/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:00:54,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:00:54,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:00:54,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:00:54,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:00:54,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:00:54,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:00:54,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:00:54,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:00:54,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:00:54,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:00:54,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:00:54,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:00:54,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:00:54,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:00:54,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:00:54,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:00:54,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:00:54,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:00:54,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:00:54,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:00:54,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:00:54,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:00:54,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:00:54,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:00:54,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:00:54,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:00:54,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:00:54,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:00:54,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:00:54,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:00:54,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:00:54,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:00:54,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:00:54,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:00:54,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:00:54,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:00:54,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:00:54,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:00:54,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:00:54,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:00:54,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 07:00:54,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:00:54,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:00:54,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:00:54,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:00:54,219 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:00:54,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:00:54,219 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:00:54,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:00:54,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:00:54,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:00:54,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:00:54,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:00:54,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:00:54,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:00:54,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:00:54,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:00:54,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:00:54,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:00:54,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:00:54,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:00:54,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:00:54,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:00:54,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:00:54,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:00:54,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:00:54,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:00:54,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:00:54,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:00:54,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:00:54,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 07:00:54,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:00:54,536 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:00:54,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:00:54,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:00:54,542 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:00:54,542 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label02.c [2020-10-13 07:00:54,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ac899647/169a2a0ae49142a09ba9892288794660/FLAGa5dbca32f [2020-10-13 07:00:55,560 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:00:55,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label02.c [2020-10-13 07:00:55,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ac899647/169a2a0ae49142a09ba9892288794660/FLAGa5dbca32f [2020-10-13 07:00:56,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ac899647/169a2a0ae49142a09ba9892288794660 [2020-10-13 07:00:56,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:00:56,019 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:00:56,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:00:56,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:00:56,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:00:56,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:00:56" (1/1) ... [2020-10-13 07:00:56,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ab3a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:56, skipping insertion in model container [2020-10-13 07:00:56,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:00:56" (1/1) ... [2020-10-13 07:00:56,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:00:56,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:00:58,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:00:58,499 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:00:59,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:00:59,660 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:00:59,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:59 WrapperNode [2020-10-13 07:00:59,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:00:59,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:00:59,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:00:59,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:00:59,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:59" (1/1) ... [2020-10-13 07:00:59,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:59" (1/1) ... [2020-10-13 07:00:59,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:59" (1/1) ... [2020-10-13 07:00:59,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:59" (1/1) ... [2020-10-13 07:00:59,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:59" (1/1) ... [2020-10-13 07:00:59,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:59" (1/1) ... [2020-10-13 07:00:59,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:59" (1/1) ... [2020-10-13 07:01:00,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:01:00,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:01:00,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:01:00,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:01:00,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:01:00,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:01:00,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:01:00,107 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:01:00,108 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:01:00,108 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:01:00,108 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:01:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:01:00,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:01:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:01:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:01:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:01:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:01:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:01:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:01:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:01:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:01:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:01:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:01:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:01:07,046 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:01:07,046 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:01:07,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:01:07 BoogieIcfgContainer [2020-10-13 07:01:07,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:01:07,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:01:07,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:01:07,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:01:07,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:00:56" (1/3) ... [2020-10-13 07:01:07,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab937c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:01:07, skipping insertion in model container [2020-10-13 07:01:07,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:00:59" (2/3) ... [2020-10-13 07:01:07,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab937c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:01:07, skipping insertion in model container [2020-10-13 07:01:07,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:01:07" (3/3) ... [2020-10-13 07:01:07,067 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label02.c [2020-10-13 07:01:07,078 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:01:07,087 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:01:07,103 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:01:07,133 