/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/Problem13_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:30:34,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:30:34,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:30:34,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:30:34,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:30:34,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:30:34,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:30:34,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:30:34,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:30:34,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:30:34,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:30:34,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:30:34,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:30:34,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:30:34,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:30:34,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:30:34,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:30:34,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:30:34,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:30:34,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:30:34,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:30:34,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:30:34,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:30:34,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:30:34,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:30:34,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:30:34,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:30:34,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:30:34,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:30:34,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:30:34,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:30:34,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:30:34,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:30:34,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:30:34,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:30:34,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:30:34,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:30:34,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:30:34,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:30:34,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:30:34,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:30:34,434 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 08:30:34,470 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:30:34,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:30:34,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:30:34,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:30:34,473 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:30:34,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:30:34,473 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:30:34,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:30:34,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:30:34,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:30:34,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:30:34,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:30:34,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:30:34,475 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:30:34,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:30:34,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:30:34,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:30:34,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:30:34,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:30:34,477 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:30:34,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:30:34,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:30:34,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:30:34,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:30:34,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:30:34,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:30:34,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:30:34,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:30:34,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:30:34,479 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 08:30:34,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:30:34,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:30:34,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:30:34,828 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:30:34,829 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:30:34,829 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09.c [2020-10-13 08:30:34,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58aa1727f/fd3ebb1c312f4edeaec6e5e957868e98/FLAGefbf7d558 [2020-10-13 08:30:35,682 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:30:35,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label09.c [2020-10-13 08:30:35,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58aa1727f/fd3ebb1c312f4edeaec6e5e957868e98/FLAGefbf7d558 [2020-10-13 08:30:36,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58aa1727f/fd3ebb1c312f4edeaec6e5e957868e98 [2020-10-13 08:30:36,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:30:36,210 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:30:36,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:30:36,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:30:36,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:30:36,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:30:36" (1/1) ... [2020-10-13 08:30:36,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be095dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:36, skipping insertion in model container [2020-10-13 08:30:36,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:30:36" (1/1) ... [2020-10-13 08:30:36,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:30:36,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:30:38,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:30:38,166 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:30:38,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:30:38,861 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:30:38,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:38 WrapperNode [2020-10-13 08:30:38,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:30:38,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:30:38,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:30:38,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:30:38,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:38" (1/1) ... [2020-10-13 08:30:38,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:38" (1/1) ... [2020-10-13 08:30:38,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:38" (1/1) ... [2020-10-13 08:30:38,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:38" (1/1) ... [2020-10-13 08:30:39,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:38" (1/1) ... [2020-10-13 08:30:39,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:38" (1/1) ... [2020-10-13 08:30:39,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:38" (1/1) ... [2020-10-13 08:30:39,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:30:39,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:30:39,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:30:39,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:30:39,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:38" (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 08:30:39,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:30:39,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:30:39,227 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:30:39,227 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:30:39,227 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:30:39,228 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:30:39,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:30:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:30:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:30:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:30:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:30:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:30:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:30:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:30:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:30:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:30:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:30:50,030 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:30:50,030 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:30:50,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:30:50 BoogieIcfgContainer [2020-10-13 08:30:50,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:30:50,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:30:50,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:30:50,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:30:50,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:30:36" (1/3) ... [2020-10-13 08:30:50,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1c7e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:30:50, skipping insertion in model container [2020-10-13 08:30:50,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:30:38" (2/3) ... [2020-10-13 