/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:18:19,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:18:19,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:18:19,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:18:19,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:18:19,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:18:19,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:18:19,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:18:19,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:18:19,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:18:19,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:18:19,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:18:19,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:18:19,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:18:19,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:18:19,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:18:19,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:18:19,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:18:19,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:18:19,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:18:19,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:18:19,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:18:19,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:18:19,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:18:19,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:18:19,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:18:19,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:18:19,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:18:19,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:18:19,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:18:19,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:18:19,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:18:19,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:18:19,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:18:19,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:18:19,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:18:19,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:18:19,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:18:19,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:18:19,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:18:19,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:18:19,162 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:18:19,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:18:19,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:18:19,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:18:19,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:18:19,210 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:18:19,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:18:19,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:18:19,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:18:19,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:18:19,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:18:19,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:18:19,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:18:19,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:18:19,213 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:18:19,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:18:19,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:18:19,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:18:19,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:18:19,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:18:19,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:18:19,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:18:19,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:18:19,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:18:19,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:18:19,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:18:19,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:18:19,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:18:19,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:18:19,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:18:19,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:18:19,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:18:19,546 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:18:19,549 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:18:19,551 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:18:19,551 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:18:19,552 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2020-10-13 08:18:19,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c2d5c3b8/3768c537d7a8443982e14f85175c1567/FLAGce4de3388 [2020-10-13 08:18:20,349 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:18:20,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2020-10-13 08:18:20,387 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c2d5c3b8/3768c537d7a8443982e14f85175c1567/FLAGce4de3388 [2020-10-13 08:18:20,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c2d5c3b8/3768c537d7a8443982e14f85175c1567 [2020-10-13 08:18:20,443 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:18:20,446 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:18:20,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:18:20,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:18:20,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:18:20,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:18:20" (1/1) ... [2020-10-13 08:18:20,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@533c9030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:20, skipping insertion in model container [2020-10-13 08:18:20,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:18:20" (1/1) ... [2020-10-13 08:18:20,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:18:20,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:18:22,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:18:22,067 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:18:22,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:18:22,818 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:18:22,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:22 WrapperNode [2020-10-13 08:18:22,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:18:22,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:18:22,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:18:22,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:18:22,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:22" (1/1) ... [2020-10-13 08:18:22,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:22" (1/1) ... [2020-10-13 08:18:22,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:22" (1/1) ... [2020-10-13 08:18:22,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:22" (1/1) ... [2020-10-13 08:18:23,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:22" (1/1) ... [2020-10-13 08:18:23,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:22" (1/1) ... [2020-10-13 08:18:23,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:22" (1/1) ... [2020-10-13 08:18:23,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:18:23,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:18:23,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:18:23,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:18:23,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:18:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:18:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:18:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:18:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:18:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:18:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:18:23,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:18:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:18:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:18:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:18:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:18:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:18:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:18:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:18:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:18:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:18:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:18:28,419 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:18:28,420 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:18:28,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:18:28 BoogieIcfgContainer [2020-10-13 08:18:28,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:18:28,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:18:28,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:18:28,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:18:28,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:18:20" (1/3) ... [2020-10-13 08:18:28,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@408e32c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:18:28, skipping insertion in model container [2020-10-13 08:18:28,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:18:22" (2/3) ... [2020-10-13 08:18:28,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@408e32c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:18:28, skipping insertion in model container [2020-10-13 08:18:28,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:18:28" (3/3) ... [2020-10-13 08:18:28,443 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label18.c [2020-10-13 08:18:28,453 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:18:28,463 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:18:28,475 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:18:28,504 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:18:28,504 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:18:28,504 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:18:28,504 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:18:28,505 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:18:28,505 