/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:12:04,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:12:04,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:12:04,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:12:04,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:12:04,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:12:04,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:12:04,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:12:04,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:12:04,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:12:04,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:12:04,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:12:04,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:12:04,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:12:04,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:12:04,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:12:04,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:12:04,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:12:04,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:12:04,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:12:04,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:12:04,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:12:04,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:12:04,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:12:04,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:12:04,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:12:04,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:12:04,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:12:04,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:12:04,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:12:04,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:12:04,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:12:04,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:12:04,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:12:04,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:12:04,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:12:04,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:12:04,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:12:04,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:12:04,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:12:04,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:12:04,906 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 04:12:04,943 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:12:04,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:12:04,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:12:04,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:12:04,946 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:12:04,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:12:04,947 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:12:04,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:12:04,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:12:04,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:12:04,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:12:04,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:12:04,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:12:04,949 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:12:04,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:12:04,949 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:12:04,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:12:04,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:12:04,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:12:04,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:12:04,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:12:04,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:12:04,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:12:04,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:12:04,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:12:04,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:12:04,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:12:04,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:12:04,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:12:04,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:12:05,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:12:05,309 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:12:05,312 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:12:05,314 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:12:05,314 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:12:05,315 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label08.c [2020-10-14 04:12:05,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d0c70400/c0098769f15b4ad3976b03aeab624d49/FLAG18b38db14 [2020-10-14 04:12:06,202 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:12:06,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label08.c [2020-10-14 04:12:06,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d0c70400/c0098769f15b4ad3976b03aeab624d49/FLAG18b38db14 [2020-10-14 04:12:06,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d0c70400/c0098769f15b4ad3976b03aeab624d49 [2020-10-14 04:12:06,760 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:12:06,762 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:12:06,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:12:06,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:12:06,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:12:06,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:12:06" (1/1) ... [2020-10-14 04:12:06,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71155234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:12:06, skipping insertion in model container [2020-10-14 04:12:06,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:12:06" (1/1) ... [2020-10-14 04:12:06,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:12:06,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:12:08,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:12:08,152 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:12:08,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:12:08,698 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:12:08,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:12:08 WrapperNode [2020-10-14 04:12:08,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:12:08,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:12:08,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:12:08,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:12:08,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:12:08" (1/1) ... [2020-10-14 04:12:08,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:12:08" (1/1) ... [2020-10-14 04:12:08,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:12:08" (1/1) ... [2020-10-14 04:12:08,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:12:08" (1/1) ... [2020-10-14 04:12:08,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:12:08" (1/1) ... [2020-10-14 04:12:08,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:12:08" (1/1) ... [2020-10-14 04:12:09,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:12:08" (1/1) ... [2020-10-14 04:12:09,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:12:09,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:12:09,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:12:09,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:12:09,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:12:08" (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 04:12:09,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:12:09,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:12:09,115 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:12:09,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:12:09,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:12:09,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:12:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:12:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:12:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:12:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:12:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:12:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:12:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:12:09,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:12:09,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:12:15,605 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:12:15,606 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:12:15,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:12:15 BoogieIcfgContainer [2020-10-14 04:12:15,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:12:15,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:12:15,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:12:15,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:12:15,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:12:06" (1/3) ... [2020-10-14 04:12:15,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263a9358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:12:15, skipping insertion in model container [2020-10-14 04:12:15,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:12:08" (2/3) ... [2020-10-14 04:12:15,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263a9358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:12:15, skipping insertion in model container [2020-10-14 04:12:15,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:12:15" (3/3) ... [2020-10-14 04:12:15,630 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label08.c [2020-10-14 04:12:15,643 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:12:15,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:12:15,670 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:12:15,705 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:12:15,705 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:12:15,705 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:12:15,705 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:12:15,706 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:12:15,706 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:12:15,706 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:12:15,706 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:12:15,744 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:12:15,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 04:12:15,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:12:15,754 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] [2020-10-14 04:12:15,755 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:12:15,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:12:15,762 INFO L82 PathProgramCache]: Analyzing trace with hash 526679754, now seen corresponding path program 1 times [2020-10-14 04:12:15,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:12:15,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158500493] [2020-10-14 04:12:15,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:12:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:15,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:16,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:16,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 