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:40:11,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:11,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 03:40:11,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:11,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:11,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:11,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:11,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:11,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:11,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:40:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:11,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:11,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:11,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:40:11,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:11,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 03:40:11,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:11,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:11,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:11,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:11,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:40:11,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:11,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:40:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:11,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:11,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:11,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:40:11,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:11,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 03:40:11,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:11,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:11,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:11,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:11,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:40:11,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:11,708 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 253 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 03:40:11,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902088364] [2020-10-14 03:40:11,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:11,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:40:11,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166441099] [2020-10-14 03:40:11,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:40:11,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:11,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:40:11,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:40:11,712 INFO L87 Difference]: Start difference. First operand 17991 states and 21039 transitions. Second operand 8 states. [2020-10-14 03:40:22,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:22,219 INFO L93 Difference]: Finished difference Result 36562 states and 44366 transitions. [2020-10-14 03:40:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 03:40:22,221 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 515 [2020-10-14 03:40:22,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:22,281 INFO L225 Difference]: With dead ends: 36562 [2020-10-14 03:40:22,282 INFO L226 Difference]: Without dead ends: 18884 [2020-10-14 03:40:22,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 03:40:22,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18884 states. [2020-10-14 03:40:22,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18884 to 18866. [2020-10-14 03:40:22,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18866 states. [2020-10-14 03:40:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18866 states to 18866 states and 22213 transitions. [2020-10-14 03:40:22,692 INFO L78 Accepts]: Start accepts. Automaton has 18866 states and 22213 transitions. Word has length 515 [2020-10-14 03:40:22,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:22,694 INFO L479 AbstractCegarLoop]: Abstraction has 18866 states and 22213 transitions. [2020-10-14 03:40:22,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:40:22,695 INFO L276 IsEmpty]: Start isEmpty. Operand 18866 states and 22213 transitions. [2020-10-14 03:40:22,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2020-10-14 03:40:22,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:22,720 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:40:22,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:40:22,721 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:22,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:22,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1994889422, now seen corresponding path program 1 times [2020-10-14 03:40:22,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:22,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282801129] [2020-10-14 03:40:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:22,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:23,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:23,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:24,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:24,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:24,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:24,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 570 [2020-10-14 03:40:24,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:40:24,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1984 [2020-10-14 03:40:24,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:24,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:24,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:24,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:40:24,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 03:40:24,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:24,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:24,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:24,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:24,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:24,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:40:24,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:24,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:24,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:24,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:24,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:25,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:25,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:40:25,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:25,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 03:40:25,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:25,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:25,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:25,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:25,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:25,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:25,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:40:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:25,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:25,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:25,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:40:25,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:25,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 03:40:25,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:25,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:25,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:25,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:25,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:40:25,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:25,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:40:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:25,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:25,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:25,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:25,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 03:40:25,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:40:25,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 03:40:25,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:25,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:25,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:25,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:25,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 03:40:25,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 03:40:25,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282801129] [2020-10-14 03:40:25,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:25,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:40:25,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067157220] [2020-10-14 03:40:25,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:40:25,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:25,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:40:25,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:40:25,673 INFO L87 Difference]: Start difference. First operand 18866 states and 22213 transitions. Second operand 7 states. [2020-10-14 03:40:39,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:39,116 INFO L93 Difference]: Finished difference Result 41481 states and 49974 transitions. [2020-10-14 03:40:39,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:40:39,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 556 [2020-10-14 03:40:39,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:39,212 INFO L225 Difference]: With dead ends: 41481 [2020-10-14 03:40:39,212 INFO L226 Difference]: Without dead ends: 25119 [2020-10-14 03:40:39,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:40:39,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25119 states. [2020-10-14 03:40:39,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25119 to 23556. [2020-10-14 03:40:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23556 states. [2020-10-14 03:40:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23556 states to 23556 states and 28018 transitions. [2020-10-14 03:40:39,720 INFO L78 Accepts]: Start accepts. Automaton has 23556 states and 28018 transitions. Word has length 556 [2020-10-14 03:40:39,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:39,721 INFO L479 AbstractCegarLoop]: Abstraction has 23556 states and 28018 transitions. [2020-10-14 03:40:39,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:40:39,721 INFO L276 IsEmpty]: Start isEmpty. Operand 23556 states and 28018 transitions. [2020-10-14 03:40:39,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2020-10-14 03:40:39,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:39,738 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:40:39,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:40:39,739 