/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/Problem12_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:22:09,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:22:09,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:22:09,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:22:09,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:22:09,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:22:09,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:22:09,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:22:09,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:22:09,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:22:09,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:22:09,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:22:09,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:22:09,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:22:09,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:22:09,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:22:09,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:22:09,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:22:09,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:22:09,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:22:09,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:22:09,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:22:09,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:22:09,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:22:09,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:22:09,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:22:09,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:22:09,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:22:09,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:22:09,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:22:09,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:22:09,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:22:09,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:22:09,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:22:09,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:22:09,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:22:09,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:22:09,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:22:09,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:22:09,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:22:09,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:22:09,960 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 08:22:10,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:22:10,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:22:10,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:22:10,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:22:10,010 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:22:10,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:22:10,010 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:22:10,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:22:10,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:22:10,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:22:10,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:22:10,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:22:10,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:22:10,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:22:10,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:22:10,014 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:22:10,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:22:10,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:22:10,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:22:10,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:22:10,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:22:10,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:22:10,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:22:10,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:22:10,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:22:10,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:22:10,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:22:10,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:22:10,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:22:10,017 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 08:22:10,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:22:10,318 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:22:10,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:22:10,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:22:10,324 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:22:10,325 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label37.c [2020-10-13 08:22:10,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58d1f4ff4/f814377fbf0e4555921173f722936835/FLAGb470609cd [2020-10-13 08:22:11,242 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:22:11,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label37.c [2020-10-13 08:22:11,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58d1f4ff4/f814377fbf0e4555921173f722936835/FLAGb470609cd [2020-10-13 08:22:11,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58d1f4ff4/f814377fbf0e4555921173f722936835 [2020-10-13 08:22:11,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:22:11,760 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:22:11,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:22:11,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:22:11,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:22:11,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:22:11" (1/1) ... [2020-10-13 08:22:11,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177c5926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:11, skipping insertion in model container [2020-10-13 08:22:11,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:22:11" (1/1) ... [2020-10-13 08:22:11,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:22:11,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:22:13,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:22:13,384 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:22:14,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:22:14,184 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:22:14,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:14 WrapperNode [2020-10-13 08:22:14,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:22:14,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:22:14,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:22:14,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:22:14,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:14" (1/1) ... [2020-10-13 08:22:14,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:14" (1/1) ... [2020-10-13 08:22:14,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:14" (1/1) ... [2020-10-13 08:22:14,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:14" (1/1) ... [2020-10-13 08:22:14,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:14" (1/1) ... [2020-10-13 08:22:14,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:14" (1/1) ... [2020-10-13 08:22:14,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:14" (1/1) ... [2020-10-13 08:22:14,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:22:14,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:22:14,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:22:14,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:22:14,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:14" (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 08:22:14,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:22:14,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:22:14,575 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:22:14,575 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:22:14,575 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:22:14,576 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:22:14,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:22:14,576 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:22:14,576 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:22:14,576 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:22:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:22:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:22:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:22:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:22:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:22:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:22:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:22:20,032 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:22:20,032 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:22:20,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:22:20 BoogieIcfgContainer [2020-10-13 08:22:20,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:22:20,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:22:20,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:22:20,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:22:20,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:22:11" (1/3) ... [2020-10-13 08:22:20,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f87d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:22:20, skipping insertion in model container [2020-10-13 08:22:20,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:14" (2/3) ... [2020-10-13 08:22:20,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f87d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:22:20, skipping