04:12:16,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:16,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-14 04:12:16,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:16,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:16,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:12:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:12:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 04:12:16,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:12:16,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:12:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:16,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:16,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:16,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:12:16,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:16,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:12:16,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:16,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:12:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:12:16,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:16,561 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 04:12:16,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158500493] [2020-10-14 04:12:16,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:12:16,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:12:16,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760014066] [2020-10-14 04:12:16,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:12:16,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:12:16,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:12:16,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:12:16,591 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 04:12:26,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:12:26,022 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-14 04:12:26,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:12:26,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-14 04:12:26,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:12:26,071 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 04:12:26,071 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 04:12:26,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:12:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 04:12:26,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-14 04:12:26,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-14 04:12:26,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2331 transitions. [2020-10-14 04:12:26,294 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2331 transitions. Word has length 27 [2020-10-14 04:12:26,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:12:26,295 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2331 transitions. [2020-10-14 04:12:26,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:12:26,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2331 transitions. [2020-10-14 04:12:26,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 04:12:26,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:12:26,301 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:12:26,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:12:26,302 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:12:26,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:12:26,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1211608110, now seen corresponding path program 1 times [2020-10-14 04:12:26,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:12:26,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596746851] [2020-10-14 04:12:26,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:12:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:26,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:26,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:27,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:27,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:12:27,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:12:27,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-10-14 04:12:27,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:27,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:12:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:12:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:12:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:27,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:12:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:27,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:27,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:27,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:12:27,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:27,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:12:27,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:27,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:27,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:27,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:12:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:27,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:27,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:27,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:12:27,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:27,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 04:12:27,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:27,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:27,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:12:27,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:27,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:12:27,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:12:27,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596746851] [2020-10-14 04:12:27,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:12:27,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:12:27,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089503398] [2020-10-14 04:12:27,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:12:27,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:12:27,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:12:27,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:12:27,362 INFO L87 Difference]: Start difference. First operand 1425 states and 2331 transitions. Second operand 5 states. [2020-10-14 04:12:36,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:12:36,313 INFO L93 Difference]: Finished difference Result 4276 states and 7041 transitions. [2020-10-14 04:12:36,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:12:36,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-14 04:12:36,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:12:36,332 INFO L225 Difference]: With dead ends: 4276 [2020-10-14 04:12:36,333 INFO L226 Difference]: Without dead ends: 2857 [2020-10-14 04:12:36,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:12:36,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-10-14 04:12:36,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2853. [2020-10-14 04:12:36,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2020-10-14 04:12:36,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4171 transitions. [2020-10-14 04:12:36,434 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4171 transitions. Word has length 97 [2020-10-14 04:12:36,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:12:36,436 INFO L479 AbstractCegarLoop]: Abstraction has 2853 states and 4171 transitions. [2020-10-14 04:12:36,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:12:36,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4171 transitions. [2020-10-14 04:12:36,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 04:12:36,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:12:36,439 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:12:36,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:12:36,440 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:12:36,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:12:36,440 INFO L82 PathProgramCache]: Analyzing trace with hash 34726003, now seen corresponding path program 1 times [2020-10-14 04:12:36,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:12:36,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776790498] [2020-10-14 04:12:36,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:12:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:36,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:36,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:37,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:37,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 04:12:37,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:12:37,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-10-14 04:12:37,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:37,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:12:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:12:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:12:37,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:37,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:12:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:37,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:37,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:37,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:12:37,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:37,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:12:37,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:37,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:37,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:37,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:37,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:37,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:37,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:12:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:37,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:37,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:37,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:12:37,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:37,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 04:12:37,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:37,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:12:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:12:37,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:37,232 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:12:37,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776790498] [2020-10-14 04:12:37,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:12:37,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:12:37,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934902284] [2020-10-14 04:12:37,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:12:37,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:12:37,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:12:37,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:12:37,236 INFO L87 Difference]: Start difference. First operand 2853 states and 4171 transitions. Second