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:18:28,505 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:18:28,505 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:18:28,541 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:18:28,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 08:18:28,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:28,552 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] [2020-10-13 08:18:28,552 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:28,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:28,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1489686398, now seen corresponding path program 1 times [2020-10-13 08:18:28,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:28,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282344828] [2020-10-13 08:18:28,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:28,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:29,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:29,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 08:18:29,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:29,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-10-13 08:18:29,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:18:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:18:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 08:18:29,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:18:29,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:29,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:29,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:29,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:29,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:29,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:18:29,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:18:29,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:29,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:18:29,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282344828] [2020-10-13 08:18:29,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:18:29,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 08:18:29,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261605847] [2020-10-13 08:18:29,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:18:29,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:29,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:18:29,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:18:29,477 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-13 08:18:38,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:38,992 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-13 08:18:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:18:38,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-13 08:18:38,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:39,056 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:18:39,057 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:18:39,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:18:39,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:18:39,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:18:39,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:18:39,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-13 08:18:39,279 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 59 [2020-10-13 08:18:39,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:39,280 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-13 08:18:39,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:18:39,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-13 08:18:39,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 08:18:39,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:39,287 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:18:39,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:18:39,287 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:39,288 INFO L82 PathProgramCache]: Analyzing trace with hash -612385541, now seen corresponding path program 1 times [2020-10-13 08:18:39,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:39,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888039336] [2020-10-13 08:18:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:39,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:39,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:39,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:40,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:40,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 08:18:40,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:18:40,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1303 [2020-10-13 08:18:40,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:40,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:40,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:18:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:18:40,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:40,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:40,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:40,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:40,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:40,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:40,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:18:40,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:40,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:40,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:40,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:40,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:40,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:40,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:40,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:40,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:18:40,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:40,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 08:18:40,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:40,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:18:40,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:40,921 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:18:40,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888039336] [2020-10-13 08:18:40,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:40,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:18:40,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673582679] [2020-10-13 08:18:40,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:18:40,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:40,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:18:40,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:18:40,926 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-13 08:18:47,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:47,895 INFO L93 Difference]: Finished difference Result 3162 states and 5113 transitions. [2020-10-13 08:18:47,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:18:47,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-13 08:18:47,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:47,911 INFO L225 Difference]: With dead ends: 3162 [2020-10-13 08:18:47,911 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:18:47,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:18:47,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:18:47,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:18:47,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:18:47,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2333 transitions. [2020-10-13 08:18:47,959 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2333 transitions. Word has length 134 [2020-10-13 08:18:47,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:47,960 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2333 transitions. [2020-10-13 08:18:47,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:18:47,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2333 transitions. [2020-10-13 08:18:47,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 08:18:47,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:47,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:18:47,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:18:47,964 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:47,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:47,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1955003690, now seen corresponding path program 1 times [2020-10-13 08:18:47,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:47,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127931355] [2020-10-13 08:18:47,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:48,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:48,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:48,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:48,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 08:18:48,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:18:48,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 862 [2020-10-13 08:18:48,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:48,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:18:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 08:18:48,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:48,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:48,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:48,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:48,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:48,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:48,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:18:48,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:48,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:48,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:48,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:18:48,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:49,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:49,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:49,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:18:49,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:49,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 