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:01:07,134 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:01:07,134 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:01:07,134 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:01:07,134 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:01:07,134 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:01:07,134 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:01:07,134 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:01:07,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:01:07,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2020-10-13 07:01:07,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:01:07,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:01:07,231 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:01:07,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:01:07,238 INFO L82 PathProgramCache]: Analyzing trace with hash -2019245400, now seen corresponding path program 1 times [2020-10-13 07:01:07,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:01:07,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237060762] [2020-10-13 07:01:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:01:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:01:08,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:12,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:13,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:01:13,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 967 [2020-10-13 07:01:13,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:01:13,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-13 07:01:13,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:01:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:01:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:01:13,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:01:13,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 07:01:16,700 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-13 07:01:16,926 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-13 07:01:17,176 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-13 07:01:17,391 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-13 07:01:17,592 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-13 07:01:17,843 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-13 07:01:18,060 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-13 07:01:18,223 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-13 07:01:18,371 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-13 07:01:18,534 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-13 07:01:18,993 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:01:18,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:01:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:01:19,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:19,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:01:19,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:01:19,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:01:19,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 07:01:19,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:01:19,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:01:19,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:01:19,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:01:19,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:01:29,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:01:29,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237060762] [2020-10-13 07:01:29,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:01:29,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 07:01:29,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095184452] [2020-10-13 07:01:29,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:01:29,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:01:29,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:01:29,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:01:29,062 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-13 07:01:29,411 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 07:01:30,024 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-13 07:01:30,609 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-13 07:01:31,270 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 174 [2020-10-13 07:01:34,698 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 173 [2020-10-13 07:01:37,672 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 172 [2020-10-13 07:01:39,833 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-13 07:01:40,456 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 169 [2020-10-13 07:01:41,294 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 168 [2020-10-13 07:01:49,641 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 161 [2020-10-13 07:01:50,213 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-13 07:01:52,743 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 165 [2020-10-13 07:01:59,416 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 159 [2020-10-13 07:02:00,046 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 163 [2020-10-13 07:02:02,341 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 161 [2020-10-13 07:02:13,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:02:13,550 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:02:13,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:02:13,552 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 951 [2020-10-13 07:02:13,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:02:13,595 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:02:13,596 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:02:13,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 07:02:13,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:02:13,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:02:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:02:13,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:02:13,775 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 951 [2020-10-13 07:02:13,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:02:13,778 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:02:13,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:02:13,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:02:13,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1022 [2020-10-13 07:02:13,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:02:13,818 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:02:13,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:02:13,819 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:02:13,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:02:13,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1596112245, now seen corresponding path program 1 times [2020-10-13 07:02:13,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:02:13,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321828698] [2020-10-13 07:02:13,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:02:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:02:14,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:02:15,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:02:19,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:02:19,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1039 [2020-10-13 07:02:19,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:02:19,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5274 [2020-10-13 07:02:19,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:02:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:02:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:02:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:02:19,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:02:20,004 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:02:20,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:02:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:02:20,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:02:20,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:02:20,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:02:20,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:02:20,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 07:02:20,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:02:20,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:02:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:02:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:02:20,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:02:20,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:02:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:02:20,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:02:20,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:02:20,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:02:20,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:02:20,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-13 07:02:20,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:02:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:02:20,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:02:20,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:02:20,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:02:21,460 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:02:21,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321828698] [2020-10-13 07:02:21,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:02:21,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:02:21,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357244781] [2020-10-13 07:02:21,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:02:21,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:02:21,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:02:21,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:02:21,465 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:02:21,654 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 