operand 5 states. [2020-10-14 04:12:50,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:12:50,030 INFO L93 Difference]: Finished difference Result 8551 states and 12662 transitions. [2020-10-14 04:12:50,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:12:50,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-14 04:12:50,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:12:50,069 INFO L225 Difference]: With dead ends: 8551 [2020-10-14 04:12:50,069 INFO L226 Difference]: Without dead ends: 5704 [2020-10-14 04:12:50,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:12:50,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2020-10-14 04:12:50,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 5696. [2020-10-14 04:12:50,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5696 states. [2020-10-14 04:12:50,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 7745 transitions. [2020-10-14 04:12:50,272 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 7745 transitions. Word has length 98 [2020-10-14 04:12:50,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:12:50,272 INFO L479 AbstractCegarLoop]: Abstraction has 5696 states and 7745 transitions. [2020-10-14 04:12:50,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:12:50,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 7745 transitions. [2020-10-14 04:12:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 04:12:50,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:12:50,276 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:12:50,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:12:50,276 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:12:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:12:50,277 INFO L82 PathProgramCache]: Analyzing trace with hash 764906870, now seen corresponding path program 1 times [2020-10-14 04:12:50,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:12:50,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728614325] [2020-10-14 04:12:50,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:12:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:50,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:50,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:50,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:50,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 04:12:50,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:12:50,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-14 04:12:50,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:50,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:50,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:12:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:12:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:12:50,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:50,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:12:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:50,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:50,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:50,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:12:50,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:50,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:12:50,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:50,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:50,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:50,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:12:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:50,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:50,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:50,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:12:50,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:50,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 04:12:50,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:50,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:50,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:12:50,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:50,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:12:50,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:12:51,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728614325] [2020-10-14 04:12:51,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:12:51,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:12:51,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791457890] [2020-10-14 04:12:51,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:12:51,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:12:51,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:12:51,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:12:51,012 INFO L87 Difference]: Start difference. First operand 5696 states and 7745 transitions. Second operand 5 states. [2020-10-14 04:13:02,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:13:02,578 INFO L93 Difference]: Finished difference Result 14242 states and 19943 transitions. [2020-10-14 04:13:02,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:13:02,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-14 04:13:02,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:13:02,625 INFO L225 Difference]: With dead ends: 14242 [2020-10-14 04:13:02,625 INFO L226 Difference]: Without dead ends: 8552 [2020-10-14 04:13:02,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:13:02,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8552 states. [2020-10-14 04:13:02,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8552 to 8536. [2020-10-14 04:13:02,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8536 states. [2020-10-14 04:13:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8536 states to 8536 states and 11293 transitions. [2020-10-14 04:13:02,847 INFO L78 Accepts]: Start accepts. Automaton has 8536 states and 11293 transitions. Word has length 101 [2020-10-14 04:13:02,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:13:02,847 INFO L479 AbstractCegarLoop]: Abstraction has 8536 states and 11293 transitions. [2020-10-14 04:13:02,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:13:02,848 INFO L276 IsEmpty]: Start isEmpty. Operand 8536 states and 11293 transitions. [2020-10-14 04:13:02,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 04:13:02,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:13:02,852 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:13:02,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:13:02,852 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:13:02,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:13:02,853 INFO L82 PathProgramCache]: Analyzing trace with hash 982412298, now seen corresponding path program 1 times [2020-10-14 04:13:02,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:13:02,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749387242] [2020-10-14 04:13:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:13:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:02,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:03,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:03,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:03,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 04:13:03,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:13:03,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-14 04:13:03,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:03,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-14 04:13:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:13:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:03,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:13:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:03,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:03,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:03,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:13:03,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:03,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:13:03,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:03,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:03,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:13:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:03,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:03,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:03,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 04:13:03,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:03,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 04:13:03,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:03,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:03,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:03,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:03,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 04:13:03,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:03,957 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:13:03,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749387242] [2020-10-14 04:13:03,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:13:03,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:13:03,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54010050] [2020-10-14 04:13:03,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:13:03,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:03,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:13:03,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:13:03,960 INFO L87 Difference]: Start difference. First operand 8536 states and 11293 transitions. Second operand 5 states. [2020-10-14 04:13:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:13:13,589 INFO L93 Difference]: Finished difference Result 21336 states and 29002 transitions. [2020-10-14 04:13:13,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:13:13,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-14 04:13:13,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:13:13,668 INFO L225 Difference]: With dead ends: 21336 [2020-10-14 04:13:13,669 INFO L226 Difference]: Without dead ends: 12806 [2020-10-14 04:13:13,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:13:13,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12806 states. [2020-10-14 04:13:13,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12806 to 12798. [2020-10-14 04:13:13,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12798 states. [2020-10-14 04:13:13,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12798 states to 12798 states and 16354 transitions. [2020-10-14 04:13:14,000 INFO L78 Accepts]: Start accepts. Automaton has 12798 states and 16354 transitions. Word has length 159 [2020-10-14 04:13:14,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:13:14,000 INFO L479 AbstractCegarLoop]: Abstraction has 12798 states and 16354 transitions. [2020-10-14 04:13:14,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:13:14,001 INFO L276 IsEmpty]: Start isEmpty. Operand 12798 states and 16354 transitions. [2020-10-14 04:13:14,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-14 04:13:14,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:13:14,009 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:13:14,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:13:14,010 