08:18:49,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:18:49,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:18:49,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127931355] [2020-10-13 08:18:49,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:49,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:18:49,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982342136] [2020-10-13 08:18:49,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:18:49,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:49,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:18:49,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:18:49,200 INFO L87 Difference]: Start difference. First operand 1553 states and 2333 transitions. Second operand 5 states. [2020-10-13 08:19:02,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:02,753 INFO L93 Difference]: Finished difference Result 4672 states and 7091 transitions. [2020-10-13 08:19:02,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:19:02,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-13 08:19:02,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:02,774 INFO L225 Difference]: With dead ends: 4672 [2020-10-13 08:19:02,774 INFO L226 Difference]: Without dead ends: 3125 [2020-10-13 08:19:02,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:19:02,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-13 08:19:02,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3109. [2020-10-13 08:19:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-13 08:19:02,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4303 transitions. [2020-10-13 08:19:02,891 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4303 transitions. Word has length 135 [2020-10-13 08:19:02,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:02,892 INFO L479 AbstractCegarLoop]: Abstraction has 3109 states and 4303 transitions. [2020-10-13 08:19:02,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:19:02,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4303 transitions. [2020-10-13 08:19:02,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 08:19:02,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:02,896 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:19:02,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:19:02,896 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:02,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:02,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1550257993, now seen corresponding path program 1 times [2020-10-13 08:19:02,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:02,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945702345] [2020-10-13 08:19:02,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:02,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:03,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:03,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:03,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:03,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 08:19:03,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:19:03,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 835 [2020-10-13 08:19:03,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 08:19:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 08:19:03,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:03,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:03,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:03,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:03,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:03,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:03,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:19:03,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:03,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:03,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:03,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:03,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:03,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:03,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:03,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 08:19:03,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:03,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 08:19:03,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:03,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:03,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:03,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:19:03,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:19:04,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945702345] [2020-10-13 08:19:04,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:04,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:19:04,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159553971] [2020-10-13 08:19:04,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:19:04,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:04,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:19:04,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:19:04,049 INFO L87 Difference]: Start difference. First operand 3109 states and 4303 transitions. Second operand 6 states. [2020-10-13 08:19:17,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:17,406 INFO L93 Difference]: Finished difference Result 7784 states and 11149 transitions. [2020-10-13 08:19:17,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:19:17,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2020-10-13 08:19:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:17,433 INFO L225 Difference]: With dead ends: 7784 [2020-10-13 08:19:17,433 INFO L226 Difference]: Without dead ends: 4681 [2020-10-13 08:19:17,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:19:17,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2020-10-13 08:19:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4673. [2020-10-13 08:19:17,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4673 states. [2020-10-13 08:19:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 6273 transitions. [2020-10-13 08:19:17,598 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 6273 transitions. Word has length 148 [2020-10-13 08:19:17,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:17,600 INFO L479 AbstractCegarLoop]: Abstraction has 4673 states and 6273 transitions. [2020-10-13 08:19:17,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:19:17,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 6273 transitions. [2020-10-13 08:19:17,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 08:19:17,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:17,611 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:19:17,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:19:17,612 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:17,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:17,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1773100147, now seen corresponding path program 1 times [2020-10-13 08:19:17,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:17,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328159451] [2020-10-13 08:19:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:17,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:17,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:18,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:18,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 08:19:18,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:19:18,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 834 [2020-10-13 08:19:18,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:18,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:18,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 08:19:18,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 08:19:18,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:18,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:18,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:18,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:18,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:18,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:19:18,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:18,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:18,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:18,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:18,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:18,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:19:18,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:18,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 08:19:18,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:19:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:19:18,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328159451] [2020-10-13 08:19:18,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:18,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:19:18,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189584948] [2020-10-13 08:19:18,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:19:18,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:18,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:19:18,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:19:18,818 INFO L87 Difference]: Start difference. First operand 4673 states and 6273 transitions. Second operand 5 states. [2020-10-13 08:19:32,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:32,069 INFO L93 Difference]: Finished difference Result 14023 states and 19239 transitions. [2020-10-13 08:19:32,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:19:32,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-13 08:19:32,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:32,123 INFO L225 Difference]: With dead ends: 14023 [2020-10-13 08:19:32,124 INFO L226 Difference]: Without dead ends: 9356 [2020-10-13 08:19:32,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:19:32,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9356 states. [2020-10-13 