/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:06:03,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:06:03,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:06:03,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:06:03,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:06:03,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:06:03,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:06:03,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:06:03,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:06:03,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:06:03,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:06:03,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:06:03,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:06:03,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:06:03,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:06:03,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:06:03,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:06:03,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:06:03,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:06:03,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:06:03,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:06:03,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:06:03,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:06:03,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:06:03,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:06:03,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:06:03,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:06:03,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:06:03,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:06:03,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:06:03,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:06:03,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:06:03,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:06:03,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:06:03,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:06:03,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:06:03,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:06:03,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:06:03,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:06:03,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:06:03,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:06:03,695 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 22:06:03,719 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:06:03,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:06:03,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:06:03,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:06:03,722 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:06:03,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:06:03,722 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:06:03,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:06:03,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:06:03,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:06:03,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:06:03,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:06:03,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:06:03,723 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:06:03,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:06:03,724 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:06:03,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:06:03,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:06:03,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:06:03,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:06:03,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:06:03,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:06:03,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:06:03,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:06:03,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:06:03,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:06:03,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:06:03,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:06:03,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:06:03,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:06:04,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:06:04,102 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:06:04,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:06:04,109 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:06:04,109 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:06:04,110 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label56.c [2020-10-14 22:06:04,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8433c84bf/19962a2795534894a3ba5eb5e8571559/FLAG9ed1d3c6b [2020-10-14 22:06:04,896 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:06:04,897 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label56.c [2020-10-14 22:06:04,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8433c84bf/19962a2795534894a3ba5eb5e8571559/FLAG9ed1d3c6b [2020-10-14 22:06:05,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8433c84bf/19962a2795534894a3ba5eb5e8571559 [2020-10-14 22:06:05,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:06:05,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:06:05,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:06:05,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:06:05,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:06:05,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:06:05" (1/1) ... [2020-10-14 22:06:05,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a2ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:05, skipping insertion in model container [2020-10-14 22:06:05,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:06:05" (1/1) ... [2020-10-14 22:06:05,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:06:05,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:06:06,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:06:06,119 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:06:06,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:06:06,673 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:06:06,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:06 WrapperNode [2020-10-14 22:06:06,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:06:06,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:06:06,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:06:06,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:06:06,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:06" (1/1) ... [2020-10-14 22:06:06,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:06" (1/1) ... [2020-10-14 22:06:06,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:06" (1/1) ... [2020-10-14 22:06:06,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:06" (1/1) ... [2020-10-14 22:06:06,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:06" (1/1) ... [2020-10-14 22:06:06,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:06" (1/1) ... [2020-10-14 22:06:06,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:06" (1/1) ... [2020-10-14 22:06:06,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:06:06,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:06:06,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:06:06,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:06:06,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:06:06,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:06:06,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:06:06,993 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:06:06,993 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:06:06,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:06:06,995 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:06:06,995 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:06:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:06:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:06:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:06:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:06:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:06:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:06:13,690 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:06:13,690 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:06:13,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:06:13 BoogieIcfgContainer [2020-10-14 22:06:13,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:06:13,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:06:13,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:06:13,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:06:13,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:06:05" (1/3) ... [2020-10-14 22:06:13,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b2e872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:06:13, skipping insertion in model container [2020-10-14 22:06:13,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:06" (2/3) ... [2020-10-14 22:06:13,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b2e872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:06:13, skipping insertion in model container [2020-10-14 22:06:13,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:06:13" (3/3) ... [2020-10-14 22:06:13,710 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label56.c [2020-10-14 22:06:13,722 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:06:13,732 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:06:13,748 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:06:13,783 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:06:13,784 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:06:13,784 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:06:13,784 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:06:13,784 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:06:13,784 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:06:13,785 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:06:13,785 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:06:13,817 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 22:06:13,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 22:06:13,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:13,827 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 22:06:13,828 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:13,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:13,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2075233339, now seen corresponding path program 1 times [2020-10-14 22:06:13,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:13,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633862006] [2020-10-14 22:06:13,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:14,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:14,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:14,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 22:06:14,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:14,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-14 22:06:14,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:14,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:14,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:06:14,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:06:14,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 22:06:14,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:06:14,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:14,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:14,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:14,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:14,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:14,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 22:06:14,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:14,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:14,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:14,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:14,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:06:14,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:14,785 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 22:06:14,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633862006] [2020-10-14 22:06:14,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:06:14,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 22:06:14,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462740367] [2020-10-14 22:06:14,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:06:14,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:14,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:06:14,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:06:14,823 