/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 20:03:09,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 20:03:09,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 20:03:09,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 20:03:09,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 20:03:09,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 20:03:09,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 20:03:09,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 20:03:09,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 20:03:09,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 20:03:09,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 20:03:09,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 20:03:09,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 20:03:09,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 20:03:09,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 20:03:09,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 20:03:09,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 20:03:09,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 20:03:09,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 20:03:09,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 20:03:09,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 20:03:09,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 20:03:09,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 20:03:09,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 20:03:09,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 20:03:09,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 20:03:09,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 20:03:09,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 20:03:09,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 20:03:09,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 20:03:09,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 20:03:09,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 20:03:09,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 20:03:09,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 20:03:09,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 20:03:09,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 20:03:09,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 20:03:09,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 20:03:09,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 20:03:09,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 20:03:09,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 20:03:09,468 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 [2020-10-14 20:03:09,492 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 20:03:09,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 20:03:09,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 20:03:09,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 20:03:09,494 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 20:03:09,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 20:03:09,494 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 20:03:09,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 20:03:09,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 20:03:09,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 20:03:09,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 20:03:09,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 20:03:09,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 20:03:09,496 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 20:03:09,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 20:03:09,496 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 20:03:09,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 20:03:09,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 20:03:09,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 20:03:09,497 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 20:03:09,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 20:03:09,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 20:03:09,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 20:03:09,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 20:03:09,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 20:03:09,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 20:03:09,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 20:03:09,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 20:03:09,499 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 20:03:09,499 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 20:03:09,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 20:03:09,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 20:03:09,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 20:03:09,827 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 20:03:09,828 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 20:03:09,828 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label48.c [2020-10-14 20:03:09,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75519441f/c9772142988e43c58db80f088fb5ef16/FLAG783db4e2c [2020-10-14 20:03:10,848 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 20:03:10,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label48.c [2020-10-14 20:03:10,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75519441f/c9772142988e43c58db80f088fb5ef16/FLAG783db4e2c [2020-10-14 20:03:11,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75519441f/c9772142988e43c58db80f088fb5ef16 [2020-10-14 20:03:11,256 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 20:03:11,258 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 20:03:11,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 20:03:11,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 20:03:11,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 20:03:11,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:03:11" (1/1) ... [2020-10-14 20:03:11,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693a331e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:11, skipping insertion in model container [2020-10-14 20:03:11,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:03:11" (1/1) ... [2020-10-14 20:03:11,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 20:03:11,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 20:03:13,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:03:13,772 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 20:03:14,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:03:14,906 INFO L208 MainTranslator]: Completed translation [2020-10-14 20:03:14,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:14 WrapperNode [2020-10-14 20:03:14,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 20:03:14,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 20:03:14,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 20:03:14,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 20:03:14,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:14" (1/1) ... [2020-10-14 20:03:14,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:14" (1/1) ... [2020-10-14 20:03:15,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:14" (1/1) ... [2020-10-14 20:03:15,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:14" (1/1) ... [2020-10-14 20:03:15,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:14" (1/1) ... [2020-10-14 20:03:15,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:14" (1/1) ... [2020-10-14 20:03:15,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:14" (1/1) ... [2020-10-14 20:03:15,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 20:03:15,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 20:03:15,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 20:03:15,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 20:03:15,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 20:03:15,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 20:03:15,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 20:03:15,547 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 20:03:15,547 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 20:03:15,547 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 20:03:15,548 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 20:03:15,548 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 20:03:15,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 20:03:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 20:03:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 20:03:15,549 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 20:03:15,549 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 20:03:15,549 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 20:03:15,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 20:03:15,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 20:03:15,550 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 20:03:15,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 20:03:15,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 20:03:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 20:03:22,796 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 20:03:22,796 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 20:03:22,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:03:22 BoogieIcfgContainer [2020-10-14 20:03:22,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 20:03:22,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 20:03:22,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 20:03:22,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 