08:19:32,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9356 to 9339. [2020-10-13 08:19:32,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9339 states. [2020-10-13 08:19:32,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9339 states to 9339 states and 12297 transitions. [2020-10-13 08:19:32,388 INFO L78 Accepts]: Start accepts. Automaton has 9339 states and 12297 transitions. Word has length 162 [2020-10-13 08:19:32,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:32,389 INFO L479 AbstractCegarLoop]: Abstraction has 9339 states and 12297 transitions. [2020-10-13 08:19:32,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:19:32,389 INFO L276 IsEmpty]: Start isEmpty. Operand 9339 states and 12297 transitions. [2020-10-13 08:19:32,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-13 08:19:32,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:32,395 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:19:32,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:19:32,396 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:32,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:32,396 INFO L82 PathProgramCache]: Analyzing trace with hash -178395205, now seen corresponding path program 1 times [2020-10-13 08:19:32,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:32,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25693231] [2020-10-13 08:19:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:32,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:32,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:32,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:33,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:35,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:35,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-13 08:19:35,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:19:35,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3510 [2020-10-13 08:19:35,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:35,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:35,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-13 08:19:35,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 08:19:35,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:36,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:36,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:36,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:36,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:36,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:36,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:19:36,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:36,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:36,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:36,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:36,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:36,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:36,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:19:36,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:36,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 08:19:36,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:36,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:36,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:36,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:36,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:36,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 08:19:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:36,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:36,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:36,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 08:19:36,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:36,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 08:19:36,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:36,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:19:36,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 08:19:36,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25693231] [2020-10-13 08:19:36,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:36,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:19:36,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536362631] [2020-10-13 08:19:36,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:19:36,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:36,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:19:36,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:19:36,282 INFO L87 Difference]: Start difference. First operand 9339 states and 12297 transitions. Second operand 5 states. [2020-10-13 08:19:50,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:50,345 INFO L93 Difference]: Finished difference Result 23339 states and 31614 transitions. [2020-10-13 08:19:50,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:19:50,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 208 [2020-10-13 08:19:50,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:50,404 INFO L225 Difference]: With dead ends: 23339 [2020-10-13 08:19:50,404 INFO L226 Difference]: Without dead ends: 14006 [2020-10-13 08:19:50,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:19:50,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14006 states. [2020-10-13 08:19:50,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14006 to 13989. [2020-10-13 08:19:50,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13989 states. [2020-10-13 08:19:50,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13989 states to 13989 states and 17581 transitions. [2020-10-13 08:19:50,761 INFO L78 Accepts]: Start accepts. Automaton has 13989 states and 17581 transitions. Word has length 208 [2020-10-13 08:19:50,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:50,762 INFO L479 AbstractCegarLoop]: Abstraction has 13989 states and 17581 transitions. [2020-10-13 08:19:50,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:19:50,762 INFO L276 IsEmpty]: Start isEmpty. Operand 13989 states and 17581 transitions. [2020-10-13 08:19:50,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-13 08:19:50,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:50,769 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:19:50,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:19:50,770 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:50,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:50,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1411358726, now seen corresponding path program 1 times [2020-10-13 08:19:50,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:50,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793148442] [2020-10-13 08:19:50,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:50,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:50,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:50,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:53,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:53,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:55,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:55,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-13 08:19:55,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:19:55,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4574 [2020-10-13 08:19:55,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-13 08:19:55,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:19:55,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:55,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:55,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:55,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:55,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:55,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:55,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:19:55,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:55,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:55,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:55,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:55,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:55,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:55,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:55,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:55,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:19:55,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:55,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 08:19:55,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:55,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:55,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 08:19:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:55,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:55,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:55,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:19:55,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:55,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 08:19:55,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:55,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:55,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:19:55,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:55,815 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-13 08:19:55,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793148442] [2020-10-13 08:19:55,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:55,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:19:55,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226395329] [2020-10-13 08:19:55,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:19:55,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:55,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:19:55,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:19:55,819 INFO L87 Difference]: Start difference. First operand 13989 states and 17581 transitions. Second operand 5 states. [2020-10-13 08:20:04,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:20:04,342 INFO L93 Difference]: Finished difference Result 28001 states and 35273 transitions. [2020-10-13 08:20:04,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:20:04,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2020-10-13 