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:39,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:39,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1119843703, now seen corresponding path program 1 times [2020-10-14 03:40:39,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:39,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302174093] [2020-10-14 03:40:39,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:39,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:40,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:40,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:41,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:42,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:42,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:43,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:43,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 578 [2020-10-14 03:40:43,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:40:43,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3141 [2020-10-14 03:40:43,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:43,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:43,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:43,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 537 [2020-10-14 03:40:43,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:40:43,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:43,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:43,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:43,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:43,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:43,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:43,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:40:43,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:43,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:43,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:43,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:43,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:43,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:43,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:40:43,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:43,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 03:40:43,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:43,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:43,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:43,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:40:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:43,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:43,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:43,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:40:43,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 03:40:43,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:43,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:43,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:40:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:43,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:43,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:43,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 03:40:43,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:43,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 03:40:43,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:43,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 03:40:43,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:40:43,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:43,558 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2020-10-14 03:40:43,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302174093] [2020-10-14 03:40:43,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:40:43,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:40:43,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137174442] [2020-10-14 03:40:43,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:40:43,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:43,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:40:43,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:40:43,560 INFO L87 Difference]: Start difference. First operand 23556 states and 28018 transitions. Second operand 5 states. [2020-10-14 03:40:52,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:52,120 INFO L93 Difference]: Finished difference Result 44596 states and 53379 transitions. [2020-10-14 03:40:52,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:40:52,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 564 [2020-10-14 03:40:52,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:52,185 INFO L225 Difference]: With dead ends: 44596 [2020-10-14 03:40:52,185 INFO L226 Difference]: Without dead ends: 23544 [2020-10-14 03:40:52,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:40:52,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23544 states. [2020-10-14 03:40:52,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23544 to 22915. [2020-10-14 03:40:52,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22915 states. [2020-10-14 03:40:52,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22915 states to 22915 states and 27270 transitions. [2020-10-14 03:40:52,645 INFO L78 Accepts]: Start accepts. Automaton has 22915 states and 27270 transitions. Word has length 564 [2020-10-14 03:40:52,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:52,646 INFO L479 AbstractCegarLoop]: Abstraction has 22915 states and 27270 transitions. [2020-10-14 03:40:52,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:40:52,646 INFO L276 IsEmpty]: Start isEmpty. Operand 22915 states and 27270 transitions. [2020-10-14 03:40:52,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2020-10-14 03:40:52,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:52,664 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:40:52,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:40:52,665 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:52,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:52,665 INFO L82 PathProgramCache]: Analyzing trace with hash -475276697, now seen corresponding path program 1 times [2020-10-14 03:40:52,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:52,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030411814] [2020-10-14 03:40:52,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:52,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:52,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:53,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:55,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:55,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:55,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:56,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:56,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:56,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:57,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:57,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 592 [2020-10-14 03:40:57,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 03:40:57,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 03:40:57,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:57,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 551 [2020-10-14 03:40:57,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:40:57,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:57,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:57,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:57,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:57,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:57,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:57,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:40:57,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:57,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:57,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:57,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:57,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:57,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:57,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:57,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:57,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:57,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:40:57,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:57,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 03:40:57,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:57,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:57,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:58,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:40:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:58,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:58,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:58,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:40:58,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:58,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 03:40:58,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:58,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:58,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:58,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:58,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:58,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:58,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-14 03:40:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:58,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:58,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:58,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 03:40:58,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:58,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 03:40:58,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:58,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:58,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:58,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 03:40:58,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:40:58,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:58,395 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2020-10-14 03:40:58,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030411814] [2020-10-14 03:40:58,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:40:58,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:40:58,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677317624] [2020-10-14 03:40:58,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:40:58,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:58,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:40:58,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:40:58,398 INFO L87 Difference]: Start difference. First operand 22915 states and 27270 