07:02:22,830 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 07:02:43,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:02:43,114 INFO L93 Difference]: Finished difference Result 4503 states and 7544 transitions. [2020-10-13 07:02:43,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 07:02:43,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1021 [2020-10-13 07:02:43,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:02:43,135 INFO L225 Difference]: With dead ends: 4503 [2020-10-13 07:02:43,135 INFO L226 Difference]: Without dead ends: 3244 [2020-10-13 07:02:43,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 07:02:43,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2020-10-13 07:02:43,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 3163. [2020-10-13 07:02:43,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3163 states. [2020-10-13 07:02:43,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 4675 transitions. [2020-10-13 07:02:43,238 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 4675 transitions. Word has length 1021 [2020-10-13 07:02:43,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:02:43,238 INFO L479 AbstractCegarLoop]: Abstraction has 3163 states and 4675 transitions. [2020-10-13 07:02:43,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:02:43,239 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 4675 transitions. [2020-10-13 07:02:43,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2020-10-13 07:02:43,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:02:43,256 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:02:43,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:02:43,257 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:02:43,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:02:43,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1719693778, now seen corresponding path program 1 times [2020-10-13 07:02:43,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:02:43,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459289649] [2020-10-13 07:02:43,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:02:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:02:44,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:02:44,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:02:48,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:02:48,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1091 [2020-10-13 07:02:48,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:02:48,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 07:02:48,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:02:48,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 07:02:48,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 07:02:48,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 958 [2020-10-13 07:02:48,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:02:49,501 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:02:49,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:02:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:02:49,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:02:49,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:02:49,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:02:49,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:02:49,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 07:02:49,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:02:49,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:02:49,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:02:49,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:02:49,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:02:49,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:02:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:02:49,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:02:49,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:02:49,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:02:49,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:02:49,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 07:02:49,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:02:49,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:02:49,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:02:49,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 07:02:49,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:02:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 118 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:02:50,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459289649] [2020-10-13 07:02:50,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:02:50,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 07:02:50,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542957935] [2020-10-13 07:02:50,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 07:02:50,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:02:50,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 07:02:50,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 07:02:50,801 INFO L87 Difference]: Start difference. First operand 3163 states and 4675 transitions. Second operand 6 states. [2020-10-13 07:02:50,947 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:02:51,538 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 07:03:12,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:03:12,215 INFO L93 Difference]: Finished difference Result 9926 states and 15929 transitions. [2020-10-13 07:03:12,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 07:03:12,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1073 [2020-10-13 07:03:12,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:03:12,256 INFO L225 Difference]: With dead ends: 9926 [2020-10-13 07:03:12,256 INFO L226 Difference]: Without dead ends: 7523 [2020-10-13 07:03:12,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 07:03:12,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7523 states. [2020-10-13 07:03:12,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7523 to 7392. [2020-10-13 07:03:12,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7392 states. [2020-10-13 07:03:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7392 states to 7392 states and 11241 transitions. [2020-10-13 07:03:12,467 INFO L78 Accepts]: Start accepts. Automaton has 7392 states and 11241 transitions. Word has length 1073 [2020-10-13 07:03:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:03:12,468 INFO L479 AbstractCegarLoop]: Abstraction has 7392 states and 11241 transitions. [2020-10-13 07:03:12,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 07:03:12,468 INFO L276 IsEmpty]: Start isEmpty. Operand 7392 states and 11241 transitions. [2020-10-13 07:03:12,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2020-10-13 07:03:12,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:03:12,497 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:03:12,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:03:12,498 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:03:12,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:03:12,499 INFO L82 PathProgramCache]: Analyzing trace with hash -465123769, now seen corresponding path program 1 times [2020-10-13 07:03:12,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:03:12,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149957661] [2020-10-13 07:03:12,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:03:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:03:12,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:13,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:15,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:17,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:03:17,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1101 [2020-10-13 07:03:17,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:03:17,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-13 07:03:17,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:03:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:03:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 07:03:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 07:03:17,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:03:17,997 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:03:17,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:03:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:03:18,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:18,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:03:18,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:03:18,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:03:18,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 07:03:18,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:03:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:03:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:03:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:03:18,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:03:18,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:03:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:03:18,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:18,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:03:18,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:03:18,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:03:18,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 07:03:18,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:03:18,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:03:18,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:03:18,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 07:03:18,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:03:18,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:03:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:03:18,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:18,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:03:18,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 