08:20:04,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:20:04,400 INFO L225 Difference]: With dead ends: 28001 [2020-10-13 08:20:04,401 INFO L226 Difference]: Without dead ends: 14006 [2020-10-13 08:20:04,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:20:04,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14006 states. [2020-10-13 08:20:04,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14006 to 13989. [2020-10-13 08:20:04,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13989 states. [2020-10-13 08:20:04,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13989 states to 13989 states and 17577 transitions. [2020-10-13 08:20:04,724 INFO L78 Accepts]: Start accepts. Automaton has 13989 states and 17577 transitions. Word has length 209 [2020-10-13 08:20:04,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:20:04,725 INFO L479 AbstractCegarLoop]: Abstraction has 13989 states and 17577 transitions. [2020-10-13 08:20:04,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:20:04,725 INFO L276 IsEmpty]: Start isEmpty. Operand 13989 states and 17577 transitions. [2020-10-13 08:20:04,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-13 08:20:04,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:20:04,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:20:04,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:20:04,734 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:20:04,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:20:04,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1551721298, now seen corresponding path program 1 times [2020-10-13 08:20:04,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:20:04,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807145029] [2020-10-13 08:20:04,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:20:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:04,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:05,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:05,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:05,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-13 08:20:05,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:20:05,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1176 [2020-10-13 08:20:05,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:20:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 08:20:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 08:20:05,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:06,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:20:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:06,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:06,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:06,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:20:06,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:06,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:20:06,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:06,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:06,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:06,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:20:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:06,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:06,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:06,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 08:20:06,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:06,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-13 08:20:06,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:20:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 08:20:06,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:20:06,456 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:20:06,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807145029] [2020-10-13 08:20:06,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:20:06,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:20:06,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863638968] [2020-10-13 08:20:06,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:20:06,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:20:06,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:20:06,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:20:06,461 INFO L87 Difference]: Start difference. First operand 13989 states and 17577 transitions. Second operand 6 states. [2020-10-13 08:20:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:20:29,075 INFO L93 Difference]: Finished difference Result 34992 states and 45194 transitions. [2020-10-13 08:20:29,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:20:29,077 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2020-10-13 08:20:29,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:20:29,160 INFO L225 Difference]: With dead ends: 34992 [2020-10-13 08:20:29,160 INFO L226 Difference]: Without dead ends: 21009 [2020-10-13 08:20:29,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:20:29,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21009 states. [2020-10-13 08:20:29,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21009 to 20216. [2020-10-13 08:20:29,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20216 states. [2020-10-13 08:20:29,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20216 states to 20216 states and 25817 transitions. [2020-10-13 08:20:29,654 INFO L78 Accepts]: Start accepts. Automaton has 20216 states and 25817 transitions. Word has length 213 [2020-10-13 08:20:29,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:20:29,654 INFO L479 AbstractCegarLoop]: Abstraction has 20216 states and 25817 transitions. [2020-10-13 08:20:29,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:20:29,655 INFO L276 IsEmpty]: Start isEmpty. Operand 20216 states and 25817 transitions. [2020-10-13 08:20:29,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-13 08:20:29,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:20:29,667 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:20:29,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:20:29,668 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:20:29,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:20:29,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1527655866, now seen corresponding path program 1 times [2020-10-13 08:20:29,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:20:29,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910503422] [2020-10-13 08:20:29,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:20:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:29,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:29,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:30,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:30,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:33,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:33,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 08:20:33,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:20:33,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3905 [2020-10-13 08:20:33,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:33,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:20:33,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-10-13 08:20:33,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 08:20:33,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:33,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:20:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:33,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:33,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:33,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:20:33,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:33,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:20:33,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:33,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:33,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:20:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:33,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:33,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:33,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:20:33,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:33,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:20:33,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:33,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:33,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:33,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:33,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:20:33,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 08:20:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:33,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:33,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:33,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 08:20:33,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:33,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 08:20:33,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:33,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:20:33,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:33,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 08:20:33,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:34,073 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-13 08:20:34,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910503422] [2020-10-13 08:20:34,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:20:34,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:20:34,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956448148] [2020-10-13 08:20:34,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:20:34,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:20:34,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:20:34,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:20:34,084 INFO L87 Difference]: Start difference. First operand 20216 states and 25817 transitions. Second operand 5 states. [2020-10-13 08:20:51,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:20:51,001 INFO L93 Difference]: Finished