08:30:50,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1c7e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:30:50, skipping insertion in model container [2020-10-13 08:30:50,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:30:50" (3/3) ... [2020-10-13 08:30:50,054 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label09.c [2020-10-13 08:30:50,065 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:30:50,074 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:30:50,089 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:30:50,116 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:30:50,117 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:30:50,117 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:30:50,117 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:30:50,117 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:30:50,117 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:30:50,117 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:30:50,118 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:30:50,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:30:50,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 08:30:50,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:30:50,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:30:50,165 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:30:50,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:30:50,171 INFO L82 PathProgramCache]: Analyzing trace with hash 469148887, now seen corresponding path program 1 times [2020-10-13 08:30:50,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:30:50,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402188436] [2020-10-13 08:30:50,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:30:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:50,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:50,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:50,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:30:50,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:50,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-13 08:30:50,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:30:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:30:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:30:50,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:30:50,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:30:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:50,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:50,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:50,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:30:50,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:50,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:30:50,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:50,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:30:50,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:50,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:30:50,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:51,005 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 08:30:51,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402188436] [2020-10-13 08:30:51,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:30:51,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:30:51,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550924391] [2020-10-13 08:30:51,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:30:51,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:30:51,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:30:51,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:30:51,040 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:31:05,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:31:05,403 INFO L93 Difference]: Finished difference Result 3204 states and 5913 transitions. [2020-10-13 08:31:05,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:31:05,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-13 08:31:05,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:31:05,456 INFO L225 Difference]: With dead ends: 3204 [2020-10-13 08:31:05,457 INFO L226 Difference]: Without dead ends: 2006 [2020-10-13 08:31:05,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:31:05,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2020-10-13 08:31:05,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1920. [2020-10-13 08:31:05,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-10-13 08:31:05,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 3311 transitions. [2020-10-13 08:31:05,634 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 3311 transitions. Word has length 66 [2020-10-13 08:31:05,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:31:05,635 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 3311 transitions. [2020-10-13 08:31:05,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:31:05,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 3311 transitions. [2020-10-13 08:31:05,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 08:31:05,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:31:05,648 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:31:05,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:31:05,649 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:31:05,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:31:05,650 INFO L82 PathProgramCache]: Analyzing trace with hash -97971073, now seen corresponding path program 1 times [2020-10-13 08:31:05,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:31:05,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44357345] [2020-10-13 08:31:05,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:31:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:05,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:05,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:06,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:07,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:07,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 08:31:07,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:31:07,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1892 [2020-10-13 08:31:07,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:31:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:31:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 08:31:07,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:31:07,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:31:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:07,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:07,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:07,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:31:07,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:07,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:31:07,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:07,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:07,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:07,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:07,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:31:07,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:31:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:07,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:07,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:07,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:31:07,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:07,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 08:31:07,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:07,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:07,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:07,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:31:07,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:31:07,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44357345] [2020-10-13 08:31:07,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:31:07,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:31:07,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797232742] [2020-10-13 08:31:07,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:31:07,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:31:07,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:31:07,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:31:07,970 INFO L87 Difference]: Start difference. First operand 1920 states and 3311 transitions. Second operand 5 states. [2020-10-13 08:31:20,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:31:20,351 INFO L93 Difference]: Finished difference Result 3866 states and 6660 transitions. [2020-10-13 08:31:20,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:31:20,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-13 08:31:20,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:31:20,370 INFO L225 Difference]: With dead ends: 3866 [2020-10-13 08:31:20,370 INFO L226 Difference]: Without dead ends: 1935 [2020-10-13 08:31:20,376 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 08:31:20,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-10-13 08:31:20,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1920. [2020-10-13 08:31:20,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-10-13 08:31:20,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 3309 transitions. [2020-10-13 08:31:20,428 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 3309 transitions. Word has length 135 [2020-10-13 08:31:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:31:20,431 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 