20:03:22,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:03:11" (1/3) ... [2020-10-14 20:03:22,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbe07c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:03:22, skipping insertion in model container [2020-10-14 20:03:22,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:14" (2/3) ... [2020-10-14 20:03:22,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbe07c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:03:22, skipping insertion in model container [2020-10-14 20:03:22,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:03:22" (3/3) ... [2020-10-14 20:03:22,819 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label48.c [2020-10-14 20:03:22,830 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 20:03:22,841 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 20:03:22,856 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 20:03:22,887 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 20:03:22,887 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 20:03:22,887 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 20:03:22,887 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 20:03:22,887 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 20:03:22,888 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 20:03:22,888 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 20:03:22,888 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 20:03:22,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 20:03:23,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2020-10-14 20:03:23,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:03:23,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:03:23,004 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:03:23,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:03:23,011 INFO L82 PathProgramCache]: Analyzing trace with hash 830526608, now seen corresponding path program 1 times [2020-10-14 20:03:23,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:03:23,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792844502] [2020-10-14 20:03:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:03:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:24,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:26,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:29,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:29,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 969 [2020-10-14 20:03:29,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:03:29,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 20:03:29,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:29,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:29,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 20:03:29,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:03:29,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 963 [2020-10-14 20:03:29,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 20:03:30,428 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:03:30,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:03:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:30,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:30,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:30,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:03:30,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:03:30,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 20:03:30,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:30,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:30,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:03:30,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:03:30,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:03:30,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:03:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:03:31,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792844502] [2020-10-14 20:03:31,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:03:31,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 20:03:31,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174320684] [2020-10-14 20:03:31,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 20:03:31,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:03:31,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 20:03:31,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 20:03:31,507 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 4 states. [2020-10-14 20:03:31,694 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:03:44,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:03:44,532 INFO L93 Difference]: Finished difference Result 3765 states and 7006 transitions. [2020-10-14 20:03:44,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:03:44,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 953 [2020-10-14 20:03:44,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:03:44,576 INFO L225 Difference]: With dead ends: 3765 [2020-10-14 20:03:44,576 INFO L226 Difference]: Without dead ends: 2386 [2020-10-14 20:03:44,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:03:44,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2020-10-14 20:03:44,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2373. [2020-10-14 20:03:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2373 states. [2020-10-14 20:03:44,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3971 transitions. [2020-10-14 20:03:44,758 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3971 transitions. Word has length 953 [2020-10-14 20:03:44,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:03:44,761 INFO L479 AbstractCegarLoop]: Abstraction has 2373 states and 3971 transitions. [2020-10-14 20:03:44,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 20:03:44,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3971 transitions. [2020-10-14 20:03:44,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2020-10-14 20:03:44,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:03:44,798 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:03:44,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 20:03:44,799 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:03:44,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:03:44,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1590448205, now seen corresponding path program 1 times [2020-10-14 20:03:44,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:03:44,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435947134] [2020-10-14 20:03:44,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:03:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:45,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:46,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:50,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:50,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 983 [2020-10-14 20:03:50,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:03:50,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5145 [2020-10-14 20:03:50,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:50,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:50,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 20:03:50,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 20:03:50,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 960 [2020-10-14 20:03:50,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 20:03:51,745 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:03:51,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:03:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:51,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:51,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:51,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:03:51,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:03:51,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 20:03:51,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:51,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:03:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:03:51,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:03:51,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 20:03:51,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:03:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:51,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:51,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:51,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 20:03:51,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:03:51,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 20:03:51,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:51,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:03:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:03:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 20:03:51,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:03:52,896 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:03:52,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435947134] [2020-10-14 20:03:52,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:03:52,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 20:03:52,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737871736] [2020-10-14 20:03:52,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:03:52,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:03:52,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:03:52,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:03:52,902 INFO L87 Difference]: Start