difference Result 53630 states and 71511 transitions. [2020-10-13 08:20:51,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:20:51,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-13 08:20:51,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:20:51,134 INFO L225 Difference]: With dead ends: 53630 [2020-10-13 08:20:51,135 INFO L226 Difference]: Without dead ends: 33420 [2020-10-13 08:20:51,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:20:51,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33420 states. [2020-10-13 08:20:51,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33420 to 33400. [2020-10-13 08:20:51,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33400 states. [2020-10-13 08:20:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33400 states to 33400 states and 42927 transitions. [2020-10-13 08:20:51,973 INFO L78 Accepts]: Start accepts. Automaton has 33400 states and 42927 transitions. Word has length 241 [2020-10-13 08:20:51,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:20:51,974 INFO L479 AbstractCegarLoop]: Abstraction has 33400 states and 42927 transitions. [2020-10-13 08:20:51,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:20:51,974 INFO L276 IsEmpty]: Start isEmpty. Operand 33400 states and 42927 transitions. [2020-10-13 08:20:52,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-13 08:20:52,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:20:52,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:20:52,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:20:52,021 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:20:52,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:20:52,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1793107749, now seen corresponding path program 1 times [2020-10-13 08:20:52,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:20:52,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665935505] [2020-10-13 08:20:52,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:20:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:52,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:52,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:54,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:55,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:57,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:57,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 429 [2020-10-13 08:20:57,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:20:57,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 08:20:57,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:57,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:20:57,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 367 [2020-10-13 08:20:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 08:20:57,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:20:57,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:20:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:57,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:57,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:57,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:20:57,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:57,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:20:57,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:57,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:57,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:57,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:57,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:20:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:57,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:57,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:57,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-13 08:20:57,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:57,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-13 08:20:57,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:20:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 352 [2020-10-13 08:20:57,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:57,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:20:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:57,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:57,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:57,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:20:57,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:57,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 08:20:57,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:57,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:20:57,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:20:57,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:20:58,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665935505] [2020-10-13 08:20:58,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:20:58,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:20:58,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666989686] [2020-10-13 08:20:58,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:20:58,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:20:58,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:20:58,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:20:58,004 INFO L87 Difference]: Start difference. First operand 33400 states and 42927 transitions. Second operand 5 states. [2020-10-13 08:21:09,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:21:09,770 INFO L93 Difference]: Finished difference Result 66841 states and 86145 transitions. [2020-10-13 08:21:09,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:21:09,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 417 [2020-10-13 08:21:09,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:21:09,899 INFO L225 Difference]: With dead ends: 66841 [2020-10-13 08:21:09,900 INFO L226 Difference]: Without dead ends: 33420 [2020-10-13 08:21:09,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:21:09,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33420 states. [2020-10-13 08:21:10,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33420 to 33400. [2020-10-13 08:21:10,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33400 states. [2020-10-13 08:21:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33400 states to 33400 states and 42903 transitions. [2020-10-13 08:21:10,657 INFO L78 Accepts]: Start accepts. Automaton has 33400 states and 42903 transitions. Word has length 417 [2020-10-13 08:21:10,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:21:10,658 INFO L479 AbstractCegarLoop]: Abstraction has 33400 states and 42903 transitions. [2020-10-13 08:21:10,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:21:10,658 INFO L276 IsEmpty]: Start isEmpty. Operand 33400 states and 42903 transitions. [2020-10-13 08:21:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2020-10-13 08:21:10,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:21:10,756 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:21:10,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:21:10,756 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:21:10,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:21:10,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1908418653, now seen corresponding path program 1 times [2020-10-13 08:21:10,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:21:10,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252633341] [2020-10-13 08:21:10,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:21:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:10,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:10,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:15,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:15,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 762 [2020-10-13 08:21:15,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:21:15,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 08:21:15,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:21:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:21:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:21:15,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:15,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:21:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:15,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:15,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:15,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:21:15,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:15,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:21:15,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:15,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:15,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:21:15,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:16,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:21:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:16,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:16,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:16,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:21:16,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:16,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:21:16,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:16,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:21:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:21:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:21:16,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:16,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 08:21:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:16,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:16,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:16,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-13 08:21:16,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:16,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-13 08:21:16,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:16,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:16,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 595 [2020-10-13 