/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/Problem16_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:39:19,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:39:19,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:39:19,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:39:19,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:39:19,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:39:19,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:39:19,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:39:19,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:39:19,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:39:19,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:39:19,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:39:19,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:39:19,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:39:19,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:39:19,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:39:19,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:39:19,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:39:19,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:39:19,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:39:19,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:39:19,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:39:19,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:39:19,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:39:19,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:39:19,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:39:19,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:39:19,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:39:19,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:39:19,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:39:19,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:39:19,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:39:19,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:39:19,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:39:19,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:39:19,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:39:19,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:39:19,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:39:19,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:39:19,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:39:19,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:39:19,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 03:39:19,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:39:19,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:39:19,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:39:19,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:39:19,942 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:39:19,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:39:19,943 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:39:19,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:39:19,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:39:19,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:39:19,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:39:19,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:39:19,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:39:19,946 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:39:19,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:39:19,946 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:39:19,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:39:19,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:39:19,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:39:19,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:39:19,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:39:19,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:39:19,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:39:19,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:39:19,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:39:19,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:39:19,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:39:19,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:39:19,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:39:19,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:39:20,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:39:20,311 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:39:20,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:39:20,317 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:39:20,318 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:39:20,319 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label02.c [2020-10-14 03:39:20,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8725219b4/3e1a32181b214d06971a9d4f52fce94b/FLAGa86347444 [2020-10-14 03:39:21,149 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:39:21,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label02.c [2020-10-14 03:39:21,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8725219b4/3e1a32181b214d06971a9d4f52fce94b/FLAGa86347444 [2020-10-14 03:39:21,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8725219b4/3e1a32181b214d06971a9d4f52fce94b [2020-10-14 03:39:21,309 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:39:21,310 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:39:21,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:39:21,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:39:21,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:39:21,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:39:21" (1/1) ... [2020-10-14 03:39:21,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b309059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:39:21, skipping insertion in model container [2020-10-14 03:39:21,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:39:21" (1/1) ... [2020-10-14 03:39:21,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:39:21,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:39:22,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:39:22,294 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:39:22,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:39:22,692 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:39:22,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:39:22 WrapperNode [2020-10-14 03:39:22,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:39:22,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:39:22,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:39:22,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:39:22,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:39:22" (1/1) ... [2020-10-14 03:39:22,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:39:22" (1/1) ... [2020-10-14 03:39:22,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:39:22" (1/1) ... [2020-10-14 03:39:22,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:39:22" (1/1) ... [2020-10-14 03:39:22,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:39:22" (1/1) ... [2020-10-14 03:39:22,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:39:22" (1/1) ... [2020-10-14 03:39:22,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:39:22" (1/1) ... [2020-10-14 03:39:22,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:39:22,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:39:22,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:39:22,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:39:22,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:39:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:39:22,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:39:22,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:39:22,954 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:39:22,954 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:39:22,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:39:22,954 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:39:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:39:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:39:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:39:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:39:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:39:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:39:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:39:25,376 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:39:25,376 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:39:25,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:39:25 BoogieIcfgContainer [2020-10-14 03:39:25,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:39:25,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:39:25,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:39:25,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:39:25,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:39:21" (1/3) ... [2020-10-14 03:39:25,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d757f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:39:25, skipping insertion in model container [2020-10-14 03:39:25,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:39:22" (2/3) ... [2020-10-14 03:39:25,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d757f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:39:25, skipping insertion in model container [2020-10-14 03:39:25,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:39:25" (3/3) ... [2020-10-14 03:39:25,394 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label02.c [2020-10-14 03:39:25,405 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:39:25,413 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:39:25,427 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:39:25,453 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:39:25,454 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:39:25,454 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:39:25,454 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:39:25,454 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:39:25,454 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:39:25,454 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:39:25,455 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:39:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-14 03:39:25,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 03:39:25,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:25,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:25,492 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:25,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:25,498 INFO L82 PathProgramCache]: Analyzing trace with hash -64019710, now seen corresponding path program 1 times [2020-10-14 03:39:25,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:25,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930722011] [2020-10-14 03:39:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:25,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:26,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:26,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:39:26,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:26,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-14 03:39:26,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:26,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:26,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:39:26,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:39:26,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:39:26,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:39:26,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:26,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:26,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:26,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:26,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:26,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:39:26,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:26,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:26,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:39:26,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:26,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:26,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930722011] [2020-10-14 03:39:26,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:39:26,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:39:26,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195082071] [2020-10-14 03:39:26,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:39:26,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:26,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:39:26,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:39:26,350 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-14 03:39:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:30,117 INFO L93 Difference]: Finished difference Result 1169 states and 2165 transitions. [2020-10-14 03:39:30,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:39:30,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 03:39:30,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:30,146 INFO L225 Difference]: With dead ends: 1169 [2020-10-14 03:39:30,147 INFO L226 Difference]: Without dead ends: 696 [2020-10-14 03:39:30,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:39:30,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-14 03:39:30,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 689. [2020-10-14 03:39:30,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-14 03:39:30,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1077 transitions. [2020-10-14 03:39:30,277 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1077 transitions. Word has length 67 [2020-10-14 03:39:30,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:30,278 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 1077 transitions. [2020-10-14 03:39:30,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:39:30,278 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1077 transitions. [2020-10-14 03:39:30,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 03:39:30,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:30,287 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:30,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:39:30,287 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:30,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:30,288 INFO L82 PathProgramCache]: Analyzing trace with hash -28478053, now seen corresponding path program 1 times [2020-10-14 03:39:30,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:30,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499291324] [2020-10-14 03:39:30,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:30,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:30,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:31,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:31,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:31,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 03:39:31,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:39:31,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1370 [2020-10-14 03:39:31,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:31,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:31,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:31,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:39:31,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:39:31,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:39:31,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:31,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:31,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:31,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:31,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:31,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:39:31,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:31,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:31,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:31,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:31,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:31,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:39:31,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:31,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:31,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:31,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:39:31,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:31,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 03:39:32,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:32,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:32,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:32,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:32,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:39:32,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:39:32,098 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:32,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499291324] [2020-10-14 03:39:32,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:32,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:39:32,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478336107] [2020-10-14 03:39:32,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:39:32,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:32,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:39:32,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:39:32,103 INFO L87 Difference]: Start difference. First operand 689 states and 1077 transitions. Second operand 5 states. [2020-10-14 03:39:36,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:36,356 INFO L93 Difference]: Finished difference Result 2060 states and 3249 transitions. [2020-10-14 03:39:36,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:39:36,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-14 03:39:36,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:36,368 INFO L225 Difference]: With dead ends: 2060 [2020-10-14 03:39:36,368 INFO L226 Difference]: Without dead ends: 1377 [2020-10-14 03:39:36,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:39:36,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2020-10-14 03:39:36,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1373. [2020-10-14 03:39:36,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1373 states. [2020-10-14 03:39:36,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1958 transitions. [2020-10-14 03:39:36,436 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1958 transitions. Word has length 142 [2020-10-14 03:39:36,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:36,437 INFO L479 AbstractCegarLoop]: Abstraction has 1373 states and 1958 transitions. [2020-10-14 03:39:36,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:39:36,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1958 transitions. [2020-10-14 03:39:36,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 03:39:36,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:36,444 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:39:36,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:39:36,444 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:36,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:36,445 INFO L82 PathProgramCache]: Analyzing trace with hash 495699343, now seen corresponding path program 1 times [2020-10-14 03:39:36,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:36,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756999685] [2020-10-14 03:39:36,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:36,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:36,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:37,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:38,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:38,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 03:39:38,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:39:38,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1637 [2020-10-14 03:39:38,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:38,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 