3309 transitions. [2020-10-13 08:31:20,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:31:20,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 3309 transitions. [2020-10-13 08:31:20,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 08:31:20,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:31:20,437 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:31:20,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:31:20,438 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:31:20,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:31:20,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1974515854, now seen corresponding path program 1 times [2020-10-13 08:31:20,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:31:20,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946663058] [2020-10-13 08:31:20,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:31:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:20,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:20,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:21,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:21,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 08:31:21,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:31:21,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 936 [2020-10-13 08:31:21,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:21,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:31:21,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:31:21,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:31:21,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:21,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:31:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:21,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:21,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:21,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:31:21,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:21,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:31:21,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:21,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:21,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:21,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:21,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:21,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:31:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:21,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:21,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:21,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:31:21,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:21,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 08:31:21,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:21,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:21,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:21,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:31:21,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:21,633 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:31:21,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946663058] [2020-10-13 08:31:21,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:31:21,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:31:21,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513133394] [2020-10-13 08:31:21,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:31:21,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:31:21,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:31:21,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:31:21,636 INFO L87 Difference]: Start difference. First operand 1920 states and 3309 transitions. Second operand 6 states. [2020-10-13 08:31:38,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:31:38,429 INFO L93 Difference]: Finished difference Result 7291 states and 12794 transitions. [2020-10-13 08:31:38,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:31:38,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-10-13 08:31:38,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:31:38,460 INFO L225 Difference]: With dead ends: 7291 [2020-10-13 08:31:38,461 INFO L226 Difference]: Without dead ends: 5377 [2020-10-13 08:31:38,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:31:38,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5377 states. [2020-10-13 08:31:38,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5377 to 3605. [2020-10-13 08:31:38,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3605 states. [2020-10-13 08:31:38,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3605 states to 3605 states and 5691 transitions. [2020-10-13 08:31:38,590 INFO L78 Accepts]: Start accepts. Automaton has 3605 states and 5691 transitions. Word has length 136 [2020-10-13 08:31:38,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:31:38,592 INFO L479 AbstractCegarLoop]: Abstraction has 3605 states and 5691 transitions. [2020-10-13 08:31:38,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:31:38,592 INFO L276 IsEmpty]: Start isEmpty. Operand 3605 states and 5691 transitions. [2020-10-13 08:31:38,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 08:31:38,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:31:38,594 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 08:31:38,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:31:38,594 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:31:38,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:31:38,595 INFO L82 PathProgramCache]: Analyzing trace with hash 143070131, now seen corresponding path program 1 times [2020-10-13 08:31:38,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:31:38,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261137876] [2020-10-13 08:31:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:31:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:38,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:39,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:40,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:40,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 08:31:40,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:31:40,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1374 [2020-10-13 08:31:40,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:40,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:31:40,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:31:40,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:31:40,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:40,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:31:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:40,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:40,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:40,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:31:40,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:40,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:31:40,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:40,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:40,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:40,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:31:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:40,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:40,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:40,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:31:40,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:40,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 08:31:40,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:40,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:40,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:40,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:31:40,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:31:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:31:40,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261137876] [2020-10-13 08:31:40,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:31:40,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:31:40,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806134017] [2020-10-13 08:31:40,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:31:40,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:31:40,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:31:40,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:31:40,465 INFO L87 Difference]: Start difference. First operand 3605 states and 5691 transitions. Second operand 6 states. [2020-10-13 08:31:55,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:31:55,325 INFO L93 Difference]: Finished difference Result 7240 states and 11427 transitions. [2020-10-13 08:31:55,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 08:31:55,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2020-10-13 08:31:55,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:31:55,345 INFO L225 Difference]: With dead ends: 7240 [2020-10-13 08:31:55,345 INFO L226 Difference]: Without dead ends: 3609 [2020-10-13 08:31:55,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:31:55,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3609 states. [2020-10-13 08:31:55,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3609 to 3605. [2020-10-13 08:31:55,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3605 states. [2020-10-13 08:31:55,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3605 states to 3605 states and 5687 transitions. [2020-10-13 08:31:55,441 INFO L78 Accepts]: Start accepts. Automaton