08:21:16,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:16,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:16,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:21:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:16,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:17,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:17,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 08:21:17,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:17,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-13 08:21:17,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:17,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:17,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:17,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:21:17,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:21:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:17,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:17,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:17,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:21:17,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:17,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:21:17,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:17,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:21:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 104 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:21:17,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252633341] [2020-10-13 08:21:17,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:21:17,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:21:17,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220411802] [2020-10-13 08:21:17,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:21:17,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:21:17,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:21:17,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:21:17,945 INFO L87 Difference]: Start difference. First operand 33400 states and 42903 transitions. Second operand 7 states. [2020-10-13 08:21:41,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:21:41,961 INFO L93 Difference]: Finished difference Result 85757 states and 112074 transitions. [2020-10-13 08:21:41,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:21:41,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 746 [2020-10-13 08:21:41,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:21:42,141 INFO L225 Difference]: With dead ends: 85757 [2020-10-13 08:21:42,141 INFO L226 Difference]: Without dead ends: 52363 [2020-10-13 08:21:42,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:21:42,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52363 states. [2020-10-13 08:21:43,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52363 to 50045. [2020-10-13 08:21:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50045 states. [2020-10-13 08:21:43,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50045 states to 50045 states and 63893 transitions. [2020-10-13 08:21:43,088 INFO L78 Accepts]: Start accepts. Automaton has 50045 states and 63893 transitions. Word has length 746 [2020-10-13 08:21:43,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:21:43,089 INFO L479 AbstractCegarLoop]: Abstraction has 50045 states and 63893 transitions. [2020-10-13 08:21:43,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:21:43,089 INFO L276 IsEmpty]: Start isEmpty. Operand 50045 states and 63893 transitions. [2020-10-13 08:21:43,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2020-10-13 08:21:43,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:21:43,146 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:21:43,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:21:43,147 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:21:43,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:21:43,147 INFO L82 PathProgramCache]: Analyzing trace with hash -794751645, now seen corresponding path program 1 times [2020-10-13 08:21:43,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:21:43,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938238177] [2020-10-13 08:21:43,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:21:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:43,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:44,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:44,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:47,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:47,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 794 [2020-10-13 08:21:47,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:21:47,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4289 [2020-10-13 08:21:47,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:21:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 729 [2020-10-13 08:21:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 08:21:47,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:47,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:21:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:47,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:47,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:21:47,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:47,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:21:47,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:47,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:47,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:47,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:47,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:47,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:21:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:47,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:47,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:47,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:21:47,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:47,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:21:47,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:47,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:47,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:47,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:47,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:47,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:21:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:49,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:49,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:49,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-13 08:21:49,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:49,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1518 [2020-10-13 08:21:49,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:49,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:49,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:49,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 586 [2020-10-13 08:21:49,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:49,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:21:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:49,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:49,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:49,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 08:21:49,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-13 08:21:49,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-13 08:21:49,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:49,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:21:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:49,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:49,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:49,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:21:49,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:49,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 08:21:49,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:49,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:49,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:49,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 08:21:49,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 08:21:50,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938238177] [2020-10-13 08:21:50,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:21:50,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:21:50,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519889856] [2020-10-13 08:21:50,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:21:50,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:21:50,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:21:50,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:21:50,422 INFO L87 Difference]: Start difference. First operand 50045 states and 63893 transitions. Second operand 5 states. [2020-10-13 08:22:03,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:03,612 INFO L93 Difference]: Finished difference Result 83017 states and 106672 transitions. [2020-10-13 08:22:03,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:22:03,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 778 [2020-10-13 08:22:03,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:03,616 INFO L225 Difference]: With dead ends: 83017 [2020-10-13 08:22:03,616 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 08:22:03,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:22:03,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 08:22:03,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 08:22:03,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 08:22:03,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 08:22:03,681 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 778 [2020-10-13 08:22:03,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:03,682 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 08:22:03,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:22:03,682 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 08:22:03,682 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 08:22:03,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:22:03,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.