insertion in model container [2020-10-13 08:22:20,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:22:20" (3/3) ... [2020-10-13 08:22:20,058 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label37.c [2020-10-13 08:22:20,071 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:22:20,082 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:22:20,103 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:22:20,133 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:22:20,134 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:22:20,134 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:22:20,134 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:22:20,134 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:22:20,134 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:22:20,134 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:22:20,135 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:22:20,173 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:22:20,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 08:22:20,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:20,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:22:20,184 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:20,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:20,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1531102306, now seen corresponding path program 1 times [2020-10-13 08:22:20,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:20,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848566660] [2020-10-13 08:22:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:20,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:20,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:20,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 08:22:20,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:20,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-13 08:22:20,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:20,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:22:20,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:22:20,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 08:22:20,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:22:20,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:20,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:20,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:20,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:20,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:20,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 08:22:20,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:20,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:20,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:20,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:22:20,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:20,845 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 08:22:20,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848566660] [2020-10-13 08:22:20,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:22:20,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:22:20,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339719979] [2020-10-13 08:22:20,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:22:20,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:20,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:22:20,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:22:20,877 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:22:29,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:29,583 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-13 08:22:29,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:22:29,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-13 08:22:29,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:29,630 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:22:29,630 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:22:29,639 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 [2020-10-13 08:22:29,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:22:29,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:22:29,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:22:29,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-13 08:22:29,834 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 19 [2020-10-13 08:22:29,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:29,834 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-13 08:22:29,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:22:29,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-13 08:22:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 08:22:29,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:29,843 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:22:29,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:22:29,844 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:29,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:29,844 INFO L82 PathProgramCache]: Analyzing trace with hash -2072609957, now seen corresponding path program 1 times [2020-10-13 08:22:29,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:29,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537239199] [2020-10-13 08:22:29,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:30,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:30,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:30,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:22:30,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:30,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-13 08:22:30,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:30,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:30,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:22:30,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:22:30,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:30,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:30,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:30,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:30,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:30,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:30,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 08:22:30,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:30,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:30,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:30,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:30,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:30,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:22:30,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:30,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 08:22:30,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:22:30,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 08:22:30,643 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:22:30,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537239199] [2020-10-13 08:22:30,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:30,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:22:30,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262511598] [2020-10-13 08:22:30,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:22:30,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:30,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:22:30,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:22:30,647 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-13 08:22:39,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:39,824 INFO L93 Difference]: Finished difference Result 4672 states and 7649 transitions. [2020-10-13 08:22:39,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:22:39,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 08:22:39,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:39,844 INFO L225 Difference]: With dead ends: 4672 [2020-10-13 08:22:39,844 INFO L226 Difference]: Without dead ends: 3125 [2020-10-13 08:22:39,851 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 [2020-10-13 08:22:39,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-13 08:22:39,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3109. [2020-10-13 08:22:39,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-13 08:22:39,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4247 transitions. [2020-10-13 08:22:39,963 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4247 transitions. Word has length 94 [2020-10-13 08:22:39,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:39,965 INFO L479 AbstractCegarLoop]: Abstraction has 3109 states and 4247 transitions. [2020-10-13 08:22:39,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:22:39,965 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4247 transitions. [2020-10-13 08:22:39,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 08:22:39,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:39,975 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:22:39,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:22:39,975 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:39,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:39,976 INFO L82 PathProgramCache]: Analyzing trace with hash -994224550, now seen corresponding path program 1 times [2020-10-13 08:22:39,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:39,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036215765] [2020-10-13 