transitions. Second operand 5 states. [2020-10-14 03:41:08,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:08,199 INFO L93 Difference]: Finished difference Result 51117 states and 61322 transitions. [2020-10-14 03:41:08,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:41:08,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 578 [2020-10-14 03:41:08,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:08,312 INFO L225 Difference]: With dead ends: 51117 [2020-10-14 03:41:08,312 INFO L226 Difference]: Without dead ends: 30706 [2020-10-14 03:41:08,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:41:08,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30706 states. [2020-10-14 03:41:08,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30706 to 29452. [2020-10-14 03:41:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29452 states. [2020-10-14 03:41:08,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29452 states to 29452 states and 34851 transitions. [2020-10-14 03:41:08,910 INFO L78 Accepts]: Start accepts. Automaton has 29452 states and 34851 transitions. Word has length 578 [2020-10-14 03:41:08,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:08,910 INFO L479 AbstractCegarLoop]: Abstraction has 29452 states and 34851 transitions. [2020-10-14 03:41:08,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:41:08,911 INFO L276 IsEmpty]: Start isEmpty. Operand 29452 states and 34851 transitions. [2020-10-14 03:41:08,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2020-10-14 03:41:08,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:08,946 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:41:08,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:41:08,946 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:08,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:08,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1372208059, now seen corresponding path program 1 times [2020-10-14 03:41:08,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:08,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964665655] [2020-10-14 03:41:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:09,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:09,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:09,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:13,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:14,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:14,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 692 [2020-10-14 03:41:14,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:41:14,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 03:41:14,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:14,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 414 [2020-10-14 03:41:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 03:41:14,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:14,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:14,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:14,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:14,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:14,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:14,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:41:14,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:14,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:14,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:14,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:14,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:14,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:14,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:14,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:14,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:41:14,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:14,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 03:41:14,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:14,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:14,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:14,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:41:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:14,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:14,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:14,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 03:41:14,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:14,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 03:41:14,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:14,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:14,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 03:41:14,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:14,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-14 03:41:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:14,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:14,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:14,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:41:14,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:14,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 03:41:14,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:14,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:14,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:14,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:14,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:41:14,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:14,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-14 03:41:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:14,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:14,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:14,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 03:41:14,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:14,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 03:41:14,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:14,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 03:41:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:14,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 377 proven. 111 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2020-10-14 03:41:15,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964665655] [2020-10-14 03:41:15,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:15,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:41:15,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572891291] [2020-10-14 03:41:15,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:41:15,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:15,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:41:15,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:41:15,103 INFO L87 Difference]: Start difference. First operand 29452 states and 34851 transitions. Second operand 7 states. [2020-10-14 03:41:23,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:23,393 INFO L93 Difference]: Finished difference Result 60812 states and 72550 transitions. [2020-10-14 03:41:23,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:41:23,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 676 [2020-10-14 03:41:23,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:23,527 INFO L225 Difference]: With dead ends: 60812 [2020-10-14 03:41:23,528 INFO L226 Difference]: Without dead ends: 34171 [2020-10-14 03:41:23,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 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 03:41:23,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34171 states. [2020-10-14 03:41:24,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34171 to 33526. [2020-10-14 03:41:24,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33526 states. [2020-10-14 03:41:24,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33526 states to 33526 states and 39950 transitions. [2020-10-14 03:41:24,260 INFO L78 Accepts]: Start accepts. Automaton has 33526 states and 39950 transitions. Word has length 676 [2020-10-14 03:41:24,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:24,261 INFO L479 AbstractCegarLoop]: Abstraction has 33526 states and 39950 transitions. [2020-10-14 03:41:24,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:41:24,261 INFO L276 IsEmpty]: Start isEmpty. Operand 33526 states and 39950 transitions. [2020-10-14 03:41:24,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2020-10-14 03:41:24,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:24,286 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:41:24,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:41:24,286 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:24,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:24,287 INFO L82 PathProgramCache]: Analyzing trace with hash 124290000, now seen corresponding path program 1 times [2020-10-14 03:41:24,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:24,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456610891] [2020-10-14 03:41:24,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:24,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:24,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:25,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:27,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:28,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:29,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:29,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:29,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 692 [2020-10-14 03:41:29,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:41:29,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 03:41:29,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:29,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:41:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 03:41:29,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:29,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:29,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:29,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:29,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:29,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:29,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:41:29,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:29,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:29,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:29,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:29,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:29,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:29,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:41:29,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:29,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 