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 5 states. [2020-10-14 22:06:24,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:24,201 INFO L93 Difference]: Finished difference Result 1517 states and 2786 transitions. [2020-10-14 22:06:24,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:06:24,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-14 22:06:24,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:24,228 INFO L225 Difference]: With dead ends: 1517 [2020-10-14 22:06:24,228 INFO L226 Difference]: Without dead ends: 1010 [2020-10-14 22:06:24,240 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 22:06:24,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-14 22:06:24,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1000. [2020-10-14 22:06:24,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-10-14 22:06:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1378 transitions. [2020-10-14 22:06:24,361 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1378 transitions. Word has length 39 [2020-10-14 22:06:24,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:24,362 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1378 transitions. [2020-10-14 22:06:24,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:06:24,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1378 transitions. [2020-10-14 22:06:24,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 22:06:24,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:24,367 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 22:06:24,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:06:24,368 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:24,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:24,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1497947422, now seen corresponding path program 1 times [2020-10-14 22:06:24,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:24,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662859077] [2020-10-14 22:06:24,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:24,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:24,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:26,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:26,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 22:06:26,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:06:26,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1809 [2020-10-14 22:06:26,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:26,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:26,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:06:26,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:06:26,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:06:26,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:06:26,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:26,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:26,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:26,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:26,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:26,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:06:26,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:26,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:26,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:06:26,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:06:26,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:26,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:26,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:26,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:06:26,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:26,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-14 22:06:26,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:26,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:06:26,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 22:06:26,747 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 22:06:26,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662859077] [2020-10-14 22:06:26,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:06:26,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:06:26,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421704286] [2020-10-14 22:06:26,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:06:26,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:26,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:06:26,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:06:26,754 INFO L87 Difference]: Start difference. First operand 1000 states and 1378 transitions. Second operand 7 states. [2020-10-14 22:06:35,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:35,128 INFO L93 Difference]: Finished difference Result 2334 states and 3156 transitions. [2020-10-14 22:06:35,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:06:35,129 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-14 22:06:35,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:35,139 INFO L225 Difference]: With dead ends: 2334 [2020-10-14 22:06:35,140 INFO L226 Difference]: Without dead ends: 1340 [2020-10-14 22:06:35,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:06:35,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2020-10-14 22:06:35,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1323. [2020-10-14 22:06:35,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1323 states. [2020-10-14 22:06:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1733 transitions. [2020-10-14 22:06:35,204 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1733 transitions. Word has length 108 [2020-10-14 22:06:35,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:35,204 INFO L479 AbstractCegarLoop]: Abstraction has 1323 states and 1733 transitions. [2020-10-14 22:06:35,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:06:35,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1733 transitions. [2020-10-14 22:06:35,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 22:06:35,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:35,210 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] [2020-10-14 22:06:35,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:06:35,210 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:35,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:35,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1990585805, now seen corresponding path program 1 times [2020-10-14 22:06:35,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:35,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037967498] [2020-10-14 22:06:35,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:35,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:35,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:36,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:36,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:06:36,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:06:36,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-10-14 22:06:36,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:36,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:36,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:06:36,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:06:36,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 22:06:36,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:36,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:36,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:36,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:36,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:36,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:36,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 22:06:36,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:36,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:36,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:36,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:36,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:06:36,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:36,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:36,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:36,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:36,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:06:36,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:36,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 22:06:36,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:36,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:36,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:36,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:36,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:06:36,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:36,469 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 22:06:36,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037967498] [2020-10-14 22:06:36,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:06:36,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:06:36,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983110352] [2020-10-14 22:06:36,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:06:36,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:36,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:06:36,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:06:36,476 INFO L87 Difference]: Start difference. First operand 1323 states and 1733 transitions. Second operand 7 states. [2020-10-14 22:06:44,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:44,511 INFO L93 Difference]: Finished difference Result 3007 states and 4137 transitions. [2020-10-14 22:06:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:06:44,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-10-14 22:06:44,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:44,527 INFO L225 Difference]: With dead ends: 3007 [2020-10-14 22:06:44,527 INFO L226 Difference]: Without dead ends: 1997 [2020-10-14 22:06:44,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 22:06:44,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2020-10-14 22:06:44,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1955. [2020-10-14 22:06:44,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1955 states. [2020-10-14 22:06:44,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 2424 transitions. [2020-10-14 22:06:44,597 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 2424 transitions. Word has length 113 [2020-10-14 22:06:44,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:44,598 INFO L479 AbstractCegarLoop]: Abstraction has 1955 states and 2424 transitions. [2020-10-14 22:06:44,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:06:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 2424 transitions. [2020-10-14 22:06:44,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 22:06:44,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:44,603 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, 1, 1, 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 22:06:44,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:06:44,604 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:44,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:44,604 INFO L82 PathProgramCache]: Analyzing trace with hash -311064930, now seen corresponding path program 1 times [2020-10-14 22:06:44,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:44,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033631407] [2020-10-14 22:06:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:44,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:44,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:45,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:45,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:46,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:46,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:49,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:49,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-14 22:06:49,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:06:49,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4497 [2020-10-14 22:06:49,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:49,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:49,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:06:49,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:06:49,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 