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:13:14,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:13:14,010 INFO L82 PathProgramCache]: Analyzing trace with hash -447450838, now seen corresponding path program 1 times [2020-10-14 04:13:14,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:13:14,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614553365] [2020-10-14 04:13:14,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:13:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:14,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:14,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:14,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:14,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 04:13:14,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:13:14,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-10-14 04:13:14,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:14,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:14,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-14 04:13:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:13:14,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:15,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:13:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:15,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:15,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:15,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:13:15,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:15,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:13:15,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:15,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:15,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:15,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:15,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:15,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:15,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:13:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:15,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:15,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:15,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 04:13:15,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:15,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 04:13:15,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:15,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:15,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:15,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:15,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 04:13:15,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:13:15,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614553365] [2020-10-14 04:13:15,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:13:15,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:13:15,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714192405] [2020-10-14 04:13:15,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:13:15,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:15,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:13:15,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:13:15,349 INFO L87 Difference]: Start difference. First operand 12798 states and 16354 transitions. Second operand 5 states. [2020-10-14 04:13:27,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:13:27,937 INFO L93 Difference]: Finished difference Result 34085 states and 44488 transitions. [2020-10-14 04:13:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:13:27,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-14 04:13:27,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:13:28,014 INFO L225 Difference]: With dead ends: 34085 [2020-10-14 04:13:28,015 INFO L226 Difference]: Without dead ends: 21293 [2020-10-14 04:13:28,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:13:28,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21293 states. [2020-10-14 04:13:28,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21293 to 21285. [2020-10-14 04:13:28,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21285 states. [2020-10-14 04:13:28,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21285 states to 21285 states and 26110 transitions. [2020-10-14 04:13:28,543 INFO L78 Accepts]: Start accepts. Automaton has 21285 states and 26110 transitions. Word has length 175 [2020-10-14 04:13:28,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:13:28,544 INFO L479 AbstractCegarLoop]: Abstraction has 21285 states and 26110 transitions. [2020-10-14 04:13:28,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:13:28,544 INFO L276 IsEmpty]: Start isEmpty. Operand 21285 states and 26110 transitions. [2020-10-14 04:13:28,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 04:13:28,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:13:28,551 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:13:28,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:13:28,551 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:13:28,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:13:28,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1191574066, now seen corresponding path program 1 times [2020-10-14 04:13:28,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:13:28,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851507891] [2020-10-14 04:13:28,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:13:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:28,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:28,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:29,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:29,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:29,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 04:13:29,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:13:29,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1183 [2020-10-14 04:13:29,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:29,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:29,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-14 04:13:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:13:29,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:29,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:13:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:29,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:29,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:29,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:13:29,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:29,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:13:29,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:29,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:29,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:29,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:13:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:29,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:30,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:30,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 04:13:30,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:30,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 04:13:30,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:30,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:30,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:30,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 04:13:30,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:30,818 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:13:30,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851507891] [2020-10-14 04:13:30,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:13:30,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:13:30,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913140389] [2020-10-14 04:13:30,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:13:30,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:30,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:13:30,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:13:30,821 INFO L87 Difference]: Start difference. First operand 21285 states and 26110 transitions. Second operand 5 states. [2020-10-14 04:13:40,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:13:40,930 INFO L93 Difference]: Finished difference Result 51775 states and 65181 transitions. [2020-10-14 04:13:40,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:13:40,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-14 04:13:40,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:13:41,059 INFO L225 Difference]: With dead ends: 51775 [2020-10-14 04:13:41,059 INFO L226 Difference]: Without dead ends: 30496 [2020-10-14 04:13:41,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:13:41,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30496 states. [2020-10-14 04:13:41,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30496 to 30488. [2020-10-14 04:13:41,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30488 states. [2020-10-14 04:13:41,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30488 states to 30488 states and 36333 transitions. [2020-10-14 04:13:41,894 INFO L78 Accepts]: Start accepts. Automaton has 30488 states and 36333 transitions. Word has length 177 [2020-10-14 04:13:41,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:13:41,895 INFO L479 AbstractCegarLoop]: Abstraction has 30488 states and 36333 transitions. [2020-10-14 04:13:41,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:13:41,896 INFO L276 IsEmpty]: Start isEmpty. Operand 30488 states and 36333 transitions. [2020-10-14 04:13:41,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 04:13:41,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:13:41,915 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:41,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:13:41,915 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:13:41,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:13:41,916 INFO L82 PathProgramCache]: Analyzing trace with hash -146261341, now seen corresponding path program 1 times [2020-10-14 04:13:41,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:13:41,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728828080] [2020-10-14 04:13:41,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:13:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:41,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:42,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:43,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:45,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:45,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-14 04:13:45,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:13:45,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3219 [2020-10-14 04:13:45,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:45,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:45,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:13:45,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 