08:22:39,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:40,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:40,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:40,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:40,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:22:40,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:22:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 956 [2020-10-13 08:22:40,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:40,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 08:22:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:22:40,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:22:41,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:41,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:41,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:41,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:41,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:41,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:22:41,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:41,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:41,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:41,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:41,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:41,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:41,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:41,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:41,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:22:41,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:41,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 08:22:41,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:41,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:41,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:41,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:22:41,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:22:41,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036215765] [2020-10-13 08:22:41,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:41,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:22:41,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974606494] [2020-10-13 08:22:41,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:22:41,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:41,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:22:41,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:22:41,229 INFO L87 Difference]: Start difference. First operand 3109 states and 4247 transitions. Second operand 5 states. [2020-10-13 08:22:50,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:50,723 INFO L93 Difference]: Finished difference Result 7784 states and 11134 transitions. [2020-10-13 08:22:50,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:22:50,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-13 08:22:50,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:50,765 INFO L225 Difference]: With dead ends: 7784 [2020-10-13 08:22:50,765 INFO L226 Difference]: Without dead ends: 4681 [2020-10-13 08:22:50,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:22:50,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2020-10-13 08:22:50,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4673. [2020-10-13 08:22:50,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4673 states. [2020-10-13 08:22:50,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 6164 transitions. [2020-10-13 08:22:50,942 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 6164 transitions. Word has length 97 [2020-10-13 08:22:50,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:50,943 INFO L479 AbstractCegarLoop]: Abstraction has 4673 states and 6164 transitions. [2020-10-13 08:22:50,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:22:50,943 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 6164 transitions. [2020-10-13 08:22:50,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-13 08:22:50,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:50,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:22:50,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:22:50,952 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:50,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:50,953 INFO L82 PathProgramCache]: Analyzing trace with hash 440245546, now seen corresponding path program 1 times [2020-10-13 08:22:50,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:50,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254773987] [2020-10-13 08:22:50,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:51,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:52,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:52,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 08:22:52,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:22:52,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-10-13 08:22:52,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:52,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:52,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 08:22:52,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:22:52,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:52,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:52,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:52,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:52,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:52,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:52,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:22:52,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:52,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:52,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:22:52,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:52,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:52,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:52,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:22:52,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:52,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 08:22:52,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:52,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:52,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:52,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 08:22:52,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:22:52,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254773987] [2020-10-13 08:22:52,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:52,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:22:52,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406445738] [2020-10-13 08:22:52,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:22:52,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:52,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:22:52,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:22:52,477 INFO L87 Difference]: Start difference. First operand 4673 states and 6164 transitions. Second operand 5 states. [2020-10-13 08:23:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:03,145 INFO L93 Difference]: Finished difference Result 11679 states and 15857 transitions. [2020-10-13 08:23:03,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:23:03,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-13 08:23:03,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:03,182 INFO L225 Difference]: With dead ends: 11679 [2020-10-13 08:23:03,183 INFO L226 Difference]: Without dead ends: 7012 [2020-10-13 08:23:03,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:23:03,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7012 states. [2020-10-13 08:23:03,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7012 to 7004. [2020-10-13 08:23:03,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7004 states. [2020-10-13 08:23:03,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7004 states to 7004 states and 8918 transitions. [2020-10-13 08:23:03,365 INFO L78 Accepts]: Start accepts. Automaton has 7004 states and 8918 transitions. Word has length 137 [2020-10-13 08:23:03,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:03,366 INFO L479 AbstractCegarLoop]: Abstraction has 7004 states and 8918 transitions. [2020-10-13 08:23:03,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:23:03,367 INFO L276 IsEmpty]: Start isEmpty. Operand 7004 states and 8918 transitions. [2020-10-13 08:23:03,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 08:23:03,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:03,369 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:23:03,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:23:03,370 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:03,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:03,370 INFO L82 PathProgramCache]: Analyzing trace with hash 127103319, now seen corresponding path program 1 times [2020-10-13 08:23:03,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:03,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771280369] [2020-10-13 08:23:03,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:03,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:03,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:04,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:04,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 08:23:04,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:23:04,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-10-13 08:23:04,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-13 