03:39:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:39:38,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:38,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:38,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:38,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:38,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:38,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:38,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:39:38,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:38,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:38,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:38,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:38,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:38,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:38,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:39:38,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:38,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 03:39:38,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:38,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:39:38,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:38,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756999685] [2020-10-14 03:39:38,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:38,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:39:38,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959975853] [2020-10-14 03:39:38,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:39:38,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:38,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:39:38,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:39:38,472 INFO L87 Difference]: Start difference. First operand 1373 states and 1958 transitions. Second operand 5 states. [2020-10-14 03:39:42,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:42,621 INFO L93 Difference]: Finished difference Result 3425 states and 5023 transitions. [2020-10-14 03:39:42,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:39:42,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-14 03:39:42,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:42,641 INFO L225 Difference]: With dead ends: 3425 [2020-10-14 03:39:42,641 INFO L226 Difference]: Without dead ends: 2058 [2020-10-14 03:39:42,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:39:42,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2020-10-14 03:39:42,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 2054. [2020-10-14 03:39:42,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2054 states. [2020-10-14 03:39:42,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2945 transitions. [2020-10-14 03:39:42,719 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2945 transitions. Word has length 152 [2020-10-14 03:39:42,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:42,721 INFO L479 AbstractCegarLoop]: Abstraction has 2054 states and 2945 transitions. [2020-10-14 03:39:42,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:39:42,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2945 transitions. [2020-10-14 03:39:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 03:39:42,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:42,735 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:39:42,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:39:42,738 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:42,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:42,738 INFO L82 PathProgramCache]: Analyzing trace with hash 519184547, now seen corresponding path program 1 times [2020-10-14 03:39:42,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:42,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292303115] [2020-10-14 03:39:42,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:42,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:43,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:43,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 03:39:43,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:43,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-14 03:39:43,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:43,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:39:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:39:43,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 03:39:43,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 03:39:43,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:43,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:43,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:43,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:43,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:43,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:39:43,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:43,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:43,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:39:43,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:43,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:43,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:43,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:43,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:39:43,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:43,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 03:39:43,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:43,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:43,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:43,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:43,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:39:43,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:43,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292303115] [2020-10-14 03:39:43,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:39:43,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:39:43,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14018488] [2020-10-14 03:39:43,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:39:43,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:43,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:39:43,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:39:43,673 INFO L87 Difference]: Start difference. First operand 2054 states and 2945 transitions. Second operand 7 states. [2020-10-14 03:39:47,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:47,425 INFO L93 Difference]: Finished difference Result 5168 states and 7335 transitions. [2020-10-14 03:39:47,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 03:39:47,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-10-14 03:39:47,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:47,452 INFO L225 Difference]: With dead ends: 5168 [2020-10-14 03:39:47,452 INFO L226 Difference]: Without dead ends: 3120 [2020-10-14 03:39:47,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 03:39:47,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2020-10-14 03:39:47,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 3114. [2020-10-14 03:39:47,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3114 states. [2020-10-14 03:39:47,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 4221 transitions. [2020-10-14 03:39:47,566 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 4221 transitions. Word has length 178 [2020-10-14 03:39:47,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:47,568 INFO L479 AbstractCegarLoop]: Abstraction has 3114 states and 4221 transitions. [2020-10-14 03:39:47,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:39:47,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 4221 transitions. [2020-10-14 03:39:47,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-14 03:39:47,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:47,573 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:47,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:39:47,573 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:47,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:47,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1159926905, now seen corresponding path program 1 times [2020-10-14 03:39:47,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:47,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614160698] [2020-10-14 03:39:47,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:47,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:47,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:47,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:48,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:49,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:51,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:51,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 03:39:51,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:39:51,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3547 [2020-10-14 03:39:51,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:51,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 03:39:51,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:39:51,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:51,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:51,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:51,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:51,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:51,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:51,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:39:51,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:51,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:51,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:51,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:51,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:51,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:39:51,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:51,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 03:39:51,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:51,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:51,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:51,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:51,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:39:51,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:51,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 03:39:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:51,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:51,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:51,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:39:51,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:51,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 03:39:51,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:51,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:51,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:51,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:51,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:39:51,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:39:51,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614160698] [2020-10-14 03:39:51,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:51,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:39:51,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177128672] [2020-10-14 03:39:51,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:39:51,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:51,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:39:51,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:39:51,619 INFO L87 Difference]: Start difference. First operand 3114 states and 4221 transitions. Second operand 8 states. [2020-10-14 03:39:57,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:57,781 INFO L93 Difference]: Finished difference Result 8351 states and 12044 transitions. [2020-10-14 03:39:57,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 03:39:57,783 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 214 [2020-10-14 03:39:57,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:57,816 INFO L225 Difference]: With dead ends: 8351 [2020-10-14 03:39:57,816 INFO L226 Difference]: Without dead ends: 5243 [2020-10-14 03:39:57,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 03:39:57,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5243 states. [2020-10-14 03:39:57,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5243 to 5214. [2020-10-14 03:39:57,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5214 states. [2020-10-14 03:39:57,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 7114 transitions. [2020-10-14 03:39:57,977 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 7114 transitions. Word has length 214 [2020-10-14 03:39:57,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:57,978 INFO L479 AbstractCegarLoop]: Abstraction has 5214 states and 7114 transitions. [2020-10-14 03:39:57,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:39:57,978 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 7114 transitions. [2020-10-14 03:39:57,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-14 03:39:57,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:57,983 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:57,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:39:57,984 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:57,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:57,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1959257627, now seen corresponding path program 1 times [2020-10-14 03:39:57,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:57,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242523564] [2020-10-14 03:39:57,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:58,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:58,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:58,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:58,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:59,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:02,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:02,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-14 03:40:02,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:40:02,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4137 [2020-10-14 03:40:02,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:02,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 03:40:02,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 03:40:02,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:02,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:02,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:02,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:02,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:02,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:02,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:40:02,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:02,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:02,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:02,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:02,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:02,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 03:40:02,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:02,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 03:40:02,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:02,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:02,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:02,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 03:40:02,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:02,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 03:40:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:02,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:02,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:02,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:40:02,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:02,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 03:40:02,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:02,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:02,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:02,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:02,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 03:40:02,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:40:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:40:02,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242523564] [2020-10-14 03:40:02,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:02,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:40:02,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454409551] [2020-10-14 03:40:02,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:40:02,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:02,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:40:02,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:40:02,738 INFO L87 Difference]: Start difference. First operand 5214 states and 7114 transitions. Second operand 7 states. [2020-10-14 03:40:07,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:07,359 INFO L93 Difference]: Finished difference Result 13215 states and 18544 transitions. [2020-10-14 03:40:07,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:40:07,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-10-14 03:40:07,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:07,400 INFO L225 Difference]: With dead ends: 13215 [2020-10-14 03:40:07,400 INFO L226 Difference]: Without dead ends: 7277 [2020-10-14 03:40:07,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:40:07,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7277 states. [2020-10-14 03:40:07,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7277 to 5889. [2020-10-14 03:40:07,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5889 states. [2020-10-14 03:40:07,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5889 states to 5889 states and 6802 transitions. [2020-10-14 03:40:07,601 INFO L78 Accepts]: Start accepts. Automaton has 5889 states and 6802 transitions. Word has length 244 [2020-10-14 03:40:07,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:07,602 INFO L479 AbstractCegarLoop]: Abstraction has 5889 states and 6802 transitions. [2020-10-14 03:40:07,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:40:07,602 INFO L276 IsEmpty]: Start isEmpty. Operand 5889 states and 6802 transitions. [2020-10-14 03:40:07,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-14 03:40:07,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:07,607 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:40:07,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:40:07,607 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:07,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:07,608 INFO L82 PathProgramCache]: Analyzing trace with hash 570758835, now seen corresponding path program 1 times [2020-10-14 03:40:07,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:07,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805513185] [2020-10-14 03:40:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:07,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:08,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:08,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 03:40:08,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:08,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-10-14 03:40:08,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:08,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:40:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:40:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-14 03:40:08,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:08,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:08,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:08,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:08,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:08,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:08,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:40:08,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:08,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:08,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:08,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:08,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:40:08,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:08,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:08,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:08,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:08,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 