04:13:45,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:45,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:13:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:45,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:45,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:45,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:13:45,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:45,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:13:45,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:45,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:45,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:45,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:45,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:45,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:45,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:13:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:45,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:45,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:45,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:13:45,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:45,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 04:13:45,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:45,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:45,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:45,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:45,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:13:45,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:45,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 04:13:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:45,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:45,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 04:13:45,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:45,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 04:13:45,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:45,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:13:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 04:13:45,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:13:46,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728828080] [2020-10-14 04:13:46,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:13:46,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:13:46,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121054480] [2020-10-14 04:13:46,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:13:46,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:46,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:13:46,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:13:46,113 INFO L87 Difference]: Start difference. First operand 30488 states and 36333 transitions. Second operand 7 states. [2020-10-14 04:13:56,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:13:56,384 INFO L93 Difference]: Finished difference Result 59697 states and 71336 transitions. [2020-10-14 04:13:56,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:13:56,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-14 04:13:56,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:13:56,461 INFO L225 Difference]: With dead ends: 59697 [2020-10-14 04:13:56,461 INFO L226 Difference]: Without dead ends: 26384 [2020-10-14 04:13:56,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:13:56,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26384 states. [2020-10-14 04:13:56,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26384 to 24272. [2020-10-14 04:13:56,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24272 states. [2020-10-14 04:13:56,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24272 states to 24272 states and 27216 transitions. [2020-10-14 04:13:56,966 INFO L78 Accepts]: Start accepts. Automaton has 24272 states and 27216 transitions. Word has length 258 [2020-10-14 04:13:56,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:13:56,966 INFO L479 AbstractCegarLoop]: Abstraction has 24272 states and 27216 transitions. [2020-10-14 04:13:56,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:13:56,967 INFO L276 IsEmpty]: Start isEmpty. Operand 24272 states and 27216 transitions. [2020-10-14 04:13:56,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-14 04:13:56,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:13:56,982 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:13:56,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:13:56,983 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:13:56,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:13:56,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1920391677, now seen corresponding path program 1 times [2020-10-14 04:13:56,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:13:56,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85850493] [2020-10-14 04:13:56,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:13:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:57,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:57,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:58,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:58,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-14 04:13:58,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:13:58,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1686 [2020-10-14 04:13:58,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:58,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-14 04:13:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 04:13:58,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:58,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:13:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:58,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:58,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:58,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:13:58,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:58,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:13:58,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:58,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:58,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:58,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:58,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:58,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:58,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:13:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:58,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:58,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:58,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:13:58,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:58,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:13:58,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:58,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:58,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:58,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:58,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:58,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:58,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 04:13:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:58,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:58,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:58,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:13:58,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:58,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 04:13:58,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:58,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:58,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:58,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:58,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 04:13:58,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:58,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 04:13:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:59,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:59,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:59,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 04:13:59,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:59,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-14 04:13:59,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:59,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:59,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:59,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:13:59,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 04:13:59,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 04:13:59,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85850493] [2020-10-14 04:13:59,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:13:59,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:13:59,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799503098] [2020-10-14 04:13:59,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:13:59,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:59,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:13:59,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:13:59,394 INFO L87 Difference]: Start difference. First operand 24272 states and 27216 transitions. Second operand 7 states. [2020-10-14 04:14:14,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:14,379 INFO L93 Difference]: Finished difference Result 61729 states and 70894 transitions. [2020-10-14 04:14:14,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:14:14,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 332 [2020-10-14 04:14:14,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:14,484 INFO L225 Difference]: With dead ends: 61729 [2020-10-14 04:14:14,484 INFO L226 Difference]: Without dead ends: 37463 [2020-10-14 04:14:14,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:14:14,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37463 states. [2020-10-14 04:14:15,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37463 to 37437. [2020-10-14 04:14:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37437 states. [2020-10-14 04:14:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37437 states to 37437 states and 42374 transitions. [2020-10-14 04:14:15,120 INFO L78 Accepts]: Start accepts. Automaton has 37437 states and 42374 transitions. Word has length 332 [2020-10-14 04:14:15,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:15,121 INFO L479 AbstractCegarLoop]: Abstraction has 37437 states and 42374 transitions. [2020-10-14 04:14:15,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:14:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand 37437 states and 42374 transitions. [2020-10-14 04:14:15,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-14 04:14:15,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:15,160 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 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] [2020-10-14 04:14:15,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:14:15,161 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:15,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:15,161 INFO L82 PathProgramCache]: Analyzing trace with hash 985198350, now seen corresponding path program 1 times [2020-10-14 04:14:15,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:15,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357386155] [2020-10-14 