22:06:49,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:49,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:49,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:49,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:49,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:49,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:49,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:06:49,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:49,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:49,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:49,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:49,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:06:49,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:49,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:49,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:49,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:49,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:06:49,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:49,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 22:06:49,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:49,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 22:06:49,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:49,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:06:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:49,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:49,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:49,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 22:06:49,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:49,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 22:06:49,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:49,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:49,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:49,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:49,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 22:06:49,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:06:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 22:06:49,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033631407] [2020-10-14 22:06:49,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:06:49,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:06:49,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182321161] [2020-10-14 22:06:49,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:06:49,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:49,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:06:49,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:06:49,855 INFO L87 Difference]: Start difference. First operand 1955 states and 2424 transitions. Second operand 7 states. [2020-10-14 22:06:57,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:57,561 INFO L93 Difference]: Finished difference Result 4311 states and 5594 transitions. [2020-10-14 22:06:57,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:06:57,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-14 22:06:57,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:57,586 INFO L225 Difference]: With dead ends: 4311 [2020-10-14 22:06:57,586 INFO L226 Difference]: Without dead ends: 2980 [2020-10-14 22:06:57,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 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 22:06:57,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2020-10-14 22:06:57,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 2908. [2020-10-14 22:06:57,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2908 states. [2020-10-14 22:06:57,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 3510 transitions. [2020-10-14 22:06:57,673 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 3510 transitions. Word has length 213 [2020-10-14 22:06:57,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:57,674 INFO L479 AbstractCegarLoop]: Abstraction has 2908 states and 3510 transitions. [2020-10-14 22:06:57,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:06:57,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 3510 transitions. [2020-10-14 22:06:57,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-14 22:06:57,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:57,681 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:57,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:06:57,681 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:57,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:57,682 INFO L82 PathProgramCache]: Analyzing trace with hash 52374044, now seen corresponding path program 1 times [2020-10-14 22:06:57,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:57,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80511490] [2020-10-14 22:06:57,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:57,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:58,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:58,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:02,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:02,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-14 22:07:02,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:07:02,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 22:07:02,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:02,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:02,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:07:02,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:07:02,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 22:07:02,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:07:02,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:07:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:02,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:02,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:02,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:07:02,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:02,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:07:02,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:02,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:07:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:07:02,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 22:07:02,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:07:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:03,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:03,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:03,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:07:03,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:03,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-14 22:07:03,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:03,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:07:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:07:03,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:07:03,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 22:07:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:03,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:03,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:03,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 22:07:03,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:03,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 22:07:03,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:03,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 22:07:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:03,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:07:04,136 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 64 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:07:04,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80511490] [2020-10-14 22:07:04,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:07:04,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:07:04,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993948779] [2020-10-14 22:07:04,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:07:04,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:07:04,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:07:04,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:07:04,141 INFO L87 Difference]: Start difference. First operand 2908 states and 3510 transitions. Second operand 7 states. [2020-10-14 22:07:13,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:07:13,609 INFO L93 Difference]: Finished difference Result 5571 states and 6778 transitions. [2020-10-14 22:07:13,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:07:13,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2020-10-14 22:07:13,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:07:13,628 INFO L225 Difference]: With dead ends: 5571 [2020-10-14 22:07:13,628 INFO L226 Difference]: Without dead ends: 2976 [2020-10-14 22:07:13,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:07:13,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-10-14 22:07:13,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 2912. [2020-10-14 22:07:13,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2912 states. [2020-10-14 22:07:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 3510 transitions. [2020-10-14 22:07:13,711 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 3510 transitions. Word has length 319 [2020-10-14 22:07:13,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:07:13,712 INFO L479 AbstractCegarLoop]: Abstraction has 2912 states and 3510 transitions. [2020-10-14 22:07:13,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:07:13,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 3510 transitions. [2020-10-14 22:07:13,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-14 22:07:13,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:07:13,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:07:13,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:07:13,719 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:07:13,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:07:13,720 INFO L82 PathProgramCache]: Analyzing trace with hash 570887527, now seen corresponding path program 1 times [2020-10-14 22:07:13,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:07:13,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177642803] [2020-10-14 22:07:13,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:07:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:13,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:13,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:14,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:15,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:16,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:16,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:16,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-14 22:07:16,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:07:16,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3114 [2020-10-14 22:07:16,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:16,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:16,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 22:07:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:07:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 340 [2020-10-14 22:07:16,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:07:17,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:07:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:17,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:17,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:17,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:07:17,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:17,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:07:17,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:17,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:07:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:07:17,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:07:17,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:07:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:17,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:17,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:17,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:17,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:07:17,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:07:17,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 22:07:17,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:17,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:17,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:07:17,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:17,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:07:17,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:07:17,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:07:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:17,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:17,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:18,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:18,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:07:18,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:07:18,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-10-14 