03:40:08,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:08,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-14 03:40:08,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:08,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:08,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:08,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:08,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 03:40:08,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:09,005 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:40:09,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805513185] [2020-10-14 03:40:09,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:40:09,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:40:09,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028077135] [2020-10-14 03:40:09,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:40:09,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:09,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:40:09,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:40:09,010 INFO L87 Difference]: Start difference. First operand 5889 states and 6802 transitions. Second operand 7 states. [2020-10-14 03:40:11,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:11,974 INFO L93 Difference]: Finished difference Result 15565 states and 18289 transitions. [2020-10-14 03:40:11,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:40:11,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-10-14 03:40:11,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:12,022 INFO L225 Difference]: With dead ends: 15565 [2020-10-14 03:40:12,022 INFO L226 Difference]: Without dead ends: 9682 [2020-10-14 03:40:12,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:40:12,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9682 states. [2020-10-14 03:40:12,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9682 to 9339. [2020-10-14 03:40:12,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9339 states. [2020-10-14 03:40:12,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9339 states to 9339 states and 10624 transitions. [2020-10-14 03:40:12,267 INFO L78 Accepts]: Start accepts. Automaton has 9339 states and 10624 transitions. Word has length 250 [2020-10-14 03:40:12,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:12,268 INFO L479 AbstractCegarLoop]: Abstraction has 9339 states and 10624 transitions. [2020-10-14 03:40:12,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:40:12,268 INFO L276 IsEmpty]: Start isEmpty. Operand 9339 states and 10624 transitions. [2020-10-14 03:40:12,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-14 03:40:12,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:12,274 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:40:12,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:40:12,275 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:12,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:12,275 INFO L82 PathProgramCache]: Analyzing trace with hash 539272198, now seen corresponding path program 1 times [2020-10-14 03:40:12,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:12,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212102344] [2020-10-14 03:40:12,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:12,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:12,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:14,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:14,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-14 03:40:14,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:40:14,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2461 [2020-10-14 03:40:14,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:14,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:40:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:40:14,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-14 03:40:14,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:14,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:14,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:14,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:14,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:14,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:14,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 03:40:14,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:14,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:14,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:40:14,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:14,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:15,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:15,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:15,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 03:40:15,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:15,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-14 03:40:15,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:15,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:15,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:15,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:15,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 03:40:15,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:40:15,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212102344] [2020-10-14 03:40:15,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:40:15,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:40:15,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424242550] [2020-10-14 03:40:15,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:40:15,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:15,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:40:15,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:40:15,783 INFO L87 Difference]: Start difference. First operand 9339 states and 10624 transitions. Second operand 7 states. [2020-10-14 03:40:18,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:18,810 INFO L93 Difference]: Finished difference Result 19382 states and 22060 transitions. [2020-10-14 03:40:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:40:18,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 331 [2020-10-14 03:40:18,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:18,849 INFO L225 Difference]: With dead ends: 19382 [2020-10-14 03:40:18,850 INFO L226 Difference]: Without dead ends: 10049 [2020-10-14 03:40:18,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:40:18,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10049 states. [2020-10-14 03:40:19,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10049 to 10041. [2020-10-14 03:40:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10041 states. [2020-10-14 03:40:19,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10041 states to 10041 states and 11392 transitions. [2020-10-14 03:40:19,075 INFO L78 Accepts]: Start accepts. Automaton has 10041 states and 11392 transitions. Word has length 331 [2020-10-14 03:40:19,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:19,076 INFO L479 AbstractCegarLoop]: Abstraction has 10041 states and 11392 transitions. [2020-10-14 03:40:19,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:40:19,076 INFO L276 IsEmpty]: Start isEmpty. Operand 10041 states and 11392 transitions. [2020-10-14 03:40:19,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-10-14 03:40:19,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:19,087 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:40:19,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:40:19,088 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:19,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:19,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1075441394, now seen corresponding path program 1 times [2020-10-14 03:40:19,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:19,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106893443] [2020-10-14 03:40:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:19,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:19,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:21,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:21,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:24,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:24,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-14 03:40:24,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:40:24,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-14 03:40:24,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:24,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 03:40:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-14 03:40:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-14 03:40:24,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:24,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:24,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:24,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:24,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:24,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:24,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:40:24,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:24,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:24,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:24,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:24,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:24,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:24,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:24,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:24,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:24,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:40:24,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:24,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 03:40:24,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:24,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-14 03:40:24,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:24,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 03:40:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:24,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:24,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:24,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 03:40:24,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:24,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 03:40:24,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:24,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:40:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 03:40:24,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:25,214 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 238 proven. 64 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:40:25,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106893443] [2020-10-14 03:40:25,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:25,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:40:25,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580578545] [2020-10-14 03:40:25,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:40:25,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:25,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:40:25,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:40:25,217 INFO L87 Difference]: Start difference. First operand 10041 states and 11392 transitions. Second operand 8 states. [2020-10-14 03:40:30,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:30,329 INFO L93 Difference]: Finished difference Result 22462 states and 25504 transitions. [2020-10-14 03:40:30,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:40:30,330 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 489 [2020-10-14 03:40:30,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:30,382 INFO L225 Difference]: With dead ends: 22462 [2020-10-14 03:40:30,383 INFO L226 Difference]: Without dead ends: 12760 [2020-10-14 03:40:30,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:40:30,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12760 states. [2020-10-14 03:40:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12760 to 12417. [2020-10-14 03:40:30,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12417 states. [2020-10-14 03:40:30,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12417 states to 12417 states and 14027 transitions. [2020-10-14 03:40:30,646 INFO L78 Accepts]: Start accepts. Automaton has 12417 states and 14027 transitions. Word has length 489 [2020-10-14 03:40:30,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:30,647 INFO L479 AbstractCegarLoop]: Abstraction has 12417 states and 14027 transitions. [2020-10-14 03:40:30,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:40:30,648 INFO L276 IsEmpty]: Start isEmpty. Operand 12417 states and 14027 transitions. [2020-10-14 03:40:30,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2020-10-14 03:40:30,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:30,663 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 03:40:30,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:40:30,664 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:30,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:30,664 INFO L82 PathProgramCache]: Analyzing trace with hash -2058576001, now seen corresponding path program 1 times [2020-10-14 03:40:30,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:30,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180844004] [2020-10-14 03:40:30,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:30,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:31,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:32,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:35,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:35,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 560 [2020-10-14 03:40:35,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:40:35,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4311 [2020-10-14 03:40:35,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:35,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:35,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:35,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-14 03:40:35,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 03:40:35,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:35,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:35,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:35,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:35,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:35,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:35,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:40:35,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:35,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:35,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:35,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:35,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:35,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:35,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:35,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:35,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:35,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:40:35,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:35,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 03:40:35,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:35,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:35,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:35,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:35,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-14 03:40:35,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:35,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 03:40:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:35,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:35,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:35,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:40:35,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:35,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-14 03:40:35,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:35,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:35,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:35,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:35,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 03:40:35,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:35,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-14 03:40:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:35,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:35,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:35,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:40:35,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:35,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 03:40:35,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:35,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:35,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:35,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 03:40:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:35,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 310 proven. 