04:14:15,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:15,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:15,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:19,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:19,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 429 [2020-10-14 04:14:19,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:14:19,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3608 [2020-10-14 04:14:19,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:19,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:19,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-14 04:14:19,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 04:14:19,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:19,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:19,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:19,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:19,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:19,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:19,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:14:19,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:19,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:19,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:19,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:19,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:19,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:19,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:14:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:19,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:19,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:19,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:14:19,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:19,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:14:19,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:19,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:19,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:19,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:19,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:19,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 04:14:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:19,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:19,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:19,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:14:19,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:19,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 04:14:19,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:19,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:19,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:19,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 04:14:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:19,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:19,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:19,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:14:19,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:19,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 04:14:19,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:19,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:19,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:19,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:19,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:14:19,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:19,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-14 04:14:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:19,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:20,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:20,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 04:14:20,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:20,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-14 04:14:20,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:20,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:14:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 04:14:20,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 306 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-10-14 04:14:20,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357386155] [2020-10-14 04:14:20,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:14:20,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:14:20,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847097585] [2020-10-14 04:14:20,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:14:20,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:20,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:14:20,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:14:20,531 INFO L87 Difference]: Start difference. First operand 37437 states and 42374 transitions. Second operand 7 states. [2020-10-14 04:14:36,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:36,820 INFO L93 Difference]: Finished difference Result 86408 states and 99508 transitions. [2020-10-14 04:14:36,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:14:36,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 413 [2020-10-14 04:14:36,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:36,932 INFO L225 Difference]: With dead ends: 86408 [2020-10-14 04:14:36,933 INFO L226 Difference]: Without dead ends: 45253 [2020-10-14 04:14:37,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:14:37,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45253 states. [2020-10-14 04:14:37,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45253 to 44505. [2020-10-14 04:14:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44505 states. [2020-10-14 04:14:37,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44505 states to 44505 states and 47774 transitions. [2020-10-14 04:14:37,650 INFO L78 Accepts]: Start accepts. Automaton has 44505 states and 47774 transitions. Word has length 413 [2020-10-14 04:14:37,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:37,650 INFO L479 AbstractCegarLoop]: Abstraction has 44505 states and 47774 transitions. [2020-10-14 04:14:37,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:14:37,651 INFO L276 IsEmpty]: Start isEmpty. Operand 44505 states and 47774 transitions. [2020-10-14 04:14:37,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-10-14 04:14:37,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:37,684 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:14:37,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:14:37,685 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:37,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:37,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1902230797, now seen corresponding path program 1 times [2020-10-14 04:14:37,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:37,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355904738] [2020-10-14 04:14:37,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:37,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:37,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:41,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:42,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:42,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:42,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 498 [2020-10-14 04:14:42,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:14:42,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 04:14:42,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:42,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:42,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:42,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 308 [2020-10-14 04:14:42,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 04:14:42,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:14:42,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:42,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:42,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:42,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:42,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:42,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:14:42,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:42,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:42,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:42,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:42,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:42,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:42,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:14:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:42,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:42,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:42,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:14:42,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:42,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 04:14:42,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:42,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:42,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:42,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:42,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:42,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 04:14:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:42,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:42,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:42,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:14:42,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:42,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 04:14:42,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:42,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:42,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:42,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:42,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:42,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-14 04:14:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:43,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:43,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:43,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 04:14:43,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:43,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 04:14:43,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:43,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:43,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:43,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:43,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 04:14:43,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:43,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-14 04:14:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:43,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:43,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:43,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 04:14:43,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:43,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-14 04:14:43,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:43,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:43,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:43,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:14:43,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 04:14:43,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2020-10-14 