08:23:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:23:04,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:04,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:04,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:04,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:04,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:04,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:04,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:23:04,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:04,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:04,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:04,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:04,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:04,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:23:04,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:04,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 08:23:04,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:04,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:04,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:04,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 08:23:04,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:04,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:23:04,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771280369] [2020-10-13 08:23:04,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:04,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:23:04,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269627054] [2020-10-13 08:23:04,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:23:04,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:04,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:23:04,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:23:04,621 INFO L87 Difference]: Start difference. First operand 7004 states and 8918 transitions. Second operand 6 states. [2020-10-13 08:23:22,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:22,424 INFO L93 Difference]: Finished difference Result 16342 states and 21675 transitions. [2020-10-13 08:23:22,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:23:22,426 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-10-13 08:23:22,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:22,475 INFO L225 Difference]: With dead ends: 16342 [2020-10-13 08:23:22,475 INFO L226 Difference]: Without dead ends: 9344 [2020-10-13 08:23:22,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:23:22,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9344 states. [2020-10-13 08:23:22,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9344 to 9332. [2020-10-13 08:23:22,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9332 states. [2020-10-13 08:23:22,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9332 states to 9332 states and 11800 transitions. [2020-10-13 08:23:22,735 INFO L78 Accepts]: Start accepts. Automaton has 9332 states and 11800 transitions. Word has length 140 [2020-10-13 08:23:22,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:22,736 INFO L479 AbstractCegarLoop]: Abstraction has 9332 states and 11800 transitions. [2020-10-13 08:23:22,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:23:22,736 INFO L276 IsEmpty]: Start isEmpty. Operand 9332 states and 11800 transitions. [2020-10-13 08:23:22,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-13 08:23:22,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:22,745 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:22,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:23:22,746 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:22,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:22,746 INFO L82 PathProgramCache]: Analyzing trace with hash 894191762, now seen corresponding path program 1 times [2020-10-13 08:23:22,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:22,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539604530] [2020-10-13 08:23:22,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:22,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:23,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:23,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:24,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:26,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:26,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:26,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-13 08:23:26,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:23:26,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4083 [2020-10-13 08:23:26,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:26,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:26,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-10-13 08:23:26,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:23:26,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:26,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:26,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:26,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:26,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:26,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:26,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:23:26,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:26,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:26,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:26,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:27,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:27,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:23:27,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:27,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 08:23:27,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:27,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:27,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:27,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:27,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:27,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 08:23:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:27,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:27,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:27,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:23:27,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:27,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 08:23:27,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:27,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:27,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:27,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 08:23:27,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-13 08:23:27,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539604530] [2020-10-13 08:23:27,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:27,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:23:27,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808494656] [2020-10-13 08:23:27,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:23:27,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:27,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:23:27,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:23:27,244 INFO L87 Difference]: Start difference. First operand 9332 states and 11800 transitions. Second operand 5 states. [2020-10-13 08:23:40,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:40,467 INFO L93 Difference]: Finished difference Result 27979 states and 36206 transitions. [2020-10-13 08:23:40,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:23:40,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-10-13 08:23:40,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:40,567 INFO L225 Difference]: With dead ends: 27979 [2020-10-13 08:23:40,567 INFO L226 Difference]: Without dead ends: 18653 [2020-10-13 08:23:40,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:23:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18653 states. [2020-10-13 08:23:41,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18653 to 18641. [2020-10-13 08:23:41,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18641 states. [2020-10-13 08:23:41,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18641 states to 18641 states and 23131 transitions. [2020-10-13 08:23:41,089 INFO L78 Accepts]: Start accepts. Automaton has 18641 states and 23131 transitions. Word has length 207 [2020-10-13 08:23:41,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:41,090 INFO L479 AbstractCegarLoop]: Abstraction has 18641 states and 23131 transitions. [2020-10-13 08:23:41,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:23:41,090 INFO L276 IsEmpty]: Start isEmpty. Operand 18641 states and 23131 transitions. [2020-10-13 08:23:41,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-13 08:23:41,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:41,098 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:23:41,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:23:41,098 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:41,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:41,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1559254326, now seen corresponding path program 1 times [2020-10-13 08:23:41,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:41,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112921456] [2020-10-13 08:23:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:41,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:41,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:42,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:42,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-13 08:23:42,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:23:42,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1164 [2020-10-13 08:23:42,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:42,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:42,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-13 