110 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-14 03:40:36,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180844004] [2020-10-14 03:40:36,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:36,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:40:36,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216230817] [2020-10-14 03:40:36,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:40:36,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:36,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:40:36,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:40:36,159 INFO L87 Difference]: Start difference. First operand 12417 states and 14027 transitions. Second operand 7 states. [2020-10-14 03:40:39,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:39,722 INFO L93 Difference]: Finished difference Result 27555 states and 31405 transitions. [2020-10-14 03:40:39,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:40:39,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 546 [2020-10-14 03:40:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:39,766 INFO L225 Difference]: With dead ends: 27555 [2020-10-14 03:40:39,766 INFO L226 Difference]: Without dead ends: 15135 [2020-10-14 03:40:39,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:40:39,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15135 states. [2020-10-14 03:40:40,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15135 to 14110. [2020-10-14 03:40:40,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14110 states. [2020-10-14 03:40:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14110 states to 14110 states and 15575 transitions. [2020-10-14 03:40:40,057 INFO L78 Accepts]: Start accepts. Automaton has 14110 states and 15575 transitions. Word has length 546 [2020-10-14 03:40:40,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:40,058 INFO L479 AbstractCegarLoop]: Abstraction has 14110 states and 15575 transitions. [2020-10-14 03:40:40,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:40:40,058 INFO L276 IsEmpty]: Start isEmpty. Operand 14110 states and 15575 transitions. [2020-10-14 03:40:40,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2020-10-14 03:40:40,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:40,080 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:40:40,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:40:40,080 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:40,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:40,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1536623415, now seen corresponding path program 1 times [2020-10-14 03:40:40,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:40,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838221562] [2020-10-14 03:40:40,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:40,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:40,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:42,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:42,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 590 [2020-10-14 03:40:42,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:40:42,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1713 [2020-10-14 03:40:42,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:42,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:42,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:42,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-14 03:40:42,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-14 03:40:42,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:42,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:42,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:42,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:42,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:42,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:42,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:40:42,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:42,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:42,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:42,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:42,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:42,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:42,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:42,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:42,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:42,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:40:42,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:42,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 03:40:42,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:42,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:42,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:42,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:42,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-14 03:40:42,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:42,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 03:40:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:42,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:42,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 03:40:42,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:42,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-14 03:40:42,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:42,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:42,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 03:40:42,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:40:43,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838221562] [2020-10-14 03:40:43,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:43,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:40:43,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204905602] [2020-10-14 03:40:43,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:40:43,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:43,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:40:43,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:40:43,217 INFO L87 Difference]: Start difference. First operand 14110 states and 15575 transitions. Second operand 7 states. [2020-10-14 03:40:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:46,277 INFO L93 Difference]: Finished difference Result 27891 states and 30839 transitions. [2020-10-14 03:40:46,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:40:46,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 578 [2020-10-14 03:40:46,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:46,326 INFO L225 Difference]: With dead ends: 27891 [2020-10-14 03:40:46,326 INFO L226 Difference]: Without dead ends: 14126 [2020-10-14 03:40:46,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:40:46,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14126 states. [2020-10-14 03:40:46,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14126 to 14112. [2020-10-14 03:40:46,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14112 states. [2020-10-14 03:40:46,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14112 states to 14112 states and 15582 transitions. [2020-10-14 03:40:46,572 INFO L78 Accepts]: Start accepts. Automaton has 14112 states and 15582 transitions. Word has length 578 [2020-10-14 03:40:46,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:46,573 INFO L479 AbstractCegarLoop]: Abstraction has 14112 states and 15582 transitions. [2020-10-14 03:40:46,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:40:46,573 INFO L276 IsEmpty]: Start isEmpty. Operand 14112 states and 15582 transitions. [2020-10-14 03:40:46,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-10-14 03:40:46,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:46,590 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:40:46,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:40:46,591 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:46,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:46,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1546171705, now seen corresponding path program 1 times [2020-10-14 03:40:46,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:46,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977428923] [2020-10-14 03:40:46,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:46,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:47,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:47,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:47,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-14 03:40:47,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:40:47,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-10-14 03:40:47,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:47,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:47,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 03:40:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-14 03:40:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 340 [2020-10-14 03:40:47,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:47,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:47,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:47,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:47,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:47,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:47,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:40:47,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:47,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:47,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:47,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:47,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:47,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:47,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:48,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:48,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:48,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:40:48,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 03:40:48,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:48,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-14 03:40:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:48,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 03:40:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:48,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:48,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:48,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 03:40:48,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:48,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-14 03:40:48,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:48,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:48,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:40:48,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:48,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-14 03:40:48,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:49,060 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 306 proven. 60 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:40:49,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977428923] [2020-10-14 03:40:49,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:49,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:40:49,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113783185] [2020-10-14 03:40:49,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:40:49,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:49,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:40:49,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:40:49,064 INFO L87 Difference]: Start difference. First operand 14112 states and 15582 transitions. Second operand 8 states. [2020-10-14 03:40:53,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:53,573 INFO L93 Difference]: Finished difference Result 33012 states and 36728 transitions. [2020-10-14 03:40:53,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:40:53,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 586 [2020-10-14 03:40:53,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:53,619 INFO L225 Difference]: With dead ends: 33012 [2020-10-14 03:40:53,620 INFO L226 Difference]: Without dead ends: 18530 [2020-10-14 03:40:53,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:40:53,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18530 states. [2020-10-14 03:40:53,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18530 to 17848. [2020-10-14 03:40:53,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17848 states. [2020-10-14 03:40:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17848 states to 17848 states and 19792 transitions. [2020-10-14 03:40:53,919 INFO L78 Accepts]: Start accepts. Automaton has 17848 states and 19792 transitions. Word has length 586 [2020-10-14 03:40:53,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:53,921 INFO L479 AbstractCegarLoop]: Abstraction has 17848 states and 19792 transitions. [2020-10-14 03:40:53,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:40:53,921 INFO L276 IsEmpty]: Start isEmpty. Operand 17848 states and 19792 transitions. [2020-10-14 03:40:53,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2020-10-14 03:40:53,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:53,940 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:40:53,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:40:53,940 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:53,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:53,941 INFO L82 PathProgramCache]: Analyzing trace with hash 18994266, now seen corresponding path program 1 times [2020-10-14 03:40:53,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:53,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271507379] [2020-10-14 03:40:53,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:54,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:54,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:56,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:56,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 665 [2020-10-14 03:40:56,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:40:56,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2742 [2020-10-14 03:40:56,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:56,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:56,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:56,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-10-14 03:40:56,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 03:40:56,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:56,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:56,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:56,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:56,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:56,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:56,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:40:56,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:56,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:56,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:56,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:56,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:56,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:56,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:56,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:56,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:56,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:40:56,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:56,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 03:40:56,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:56,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:56,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:56,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 03:40:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:57,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:57,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:57,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 03:40:57,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:57,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 03:40:57,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:57,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:57,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:57,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:57,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 03:40:57,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:57,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-14 03:40:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:57,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:57,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:57,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 03:40:57,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:57,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 03:40:57,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:57,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:57,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:57,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:57,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 03:40:57,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 524 proven. 2 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-10-14 03:40:57,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271507379] [2020-10-14 03:40:57,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:57,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:40:57,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074174246] [2020-10-14 03:40:57,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:40:57,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:57,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:40:57,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:40:57,535 INFO L87 Difference]: Start difference. First operand 17848 states and 19792 transitions. Second operand 7 states. [2020-10-14 03:41:01,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:01,367 INFO L93 Difference]: Finished difference Result 39444 states and 44144 transitions. [2020-10-14 03:41:01,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:41:01,368 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 651 [2020-10-14 03:41:01,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:01,428 INFO L225 Difference]: With dead ends: 39444 [2020-10-14 03:41:01,428 INFO L226 Difference]: Without dead ends: 21602 [2020-10-14 03:41:01,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:41:01,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21602 states. [2020-10-14 03:41:01,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21602 to 20226. [2020-10-14 03:41:01,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20226 states. [2020-10-14 03:41:01,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20226 states to 20226 states and 22301 transitions. [2020-10-14 03:41:01,805 INFO L78 Accepts]: Start accepts. Automaton has 20226 states and 22301 transitions. Word has length 651 [2020-10-14 03:41:01,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:01,806 INFO L479 AbstractCegarLoop]: Abstraction has 20226 states and 22301 transitions. [2020-10-14 03:41:01,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:41:01,807 INFO L276 IsEmpty]: Start isEmpty. Operand 20226 states and 22301 transitions. [2020-10-14 03:41:01,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2020-10-14 03:41:01,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:01,827 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:41:01,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:41:01,828 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:01,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:01,829 INFO L82 PathProgramCache]: Analyzing trace with hash -592376333, now seen corresponding path program 1 times [2020-10-14 03:41:01,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:01,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200963684] [2020-10-14 03:41:01,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:02,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:02,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:02,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 726 [2020-10-14 03:41:02,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:02,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844 [2020-10-14 03:41:02,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:02,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-14 03:41:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 03:41:02,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:02,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:02,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:02,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:02,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:02,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:02,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:41:02,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:02,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:02,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:02,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:02,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:02,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:02,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:02,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:03,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:03,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:41:03,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 03:41:03,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:03,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:03,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:03,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:03,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 03:41:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:03,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:03,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:03,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 03:41:03,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:03,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 03:41:03,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:03,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:03,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:03,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:03,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-14 03:41:03,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:03,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 03:41:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:03,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:03,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:03,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 03:41:03,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:03,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 03:41:03,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:03,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 03:41:03,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 545 proven. 