22:07:18,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:18,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:07:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 22:07:18,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:07:18,730 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 22:07:18,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177642803] [2020-10-14 22:07:18,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:07:18,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:07:18,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693112003] [2020-10-14 22:07:18,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:07:18,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:07:18,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:07:18,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:07:18,736 INFO L87 Difference]: Start difference. First operand 2912 states and 3510 transitions. Second operand 7 states. [2020-10-14 22:07:32,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:07:32,276 INFO L93 Difference]: Finished difference Result 7104 states and 9004 transitions. [2020-10-14 22:07:32,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:07:32,277 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 334 [2020-10-14 22:07:32,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:07:32,300 INFO L225 Difference]: With dead ends: 7104 [2020-10-14 22:07:32,300 INFO L226 Difference]: Without dead ends: 4816 [2020-10-14 22:07:32,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:07:32,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4816 states. [2020-10-14 22:07:32,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4816 to 4165. [2020-10-14 22:07:32,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4165 states. [2020-10-14 22:07:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 5215 transitions. [2020-10-14 22:07:32,415 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 5215 transitions. Word has length 334 [2020-10-14 22:07:32,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:07:32,416 INFO L479 AbstractCegarLoop]: Abstraction has 4165 states and 5215 transitions. [2020-10-14 22:07:32,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:07:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 5215 transitions. [2020-10-14 22:07:32,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-10-14 22:07:32,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:07:32,425 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] [2020-10-14 22:07:32,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:07:32,425 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:07:32,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:07:32,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1420395052, now seen corresponding path program 1 times [2020-10-14 22:07:32,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:07:32,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739600880] [2020-10-14 22:07:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:07:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:32,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:33,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:33,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:34,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:34,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-14 22:07:34,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:07:34,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1831 [2020-10-14 22:07:34,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:34,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:07:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 22:07:34,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:07:34,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:07:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:34,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:34,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:34,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:07:34,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:34,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:07:34,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:34,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:34,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:34,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:34,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:34,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:07:34,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:07:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:34,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:34,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:34,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:07:34,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:34,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-14 22:07:34,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:34,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:34,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:07:34,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:34,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:07:34,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:07:34,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:07:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:35,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:35,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:35,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:07:35,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:35,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 22:07:35,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:35,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:35,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:35,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:07:35,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:07:35,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:35,326 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 22:07:35,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739600880] [2020-10-14 22:07:35,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:07:35,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:07:35,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112839557] [2020-10-14 22:07:35,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:07:35,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:07:35,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:07:35,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:07:35,329 INFO L87 Difference]: Start difference. First operand 4165 states and 5215 transitions. Second operand 7 states. [2020-10-14 22:07:46,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:07:46,210 INFO L93 Difference]: Finished difference Result 10929 states and 14169 transitions. [2020-10-14 22:07:46,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:07:46,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 409 [2020-10-14 22:07:46,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:07:46,251 INFO L225 Difference]: With dead ends: 10929 [2020-10-14 22:07:46,252 INFO L226 Difference]: Without dead ends: 7077 [2020-10-14 22:07:46,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 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 22:07:46,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7077 states. [2020-10-14 22:07:46,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7077 to 6092. [2020-10-14 22:07:46,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6092 states. [2020-10-14 22:07:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6092 states to 6092 states and 7376 transitions. [2020-10-14 22:07:46,466 INFO L78 Accepts]: Start accepts. Automaton has 6092 states and 7376 transitions. Word has length 409 [2020-10-14 22:07:46,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:07:46,468 INFO L479 AbstractCegarLoop]: Abstraction has 6092 states and 7376 transitions. [2020-10-14 22:07:46,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:07:46,468 INFO L276 IsEmpty]: Start isEmpty. Operand 6092 states and 7376 transitions. [2020-10-14 22:07:46,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-14 22:07:46,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:07:46,479 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, 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] [2020-10-14 22:07:46,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:07:46,479 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:07:46,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:07:46,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1318349666, now seen corresponding path program 1 times [2020-10-14 22:07:46,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:07:46,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378906792] [2020-10-14 22:07:46,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:07:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:46,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:46,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:47,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:47,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:48,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:50,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:50,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:50,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-14 22:07:50,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:07:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4243 [2020-10-14 22:07:50,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:50,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:07:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 22:07:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-14 22:07:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:50,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:07:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:50,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:50,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:50,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:07:50,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:50,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:07:50,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:50,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:07:50,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:50,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:07:50,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:07:50,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:07:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:51,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:51,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:51,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:07:51,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 22:07:51,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:51,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:07:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:07:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:07:51,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:07:51,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:07:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:51,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:51,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:51,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:51,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:07:51,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:07:51,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-14 22:07:51,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:51,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:07:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:07:51,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:07:51,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 22:07:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:51,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:51,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:07:51,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:07:51,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:07:51,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 