08:23:42,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:23:42,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:42,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:42,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:42,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:42,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:42,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:42,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:23:42,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:42,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:42,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:42,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:42,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:42,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 08:23:42,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:42,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-13 08:23:42,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:42,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-13 08:23:42,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:23:42,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112921456] [2020-10-13 08:23:42,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:42,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:23:42,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594948432] [2020-10-13 08:23:42,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:23:42,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:42,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:23:42,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:23:42,934 INFO L87 Difference]: Start difference. First operand 18641 states and 23131 transitions. Second operand 5 states. [2020-10-13 08:23:59,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:59,006 INFO L93 Difference]: Finished difference Result 55900 states and 71212 transitions. [2020-10-13 08:23:59,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:23:59,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-13 08:23:59,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:59,142 INFO L225 Difference]: With dead ends: 55900 [2020-10-13 08:23:59,143 INFO L226 Difference]: Without dead ends: 37265 [2020-10-13 08:23:59,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:23:59,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37265 states. [2020-10-13 08:23:59,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37265 to 37244. [2020-10-13 08:23:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37244 states. [2020-10-13 08:23:59,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37244 states to 37244 states and 46252 transitions. [2020-10-13 08:23:59,991 INFO L78 Accepts]: Start accepts. Automaton has 37244 states and 46252 transitions. Word has length 217 [2020-10-13 08:23:59,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:59,992 INFO L479 AbstractCegarLoop]: Abstraction has 37244 states and 46252 transitions. [2020-10-13 08:23:59,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:23:59,992 INFO L276 IsEmpty]: Start isEmpty. Operand 37244 states and 46252 transitions. [2020-10-13 08:24:00,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-13 08:24:00,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:00,008 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:24:00,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:24:00,009 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:00,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:00,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1268053747, now seen corresponding path program 1 times [2020-10-13 08:24:00,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:00,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066511655] [2020-10-13 08:24:00,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:00,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:01,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:01,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:02,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:03,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:05,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:05,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-13 08:24:05,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:24:05,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 08:24:05,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:05,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:24:05,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 253 [2020-10-13 08:24:05,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:24:05,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:05,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:05,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:05,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:05,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:05,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:05,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:24:05,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:05,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:05,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:05,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:05,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:05,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:24:05,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:05,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 08:24:05,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:05,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:05,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:05,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:05,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:05,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 08:24:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:05,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:05,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:05,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:24:05,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 08:24:05,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 08:24:05,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-13 08:24:05,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066511655] [2020-10-13 08:24:05,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:05,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:24:05,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581446328] [2020-10-13 08:24:05,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:24:05,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:05,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:24:05,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:24:05,734 INFO L87 Difference]: Start difference. First operand 37244 states and 46252 transitions. Second operand 5 states. [2020-10-13 08:24:18,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:18,931 INFO L93 Difference]: Finished difference Result 74514 states and 92712 transitions. [2020-10-13 08:24:18,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:24:18,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-13 08:24:18,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:19,144 INFO L225 Difference]: With dead ends: 74514 [2020-10-13 08:24:19,144 INFO L226 Difference]: Without dead ends: 37265 [2020-10-13 08:24:19,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:24:19,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37265 states. [2020-10-13 08:24:19,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37265 to 37244. [2020-10-13 08:24:19,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37244 states. [2020-10-13 08:24:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37244 states to 37244 states and 46250 transitions. [2020-10-13 08:24:19,992 INFO L78 Accepts]: Start accepts. Automaton has 37244 states and 46250 transitions. Word has length 260 [2020-10-13 08:24:19,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:19,993 INFO L479 AbstractCegarLoop]: Abstraction has 37244 states and 46250 transitions. [2020-10-13 08:24:19,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:24:19,993 INFO L276 IsEmpty]: Start isEmpty. Operand 37244 states and 46250 transitions. [2020-10-13 08:24:20,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-13 08:24:20,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:20,025 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:24:20,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:24:20,026 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:20,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:20,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1485352297, now seen corresponding path program 1 times [2020-10-13 08:24:20,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:20,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513952676] [2020-10-13 08:24:20,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:20,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:20,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:22,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:23,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:23,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-13 08:24:23,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:24:23,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3187 [2020-10-13 08:24:23,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:23,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:24:23,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-13 