difference. First operand 2373 states and 3971 transitions. Second operand 6 states. [2020-10-14 20:03:53,034 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 20:03:53,251 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:04:14,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:04:14,360 INFO L93 Difference]: Finished difference Result 9001 states and 15409 transitions. [2020-10-14 20:04:14,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:04:14,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 965 [2020-10-14 20:04:14,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:04:14,401 INFO L225 Difference]: With dead ends: 9001 [2020-10-14 20:04:14,401 INFO L226 Difference]: Without dead ends: 6634 [2020-10-14 20:04:14,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:04:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6634 states. [2020-10-14 20:04:14,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 6531. [2020-10-14 20:04:14,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6531 states. [2020-10-14 20:04:14,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6531 states to 6531 states and 10378 transitions. [2020-10-14 20:04:14,596 INFO L78 Accepts]: Start accepts. Automaton has 6531 states and 10378 transitions. Word has length 965 [2020-10-14 20:04:14,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:04:14,598 INFO L479 AbstractCegarLoop]: Abstraction has 6531 states and 10378 transitions. [2020-10-14 20:04:14,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:04:14,598 INFO L276 IsEmpty]: Start isEmpty. Operand 6531 states and 10378 transitions. [2020-10-14 20:04:14,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 970 [2020-10-14 20:04:14,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:04:14,632 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:04:14,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 20:04:14,633 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:04:14,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:04:14,633 INFO L82 PathProgramCache]: Analyzing trace with hash 203125461, now seen corresponding path program 1 times [2020-10-14 20:04:14,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:04:14,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895007200] [2020-10-14 20:04:14,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:04:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:14,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:16,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:19,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:19,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 987 [2020-10-14 20:04:19,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:04:19,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5162 [2020-10-14 20:04:19,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:19,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 20:04:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:04:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 981 [2020-10-14 20:04:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:04:20,733 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:04:20,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:04:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:20,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:20,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:20,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:04:20,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:04:20,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 20:04:20,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:20,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:20,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:04:20,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:04:20,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:04:20,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:04:20,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:04:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:20,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:20,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:20,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:20,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:04:20,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:04:20,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 20:04:20,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:20,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:04:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:04:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 20:04:20,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:04:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 20:04:21,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895007200] [2020-10-14 20:04:21,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:04:21,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:04:21,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030135349] [2020-10-14 20:04:21,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:04:21,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:04:21,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:04:21,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:04:21,761 INFO L87 Difference]: Start difference. First operand 6531 states and 10378 transitions. Second operand 6 states. [2020-10-14 20:04:21,897 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:04:37,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:04:37,364 INFO L93 Difference]: Finished difference Result 19451 states and 31756 transitions. [2020-10-14 20:04:37,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:04:37,368 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 969 [2020-10-14 20:04:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:04:37,441 INFO L225 Difference]: With dead ends: 19451 [2020-10-14 20:04:37,441 INFO L226 Difference]: Without dead ends: 12926 [2020-10-14 20:04:37,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:04:37,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12926 states. [2020-10-14 20:04:37,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12926 to 12884. [2020-10-14 20:04:37,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12884 states. [2020-10-14 20:04:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12884 states to 12884 states and 19353 transitions. [2020-10-14 20:04:37,838 INFO L78 Accepts]: Start accepts. Automaton has 12884 states and 19353 transitions. Word has length 969 [2020-10-14 20:04:37,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:04:37,840 INFO L479 AbstractCegarLoop]: Abstraction has 12884 states and 19353 transitions. [2020-10-14 20:04:37,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:04:37,840 INFO L276 IsEmpty]: Start isEmpty. Operand 12884 states and 19353 transitions. [2020-10-14 20:04:37,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2020-10-14 20:04:37,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:04:37,890 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:04:37,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 20:04:37,892 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:04:37,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:04:37,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1911768934, now seen corresponding path program 1 times [2020-10-14 20:04:37,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:04:37,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094299794] [2020-10-14 20:04:37,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:04:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:38,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:38,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:43,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:43,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 994 [2020-10-14 20:04:43,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:04:43,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5193 [2020-10-14 20:04:43,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:43,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:43,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 20:04:43,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 20:04:43,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 960 [2020-10-14 20:04:43,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:04:44,500 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:04:44,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:04:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:44,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:44,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:44,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:04:44,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:04:44,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 20:04:44,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:44,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:44,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:04:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:04:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:04:44,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:04:44,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:04:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:44,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:44,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:44,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 