has 3605 states and 5687 transitions. Word has length 141 [2020-10-13 08:31:55,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:31:55,442 INFO L479 AbstractCegarLoop]: Abstraction has 3605 states and 5687 transitions. [2020-10-13 08:31:55,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:31:55,442 INFO L276 IsEmpty]: Start isEmpty. Operand 3605 states and 5687 transitions. [2020-10-13 08:31:55,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 08:31:55,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:31:55,445 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:31:55,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:31:55,445 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:31:55,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:31:55,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1640634765, now seen corresponding path program 1 times [2020-10-13 08:31:55,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:31:55,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451119569] [2020-10-13 08:31:55,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:31:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:55,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:55,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:56,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:56,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 08:31:56,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:31:56,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 873 [2020-10-13 08:31:56,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:31:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-13 08:31:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:31:56,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:56,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:31:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:56,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:56,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:56,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:31:56,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:56,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:31:56,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:56,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:31:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:56,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:56,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:56,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 08:31:56,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:56,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 08:31:56,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:56,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 08:31:56,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:31:56,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451119569] [2020-10-13 08:31:56,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:31:56,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:31:56,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127220594] [2020-10-13 08:31:56,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:31:56,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:31:56,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:31:56,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:31:56,703 INFO L87 Difference]: Start difference. First operand 3605 states and 5687 transitions. Second operand 6 states. [2020-10-13 08:32:17,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:32:17,931 INFO L93 Difference]: Finished difference Result 13767 states and 22383 transitions. [2020-10-13 08:32:17,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:32:17,934 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2020-10-13 08:32:17,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:32:17,976 INFO L225 Difference]: With dead ends: 13767 [2020-10-13 08:32:17,976 INFO L226 Difference]: Without dead ends: 10168 [2020-10-13 08:32:17,989 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 08:32:17,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10168 states. [2020-10-13 08:32:18,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10168 to 10141. [2020-10-13 08:32:18,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10141 states. [2020-10-13 08:32:18,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10141 states to 10141 states and 14785 transitions. [2020-10-13 08:32:18,246 INFO L78 Accepts]: Start accepts. Automaton has 10141 states and 14785 transitions. Word has length 173 [2020-10-13 08:32:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:32:18,247 INFO L479 AbstractCegarLoop]: Abstraction has 10141 states and 14785 transitions. [2020-10-13 08:32:18,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:32:18,247 INFO L276 IsEmpty]: Start isEmpty. Operand 10141 states and 14785 transitions. [2020-10-13 08:32:18,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-13 08:32:18,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:32:18,255 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:32:18,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:32:18,257 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:32:18,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:32:18,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1894363170, now seen corresponding path program 1 times [2020-10-13 08:32:18,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:32:18,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367826177] [2020-10-13 08:32:18,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:32:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:18,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:18,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:18,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:18,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:18,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:18,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-13 08:32:18,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:32:18,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-13 08:32:18,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-10-13 08:32:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:32:18,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:19,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:32:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:19,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:19,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:19,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:32:19,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:19,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:32:19,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:19,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:19,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:19,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:19,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:19,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:32:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:19,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:19,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:19,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 08:32:19,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:19,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-13 08:32:19,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:19,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-13 08:32:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:32:19,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:32:19,518 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:32:19,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367826177] [2020-10-13 08:32:19,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:32:19,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:32:19,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220783285] [2020-10-13 08:32:19,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:32:19,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:32:19,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:32:19,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:32:19,523 INFO L87 Difference]: Start difference. First operand 10141 states and 14785 transitions. Second operand 5 states. [2020-10-13 08:32:33,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:32:33,191 INFO L93 Difference]: Finished difference Result 20271 states and 29648 transitions. [2020-10-13 08:32:33,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:32:33,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-13 08:32:33,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:32:33,235 INFO L225 Difference]: With dead ends: 20271 [2020-10-13 08:32:33,236 INFO L226 Difference]: Without dead ends: 10136 [2020-10-13 08:32:33,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:32:33,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10136 states. [2020-10-13 08:32:33,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10136 to 10132. [2020-10-13 08:32:33,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10132 states. [2020-10-13 08:32:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10132 states to 10132 states and 14765 transitions. [2020-10-13 08:32:33,512 INFO L78 Accepts]: Start accepts. Automaton has 10132 states and 14765 transitions. Word has length 202 [2020-10-13 08:32:33,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:32:33,512 