08:24:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 08:24:23,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:23,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:23,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:23,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:23,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:23,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:23,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:24:23,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:23,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:23,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:23,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:23,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:23,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:23,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:23,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:23,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-13 08:24:23,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:23,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-13 08:24:23,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:23,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:23,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:23,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 302 [2020-10-13 08:24:23,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:24:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:24,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:24,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:24,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 08:24:24,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:24,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:24:24,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:24,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 08:24:24,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:24:24,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513952676] [2020-10-13 08:24:24,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:24,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:24:24,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667492551] [2020-10-13 08:24:24,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:24:24,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:24,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:24:24,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:24:24,365 INFO L87 Difference]: Start difference. First operand 37244 states and 46250 transitions. Second operand 5 states. [2020-10-13 08:24:40,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:40,404 INFO L93 Difference]: Finished difference Result 92348 states and 117349 transitions. [2020-10-13 08:24:40,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:24:40,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-10-13 08:24:40,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:40,592 INFO L225 Difference]: With dead ends: 92348 [2020-10-13 08:24:40,592 INFO L226 Difference]: Without dead ends: 55110 [2020-10-13 08:24:40,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:24:40,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55110 states. [2020-10-13 08:24:41,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55110 to 54321. [2020-10-13 08:24:41,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54321 states. [2020-10-13 08:24:41,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54321 states to 54321 states and 68220 transitions. [2020-10-13 08:24:41,503 INFO L78 Accepts]: Start accepts. Automaton has 54321 states and 68220 transitions. Word has length 327 [2020-10-13 08:24:41,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:41,504 INFO L479 AbstractCegarLoop]: Abstraction has 54321 states and 68220 transitions. [2020-10-13 08:24:41,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:24:41,504 INFO L276 IsEmpty]: Start isEmpty. Operand 54321 states and 68220 transitions. [2020-10-13 08:24:41,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-13 08:24:41,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:41,534 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:24:41,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:24:41,534 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:41,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:41,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1080018945, now seen corresponding path program 1 times [2020-10-13 08:24:41,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:41,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177292960] [2020-10-13 08:24:41,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:41,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:42,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:42,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-13 08:24:42,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1054 [2020-10-13 08:24:42,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 08:24:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:24:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 365 [2020-10-13 08:24:42,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:42,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:42,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:42,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:42,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:42,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:42,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:24:42,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:42,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:42,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:42,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:24:42,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:42,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:43,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:43,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:43,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-13 08:24:43,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:43,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-10-13 08:24:43,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:43,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:24:43,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:24:43,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 363 [2020-10-13 08:24:43,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:43,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:24:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:43,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:44,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:44,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:24:44,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 08:24:44,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:24:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:24:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:24:44,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:24:44,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177292960] [2020-10-13 08:24:44,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:24:44,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 08:24:44,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442823902] [2020-10-13 08:24:44,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:24:44,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:44,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:24:44,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:24:44,410 INFO L87 Difference]: Start difference. First operand 54321 states and 68220 transitions. Second operand 8 states. [2020-10-13 08:25:04,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:04,037 INFO L93 Difference]: Finished difference Result 109514 states and 139355 transitions. [2020-10-13 08:25:04,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 08:25:04,039 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 379 [2020-10-13 08:25:04,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:04,219 INFO L225 Difference]: With dead ends: 109514 [2020-10-13 08:25:04,219 INFO L226 Difference]: Without dead ends: 55199 [2020-10-13 08:25:04,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 08:25:04,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55199 states. [2020-10-13 08:25:05,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55199 to 55106. [2020-10-13 08:25:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55106 states. [2020-10-13 08:25:05,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55106 states to 55106 states and 63957 transitions. [2020-10-13 08:25:05,149 INFO L78 Accepts]: Start accepts. Automaton has 55106 states and 63957 transitions. Word has length 379 [2020-10-13 08:25:05,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:05,150 INFO L479 AbstractCegarLoop]: Abstraction has 55106 states and 63957 transitions. [2020-10-13 08:25:05,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:25:05,151 INFO L276 IsEmpty]: Start isEmpty. Operand 55106 states and 63957 transitions. [2020-10-13 08:25:05,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-13 08:25:05,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:05,178 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:25:05,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:25:05,178 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:05,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:05,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1357088473, now