2 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-14 03:41:03,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200963684] [2020-10-14 03:41:03,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:03,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:41:03,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841610962] [2020-10-14 03:41:03,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:41:03,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:03,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:41:03,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:41:03,730 INFO L87 Difference]: Start difference. First operand 20226 states and 22301 transitions. Second operand 7 states. [2020-10-14 03:41:07,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:07,778 INFO L93 Difference]: Finished difference Result 42853 states and 47617 transitions. [2020-10-14 03:41:07,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:41:07,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 712 [2020-10-14 03:41:07,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:07,839 INFO L225 Difference]: With dead ends: 42853 [2020-10-14 03:41:07,839 INFO L226 Difference]: Without dead ends: 22633 [2020-10-14 03:41:07,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:41:07,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22633 states. [2020-10-14 03:41:08,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22633 to 21907. [2020-10-14 03:41:08,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21907 states. [2020-10-14 03:41:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21907 states to 21907 states and 23860 transitions. [2020-10-14 03:41:08,203 INFO L78 Accepts]: Start accepts. Automaton has 21907 states and 23860 transitions. Word has length 712 [2020-10-14 03:41:08,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:08,203 INFO L479 AbstractCegarLoop]: Abstraction has 21907 states and 23860 transitions. [2020-10-14 03:41:08,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:41:08,204 INFO L276 IsEmpty]: Start isEmpty. Operand 21907 states and 23860 transitions. [2020-10-14 03:41:08,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2020-10-14 03:41:08,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:08,221 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:41:08,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:41:08,222 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:08,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:08,222 INFO L82 PathProgramCache]: Analyzing trace with hash 985020946, now seen corresponding path program 1 times [2020-10-14 03:41:08,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:08,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717445693] [2020-10-14 03:41:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:08,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:09,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:09,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 749 [2020-10-14 03:41:09,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:09,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 866 [2020-10-14 03:41:09,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:09,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-14 03:41:09,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-14 03:41:09,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:09,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:09,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:09,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:09,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:09,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:09,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:41:09,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:09,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:09,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:09,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:09,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:09,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:09,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:09,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:09,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:09,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:41:09,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:09,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 03:41:09,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:09,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:09,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:09,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:09,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:09,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:09,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 03:41:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:09,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:09,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:09,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 03:41:09,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:09,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 03:41:09,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:09,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:09,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:09,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:09,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 03:41:09,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:09,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 03:41:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:09,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:09,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:09,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 03:41:09,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:09,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-14 03:41:09,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:09,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:09,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:09,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:09,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 03:41:09,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 583 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-14 03:41:10,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717445693] [2020-10-14 03:41:10,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:10,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:41:10,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400237695] [2020-10-14 03:41:10,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:41:10,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:10,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:41:10,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:41:10,810 INFO L87 Difference]: Start difference. First operand 21907 states and 23860 transitions. Second operand 8 states. [2020-10-14 03:41:14,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:14,914 INFO L93 Difference]: Finished difference Result 43473 states and 47381 transitions. [2020-10-14 03:41:14,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:41:14,915 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 735 [2020-10-14 03:41:14,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:14,963 INFO L225 Difference]: With dead ends: 43473 [2020-10-14 03:41:14,963 INFO L226 Difference]: Without dead ends: 21911 [2020-10-14 03:41:14,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:41:15,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21911 states. [2020-10-14 03:41:15,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21911 to 21907. [2020-10-14 03:41:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21907 states. [2020-10-14 03:41:15,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21907 states to 21907 states and 23846 transitions. [2020-10-14 03:41:15,391 INFO L78 Accepts]: Start accepts. Automaton has 21907 states and 23846 transitions. Word has length 735 [2020-10-14 03:41:15,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:15,392 INFO L479 AbstractCegarLoop]: Abstraction has 21907 states and 23846 transitions. [2020-10-14 03:41:15,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:41:15,392 INFO L276 IsEmpty]: Start isEmpty. Operand 21907 states and 23846 transitions. [2020-10-14 03:41:15,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2020-10-14 03:41:15,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:15,411 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:41:15,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 03:41:15,413 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:15,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:15,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1477657161, now seen corresponding path program 1 times [2020-10-14 03:41:15,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:15,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792284743] [2020-10-14 03:41:15,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:15,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:15,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:18,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:19,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:19,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 760 [2020-10-14 03:41:19,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:41:19,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4262 [2020-10-14 03:41:19,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:19,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-14 03:41:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-14 03:41:19,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:19,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:19,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:19,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:19,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:19,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:19,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:41:19,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:19,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:19,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:41:19,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:19,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:20,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:20,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:41:20,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:20,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 03:41:20,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:20,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:20,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:20,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:20,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:20,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:20,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 03:41:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:20,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:20,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:20,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 03:41:20,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:20,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 03:41:20,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:20,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:20,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 03:41:20,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:20,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-14 03:41:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:20,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:20,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:20,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 03:41:20,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:20,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-14 03:41:20,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:20,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:20,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:20,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:20,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-14 03:41:20,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:20,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-14 03:41:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:20,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:20,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:20,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:41:20,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:20,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 03:41:20,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:20,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 03:41:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:20,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:41:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 566 proven. 110 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2020-10-14 03:41:21,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792284743] [2020-10-14 03:41:21,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:21,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:41:21,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309851287] [2020-10-14 03:41:21,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:41:21,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:21,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:41:21,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:41:21,061 INFO L87 Difference]: Start difference. First operand 21907 states and 23846 transitions. Second operand 7 states. [2020-10-14 03:41:24,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:24,591 INFO L93 Difference]: Finished difference Result 47196 states and 51314 transitions. [2020-10-14 03:41:24,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:41:24,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 744 [2020-10-14 03:41:24,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:24,650 INFO L225 Difference]: With dead ends: 47196 [2020-10-14 03:41:24,650 INFO L226 Difference]: Without dead ends: 25634 [2020-10-14 03:41:24,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:41:24,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25634 states. [2020-10-14 03:41:24,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25634 to 23608. [2020-10-14 03:41:24,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23608 states. [2020-10-14 03:41:25,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23608 states to 23608 states and 25624 transitions. [2020-10-14 03:41:25,004 INFO L78 Accepts]: Start accepts. Automaton has 23608 states and 25624 transitions. Word has length 744 [2020-10-14 03:41:25,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:25,005 INFO L479 AbstractCegarLoop]: Abstraction has 23608 states and 25624 transitions. [2020-10-14 03:41:25,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:41:25,005 INFO L276 IsEmpty]: Start isEmpty. Operand 23608 states and 25624 transitions. [2020-10-14 03:41:25,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2020-10-14 03:41:25,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:25,025 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:41:25,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 03:41:25,026 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:25,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:25,026 INFO L82 PathProgramCache]: Analyzing trace with hash 971732642, now seen corresponding path program 1 times [2020-10-14 03:41:25,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:25,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613163357] [2020-10-14 03:41:25,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:25,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:25,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:26,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:26,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 757 [2020-10-14 03:41:26,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:41:26,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1527 [2020-10-14 03:41:26,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:26,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:26,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:26,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-14 03:41:26,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-14 03:41:26,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:26,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:26,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:26,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:26,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:26,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:26,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:41:26,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:26,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:26,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:26,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:26,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:26,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:26,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:41:26,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:26,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 03:41:26,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:26,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:26,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:26,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:26,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:26,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:26,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 03:41:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:26,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:27,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:27,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 03:41:27,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:27,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 03:41:27,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:27,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:27,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:27,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:27,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 03:41:27,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:27,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 03:41:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:27,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:27,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:27,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 03:41:27,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:27,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-14 03:41:27,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:27,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-14 03:41:27,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 583 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-14 03:41:27,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613163357] [2020-10-14 03:41:27,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:27,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:41:27,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825752745] [2020-10-14 03:41:27,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:41:27,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:27,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:41:27,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:41:27,887 INFO L87 Difference]: Start difference. First operand 23608 states and 25624 transitions. Second operand 7 states. [2020-10-14 03:41:31,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:31,773 INFO L93 Difference]: Finished difference Result 46177 states and 50183 transitions. [2020-10-14 03:41:31,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:41:31,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 743 [2020-10-14 03:41:31,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:31,816 INFO L225 Difference]: With dead ends: 46177 [2020-10-14 03:41:31,816 INFO L226 Difference]: Without dead ends: 22914 [2020-10-14 03:41:31,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:41:31,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22914 states. [2020-10-14 03:41:32,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22914 to 22232. [2020-10-14 03:41:32,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22232 states. [2020-10-14 03:41:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22232 states to 22232 states and 23466 transitions. [2020-10-14 03:41:32,207 INFO L78 Accepts]: Start accepts. Automaton has 22232 states and 23466 transitions. Word has length 743 [2020-10-14 03:41:32,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:32,208 INFO L479 AbstractCegarLoop]: Abstraction has 22232 states and 23466 transitions. [2020-10-14 03:41:32,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:41:32,209 INFO L276 IsEmpty]: Start isEmpty. Operand 22232 states and 23466 transitions. [2020-10-14 03:41:32,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2020-10-14 03:41:32,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:32,229 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:41:32,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 03:41:32,229 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:32,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:32,230 INFO L82 PathProgramCache]: Analyzing trace with hash -929544061, now seen corresponding path program 1 times [2020-10-14 03:41:32,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:32,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842153283] [2020-10-14 03:41:32,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:32,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:33,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:34,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:34,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 762 [2020-10-14 03:41:34,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:41:34,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2309 [2020-10-14 03:41:34,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:34,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 03:41:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-14 03:41:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 345 [2020-10-14 03:41:34,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:34,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:34,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:34,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:34,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:34,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:34,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:41:34,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:34,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:34,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:34,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:34,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:34,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:34,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:34,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:34,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:34,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:41:34,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:34,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 03:41:34,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:34,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:34,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:34,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:34,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:34,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:34,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 03:41:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:35,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:35,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:35,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 03:41:35,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:35,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 03:41:35,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:35,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 03:41:35,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:35,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 03:41:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:35,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:35,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:35,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 03:41:35,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:35,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-14 03:41:35,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:35,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:41:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:35,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 278 [2020-10-14 03:41:35,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:36,128 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 524 proven. 61 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-14 03:41:36,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842153283] [2020-10-14 03:41:36,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:36,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:41:36,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185958740] [2020-10-14 03:41:36,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:41:36,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:36,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:41:36,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:41:36,131 INFO L87 Difference]: Start difference. First operand 22232 states and 23466 transitions. Second operand 8 states. [2020-10-14 03:41:42,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:42,033 INFO L93 Difference]: Finished difference Result 50230 states and 52949 transitions. [2020-10-14 03:41:42,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 03:41:42,034 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 748 [2020-10-14 03:41:42,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:42,090 INFO L225 Difference]: With dead ends: 50230 [2020-10-14 03:41:42,090 INFO L226 Difference]: Without dead ends: 27635 [2020-10-14 03:41:42,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-14 03:41:42,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27635 states. [2020-10-14 03:41:42,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27635 to 24257. [2020-10-14 03:41:42,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24257 states. [2020-10-14 03:41:42,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24257 states to 24257 states and 25544 transitions. [2020-10-14 03:41:42,530 INFO L78 Accepts]: Start accepts. Automaton has 24257 states and 25544 transitions. Word has length 748 [2020-10-14 03:41:42,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:42,532 INFO L479 AbstractCegarLoop]: Abstraction has 24257 states and 25544 transitions. [2020-10-14 03:41:42,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:41:42,532 INFO L276 IsEmpty]: Start isEmpty. Operand 24257 states and 25544 transitions. [2020-10-14 03:41:42,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2020-10-14 03:41:42,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:42,552 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:41:42,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 03:41:42,552 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:42,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:42,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1407338454, now seen corresponding path program 1 times [2020-10-14 03:41:42,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:42,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210896195] [2020-10-14 03:41:42,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:42,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:44,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:44,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:44,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 817 [2020-10-14 03:41:44,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:41:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2154 [2020-10-14 03:41:44,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:44,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:44,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 03:41:44,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-14 03:41:44,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-14 03:41:44,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:41:45,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:45,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:45,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:45,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:45,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:45,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:41:45,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:45,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:45,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:45,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:45,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:45,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:45,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:45,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:45,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:45,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:41:45,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:45,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 03:41:45,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:45,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:45,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:45,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:45,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 03:41:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:45,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:45,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:45,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 03:41:45,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:45,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 03:41:45,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:45,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:45,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:45,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 03:41:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:45,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:45,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:45,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 03:41:45,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:45,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 03:41:45,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:45,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:45,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:45,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:45,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-14 03:41:45,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:45,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-14 03:41:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:45,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:45,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:45,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:41:45,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:45,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 03:41:45,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:45,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:41:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:41:45,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 514 proven. 62 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2020-10-14 03:41:46,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210896195] [2020-10-14 03:41:46,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:46,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:41:46,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631634539] [2020-10-14 03:41:46,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:41:46,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:46,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:41:46,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:41:46,082 INFO L87 Difference]: Start difference. First operand 24257 states and 25544 transitions. Second operand 8 states. [2020-10-14 03:41:51,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:51,186 INFO L93 Difference]: Finished difference Result 24943 states and 26240 transitions. [2020-10-14 03:41:51,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:41:51,187 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 801 [2020-10-14 03:41:51,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:51,240 INFO L225 Difference]: With dead ends: 24943 [2020-10-14 03:41:51,241 INFO L226 Difference]: Without dead ends: 24600 [2020-10-14 03:41:51,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:41:51,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24600 states. [2020-10-14 03:41:51,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24600 to 24257. [2020-10-14 03:41:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24257 states. [2020-10-14 03:41:51,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24257 states to 24257 states and 25538 transitions. [2020-10-14 03:41:51,512 INFO L78 Accepts]: Start accepts. Automaton has 24257 states and 25538 transitions. Word has length 801 [2020-10-14 03:41:51,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:51,513 INFO L479 AbstractCegarLoop]: Abstraction has 24257 states and 25538 transitions. [2020-10-14 03:41:51,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:41:51,513 INFO L276 IsEmpty]: Start isEmpty. Operand 24257 states and 25538 transitions. [2020-10-14 03:41:51,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2020-10-14 03:41:51,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:51,531 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:41:51,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 03:41:51,531 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:51,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:51,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1705625522, now seen corresponding path program 1 times [2020-10-14 03:41:51,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:51,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465933467] [2020-10-14 03:41:51,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:51,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:53,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:53,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:53,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 909 [2020-10-14 03:41:53,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:41:53,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2159 [2020-10-14 03:41:53,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:53,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:53,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 03:41:53,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-14 03:41:53,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-14 03:41:53,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:54,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:54,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:54,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:54,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:54,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:54,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:41:54,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:54,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:54,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:54,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:54,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:54,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:54,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:41:54,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:54,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 03:41:54,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:54,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:54,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:54,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 03:41:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:54,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:54,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:54,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 03:41:54,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:54,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 03:41:54,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:54,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:54,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:54,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:54,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:54,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:54,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-14 03:41:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:54,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:54,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:54,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 03:41:54,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:54,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 03:41:54,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:54,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:54,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:54,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:54,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 03:41:54,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:54,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-14 03:41:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:54,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:54,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:54,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 03:41:54,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:54,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-14 03:41:54,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:54,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:54,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:41:54,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:54,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 03:41:54,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 738 proven. 66 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2020-10-14 03:41:55,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465933467] [2020-10-14 03:41:55,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:55,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 03:41:55,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381902351] [2020-10-14 03:41:55,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 03:41:55,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:55,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 03:41:55,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 03:41:55,726 INFO L87 Difference]: Start difference. First operand 24257 states and 25538 transitions. Second operand 9 states. [2020-10-14 03:42:05,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:42:05,695 INFO L93 Difference]: Finished difference Result 52261 states and 55008 transitions. [2020-10-14 03:42:05,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 03:42:05,697 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 893 [2020-10-14 03:42:05,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:42:05,740 INFO L225 Difference]: With dead ends: 52261 [2020-10-14 03:42:05,740 INFO L226 Difference]: Without dead ends: 28004 [2020-10-14 03:42:05,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2020-10-14 03:42:05,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28004 states. [2020-10-14 03:42:06,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28004 to 25972. [2020-10-14 03:42:06,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25972 states. [2020-10-14 03:42:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25972 states to 25972 states and 27357 transitions. [2020-10-14 03:42:06,029 INFO L78 Accepts]: Start accepts. Automaton has 25972 states and 27357 transitions. Word has length 893 [2020-10-14 03:42:06,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:42:06,030 INFO L479 AbstractCegarLoop]: Abstraction has 25972 states and 27357 transitions. [2020-10-14 03:42:06,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 03:42:06,030 INFO L276 IsEmpty]: Start isEmpty. Operand 25972 states and 27357 transitions. [2020-10-14 03:42:06,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2020-10-14 03:42:06,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:42:06,045 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2020-10-14 03:42:06,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 03:42:06,046 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:42:06,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:42:06,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1060772915, now seen corresponding path program 1 times [2020-10-14 03:42:06,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:42:06,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839860258] [2020-10-14 03:42:06,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:42:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:06,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:07,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:07,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 970 [2020-10-14 03:42:07,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:07,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 972 [2020-10-14 03:42:07,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:07,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:42:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-14 03:42:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-14 03:42:07,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:07,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:42:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:07,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:07,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:07,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:42:07,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:07,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:42:07,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:07,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:07,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:07,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:42:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:07,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:07,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:07,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:42:07,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:07,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 03:42:07,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:07,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:07,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:07,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:07,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:07,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:07,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 03:42:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:07,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:07,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:07,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 03:42:07,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:07,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 03:42:07,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:07,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:07,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:07,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 03:42:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:07,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:07,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:07,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 03:42:07,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:07,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 03:42:07,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:07,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:42:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:07,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-14 03:42:07,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:07,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-14 03:42:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:07,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:08,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:08,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 03:42:08,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:08,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-14 03:42:08,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:08,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:42:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:42:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 03:42:08,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 864 proven. 2 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2020-10-14 03:42:08,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839860258] [2020-10-14 03:42:08,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:42:08,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:42:08,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822371847] [2020-10-14 03:42:08,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:42:08,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:42:08,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:42:08,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:42:08,979 INFO L87 Difference]: Start difference. First operand 25972 states and 27357 transitions. Second operand 7 states. [2020-10-14 03:42:13,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:42:13,112 INFO L93 Difference]: Finished difference Result 52620 states and 55442 transitions. [2020-10-14 03:42:13,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:42:13,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 954 [2020-10-14 03:42:13,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:42:13,162 INFO L225 Difference]: With dead ends: 52620 [2020-10-14 03:42:13,162 INFO L226 Difference]: Without dead ends: 26993 [2020-10-14 03:42:13,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:42:13,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26993 states. [2020-10-14 03:42:13,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26993 to 26985. [2020-10-14 03:42:13,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26985 states. [2020-10-14 03:42:13,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26985 states to 26985 states and 28374 transitions. [2020-10-14 03:42:13,479 INFO L78 Accepts]: Start accepts. Automaton has 26985 states and 28374 transitions. Word has length 954 [2020-10-14 03:42:13,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:42:13,480 INFO L479 AbstractCegarLoop]: Abstraction has 26985 states and 28374 transitions. [2020-10-14 03:42:13,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:42:13,480 INFO L276 IsEmpty]: Start isEmpty. Operand 26985 states and 28374 transitions. [2020-10-14 03:42:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2020-10-14 03:42:13,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:42:13,499 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:42:13,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 03:42:13,499 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:42:13,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:42:13,499 INFO L82 PathProgramCache]: Analyzing trace with hash 445552986, now seen corresponding path program 1 times [2020-10-14 03:42:13,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:42:13,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877680636] [2020-10-14 03:42:13,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:42:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:13,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:14,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:14,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:18,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:18,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1009 [2020-10-14 03:42:18,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:42:18,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-14 03:42:18,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:18,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:42:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-10-14 03:42:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-14 03:42:18,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:18,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:42:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:18,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:18,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:18,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:42:18,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:18,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:42:18,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:18,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:18,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:18,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:42:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:18,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:18,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:18,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:42:18,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:18,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 03:42:18,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:18,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:18,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:18,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:18,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:18,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:18,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 03:42:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:18,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:19,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:19,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 03:42:19,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:19,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 03:42:19,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:19,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:19,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:42:19,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:19,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 03:42:19,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:19,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-14 03:42:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:19,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:19,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:19,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 03:42:19,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:19,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-14 03:42:19,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:19,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:19,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:42:19,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:42:19,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 03:42:19,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:19,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2020-10-14 03:42:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:19,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:19,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:19,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 03:42:19,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:19,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 03:42:19,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:19,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-14 03:42:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:19,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 648 proven. 248 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2020-10-14 03:42:21,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877680636] [2020-10-14 03:42:21,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:42:21,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:42:21,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28045626] [2020-10-14 03:42:21,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:42:21,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:42:21,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:42:21,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:42:21,152 INFO L87 Difference]: Start difference. First operand 26985 states and 28374 transitions. Second operand 7 states. [2020-10-14 03:42:25,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:42:25,146 INFO L93 Difference]: Finished difference Result 54306 states and 57102 transitions. [2020-10-14 03:42:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:42:25,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 993 [2020-10-14 03:42:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:42:25,194 INFO L225 Difference]: With dead ends: 54306 [2020-10-14 03:42:25,194 INFO L226 Difference]: Without dead ends: 27666 [2020-10-14 03:42:25,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:42:25,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27666 states. [2020-10-14 03:42:25,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27666 to 27321. [2020-10-14 03:42:25,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27321 states. [2020-10-14 03:42:25,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27321 states to 27321 states and 28692 transitions. [2020-10-14 03:42:25,490 INFO L78 Accepts]: Start accepts. Automaton has 27321 states and 28692 transitions. Word has length 993 [2020-10-14 03:42:25,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:42:25,491 INFO L479 AbstractCegarLoop]: Abstraction has 27321 states and 28692 transitions. [2020-10-14 03:42:25,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:42:25,491 INFO L276 IsEmpty]: Start isEmpty. Operand 27321 states and 28692 transitions. [2020-10-14 03:42:25,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1128 [2020-10-14 03:42:25,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:42:25,508 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 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] [2020-10-14 03:42:25,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 03:42:25,509 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:42:25,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:42:25,509 INFO L82 PathProgramCache]: Analyzing trace with hash 2023067315, now seen corresponding path program 1 times [2020-10-14 03:42:25,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:42:25,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745200642] [2020-10-14 03:42:25,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:42:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:25,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:26,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:26,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:28,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:30,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:30,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1145 [2020-10-14 03:42:30,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:42:30,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 03:42:30,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:30,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:30,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:42:30,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1078 [2020-10-14 03:42:30,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:42:30,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:30,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:42:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:30,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:30,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:30,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:42:30,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:30,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:42:30,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:30,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:30,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:30,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:30,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:30,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:30,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:42:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:30,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:30,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:30,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:42:30,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:30,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 03:42:30,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:30,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:30,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:30,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:30,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:30,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:30,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 03:42:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:30,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:31,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:31,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-14 03:42:31,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:31,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 03:42:31,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:31,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:31,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:31,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:42:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:31,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:31,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:31,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 03:42:31,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:31,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:42:31,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:31,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:31,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:31,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:31,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:31,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:31,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-10-14 03:42:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:31,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:31,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:31,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 03:42:31,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:31,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 03:42:31,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:31,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:31,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:31,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:31,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:31,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:31,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-14 03:42:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:31,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:31,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:31,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 03:42:31,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:31,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 03:42:31,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:31,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:42:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-14 03:42:31,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:32,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1731 backedges. 