22:07:51,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:07:51,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:07:51,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:07:51,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:07:51,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:07:51,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:07:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 369 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 22:07:52,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378906792] [2020-10-14 22:07:52,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:07:52,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:07:52,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118967616] [2020-10-14 22:07:52,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:07:52,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:07:52,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:07:52,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:07:52,131 INFO L87 Difference]: Start difference. First operand 6092 states and 7376 transitions. Second operand 8 states. [2020-10-14 22:08:05,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:08:05,643 INFO L93 Difference]: Finished difference Result 13276 states and 16867 transitions. [2020-10-14 22:08:05,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:08:05,646 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 430 [2020-10-14 22:08:05,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:08:05,682 INFO L225 Difference]: With dead ends: 13276 [2020-10-14 22:08:05,682 INFO L226 Difference]: Without dead ends: 7146 [2020-10-14 22:08:05,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:08:05,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7146 states. [2020-10-14 22:08:05,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7146 to 7057. [2020-10-14 22:08:05,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7057 states. [2020-10-14 22:08:05,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7057 states to 7057 states and 8191 transitions. [2020-10-14 22:08:05,895 INFO L78 Accepts]: Start accepts. Automaton has 7057 states and 8191 transitions. Word has length 430 [2020-10-14 22:08:05,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:08:05,896 INFO L479 AbstractCegarLoop]: Abstraction has 7057 states and 8191 transitions. [2020-10-14 22:08:05,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:08:05,896 INFO L276 IsEmpty]: Start isEmpty. Operand 7057 states and 8191 transitions. [2020-10-14 22:08:05,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-10-14 22:08:05,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:05,910 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, 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 22:08:05,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:08:05,911 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:05,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:05,911 INFO L82 PathProgramCache]: Analyzing trace with hash -178499610, now seen corresponding path program 1 times [2020-10-14 22:08:05,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:05,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115944838] [2020-10-14 22:08:05,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:06,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:06,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:07,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:07,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:11,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:11,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 531 [2020-10-14 22:08:11,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:08:11,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 22:08:11,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:11,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:11,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:11,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:08:11,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 22:08:11,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:11,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:08:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:11,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:11,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:11,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:08:11,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:11,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:08:11,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:11,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:11,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:08:11,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:11,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:08:11,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:11,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:08:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:11,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:11,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:11,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:08:11,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:11,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 22:08:11,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:11,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:11,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:08:11,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:11,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:08:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:11,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:08:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:11,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:11,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:11,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:08:11,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:11,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 22:08:11,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:11,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:11,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:11,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:08:11,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:08:11,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:11,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 22:08:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:11,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:11,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:11,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 22:08:11,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:11,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 22:08:11,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:11,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:11,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:08:11,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 22:08:11,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:08:11,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:12,166 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 208 proven. 92 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-14 22:08:12,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115944838] [2020-10-14 22:08:12,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:08:12,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:08:12,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835774476] [2020-10-14 22:08:12,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:08:12,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:08:12,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:08:12,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:08:12,169 INFO L87 Difference]: Start difference. First operand 7057 states and 8191 transitions. Second operand 7 states. [2020-10-14 22:08:20,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:08:20,420 INFO L93 Difference]: Finished difference Result 15410 states and 17809 transitions. [2020-10-14 22:08:20,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:08:20,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 517 [2020-10-14 22:08:20,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:08:20,453 INFO L225 Difference]: With dead ends: 15410 [2020-10-14 22:08:20,453 INFO L226 Difference]: Without dead ends: 8666 [2020-10-14 22:08:20,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:08:20,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8666 states. [2020-10-14 22:08:20,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8666 to 8313. [2020-10-14 22:08:20,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8313 states. [2020-10-14 22:08:20,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8313 states to 8313 states and 9420 transitions. [2020-10-14 22:08:20,685 INFO L78 Accepts]: Start accepts. Automaton has 8313 states and 9420 transitions. Word has length 517 [2020-10-14 22:08:20,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:08:20,686 INFO L479 AbstractCegarLoop]: Abstraction has 8313 states and 9420 transitions. [2020-10-14 22:08:20,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:08:20,687 INFO L276 IsEmpty]: Start isEmpty. Operand 8313 states and 9420 transitions. [2020-10-14 22:08:20,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-10-14 22:08:20,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:20,707 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, 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 22:08:20,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:08:20,708 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:20,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:20,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1050217442, now seen corresponding path program 1 times [2020-10-14 22:08:20,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:20,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607257286] [2020-10-14 22:08:20,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:20,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:21,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:22,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:22,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:22,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 543 [2020-10-14 22:08:22,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:08:22,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2114 [2020-10-14 22:08:22,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:22,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:22,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:08:22,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:08:22,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 22:08:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:23,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:08:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:23,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:23,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:23,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:08:23,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:08:23,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:23,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:23,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:08:23,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:23,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:08:23,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:23,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:08:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:23,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:23,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:23,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:08:23,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:23,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:08:23,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:23,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:08:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:08:23,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:23,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:08:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:23,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:23,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:23,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:08:23,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:23,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 22:08:23,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:23,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:08:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:23,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:08:23,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:23,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:08:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:23,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:23,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:23,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:23,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 22:08:23,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:08:23,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 22:08:23,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:23,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:23,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:23,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:08:23,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 22:08:23,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 246 proven. 