INFO L479 AbstractCegarLoop]: Abstraction has 10132 states and 14765 transitions. [2020-10-13 08:32:33,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:32:33,513 INFO L276 IsEmpty]: Start isEmpty. Operand 10132 states and 14765 transitions. [2020-10-13 08:32:33,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-13 08:32:33,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:32:33,522 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:32:33,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:32:33,523 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:32:33,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:32:33,523 INFO L82 PathProgramCache]: Analyzing trace with hash 2016739795, now seen corresponding path program 1 times [2020-10-13 08:32:33,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:32:33,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182297091] [2020-10-13 08:32:33,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:32:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:33,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:33,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:33,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:33,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:35,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:37,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:37,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-13 08:32:37,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:32:37,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3639 [2020-10-13 08:32:37,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:37,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:37,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 08:32:37,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:32:37,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:37,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:32:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:37,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:37,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:37,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:32:37,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:37,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:32:37,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:37,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:37,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:37,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:37,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:37,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:32:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:37,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:37,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:37,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 08:32:37,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:32:37,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:37,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:37,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 08:32:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:37,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:37,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:37,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:32:37,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:37,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 08:32:37,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:37,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:37,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 08:32:37,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:32:37,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:37,702 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 08:32:37,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182297091] [2020-10-13 08:32:37,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:32:37,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:32:37,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308963315] [2020-10-13 08:32:37,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:32:37,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:32:37,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:32:37,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:32:37,710 INFO L87 Difference]: Start difference. First operand 10132 states and 14765 transitions. Second operand 5 states. [2020-10-13 08:33:03,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:03,717 INFO L93 Difference]: Finished difference Result 25231 states and 37745 transitions. [2020-10-13 08:33:03,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:33:03,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-13 08:33:03,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:03,785 INFO L225 Difference]: With dead ends: 25231 [2020-10-13 08:33:03,786 INFO L226 Difference]: Without dead ends: 15105 [2020-10-13 08:33:03,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:33:03,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15105 states. [2020-10-13 08:33:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15105 to 15051. [2020-10-13 08:33:04,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15051 states. [2020-10-13 08:33:04,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15051 states to 15051 states and 21956 transitions. [2020-10-13 08:33:04,151 INFO L78 Accepts]: Start accepts. Automaton has 15051 states and 21956 transitions. Word has length 219 [2020-10-13 08:33:04,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:04,152 INFO L479 AbstractCegarLoop]: Abstraction has 15051 states and 21956 transitions. [2020-10-13 08:33:04,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:33:04,152 INFO L276 IsEmpty]: Start isEmpty. Operand 15051 states and 21956 transitions. [2020-10-13 08:33:04,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-13 08:33:04,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:04,162 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:33:04,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:33:04,162 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:04,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:04,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1399199416, now seen corresponding path program 1 times [2020-10-13 08:33:04,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:04,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101978701] [2020-10-13 08:33:04,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:04,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:05,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:05,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-13 08:33:05,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:33:05,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1146 [2020-10-13 08:33:05,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:33:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:33:05,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:33:05,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:05,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:05,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:05,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:05,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:05,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:05,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:33:05,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:05,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:05,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:05,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:33:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:05,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:05,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:05,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 08:33:05,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:05,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-13 08:33:05,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:05,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:05,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:05,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-13 08:33:05,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:05,930 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:33:05,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101978701] [2020-10-13 08:33:05,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:33:05,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:33:05,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876532847] [2020-10-13 08:33:05,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:33:05,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:05,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:33:05,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:33:05,933 INFO L87 Difference]: Start difference. First operand 15051 states and 21956 transitions. Second operand 5 states. [2020-10-13 08:33:30,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:30,255 INFO L93 Difference]: Finished difference Result 44727 states and 67874 transitions. [2020-10-13 08:33:30,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:33:30,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-10-13 08:33:30,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:30,403 INFO L225 Difference]: With dead ends: 44727 [2020-10-13 08:33:30,403 INFO L226 Difference]: Without dead ends: 