04:14:43,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355904738] [2020-10-14 04:14:43,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:14:43,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:14:43,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566461533] [2020-10-14 04:14:43,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:14:43,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:43,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:14:43,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:14:43,639 INFO L87 Difference]: Start difference. First operand 44505 states and 47774 transitions. Second operand 7 states. [2020-10-14 04:14:54,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:54,603 INFO L93 Difference]: Finished difference Result 103195 states and 111703 transitions. [2020-10-14 04:14:54,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:14:54,605 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 482 [2020-10-14 04:14:54,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:54,744 INFO L225 Difference]: With dead ends: 103195 [2020-10-14 04:14:54,744 INFO L226 Difference]: Without dead ends: 58696 [2020-10-14 04:14:54,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:14:54,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58696 states. [2020-10-14 04:14:55,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58696 to 56553. [2020-10-14 04:14:55,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56553 states. [2020-10-14 04:14:55,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56553 states to 56553 states and 61280 transitions. [2020-10-14 04:14:55,521 INFO L78 Accepts]: Start accepts. Automaton has 56553 states and 61280 transitions. Word has length 482 [2020-10-14 04:14:55,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:55,522 INFO L479 AbstractCegarLoop]: Abstraction has 56553 states and 61280 transitions. [2020-10-14 04:14:55,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:14:55,522 INFO L276 IsEmpty]: Start isEmpty. Operand 56553 states and 61280 transitions. [2020-10-14 04:14:55,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-10-14 04:14:55,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:55,569 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:55,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:14:55,570 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:55,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:55,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1755429903, now seen corresponding path program 1 times [2020-10-14 04:14:55,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:55,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157808564] [2020-10-14 04:14:55,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:55,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:55,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:55,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:56,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:00,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:00,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 596 [2020-10-14 04:15:00,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:15:00,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 04:15:00,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:00,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:00,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:00,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-14 04:15:00,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-14 04:15:00,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:00,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:00,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:00,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:00,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:00,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:00,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:15:00,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:00,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:00,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:00,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:00,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:00,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:00,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:00,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:00,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:00,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:15:00,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:00,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:15:00,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:00,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:00,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:00,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:00,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:00,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:00,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 04:15:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:00,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:00,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:00,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:15:00,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:00,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 04:15:00,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:00,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:00,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 04:15:00,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:00,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-14 04:15:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:00,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:01,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:01,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-14 04:15:01,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:01,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 04:15:01,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:01,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:15:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-14 04:15:01,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:01,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-10-14 04:15:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:01,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:01,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:01,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 04:15:01,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:01,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 04:15:01,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:01,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:01,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:01,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 04:15:01,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:01,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 271 proven. 160 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2020-10-14 04:15:01,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157808564] [2020-10-14 04:15:01,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:01,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:15:01,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108575531] [2020-10-14 04:15:01,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:15:01,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:01,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:15:01,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:15:01,801 INFO L87 Difference]: Start difference. First operand 56553 states and 61280 transitions. Second operand 7 states. [2020-10-14 04:15:13,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:15:13,001 INFO L93 Difference]: Finished difference Result 127386 states and 139857 transitions. [2020-10-14 04:15:13,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:15:13,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 580 [2020-10-14 04:15:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:15:13,139 INFO L225 Difference]: With dead ends: 127386 [2020-10-14 04:15:13,139 INFO L226 Difference]: Without dead ends: 70121 [2020-10-14 04:15:13,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:15:13,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70121 states. [2020-10-14 04:15:14,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70121 to 67241. [2020-10-14 04:15:14,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67241 states. [2020-10-14 04:15:14,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67241 states to 67241 states and 73634 transitions. [2020-10-14 04:15:14,510 INFO L78 Accepts]: Start accepts. Automaton has 67241 states and 73634 transitions. Word has length 580 [2020-10-14 04:15:14,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:14,511 INFO L479 AbstractCegarLoop]: Abstraction has 67241 states and 73634 transitions. [2020-10-14 04:15:14,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:15:14,511 INFO L276 IsEmpty]: Start isEmpty. Operand 67241 states and 73634 transitions. [2020-10-14 04:15:14,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2020-10-14 04:15:14,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:14,581 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:14,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:15:14,582 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:14,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:14,583 INFO L82 PathProgramCache]: Analyzing trace with hash -487286008, now seen corresponding path program 1 times [2020-10-14 04:15:14,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:14,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141545677] [2020-10-14 04:15:14,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:14,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:15,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:15,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:18,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:19,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:19,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 739 [2020-10-14 04:15:19,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:15:19,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 04:15:19,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:19,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:19,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:19,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 546 [2020-10-14 04:15:19,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 