20:04:44,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:04:44,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 20:04:44,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:44,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:44,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:04:44,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:04:44,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:04:44,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:04:44,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 20:04:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:44,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:44,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:44,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 20:04:44,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:04:44,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 20:04:44,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:44,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:04:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:04:44,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 20:04:44,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:04:45,450 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 20:04:45,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094299794] [2020-10-14 20:04:45,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:04:45,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:04:45,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499299646] [2020-10-14 20:04:45,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:04:45,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:04:45,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:04:45,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:04:45,453 INFO L87 Difference]: Start difference. First operand 12884 states and 19353 transitions. Second operand 5 states. [2020-10-14 20:04:45,654 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:05:00,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:05:00,533 INFO L93 Difference]: Finished difference Result 32028 states and 50066 transitions. [2020-10-14 20:05:00,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:05:00,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 974 [2020-10-14 20:05:00,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:05:00,621 INFO L225 Difference]: With dead ends: 32028 [2020-10-14 20:05:00,621 INFO L226 Difference]: Without dead ends: 19150 [2020-10-14 20:05:00,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:05:00,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19150 states. [2020-10-14 20:05:01,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19150 to 19122. [2020-10-14 20:05:01,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19122 states. [2020-10-14 20:05:01,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19122 states to 19122 states and 28451 transitions. [2020-10-14 20:05:01,145 INFO L78 Accepts]: Start accepts. Automaton has 19122 states and 28451 transitions. Word has length 974 [2020-10-14 20:05:01,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:05:01,146 INFO L479 AbstractCegarLoop]: Abstraction has 19122 states and 28451 transitions. [2020-10-14 20:05:01,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:05:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 19122 states and 28451 transitions. [2020-10-14 20:05:01,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2020-10-14 20:05:01,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:05:01,220 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:05:01,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 20:05:01,221 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:05:01,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:05:01,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1751894473, now seen corresponding path program 1 times [2020-10-14 20:05:01,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:05:01,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764227633] [2020-10-14 20:05:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:05:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:01,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:01,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:06,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:06,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1009 [2020-10-14 20:05:06,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:05:06,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-14 20:05:06,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:06,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:05:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:05:06,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 20:05:06,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:07,062 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:05:07,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:05:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:07,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:07,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:07,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:05:07,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:07,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 20:05:07,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:07,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:05:07,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:05:07,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:05:07,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:07,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:05:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:07,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:07,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:07,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 20:05:07,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:07,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 20:05:07,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:07,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:07,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:05:07,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:05:07,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 20:05:07,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:07,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 20:05:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:07,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:07,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:07,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:05:07,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:07,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 20:05:07,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:07,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:05:07,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 20:05:07,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:05:07,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:05:07,875 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 20:05:07,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764227633] [2020-10-14 20:05:07,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:05:07,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:05:07,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841775738] [2020-10-14 20:05:07,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:05:07,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:05:07,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:05:07,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:05:07,879 INFO L87 Difference]: Start difference. First operand 19122 states and 28451 transitions. Second operand 7 states. [2020-10-14 20:05:08,019 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:05:09,308 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:05:25,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:05:25,203 INFO L93 Difference]: Finished difference Result 58565 states and 95385 transitions. [2020-10-14 20:05:25,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:05:25,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 989 [2020-10-14 20:05:25,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:05:25,362 INFO L225 Difference]: With dead ends: 58565 [2020-10-14 20:05:25,363 INFO L226 Difference]: Without dead ends: 39449 [2020-10-14 20:05:25,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:05:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39449 states. [2020-10-14 20:05:26,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39449 to 39259. [2020-10-14 20:05:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39259 states. [2020-10-14 20:05:26,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39259 states to 39259 states and 59820 transitions. [2020-10-14 20:05:26,536 INFO L78 Accepts]: Start accepts. Automaton has 39259 states and 59820 transitions. Word has length 989 [2020-10-14 20:05:26,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:05:26,537 INFO L479 AbstractCegarLoop]: Abstraction has 39259 states and 59820 transitions. [2020-10-14 20:05:26,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:05:26,537 INFO L276 IsEmpty]: Start isEmpty. Operand 39259 states and 59820 transitions. [2020-10-14 20:05:26,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2020-10-14 20:05:26,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:05:26,645 