seen corresponding path program 1 times [2020-10-13 08:25:05,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:05,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862678198] [2020-10-13 08:25:05,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:05,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:05,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:06,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:08,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:09,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:09,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-13 08:25:09,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:25:09,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4340 [2020-10-13 08:25:09,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:09,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:09,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 383 [2020-10-13 08:25:09,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:25:09,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:09,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:09,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:09,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:09,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:09,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:09,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:25:09,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:09,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:09,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:09,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:09,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:09,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:09,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:09,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:09,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:25:09,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:09,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 08:25:09,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:09,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:09,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:09,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:09,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:09,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 08:25:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:11,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:11,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:11,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-13 08:25:11,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:11,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 08:25:11,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:11,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:11,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:11,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-13 08:25:11,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-13 08:25:11,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862678198] [2020-10-13 08:25:11,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:11,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:25:11,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894739265] [2020-10-13 08:25:11,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:25:11,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:11,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:25:11,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:25:11,423 INFO L87 Difference]: Start difference. First operand 55106 states and 63957 transitions. Second operand 5 states. [2020-10-13 08:25:30,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:30,245 INFO L93 Difference]: Finished difference Result 135920 states and 160251 transitions. [2020-10-13 08:25:30,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:25:30,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 390 [2020-10-13 08:25:30,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:30,497 INFO L225 Difference]: With dead ends: 135920 [2020-10-13 08:25:30,497 INFO L226 Difference]: Without dead ends: 80820 [2020-10-13 08:25:30,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:25:30,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80820 states. [2020-10-13 08:25:31,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80820 to 79246. [2020-10-13 08:25:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79246 states. [2020-10-13 08:25:31,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79246 states to 79246 states and 92005 transitions. [2020-10-13 08:25:31,491 INFO L78 Accepts]: Start accepts. Automaton has 79246 states and 92005 transitions. Word has length 390 [2020-10-13 08:25:31,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:31,492 INFO L479 AbstractCegarLoop]: Abstraction has 79246 states and 92005 transitions. [2020-10-13 08:25:31,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:25:31,492 INFO L276 IsEmpty]: Start isEmpty. Operand 79246 states and 92005 transitions. [2020-10-13 08:25:31,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2020-10-13 08:25:31,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:31,529 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:25:31,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:25:31,529 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:31,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:31,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1810181130, now seen corresponding path program 1 times [2020-10-13 08:25:31,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:31,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568438452] [2020-10-13 08:25:31,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:31,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:32,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:34,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:34,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 514 [2020-10-13 08:25:34,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:25:34,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2581 [2020-10-13 08:25:34,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:25:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:25:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 08:25:34,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:34,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:34,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:34,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:34,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:34,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:34,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:25:34,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:34,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:34,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:25:34,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:34,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:34,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:34,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:25:34,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:34,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 08:25:34,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:25:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-13 08:25:34,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:34,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 08:25:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:34,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:34,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:34,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-13 08:25:34,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:34,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 08:25:34,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:34,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 360 [2020-10-13 08:25:34,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:34,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:34,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:25:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:34,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:34,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:34,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:25:34,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:34,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:25:34,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:34,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:34,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:34,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:34,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 24 proven. 116 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:25:34,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568438452] [2020-10-13 08:25:34,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:34,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:25:34,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88760293] [2020-10-13 08:25:34,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:25:34,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:34,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:25:34,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:25:34,922 INFO L87 Difference]: Start difference. First operand 79246 states and 92005 transitions. Second operand 7 states.