07:03:18,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:03:18,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 07:03:18,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:03:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:03:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:03:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 07:03:18,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:03:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 07:03:18,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149957661] [2020-10-13 07:03:18,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:03:18,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 07:03:18,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753889943] [2020-10-13 07:03:18,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:03:18,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:03:18,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:03:18,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:03:18,806 INFO L87 Difference]: Start difference. First operand 7392 states and 11241 transitions. Second operand 7 states. [2020-10-13 07:03:18,944 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:03:36,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:03:36,634 INFO L93 Difference]: Finished difference Result 20816 states and 32960 transitions. [2020-10-13 07:03:36,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 07:03:36,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1081 [2020-10-13 07:03:36,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:03:36,712 INFO L225 Difference]: With dead ends: 20816 [2020-10-13 07:03:36,712 INFO L226 Difference]: Without dead ends: 14184 [2020-10-13 07:03:36,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 07:03:36,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14184 states. [2020-10-13 07:03:37,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14184 to 14100. [2020-10-13 07:03:37,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14100 states. [2020-10-13 07:03:37,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14100 states to 14100 states and 22161 transitions. [2020-10-13 07:03:37,116 INFO L78 Accepts]: Start accepts. Automaton has 14100 states and 22161 transitions. Word has length 1081 [2020-10-13 07:03:37,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:03:37,117 INFO L479 AbstractCegarLoop]: Abstraction has 14100 states and 22161 transitions. [2020-10-13 07:03:37,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:03:37,117 INFO L276 IsEmpty]: Start isEmpty. Operand 14100 states and 22161 transitions. [2020-10-13 07:03:37,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1089 [2020-10-13 07:03:37,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:03:37,167 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:03:37,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 07:03:37,167 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:03:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:03:37,168 INFO L82 PathProgramCache]: Analyzing trace with hash 2059683025, now seen corresponding path program 1 times [2020-10-13 07:03:37,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:03:37,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391576558] [2020-10-13 07:03:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:03:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:03:37,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:37,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:42,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:03:42,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1108 [2020-10-13 07:03:42,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:03:42,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5251 [2020-10-13 07:03:42,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:03:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:03:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 07:03:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 07:03:42,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:03:42,911 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:03:42,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:03:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:03:42,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:42,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:03:42,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:03:42,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:03:42,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 07:03:42,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:03:42,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:03:42,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:03:42,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:03:42,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:03:43,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:03:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:03:43,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:43,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:03:43,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:03:43,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:03:43,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 07:03:43,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:03:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:03:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:03:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 07:03:43,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:03:43,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:03:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:03:43,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:43,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:03:43,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 07:03:43,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:03:43,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 07:03:43,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:03:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:03:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:03:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 07:03:43,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:03:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 07:03:43,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391576558] [2020-10-13 07:03:43,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:03:43,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 07:03:43,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609464428] [2020-10-13 07:03:43,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 07:03:43,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:03:43,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 07:03:43,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 07:03:43,790 INFO L87 Difference]: Start difference. First operand 14100 states and 22161 transitions. Second operand 8 states. [2020-10-13 07:03:43,934 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:03:45,123 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:04:00,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:04:00,767 INFO L93 Difference]: Finished difference Result 41091 states and 69333 transitions. [2020-10-13 07:04:00,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 07:04:00,768 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1088 [2020-10-13 07:04:00,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:04:00,897 INFO L225 Difference]: With dead ends: 41091 [2020-10-13 07:04:00,897 INFO L226 Difference]: Without dead ends: 27751 [2020-10-13 07:04:00,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-13 07:04:00,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27751 states. [2020-10-13 07:04:01,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27751 to 27349. [2020-10-13 07:04:01,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27349 states. [2020-10-13 07:04:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27349 states to 27349 states and 43315 transitions. [2020-10-13 07:04:01,678 INFO L78 Accepts]: Start accepts. Automaton has 27349 states and 43315 transitions. Word has length 1088 [2020-10-13 07:04:01,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:04:01,678 INFO L479 AbstractCegarLoop]: Abstraction has 27349 states and 43315 transitions. [2020-10-13 07:04:01,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 07:04:01,679 INFO L276 IsEmpty]: Start isEmpty. Operand 27349 states and 43315 transitions. [2020-10-13 07:04:01,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1099 [2020-10-13 07:04:01,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:04:01,775 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:04:01,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 07:04:01,776 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:04:01,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:04:01,777 INFO L82 PathProgramCache]: Analyzing trace with hash -957886715, now seen corresponding path program 1 times [2020-10-13 07:04:01,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:04:01,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600451831] [2020-10-13 07:04:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:04:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:04:02,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:04,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:04,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:07,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:04:07,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1118 [2020-10-13 07:04:07,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:04:07,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5138 [2020-10-13 07:04:07,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:04:07,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 07:04:07,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 