33 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-14 22:08:23,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607257286] [2020-10-14 22:08:23,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:08:23,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:08:23,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986846688] [2020-10-14 22:08:23,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:08:23,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:08:23,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:08:23,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:08:23,761 INFO L87 Difference]: Start difference. First operand 8313 states and 9420 transitions. Second operand 6 states. [2020-10-14 22:08:30,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:08:30,730 INFO L93 Difference]: Finished difference Result 17608 states and 20554 transitions. [2020-10-14 22:08:30,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:08:30,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 529 [2020-10-14 22:08:30,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:08:30,759 INFO L225 Difference]: With dead ends: 17608 [2020-10-14 22:08:30,760 INFO L226 Difference]: Without dead ends: 9595 [2020-10-14 22:08:30,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:08:30,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9595 states. [2020-10-14 22:08:30,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9595 to 9259. [2020-10-14 22:08:30,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9259 states. [2020-10-14 22:08:30,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9259 states to 9259 states and 10486 transitions. [2020-10-14 22:08:30,958 INFO L78 Accepts]: Start accepts. Automaton has 9259 states and 10486 transitions. Word has length 529 [2020-10-14 22:08:30,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:08:30,960 INFO L479 AbstractCegarLoop]: Abstraction has 9259 states and 10486 transitions. [2020-10-14 22:08:30,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:08:30,960 INFO L276 IsEmpty]: Start isEmpty. Operand 9259 states and 10486 transitions. [2020-10-14 22:08:30,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2020-10-14 22:08:30,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:30,981 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, 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 22:08:30,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:08:30,982 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:30,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:30,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1291232118, now seen corresponding path program 1 times [2020-10-14 22:08:30,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:30,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460882517] [2020-10-14 22:08:30,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:31,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:31,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:32,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:32,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 556 [2020-10-14 22:08:32,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:08:32,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1863 [2020-10-14 22:08:32,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:32,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:08:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 22:08:32,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:33,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:08:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:33,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:33,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:33,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:08:33,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:33,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:08:33,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:33,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:33,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:08:33,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:33,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:08:33,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:33,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:08:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:33,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:33,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:33,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:08:33,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:33,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:08:33,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:33,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:33,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:08:33,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:33,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:08:33,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:33,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:08:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:33,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:33,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:33,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:08:33,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:33,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 22:08:33,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:33,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:33,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:08:33,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:33,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:08:33,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:33,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:08:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:33,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:33,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:33,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 22:08:33,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:33,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 22:08:33,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:33,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:33,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:08:33,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 22:08:33,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 307 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:08:33,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460882517] [2020-10-14 22:08:33,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:08:33,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:08:33,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247641446] [2020-10-14 22:08:33,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:08:33,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:08:33,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:08:33,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:08:33,812 INFO L87 Difference]: Start difference. First operand 9259 states and 10486 transitions. Second operand 8 states. [2020-10-14 22:08:46,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:08:46,293 INFO L93 Difference]: Finished difference Result 24471 states and 29316 transitions. [2020-10-14 22:08:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:08:46,296 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 542 [2020-10-14 22:08:46,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:08:46,364 INFO L225 Difference]: With dead ends: 24471 [2020-10-14 22:08:46,364 INFO L226 Difference]: Without dead ends: 15525 [2020-10-14 22:08:46,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 22:08:46,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15525 states. [2020-10-14 22:08:46,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15525 to 14895. [2020-10-14 22:08:46,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14895 states. [2020-10-14 22:08:46,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14895 states to 14895 states and 17680 transitions. [2020-10-14 22:08:46,727 INFO L78 Accepts]: Start accepts. Automaton has 14895 states and 17680 transitions. Word has length 542 [2020-10-14 22:08:46,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:08:46,728 INFO L479 AbstractCegarLoop]: Abstraction has 14895 states and 17680 transitions. [2020-10-14 22:08:46,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:08:46,729 INFO L276 IsEmpty]: Start isEmpty. Operand 14895 states and 17680 transitions. [2020-10-14 22:08:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2020-10-14 22:08:46,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:46,738 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, 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] [2020-10-14 22:08:46,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:08:46,739 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:46,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:46,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1813164770, now seen corresponding path program 1 times [2020-10-14 22:08:46,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:46,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351973049] [2020-10-14 22:08:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:47,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:47,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:48,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:50,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:50,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 578 [2020-10-14 22:08:50,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:08:50,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3389 [2020-10-14 22:08:50,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:50,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:50,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:50,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:08:50,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 22:08:50,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:50,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:08:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:50,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:50,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:50,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:08:50,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:50,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:08:50,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:50,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:50,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:08:50,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:50,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:08:50,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:50,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:08:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:50,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:50,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:50,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:08:50,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:50,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 22:08:50,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:50,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:50,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:08:50,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:50,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:08:50,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:50,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:08:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:50,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:50,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:50,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:08:50,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 