/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=BIGGEST --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/Problem03_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:16:34,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:16:34,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:16:34,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:16:34,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:16:34,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:16:34,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:16:34,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:16:34,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:16:34,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:16:34,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:16:34,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:16:34,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:16:34,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:16:34,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:16:34,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:16:34,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:16:34,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:16:34,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:16:34,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:16:34,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:16:34,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:16:34,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:16:34,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:16:34,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:16:34,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:16:34,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:16:34,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:16:34,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:16:34,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:16:34,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:16:34,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:16:34,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:16:34,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:16:34,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:16:34,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:16:34,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:16:34,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:16:34,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:16:34,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:16:34,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:16:34,136 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 [2020-10-12 11:16:34,174 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:16:34,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:16:34,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:16:34,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:16:34,177 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:16:34,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:16:34,177 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:16:34,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:16:34,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:16:34,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:16:34,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:16:34,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:16:34,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:16:34,180 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:16:34,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:16:34,181 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:16:34,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:16:34,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:16:34,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:16:34,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:16:34,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:16:34,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:16:34,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:16:34,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:16:34,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:16:34,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:16:34,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:16:34,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:16:34,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:16:34,183 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:16:34,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:16:34,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:16:34,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:16:34,533 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:16:34,533 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:16:34,534 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label10.c [2020-10-12 11:16:34,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fe614456/b2d1ff30474444339491fc1f3a754737/FLAG5a6d4325f [2020-10-12 11:16:35,240 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:16:35,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label10.c [2020-10-12 11:16:35,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fe614456/b2d1ff30474444339491fc1f3a754737/FLAG5a6d4325f [2020-10-12 11:16:35,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fe614456/b2d1ff30474444339491fc1f3a754737 [2020-10-12 11:16:35,371 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:16:35,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:16:35,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:16:35,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:16:35,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:16:35,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:16:35" (1/1) ... [2020-10-12 11:16:35,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201c87a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:35, skipping insertion in model container [2020-10-12 11:16:35,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:16:35" (1/1) ... [2020-10-12 11:16:35,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:16:35,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:16:36,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:16:36,377 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:16:36,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:16:36,783 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:16:36,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:36 WrapperNode [2020-10-12 11:16:36,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:16:36,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:16:36,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:16:36,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:16:36,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:36" (1/1) ... [2020-10-12 11:16:36,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:36" (1/1) ... [2020-10-12 11:16:36,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:36" (1/1) ... [2020-10-12 11:16:36,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:36" (1/1) ... [2020-10-12 11:16:36,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:36" (1/1) ... [2020-10-12 11:16:36,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:36" (1/1) ... [2020-10-12 11:16:36,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:36" (1/1) ... [2020-10-12 11:16:36,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:16:36,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:16:36,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:16:36,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:16:36,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:36" (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 [2020-10-12 11:16:37,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:16:37,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:16:37,037 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:16:37,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:16:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:16:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:16:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:16:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:16:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:16:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:16:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:16:38,854 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:16:38,855 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:16:38,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:16:38 BoogieIcfgContainer [2020-10-12 11:16:38,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:16:38,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:16:38,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:16:38,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:16:38,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:16:35" (1/3) ... [2020-10-12 11:16:38,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634e2f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:16:38, skipping insertion in model container [2020-10-12 11:16:38,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:36" (2/3) ... [2020-10-12 11:16:38,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634e2f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:16:38, skipping insertion in model container [2020-10-12 11:16:38,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:16:38" (3/3) ... [2020-10-12 11:16:38,871 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label10.c [2020-10-12 11:16:38,882 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:16:38,890 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:16:38,904 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:16:38,932 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:16:38,932 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:16:38,932 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:16:38,932 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:16:38,932 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:16:38,933 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:16:38,933 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:16:38,933 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:16:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-12 11:16:38,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-12 11:16:38,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:16:38,978 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] [2020-10-12 11:16:38,978 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:16:38,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:16:38,986 INFO L82 PathProgramCache]: Analyzing trace with hash 430860112, now seen corresponding path program 1 times [2020-10-12 11:16:38,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:16:38,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995312008] [2020-10-12 11:16:38,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:16:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:39,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:39,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:44,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:44,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-12 11:16:44,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:16:44,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 11:16:44,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:16:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:16:44,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:16:44,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 11:16:45,648 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-12 11:16:45,855 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-12 11:16:46,094 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2020-10-12 11:16:46,335 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2020-10-12 11:16:46,734 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 90 [2020-10-12 11:16:47,080 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 83 [2020-10-12 11:16:47,418 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 77 [2020-10-12 11:16:47,763 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 73 [2020-10-12 11:16:48,028 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 58 [2020-10-12 11:16:48,184 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:16:48,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:16:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:48,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:48,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:48,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:16:48,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:16:48,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 