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:05:26,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 20:05:26,645 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:05:26,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:05:26,646 INFO L82 PathProgramCache]: Analyzing trace with hash 73816056, now seen corresponding path program 1 times [2020-10-14 20:05:26,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:05:26,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312577574] [2020-10-14 20:05:26,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:05:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:26,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:26,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:27,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:31,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:31,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1024 [2020-10-14 20:05:31,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:05:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-14 20:05:31,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:31,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:05:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 20:05:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 20:05:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:05:32,122 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:05:32,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:05:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:32,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:32,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:32,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:05:32,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:32,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 20:05:32,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:32,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:32,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:05:32,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:05:32,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:05:32,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:05:32,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:05:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:32,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:32,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:32,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 20:05:32,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:32,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 20:05:32,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:32,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:05:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:05:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 20:05:32,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:05:32,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 20:05:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:32,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:32,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:32,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 20:05:32,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:32,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 20:05:32,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:32,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:32,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:05:32,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:05:32,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 20:05:32,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:05:32,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 20:05:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:32,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:32,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:32,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:05:32,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:32,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 20:05:32,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:32,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:32,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:05:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 20:05:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:05:32,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:33,165 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 52 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 20:05:33,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312577574] [2020-10-14 20:05:33,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:05:33,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:05:33,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209264078] [2020-10-14 20:05:33,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:05:33,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:05:33,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:05:33,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:05:33,168 INFO L87 Difference]: Start difference. First operand 39259 states and 59820 transitions. Second operand 7 states. [2020-10-14 20:05:33,318 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:05:34,425 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 20:05:49,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:05:49,272 INFO L93 Difference]: Finished difference Result 92921 states and 149545 transitions. [2020-10-14 20:05:49,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 20:05:49,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1002 [2020-10-14 20:05:49,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:05:49,492 INFO L225 Difference]: With dead ends: 92921 [2020-10-14 20:05:49,492 INFO L226 Difference]: Without dead ends: 53668 [2020-10-14 20:05:49,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:05:49,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53668 states. [2020-10-14 20:05:50,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53668 to 53499. [2020-10-14 20:05:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53499 states. [2020-10-14 20:05:51,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53499 states to 53499 states and 82930 transitions. [2020-10-14 20:05:51,037 INFO L78 Accepts]: Start accepts. Automaton has 53499 states and 82930 transitions. Word has length 1002 [2020-10-14 20:05:51,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:05:51,038 INFO L479 AbstractCegarLoop]: Abstraction has 53499 states and 82930 transitions. [2020-10-14 20:05:51,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:05:51,038 INFO L276 IsEmpty]: Start isEmpty. Operand 53499 states and 82930 transitions. [2020-10-14 20:05:51,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2020-10-14 20:05:51,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:05:51,220 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:05:51,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 20:05:51,221 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:05:51,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:05:51,222 INFO L82 PathProgramCache]: Analyzing trace with hash -946705934, now seen corresponding path program 1 times [2020-10-14 20:05:51,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:05:51,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248695474] [2020-10-14 20:05:51,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:05:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:51,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:51,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:53,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:56,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:56,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1043 [2020-10-14 20:05:56,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:05:56,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 20:05:56,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:56,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 20:05:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:05:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 20:05:56,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:05:56,669 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:05:56,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:05:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:56,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:56,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:56,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:05:56,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:56,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 20:05:56,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:56,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:05:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:05:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:05:56,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:05:56,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:05:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:56,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:56,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:56,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 20:05:56,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:56,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 20:05:56,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:56,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:05:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:05:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 