22:08:50,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:50,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:08:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:08:50,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:50,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:08:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:50,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:50,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:50,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 22:08:50,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:50,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 22:08:50,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:50,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:08:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 22:08:50,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:08:51,134 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:08:51,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351973049] [2020-10-14 22:08:51,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:08:51,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:08:51,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508618888] [2020-10-14 22:08:51,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:08:51,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:08:51,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:08:51,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:08:51,137 INFO L87 Difference]: Start difference. First operand 14895 states and 17680 transitions. Second operand 7 states. [2020-10-14 22:08:59,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:08:59,312 INFO L93 Difference]: Finished difference Result 30705 states and 37336 transitions. [2020-10-14 22:08:59,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:08:59,314 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 564 [2020-10-14 22:08:59,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:08:59,360 INFO L225 Difference]: With dead ends: 30705 [2020-10-14 22:08:59,360 INFO L226 Difference]: Without dead ends: 17673 [2020-10-14 22:08:59,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 22:08:59,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17673 states. [2020-10-14 22:08:59,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17673 to 16126. [2020-10-14 22:08:59,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16126 states. [2020-10-14 22:08:59,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16126 states to 16126 states and 19506 transitions. [2020-10-14 22:08:59,696 INFO L78 Accepts]: Start accepts. Automaton has 16126 states and 19506 transitions. Word has length 564 [2020-10-14 22:08:59,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:08:59,697 INFO L479 AbstractCegarLoop]: Abstraction has 16126 states and 19506 transitions. [2020-10-14 22:08:59,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:08:59,698 INFO L276 IsEmpty]: Start isEmpty. Operand 16126 states and 19506 transitions. [2020-10-14 22:08:59,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2020-10-14 22:08:59,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:59,718 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:59,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:08:59,719 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:59,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:59,719 INFO L82 PathProgramCache]: Analyzing trace with hash -2049325742, now seen corresponding path program 1 times [2020-10-14 22:08:59,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:59,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186825257] [2020-10-14 22:08:59,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:59,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:00,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:00,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:05,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:05,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 742 [2020-10-14 22:09:05,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:09:05,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-14 22:09:05,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:05,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:05,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 573 [2020-10-14 22:09:05,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 22:09:05,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:05,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:09:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:05,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:05,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:05,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:09:05,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:05,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:09:05,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:05,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:05,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:09:05,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:09:05,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:05,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:09:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:05,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:05,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:05,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:09:05,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:05,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 22:09:05,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:05,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:09:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:09:05,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:05,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:09:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:05,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:05,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:05,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 22:09:05,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:05,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 22:09:05,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:05,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:05,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:09:05,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:05,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:09:05,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:05,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-14 22:09:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:05,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:05,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:05,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 22:09:05,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:05,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 22:09:05,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:05,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:05,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:05,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:05,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:09:05,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:05,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-14 22:09:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:05,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:05,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:05,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 22:09:05,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:05,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 22:09:05,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:05,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:09:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 22:09:05,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:06,195 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 465 proven. 2 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2020-10-14 22:09:06,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186825257] [2020-10-14 22:09:06,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:09:06,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:09:06,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007901717] [2020-10-14 22:09:06,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:09:06,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:09:06,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:09:06,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:09:06,197 INFO L87 Difference]: Start difference. First operand 16126 states and 19506 transitions. Second operand 7 states. [2020-10-14 22:09:19,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:09:19,979 INFO L93 Difference]: Finished difference Result 31650 states and 38796 transitions. [2020-10-14 22:09:19,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:09:19,981 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 726 [2020-10-14 22:09:19,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:09:20,023 INFO L225 Difference]: With dead ends: 31650 [2020-10-14 22:09:20,024 INFO L226 Difference]: Without dead ends: 17387 [2020-10-14 22:09:20,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:09:20,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17387 states. [2020-10-14 22:09:20,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17387 to 17375. [2020-10-14 22:09:20,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17375 states. [2020-10-14 22:09:20,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17375 states to 17375 states and 20503 transitions. [2020-10-14 22:09:20,368 INFO L78 Accepts]: Start accepts. Automaton has 17375 states and 20503 transitions. Word has length 726 [2020-10-14 22:09:20,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:09:20,369 INFO L479 AbstractCegarLoop]: Abstraction has 17375 states and 20503 transitions. [2020-10-14 22:09:20,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:09:20,370 INFO L276 IsEmpty]: Start isEmpty. Operand 17375 states and 20503 transitions. [2020-10-14 22:09:20,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2020-10-14 22:09:20,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:09:20,388 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:20,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 22:09:20,388 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:09:20,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:09:20,389 INFO L82 PathProgramCache]: Analyzing trace with hash 492877340, now seen corresponding path program 1 times [2020-10-14 22:09:20,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:09:20,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417839579] [2020-10-14 22:09:20,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:09:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:20,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:21,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:22,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:24,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:24,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 748 [2020-10-14 22:09:24,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:09:24,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3758 [2020-10-14 22:09:24,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:24,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:24,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:24,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 578 [2020-10-14 22:09:24,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 22:09:24,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:24,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:09:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:24,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:24,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:24,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:09:24,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:24,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:09:24,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:24,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:24,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:09:24,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:24,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:09:24,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:24,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:09:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:24,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:24,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:24,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:09:24,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:24,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 