29682 [2020-10-13 08:33:30,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:33:30,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29682 states. [2020-10-13 08:33:31,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29682 to 29677. [2020-10-13 08:33:31,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29677 states. [2020-10-13 08:33:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29677 states to 29677 states and 42781 transitions. [2020-10-13 08:33:31,205 INFO L78 Accepts]: Start accepts. Automaton has 29677 states and 42781 transitions. Word has length 233 [2020-10-13 08:33:31,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:31,206 INFO L479 AbstractCegarLoop]: Abstraction has 29677 states and 42781 transitions. [2020-10-13 08:33:31,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:33:31,206 INFO L276 IsEmpty]: Start isEmpty. Operand 29677 states and 42781 transitions. [2020-10-13 08:33:31,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-13 08:33:31,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:31,220 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:33:31,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:33:31,221 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:31,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:31,221 INFO L82 PathProgramCache]: Analyzing trace with hash 505996448, now seen corresponding path program 1 times [2020-10-13 08:33:31,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:31,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759118335] [2020-10-13 08:33:31,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:31,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:31,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:32,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:32,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 08:33:32,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:33:32,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1542 [2020-10-13 08:33:32,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:32,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:33:32,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-13 08:33:32,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:33:32,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:32,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:32,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:32,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:32,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:32,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:32,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:33:32,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:32,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:33,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:33:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:33,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:33,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:33,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:33:33,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:33,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-13 08:33:33,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-13 08:33:33,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:33:33,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759118335] [2020-10-13 08:33:33,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:33:33,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:33:33,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785877106] [2020-10-13 08:33:33,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:33:33,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:33,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:33:33,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:33:33,622 INFO L87 Difference]: Start difference. First operand 29677 states and 42781 transitions. Second operand 5 states. [2020-10-13 08:33:59,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:59,236 INFO L93 Difference]: Finished difference Result 87783 states and 132517 transitions. [2020-10-13 08:33:59,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:33:59,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2020-10-13 08:33:59,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:59,544 INFO L225 Difference]: With dead ends: 87783 [2020-10-13 08:33:59,544 INFO L226 Difference]: Without dead ends: 58112 [2020-10-13 08:33:59,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:33:59,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58112 states. [2020-10-13 08:34:01,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58112 to 58102. [2020-10-13 08:34:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58102 states. [2020-10-13 08:34:01,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58102 states to 58102 states and 84737 transitions. [2020-10-13 08:34:01,223 INFO L78 Accepts]: Start accepts. Automaton has 58102 states and 84737 transitions. Word has length 245 [2020-10-13 08:34:01,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:34:01,225 INFO L479 AbstractCegarLoop]: Abstraction has 58102 states and 84737 transitions. [2020-10-13 08:34:01,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:34:01,225 INFO L276 IsEmpty]: Start isEmpty. Operand 58102 states and 84737 transitions. [2020-10-13 08:34:01,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-13 08:34:01,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:34:01,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:34:01,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:34:01,273 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:34:01,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:34:01,273 INFO L82 PathProgramCache]: Analyzing trace with hash 163884018, now seen corresponding path program 1 times [2020-10-13 08:34:01,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:34:01,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908581594] [2020-10-13 08:34:01,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:34:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:01,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:01,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:01,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:03,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:05,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:05,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:06,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:06,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-13 08:34:06,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:34:06,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 08:34:06,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:06,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:34:06,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-13 08:34:06,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:34:06,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:06,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:34:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:06,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:06,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:06,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:34:06,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:06,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:34:06,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:06,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:34:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:06,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:06,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:06,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 08:34:06,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:06,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 08:34:06,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:06,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:06,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:06,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:06,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 08:34:06,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 08:34:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:06,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:06,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:06,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-13 08:34:06,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:06,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-13 08:34:06,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:06,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:34:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-13 08:34:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:34:06,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 08:34:07,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908581594] [2020-10-13 08:34:07,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:34:07,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:34:07,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212269679] [2020-10-13 08:34:07,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:34:07,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:34:07,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:34:07,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:34:07,102 INFO L87 Difference]: Start difference. First operand 58102 states and 84737 transitions. Second operand 5 states.