07:04:07,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 958 [2020-10-13 07:04:07,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:04:08,047 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:04:08,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:04:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:04:08,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:08,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:04:08,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:04:08,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:04:08,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 07:04:08,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:04:08,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:04:08,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:04:08,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:04:08,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:04:08,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:04:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:04:08,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:08,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:04:08,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:04:08,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:04:08,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 07:04:08,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:04:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:04:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:04:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:04:08,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:04:08,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:04:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:04:08,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:08,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:04:08,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 07:04:08,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:04:08,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 07:04:08,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:04:08,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:04:08,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:04:08,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 07:04:08,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:04:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-13 07:04:09,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600451831] [2020-10-13 07:04:09,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:04:09,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 07:04:09,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251759424] [2020-10-13 07:04:09,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 07:04:09,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:04:09,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 07:04:09,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 07:04:09,147 INFO L87 Difference]: Start difference. First operand 27349 states and 43315 transitions. Second operand 5 states. [2020-10-13 07:04:09,874 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:04:27,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:04:27,768 INFO L93 Difference]: Finished difference Result 79727 states and 134056 transitions. [2020-10-13 07:04:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 07:04:27,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1098 [2020-10-13 07:04:27,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:04:27,986 INFO L225 Difference]: With dead ends: 79727 [2020-10-13 07:04:27,987 INFO L226 Difference]: Without dead ends: 53138 [2020-10-13 07:04:28,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 07:04:28,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53138 states. [2020-10-13 07:04:29,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53138 to 53051. [2020-10-13 07:04:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53051 states. [2020-10-13 07:04:29,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53051 states to 53051 states and 84572 transitions. [2020-10-13 07:04:29,270 INFO L78 Accepts]: Start accepts. Automaton has 53051 states and 84572 transitions. Word has length 1098 [2020-10-13 07:04:29,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:04:29,271 INFO L479 AbstractCegarLoop]: Abstraction has 53051 states and 84572 transitions. [2020-10-13 07:04:29,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 07:04:29,271 INFO L276 IsEmpty]: Start isEmpty. Operand 53051 states and 84572 transitions. [2020-10-13 07:04:29,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2020-10-13 07:04:29,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:04:29,357 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:04:29,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 07:04:29,357 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:04:29,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:04:29,358 INFO L82 PathProgramCache]: Analyzing trace with hash -30289100, now seen corresponding path program 1 times [2020-10-13 07:04:29,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:04:29,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84314614] [2020-10-13 07:04:29,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:04:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:04:29,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:31,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:32,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:34,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:04:34,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1122 [2020-10-13 07:04:34,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:04:34,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5146 [2020-10-13 07:04:34,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:04:34,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:04:34,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 07:04:34,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 07:04:34,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:04:34,903 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:04:34,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:04:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:04:34,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:34,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:04:34,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:04:34,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:04:34,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 07:04:34,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:04:34,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:04:34,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:04:34,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:04:34,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:04:34,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:04:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:04:35,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:35,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:04:35,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:04:35,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:04:35,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 07:04:35,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:04:35,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:04:35,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:04:35,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 07:04:35,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:04:35,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:04:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:04:35,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:35,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:04:35,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 07:04:35,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:04:35,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 07:04:35,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:04:35,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:04:35,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:04:35,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 07:04:35,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:04:35,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-13 07:04:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:04:35,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:35,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:04:35,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 07:04:35,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:04:35,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 07:04:35,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:04:35,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:04:35,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 07:04:35,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:04:35,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:04:35,867 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 153 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 07:04:35,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84314614] [2020-10-13 07:04:35,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:04:35,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 07:04:35,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687952938] [2020-10-13 07:04:35,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:04:35,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:04:35,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:04:35,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:04:35,870 INFO L87 Difference]: Start difference. First operand 53051 states and 84572 transitions. Second operand 7 states. [2020-10-13 07:04:36,027 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:04:37,375 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 132