22:09:24,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:24,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:09:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:09:24,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:24,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:09:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:24,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:24,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 22:09:24,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:24,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 22:09:24,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:24,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:24,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:09:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:09:24,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:24,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-14 22:09:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:24,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:24,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:24,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:09:24,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:24,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 22:09:24,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:24,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 22:09:24,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:24,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-14 22:09:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:25,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:25,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:25,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 22:09:25,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:25,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 22:09:25,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:25,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:25,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:25,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:09:25,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 22:09:25,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:25,636 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 469 proven. 2 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2020-10-14 22:09:25,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417839579] [2020-10-14 22:09:25,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:09:25,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:09:25,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943614117] [2020-10-14 22:09:25,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:09:25,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:09:25,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:09:25,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:09:25,638 INFO L87 Difference]: Start difference. First operand 17375 states and 20503 transitions. Second operand 7 states. [2020-10-14 22:09:36,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:09:36,739 INFO L93 Difference]: Finished difference Result 38491 states and 45656 transitions. [2020-10-14 22:09:36,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:09:36,742 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 732 [2020-10-14 22:09:36,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:09:36,798 INFO L225 Difference]: With dead ends: 38491 [2020-10-14 22:09:36,798 INFO L226 Difference]: Without dead ends: 22981 [2020-10-14 22:09:36,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:09:36,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22981 states. [2020-10-14 22:09:37,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22981 to 21410. [2020-10-14 22:09:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21410 states. [2020-10-14 22:09:37,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21410 states to 21410 states and 25297 transitions. [2020-10-14 22:09:37,188 INFO L78 Accepts]: Start accepts. Automaton has 21410 states and 25297 transitions. Word has length 732 [2020-10-14 22:09:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:09:37,189 INFO L479 AbstractCegarLoop]: Abstraction has 21410 states and 25297 transitions. [2020-10-14 22:09:37,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:09:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 21410 states and 25297 transitions. [2020-10-14 22:09:37,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2020-10-14 22:09:37,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:09:37,210 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:37,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 22:09:37,210 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:09:37,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:09:37,211 INFO L82 PathProgramCache]: Analyzing trace with hash -948718330, now seen corresponding path program 1 times [2020-10-14 22:09:37,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:09:37,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888461684] [2020-10-14 22:09:37,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:09:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:37,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:38,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:39,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:39,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 754 [2020-10-14 22:09:39,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:09:39,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2295 [2020-10-14 22:09:39,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:39,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 715 [2020-10-14 22:09:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 22:09:39,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:39,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:09:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:39,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:39,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:39,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:09:39,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:39,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:09:39,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:39,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:39,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:09:39,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:39,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:09:39,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:39,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:09:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:39,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:40,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:40,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:09:40,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:40,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 22:09:40,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:40,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:09:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:09:40,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:40,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:09:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:40,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:40,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:40,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:09:40,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:40,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:09:40,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:40,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:40,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:09:40,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:40,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:09:40,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:40,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:09:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:40,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:40,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:40,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 22:09:40,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 22:09:40,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:40,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:09:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:40,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:09:40,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:40,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-14 22:09:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:40,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:40,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:40,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 22:09:40,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:40,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 22:09:40,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:40,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:40,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:40,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 22:09:40,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:41,220 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 133 proven. 4 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2020-10-14 22:09:41,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888461684] [2020-10-14 22:09:41,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:09:41,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:09:41,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494943941] [2020-10-14 22:09:41,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:09:41,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:09:41,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:09:41,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:09:41,226 INFO L87 Difference]: Start difference. First operand 21410 states and 25297 transitions. Second operand 5 states. [2020-10-14 22:09:49,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:09:49,247 INFO L93 Difference]: Finished difference Result 42816 states and 50665 transitions. [2020-10-14 22:09:49,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:09:49,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 738 [2020-10-14 22:09:49,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:09:49,314 INFO L225 Difference]: With dead ends: 42816 [2020-10-14 22:09:49,314 INFO L226 Difference]: Without dead ends: 21719 [2020-10-14 22:09:49,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:09:49,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21719 states. [2020-10-14 22:09:49,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21719 to 20485. [2020-10-14 22:09:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20485 states. [2020-10-14 22:09:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20485 states to 20485 states and 23554 transitions. [2020-10-14 22:09:49,784 INFO L78 Accepts]: Start accepts. Automaton has 20485 states and 23554 transitions. Word has length 738 [2020-10-14 22:09:49,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:09:49,785 INFO L479 AbstractCegarLoop]: Abstraction has 20485 states and 23554 transitions. [2020-10-14 22:09:49,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:09:49,785 INFO L276 IsEmpty]: Start isEmpty. Operand 20485 states and 23554 transitions. [2020-10-14 22:09:49,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2020-10-14 22:09:49,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:09:49,813 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-14 22:09:49,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 22:09:49,813 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:09:49,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:09:49,814 INFO L82 PathProgramCache]: Analyzing trace with hash 888533595, now seen corresponding path program 1 times [2020-10-14 22:09:49,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:09:49,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506374523] [2020-10-14 22:09:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:09:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:50,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking...