/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=NARROWEST --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/Problem06_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:14:10,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:14:10,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:14:10,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:14:10,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:14:10,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:14:10,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:14:10,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:14:10,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:14:10,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:14:10,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:14:10,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:14:10,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:14:10,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:14:10,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:14:10,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:14:10,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:14:10,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:14:10,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:14:10,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:14:10,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:14:10,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:14:10,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:14:10,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:14:10,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:14:10,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:14:10,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:14:10,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:14:10,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:14:10,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:14:10,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:14:10,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:14:10,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:14:10,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:14:10,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:14:10,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:14:10,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:14:10,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:14:10,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:14:10,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:14:10,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:14:10,979 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 [2020-10-13 07:14:11,009 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:14:11,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:14:11,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:14:11,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:14:11,011 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:14:11,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:14:11,012 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:14:11,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:14:11,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:14:11,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:14:11,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:14:11,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:14:11,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:14:11,019 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:14:11,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:14:11,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:14:11,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:14:11,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:14:11,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:14:11,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:14:11,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:14:11,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:14:11,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:14:11,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:14:11,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:14:11,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:14:11,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:14:11,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:14:11,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:14:11,024 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 07:14:11,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:14:11,347 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:14:11,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:14:11,358 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:14:11,358 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:14:11,359 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label54.c [2020-10-13 07:14:11,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bc82f458/b13065384b56430aa60e66e7bbfc920d/FLAGcf0b20aec [2020-10-13 07:14:12,225 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:14:12,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label54.c [2020-10-13 07:14:12,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bc82f458/b13065384b56430aa60e66e7bbfc920d/FLAGcf0b20aec [2020-10-13 07:14:12,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bc82f458/b13065384b56430aa60e66e7bbfc920d [2020-10-13 07:14:12,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:14:12,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:14:12,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:14:12,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:14:12,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:14:12,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:14:12" (1/1) ... [2020-10-13 07:14:12,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9c96c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:12, skipping insertion in model container [2020-10-13 07:14:12,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:14:12" (1/1) ... [2020-10-13 07:14:12,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:14:12,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:14:15,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:14:15,239 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:14:16,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:14:16,388 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:14:16,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:16 WrapperNode [2020-10-13 07:14:16,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:14:16,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:14:16,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:14:16,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:14:16,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:16" (1/1) ... [2020-10-13 07:14:16,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:16" (1/1) ... [2020-10-13 07:14:16,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:16" (1/1) ... [2020-10-13 07:14:16,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:16" (1/1) ... [2020-10-13 07:14:16,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:16" (1/1) ... [2020-10-13 07:14:16,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:16" (1/1) ... [2020-10-13 07:14:16,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:16" (1/1) ... [2020-10-13 07:14:16,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:14:16,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:14:16,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:14:16,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:14:16,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:16" (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 [2020-10-13 07:14:16,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:14:16,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:14:16,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:14:16,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:14:16,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:14:16,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:14:16,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:14:16,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:14:16,813 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:14:16,813 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:14:16,813 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:14:16,813 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:14:16,813 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:14:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:14:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:14:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:14:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:14:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:14:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:14:23,602 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:14:23,603 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:14:23,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:14:23 BoogieIcfgContainer [2020-10-13 07:14:23,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:14:23,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:14:23,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:14:23,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:14:23,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:14:12" (1/3) ... [2020-10-13 07:14:23,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69194a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:14:23, skipping insertion in model container [2020-10-13 07:14:23,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:16" (2/3) ... [2020-10-13 07:14:23,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69194a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:14:23, skipping insertion in model container [2020-10-13 07:14:23,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:14:23" (3/3) ... [2020-10-13 07:14:23,626 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label54.c [2020-10-13 07:14:23,636 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:14:23,644 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:14:23,657 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:14:23,686 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:14:23,686 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:14:23,686 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:14:23,686 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:14:23,686 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:14:23,687 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:14:23,687 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:14:23,687 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:14:23,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:14:23,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2020-10-13 07:14:23,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:14:23,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:14:23,784 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:14:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:14:23,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1733621080, now seen corresponding path program 1 times [2020-10-13 07:14:23,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:14:23,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663986527] [2020-10-13 07:14:23,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:14:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:14:25,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:14:28,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:14:29,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:14:29,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 995 [2020-10-13 07:14:29,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:14:29,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-13 07:14:29,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:14:29,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:14:29,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:14:29,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:14:29,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 07:14:32,545 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-13 07:14:32,799 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-13 07:14:33,006 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-13 07:14:33,199 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-13 07:14:33,399 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2020-10-13 07:14:33,573 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-13 07:14:33,749 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-13 07:14:33,918 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-13 07:14:34,079 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-13 07:14:34,252 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-13 07:14:34,423 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-13 07:14:34,868 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:14:34,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:14:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:14:34,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:14:34,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:14:34,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:14:34,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:14:34,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 07:14:34,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:14:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:14:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:14:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:14:34,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:14:46,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:14:46,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663986527] [2020-10-13 07:14:46,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:14:46,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 07:14:46,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684771168] [2020-10-13 07:14:46,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:14:46,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:14:46,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:14:46,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:14:46,434 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-13 07:14:46,796 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 07:14:47,333 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-13 07:14:47,902 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-13 07:14:48,551 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 174 [2020-10-13 07:14:51,923 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 173 [2020-10-13 07:14:54,818 WARN L193 SmtUtils]: Spent 888.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 172 [2020-10-13 07:14:56,940 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 163 [2020-10-13 07:14:57,560 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 169 [2020-10-13 07:14:58,416 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 168 [2020-10-13 07:15:06,663 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 161 [2020-10-13 07:15:07,247 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 166 [2020-10-13 07:15:09,684 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 165 [2020-10-13 07:15:16,015 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 159 [2020-10-13 07:15:16,601 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 163 [2020-10-13 07:15:18,738 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 161 [2020-10-13 07:15:29,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:15:29,647 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:15:29,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:15:29,651 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 979 [2020-10-13 07:15:29,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:15:29,693 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:15:29,694 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:15:29,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 07:15:29,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:15:29,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:15:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:15:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:15:29,867 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 979 [2020-10-13 07:15:29,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:15:29,872 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:15:29,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:15:29,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:15:29,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1050 [2020-10-13 07:15:29,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:15:29,938 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:15:29,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:15:29,939 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:15:29,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:15:29,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1802627749, now seen corresponding path program 1 times [2020-10-13 07:15:29,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:15:29,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299288725] [2020-10-13 07:15:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:15:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:15:30,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:15:31,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:15:35,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:15:35,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1067 [2020-10-13 07:15:35,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:15:35,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5156 [2020-10-13 07:15:35,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:15:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:15:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:15:35,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:15:35,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:15:35,926 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:15:35,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:15:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:15:35,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:15:35,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:15:35,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:15:35,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:15:35,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 07:15:35,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:15:35,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:15:35,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:15:35,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:15:35,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:15:36,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:15:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:15:36,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:15:36,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:15:36,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:15:36,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:15:36,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-13 07:15:36,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:15:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:15:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:15:36,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:15:36,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:15:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:15:37,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299288725] [2020-10-13 07:15:37,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:15:37,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:15:37,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574058475] [2020-10-13 07:15:37,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:15:37,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:15:37,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:15:37,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:15:37,581 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:15:37,740 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 07:15:38,786 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 07:15:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:15:56,916 INFO L93 Difference]: Finished difference Result 4485 states and 7524 transitions. [2020-10-13 07:15:56,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 07:15:56,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1049 [2020-10-13 07:15:56,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:15:56,942 INFO L225 Difference]: With dead ends: 4485 [2020-10-13 07:15:56,942 INFO L226 Difference]: Without dead ends: 3226 [2020-10-13 07:15:56,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 07:15:56,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2020-10-13 07:15:57,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 3154. [2020-10-13 07:15:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2020-10-13 07:15:57,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 4665 transitions. [2020-10-13 07:15:57,055 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 4665 transitions. Word has length 1049 [2020-10-13 07:15:57,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:15:57,056 INFO L479 AbstractCegarLoop]: Abstraction has 3154 states and 4665 transitions. [2020-10-13 07:15:57,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:15:57,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 4665 transitions. [2020-10-13 07:15:57,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1102 [2020-10-13 07:15:57,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:15:57,077 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:15:57,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:15:57,077 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:15:57,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:15:57,078 INFO L82 PathProgramCache]: Analyzing trace with hash 603955586, now seen corresponding path program 1 times [2020-10-13 07:15:57,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:15:57,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020516543] [2020-10-13 07:15:57,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:15:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:15:57,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:15:58,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:02,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:16:02,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1119 [2020-10-13 07:16:02,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:16:02,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 07:16:02,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:16:02,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 07:16:02,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:16:02,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-13 07:16:02,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:16:05,014 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-13 07:16:05,223 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-13 07:16:05,520 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 91 [2020-10-13 07:16:05,932 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 91 [2020-10-13 07:16:06,322 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 88 [2020-10-13 07:16:06,580 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 72 [2020-10-13 07:16:06,744 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2020-10-13 07:16:07,157 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:16:07,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:16:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:16:07,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:07,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:16:07,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:16:07,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:16:07,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 07:16:07,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:16:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:16:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:16:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:16:07,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:16:07,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:16:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:16:07,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:16:07,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:16:07,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:16:07,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:16:07,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-13 07:16:07,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:16:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:16:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:16:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:16:07,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:16:07,991 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-13 07:16:08,203 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-10-13 07:16:18,116 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:16:18,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020516543] [2020-10-13 07:16:18,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:16:18,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 07:16:18,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871385621] [2020-10-13 07:16:18,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:16:18,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:16:18,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:16:18,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:16:18,126 INFO L87 Difference]: Start difference. First operand 3154 states and 4665 transitions. Second operand 18 states. [2020-10-13 07:16:18,361 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-13 07:16:20,450 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 75 [2020-10-13 07:16:20,675 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2020-10-13 07:16:21,015 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2020-10-13 07:16:21,822 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 183 [2020-10-13 07:16:22,783 WARN L193 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 203 [2020-10-13 07:16:24,258 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 200 [2020-10-13 07:16:27,264 WARN L193 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 197 [2020-10-13 07:16:35,641 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 163 [2020-10-13 07:16:36,361 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 169 [2020-10-13 07:16:37,688 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 168 [2020-10-13 07:16:46,497 WARN L193 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 167 [2020-10-13 07:16:47,540 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 165 [2020-10-13 07:17:09,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:17:09,464 INFO L93 Difference]: Finished difference Result 8388 states and 13352 transitions. [2020-10-13 07:17:09,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 07:17:09,466 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1101 [2020-10-13 07:17:09,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:17:09,494 INFO L225 Difference]: With dead ends: 8388 [2020-10-13 07:17:09,495 INFO L226 Difference]: Without dead ends: 5994 [2020-10-13 07:17:09,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2020-10-13 07:17:09,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5994 states. [2020-10-13 07:17:09,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5994 to 5902. [2020-10-13 07:17:09,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5902 states. [2020-10-13 07:17:09,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5902 states to 5902 states and 8806 transitions. [2020-10-13 07:17:09,651 INFO L78 Accepts]: Start accepts. Automaton has 5902 states and 8806 transitions. Word has length 1101 [2020-10-13 07:17:09,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:17:09,652 INFO L479 AbstractCegarLoop]: Abstraction has 5902 states and 8806 transitions. [2020-10-13 07:17:09,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:17:09,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5902 states and 8806 transitions. [2020-10-13 07:17:09,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1127 [2020-10-13 07:17:09,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:17:09,718 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:17:09,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:17:09,719 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:17:09,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:17:09,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1261173707, now seen corresponding path program 1 times [2020-10-13 07:17:09,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:17:09,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429990537] [2020-10-13 07:17:09,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:17:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:17:10,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:10,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:15,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:17:15,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1146 [2020-10-13 07:17:15,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:17:15,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 07:17:15,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:17:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 07:17:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:17:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 891 [2020-10-13 07:17:15,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:17:18,249 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-13 07:17:18,444 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-13 07:17:18,632 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-13 07:17:18,832 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-13 07:17:19,032 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-13 07:17:19,239 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-13 07:17:19,470 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-10-13 07:17:19,648 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-13 07:17:19,842 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2020-10-13 07:17:20,061 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-10-13 07:17:20,302 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2020-10-13 07:17:20,514 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2020-10-13 07:17:20,987 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:17:20,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:17:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:17:20,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:21,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:17:21,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:17:21,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:17:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 07:17:21,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:17:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:17:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:17:21,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:17:21,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:17:21,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:17:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:17:21,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:21,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:17:21,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:17:21,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:17:21,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-13 07:17:21,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:17:21,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:17:21,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:17:21,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:17:21,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:17:21,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:17:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:17:21,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:17:22,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:17:22,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 07:17:22,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:17:22,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 07:17:22,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:17:22,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:17:22,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:17:22,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 07:17:22,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 07:17:22,274 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-13 07:17:22,561 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-10-13 07:17:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 8 proven. 157 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 07:17:37,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429990537] [2020-10-13 07:17:37,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:17:37,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 07:17:37,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299407629] [2020-10-13 07:17:37,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 07:17:37,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:17:37,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 07:17:37,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2020-10-13 07:17:37,799 INFO L87 Difference]: Start difference. First operand 5902 states and 8806 transitions. Second operand 25 states. [2020-10-13 07:17:38,087 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 07:17:40,720 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 07:17:41,837 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 103 [2020-10-13 07:17:42,094 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-13 07:17:42,555 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 98 [2020-10-13 07:17:43,316 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 171 [2020-10-13 07:17:44,133 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 179 [2020-10-13 07:17:47,138 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2020-10-13 07:17:49,991 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-10-13 07:17:51,499 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-13 07:17:52,655 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2020-10-13 07:17:53,670 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 157