20:05:56,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:05:56,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 20:05:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:56,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:56,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:56,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:05:56,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 20:05:56,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:56,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:05:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 20:05:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:05:56,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:05:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 60 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 20:05:57,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248695474] [2020-10-14 20:05:57,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:05:57,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:05:57,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708201907] [2020-10-14 20:05:57,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:05:57,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:05:57,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:05:57,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:05:57,540 INFO L87 Difference]: Start difference. First operand 53499 states and 82930 transitions. Second operand 7 states. [2020-10-14 20:05:57,689 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:05:58,723 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 20:06:15,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:06:15,034 INFO L93 Difference]: Finished difference Result 160178 states and 270717 transitions. [2020-10-14 20:06:15,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:06:15,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1023 [2020-10-14 20:06:15,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:06:15,502 INFO L225 Difference]: With dead ends: 160178 [2020-10-14 20:06:15,502 INFO L226 Difference]: Without dead ends: 106685 [2020-10-14 20:06:15,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 20:06:15,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106685 states. [2020-10-14 20:06:20,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106685 to 106378. [2020-10-14 20:06:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106378 states. [2020-10-14 20:06:20,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106378 states to 106378 states and 162588 transitions. [2020-10-14 20:06:20,387 INFO L78 Accepts]: Start accepts. Automaton has 106378 states and 162588 transitions. Word has length 1023 [2020-10-14 20:06:20,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:06:20,388 INFO L479 AbstractCegarLoop]: Abstraction has 106378 states and 162588 transitions. [2020-10-14 20:06:20,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:06:20,388 INFO L276 IsEmpty]: Start isEmpty. Operand 106378 states and 162588 transitions. [2020-10-14 20:06:20,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2020-10-14 20:06:20,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:06:20,760 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 20:06:20,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 20:06:20,761 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:06:20,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:06:20,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1129449857, now seen corresponding path program 1 times [2020-10-14 20:06:20,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:06:20,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244180179] [2020-10-14 20:06:20,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:06:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:20,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:21,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:23,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:25,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:25,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1051 [2020-10-14 20:06:25,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:06:25,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-14 20:06:25,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:25,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:25,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 20:06:25,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:06:25,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 20:06:25,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:26,303 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:06:26,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:06:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:26,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:26,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:26,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:06:26,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:06:26,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 20:06:26,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:26,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:06:26,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:06:26,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:06:26,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:26,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:06:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:26,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:26,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:26,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 20:06:26,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:06:26,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 20:06:26,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:26,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:26,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:06:26,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:06:26,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 20:06:26,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:26,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 20:06:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:26,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:26,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:26,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 20:06:26,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:06:26,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 20:06:26,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:26,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:26,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:06:26,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:06:26,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 20:06:26,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:26,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 20:06:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:26,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:26,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:26,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 20:06:26,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:06:26,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 20:06:26,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:26,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:06:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:06:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 20:06:26,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:26,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 20:06:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:26,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:26,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:06:26,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:06:26,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 20:06:26,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:26,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:06:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 20:06:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:06:26,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:27,542 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 98 proven. 30 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 20:06:27,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244180179] [2020-10-14 20:06:27,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:06:27,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 20:06:27,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479225551] [2020-10-14 20:06:27,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 20:06:27,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:06:27,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 20:06:27,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 20:06:27,545 INFO L87 Difference]: Start difference. First operand 106378 states and 162588 transitions. Second operand 10 states. [2020-10-14 20:06:27,702 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:06:28,136 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 131 [2020-10-14 20:06:28,588 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2020-10-14 20:06:29,821 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 20:06:31,114 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 132