245 proven. 4 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2020-10-14 03:42:32,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745200642] [2020-10-14 03:42:32,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:42:32,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:42:32,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426890531] [2020-10-14 03:42:32,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:42:32,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:42:32,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:42:32,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:42:32,007 INFO L87 Difference]: Start difference. First operand 27321 states and 28692 transitions. Second operand 5 states. [2020-10-14 03:42:34,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:42:34,959 INFO L93 Difference]: Finished difference Result 54293 states and 57034 transitions. [2020-10-14 03:42:34,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:42:34,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1127 [2020-10-14 03:42:34,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:42:34,999 INFO L225 Difference]: With dead ends: 54293 [2020-10-14 03:42:34,999 INFO L226 Difference]: Without dead ends: 27317 [2020-10-14 03:42:35,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:42:35,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27317 states. [2020-10-14 03:42:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27317 to 26639. [2020-10-14 03:42:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26639 states. [2020-10-14 03:42:35,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26639 states to 26639 states and 27636 transitions. [2020-10-14 03:42:35,278 INFO L78 Accepts]: Start accepts. Automaton has 26639 states and 27636 transitions. Word has length 1127 [2020-10-14 03:42:35,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:42:35,279 INFO L479 AbstractCegarLoop]: Abstraction has 26639 states and 27636 transitions. [2020-10-14 03:42:35,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:42:35,279 INFO L276 IsEmpty]: Start isEmpty. Operand 26639 states and 27636 transitions. [2020-10-14 03:42:35,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1271 [2020-10-14 03:42:35,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:42:35,307 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 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] [2020-10-14 03:42:35,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 03:42:35,308 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:42:35,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:42:35,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1393324818, now seen corresponding path program 1 times [2020-10-14 03:42:35,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:42:35,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812096812] [2020-10-14 03:42:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:42:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:35,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:35,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:37,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:40,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:40,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1290 [2020-10-14 03:42:40,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:42:40,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5222 [2020-10-14 03:42:40,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:40,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:40,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:42:40,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-14 03:42:40,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 298 [2020-10-14 03:42:40,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:40,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:42:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:40,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:40,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:40,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:42:40,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:40,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:42:40,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:40,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:40,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:40,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:42:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:40,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:40,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:40,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:42:40,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:40,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 03:42:40,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:40,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:40,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:42:40,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:40,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-14 03:42:40,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:41,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 03:42:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:41,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:41,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:41,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-14 03:42:41,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:41,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-14 03:42:41,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:41,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:41,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:42:41,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:42:41,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 299 [2020-10-14 03:42:41,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:41,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:42:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:41,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:41,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:41,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 03:42:41,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:41,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 03:42:41,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:41,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:41,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:42:41,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:42:41,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 03:42:41,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:41,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-10-14 03:42:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:41,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:41,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:41,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 03:42:41,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:41,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 03:42:41,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:41,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:41,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:41,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-14 03:42:41,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:41,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:41,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-14 03:42:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:41,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:41,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:41,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 03:42:41,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:41,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 03:42:41,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:41,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:41,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:41,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-14 03:42:41,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:41,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:41,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1068 [2020-10-14 03:42:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:42,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:42,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:42,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:42:42,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:42,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 03:42:42,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:42,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:42,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:42,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-10-14 03:42:42,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:42,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:43,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 548 proven. 661 refuted. 0 times theorem prover too weak. 1154 trivial. 0 not checked. [2020-10-14 03:42:43,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812096812] [2020-10-14 03:42:43,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:42:43,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:42:43,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168485725] [2020-10-14 03:42:43,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:42:43,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:42:43,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:42:43,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:42:43,158 INFO L87 Difference]: Start difference. First operand 26639 states and 27636 transitions. Second operand 8 states. [2020-10-14 03:42:47,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:42:47,172 INFO L93 Difference]: Finished difference Result 53611 states and 55647 transitions. [2020-10-14 03:42:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:42:47,173 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1270 [2020-10-14 03:42:47,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:42:47,213 INFO L225 Difference]: With dead ends: 53611 [2020-10-14 03:42:47,214 INFO L226 Difference]: Without dead ends: 27317 [2020-10-14 03:42:47,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:42:47,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27317 states. [2020-10-14 03:42:47,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27317 to 27313. [2020-10-14 03:42:47,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27313 states. [2020-10-14 03:42:47,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27313 states to 27313 states and 28334 transitions. [2020-10-14 03:42:47,487 INFO L78 Accepts]: Start accepts. Automaton has 27313 states and 28334 transitions. Word has length 1270 [2020-10-14 03:42:47,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:42:47,487 INFO L479 AbstractCegarLoop]: Abstraction has 27313 states and 28334 transitions. [2020-10-14 03:42:47,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:42:47,488 INFO L276 IsEmpty]: Start isEmpty. Operand 27313 states and 28334 transitions. [2020-10-14 03:42:47,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1379 [2020-10-14 03:42:47,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:42:47,510 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 03:42:47,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 03:42:47,510 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:42:47,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:42:47,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1779053666, now seen corresponding path program 1 times [2020-10-14 03:42:47,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:42:47,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692761740] [2020-10-14 03:42:47,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:42:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:47,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:49,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:50,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:50,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1400 [2020-10-14 03:42:50,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:42:50,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2312 [2020-10-14 03:42:50,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:50,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 03:42:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1188 [2020-10-14 03:42:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-14 03:42:50,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:50,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:42:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:50,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:50,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:50,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:42:50,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:50,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:42:50,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:50,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:50,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:50,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:50,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:50,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:50,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:42:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:50,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:50,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:50,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:42:50,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 03:42:50,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:50,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:50,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 03:42:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:50,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:50,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:50,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 03:42:50,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:50,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 03:42:50,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:50,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:50,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:50,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:50,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:50,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:50,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-14 03:42:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:50,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:50,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:50,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-14 03:42:50,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:50,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 03:42:50,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:50,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:50,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:50,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:42:50,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:42:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:50,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:50,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:50,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 03:42:50,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:50,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:42:50,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:50,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:50,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:50,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:50,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:50,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:50,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 651 [2020-10-14 03:42:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:50,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:50,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:50,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 03:42:50,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:50,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 03:42:50,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:50,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:50,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:50,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:50,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:50,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:50,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 900 [2020-10-14 03:42:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:50,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:50,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:50,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 03:42:50,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:50,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 03:42:50,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:50,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:42:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-14 03:42:50,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:50,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1176 [2020-10-14 03:42:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:50,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:50,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:42:50,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:50,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 03:42:50,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:50,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:42:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:42:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 03:42:50,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2947 backedges. 975 proven. 64 refuted. 0 times theorem prover too weak. 1908 trivial. 0 not checked. [2020-10-14 03:42:51,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692761740] [2020-10-14 03:42:51,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:42:51,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:42:51,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863698692] [2020-10-14 03:42:51,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:42:51,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:42:51,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:42:51,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:42:51,871 INFO L87 Difference]: Start difference. First operand 27313 states and 28334 transitions. Second operand 8 states.