03:41:29,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:29,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:29,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:29,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:29,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:29,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:29,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:41:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:29,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:30,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:30,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:41:30,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:30,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 03:41:30,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:30,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:30,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:30,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:30,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:41:30,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:30,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:41:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:30,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:30,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:30,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 03:41:30,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:30,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 03:41:30,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:30,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 03:41:30,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:30,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-14 03:41:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:30,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:30,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:30,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 03:41:30,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:30,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 03:41:30,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:30,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:30,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:30,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 03:41:30,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:30,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:30,658 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 372 proven. 111 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2020-10-14 03:41:30,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456610891] [2020-10-14 03:41:30,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:30,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:41:30,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828810648] [2020-10-14 03:41:30,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:41:30,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:30,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:41:30,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:41:30,660 INFO L87 Difference]: Start difference. First operand 33526 states and 39950 transitions. Second operand 7 states. [2020-10-14 03:41:43,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:43,272 INFO L93 Difference]: Finished difference Result 71201 states and 85811 transitions. [2020-10-14 03:41:43,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:41:43,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 676 [2020-10-14 03:41:43,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:43,378 INFO L225 Difference]: With dead ends: 71201 [2020-10-14 03:41:43,378 INFO L226 Difference]: Without dead ends: 36413 [2020-10-14 03:41:43,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:41:43,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36413 states. [2020-10-14 03:41:44,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36413 to 36294. [2020-10-14 03:41:44,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36294 states. [2020-10-14 03:41:44,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36294 states to 36294 states and 42414 transitions. [2020-10-14 03:41:44,291 INFO L78 Accepts]: Start accepts. Automaton has 36294 states and 42414 transitions. Word has length 676 [2020-10-14 03:41:44,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:44,293 INFO L479 AbstractCegarLoop]: Abstraction has 36294 states and 42414 transitions. [2020-10-14 03:41:44,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:41:44,293 INFO L276 IsEmpty]: Start isEmpty. Operand 36294 states and 42414 transitions. [2020-10-14 03:41:44,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2020-10-14 03:41:44,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:44,340 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:41:44,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 03:41:44,341 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:44,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:44,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1262876861, now seen corresponding path program 1 times [2020-10-14 03:41:44,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:44,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750074381] [2020-10-14 03:41:44,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:44,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:44,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:45,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:45,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:49,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:49,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 708 [2020-10-14 03:41:49,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:41:49,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 03:41:49,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:49,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 462 [2020-10-14 03:41:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 03:41:49,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:49,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:49,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:49,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:49,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:49,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:49,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:41:49,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:49,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:49,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:49,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:49,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:49,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:49,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:49,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:41:49,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:49,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 03:41:49,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:49,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:49,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:49,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:49,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:49,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:49,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:41:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:49,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:49,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:49,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:41:49,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:49,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 03:41:49,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:49,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:49,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:49,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:49,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:49,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:49,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-14 03:41:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:49,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:49,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:49,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:41:49,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:49,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 03:41:49,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:49,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:49,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:49,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:49,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:41:49,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:49,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2020-10-14 03:41:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:49,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:49,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:49,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:49,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:41:49,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:41:49,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 03:41:49,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:49,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 03:41:49,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:50,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-10-14 03:41:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:50,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:50,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:50,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 03:41:50,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:50,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 03:41:50,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:50,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:50,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:50,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 03:41:50,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:50,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 431 proven. 88 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2020-10-14 03:41:50,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750074381] [2020-10-14 03:41:50,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:50,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:41:50,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878301202] [2020-10-14 03:41:50,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:41:50,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:50,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:41:50,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:41:50,508 INFO L87 Difference]: Start difference. First operand 36294 states and 42414 transitions. Second operand 7 states.