04:15:19,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:19,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:19,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:19,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:19,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:19,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:19,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:15:19,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:19,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:19,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:19,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:19,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:19,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:19,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:15:19,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:19,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:15:19,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:19,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:19,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:19,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:19,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:19,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:20,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:15:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:20,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:20,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:20,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:15:20,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:20,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 04:15:20,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:20,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:20,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:20,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 04:15:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:20,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:20,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:20,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-14 04:15:20,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:20,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 04:15:20,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:20,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 299 [2020-10-14 04:15:20,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:20,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:15:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:20,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:20,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:20,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 04:15:20,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:20,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:15:20,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:20,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:20,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:20,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:20,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:15:20,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:20,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-10-14 04:15:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:20,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:20,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:20,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 04:15:20,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:20,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 04:15:20,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:20,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:15:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 04:15:20,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 470 proven. 2 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2020-10-14 04:15:20,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141545677] [2020-10-14 04:15:20,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:20,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:15:20,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390974754] [2020-10-14 04:15:20,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:15:20,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:20,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:15:20,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:15:20,799 INFO L87 Difference]: Start difference. First operand 67241 states and 73634 transitions. Second operand 7 states. [2020-10-14 04:15:31,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:15:31,343 INFO L93 Difference]: Finished difference Result 138724 states and 151958 transitions. [2020-10-14 04:15:31,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:15:31,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 721 [2020-10-14 04:15:31,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:15:31,548 INFO L225 Difference]: With dead ends: 138724 [2020-10-14 04:15:31,549 INFO L226 Difference]: Without dead ends: 67253 [2020-10-14 04:15:31,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:15:31,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67253 states. [2020-10-14 04:15:32,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67253 to 66492. [2020-10-14 04:15:32,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66492 states. [2020-10-14 04:15:32,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66492 states to 66492 states and 70355 transitions. [2020-10-14 04:15:32,788 INFO L78 Accepts]: Start accepts. Automaton has 66492 states and 70355 transitions. Word has length 721 [2020-10-14 04:15:32,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:32,789 INFO L479 AbstractCegarLoop]: Abstraction has 66492 states and 70355 transitions. [2020-10-14 04:15:32,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:15:32,790 INFO L276 IsEmpty]: Start isEmpty. Operand 66492 states and 70355 transitions. [2020-10-14 04:15:32,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2020-10-14 04:15:32,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:32,838 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:32,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:15:32,838 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:32,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:32,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1805840073, now seen corresponding path program 1 times [2020-10-14 04:15:32,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:32,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666460229] [2020-10-14 04:15:32,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:33,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:33,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:33,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:33,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:38,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:38,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 771 [2020-10-14 04:15:38,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:15:38,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 04:15:38,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:38,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:38,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:38,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:15:38,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 04:15:38,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:38,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:38,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:38,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:38,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:38,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:38,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:15:38,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:38,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:38,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:38,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:38,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:38,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:38,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:15:38,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:38,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 04:15:38,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:38,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:38,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:38,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:38,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:15:38,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:38,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:15:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:38,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:38,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:38,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:15:38,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:38,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 04:15:38,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:38,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:38,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:38,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:15:38,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 04:15:38,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:38,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 04:15:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:38,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:38,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:38,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-14 04:15:38,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:38,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 04:15:38,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:38,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:38,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:38,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 500 [2020-10-14 04:15:38,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:38,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:38,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:15:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:38,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:38,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:38,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 04:15:38,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:38,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 04:15:38,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:38,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:38,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:38,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:38,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:38,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 167 proven. 105 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-14 04:15:39,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666460229] [2020-10-14 04:15:39,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:39,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:15:39,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061170928] [2020-10-14 04:15:39,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:15:39,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:39,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:15:39,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:15:39,481 INFO L87 Difference]: Start difference. First operand 66492 states and 70355 transitions. Second operand 7 states.