11:16:48,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:48,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:16:48,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:16:48,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:16:48,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:16:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:16:48,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995312008] [2020-10-12 11:16:48,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:16:48,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 11:16:48,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391504067] [2020-10-12 11:16:48,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 11:16:48,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:16:48,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 11:16:48,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:16:48,899 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-12 11:16:49,304 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-12 11:16:50,072 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 178 [2020-10-12 11:16:50,756 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 177 [2020-10-12 11:16:51,564 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 185 [2020-10-12 11:16:52,809 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 220 DAG size of output: 182 [2020-10-12 11:16:54,227 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 221 DAG size of output: 181 [2020-10-12 11:16:55,776 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 224 DAG size of output: 180 [2020-10-12 11:16:59,172 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 225 DAG size of output: 179 [2020-10-12 11:17:00,219 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 177 [2020-10-12 11:17:03,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:03,151 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-12 11:17:03,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:17:03,153 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 187 [2020-10-12 11:17:03,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:03,170 INFO L225 Difference]: With dead ends: 737 [2020-10-12 11:17:03,170 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 11:17:03,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-12 11:17:03,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 11:17:03,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-12 11:17:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 11:17:03,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-12 11:17:03,251 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 187 [2020-10-12 11:17:03,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:03,252 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-12 11:17:03,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 11:17:03,253 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-12 11:17:03,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-12 11:17:03,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:03,258 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 11:17:03,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:17:03,259 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:03,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:03,260 INFO L82 PathProgramCache]: Analyzing trace with hash 270975863, now seen corresponding path program 1 times [2020-10-12 11:17:03,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:03,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093399235] [2020-10-12 11:17:03,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:03,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:03,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:06,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:07,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:07,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-12 11:17:07,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:17:07,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4500 [2020-10-12 11:17:07,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:07,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:17:07,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:07,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 11:17:07,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:09,078 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 77 [2020-10-12 11:17:09,305 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2020-10-12 11:17:09,515 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2020-10-12 11:17:09,708 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2020-10-12 11:17:09,879 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2020-10-12 11:17:10,018 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:10,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:10,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:10,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:10,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:10,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:10,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:17:10,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:10,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:10,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:10,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:10,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:10,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:17:10,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:10,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 11:17:10,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:10,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:17:10,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:10,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:17:10,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:10,475 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 84 [2020-10-12 11:17:10,807 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 109 [2020-10-12 11:17:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:17:11,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093399235] [2020-10-12 11:17:11,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:11,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 11:17:11,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129650256] [2020-10-12 11:17:11,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 11:17:11,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:11,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 11:17:11,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:17:11,299 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-12 11:17:11,589 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-12 11:17:11,872 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2020-10-12 11:17:12,255 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 11:17:12,566 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 11:17:13,387 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 171 [2020-10-12 11:17:13,980 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-12 11:17:15,106 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 170 [2020-10-12 11:17:16,975 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 169 [2020-10-12 11:17:19,453 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 168 [2020-10-12 11:17:20,196 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 166 [2020-10-12 11:17:21,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:21,853 INFO L93 Difference]: Finished difference Result 756 states and 1212 transitions. [2020-10-12 11:17:21,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:17:21,856 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 198 [2020-10-12 11:17:21,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:21,862 INFO L225 Difference]: With dead ends: 756 [2020-10-12 11:17:21,862 INFO L226 Difference]: Without dead ends: 513 [2020-10-12 11:17:21,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2020-10-12 11:17:21,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-10-12 11:17:21,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 509. [2020-10-12 11:17:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-12 11:17:21,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 677 transitions. [2020-10-12 11:17:21,919 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 677 transitions. Word has length 198 [2020-10-12 11:17:21,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:21,921 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 677 transitions. [2020-10-12 11:17:21,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 11:17:21,921 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 677 transitions. [2020-10-12 11:17:21,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-12 11:17:21,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:21,930 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 11:17:21,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:17:21,931 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:21,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:21,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1557455957, now seen corresponding path program 1 times [2020-10-12 11:17:21,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:21,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468783485] [2020-10-12 11:17:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:22,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:22,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:23,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:23,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:23,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-12 11:17:23,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:17:23,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1877 [2020-10-12 11:17:23,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:17:23,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:23,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-12 11:17:23,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:24,232 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:24,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:24,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:24,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:24,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:24,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:24,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:17:24,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:24,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:24,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:24,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:24,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:24,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:24,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:24,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:24,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:24,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:24,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:24,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-12 11:17:24,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:24,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:24,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:17:24,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 11:17:24,728 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:17:24,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468783485] [2020-10-12 11:17:24,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:24,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:17:24,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290833363] [2020-10-12 11:17:24,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:17:24,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:24,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:17:24,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:17:24,735 INFO L87 Difference]: Start difference. First operand 509 states and 677 transitions. Second operand 6 states. [2020-10-12 11:17:24,885 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:27,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:27,634 INFO L93 Difference]: Finished difference Result 1006 states and 1494 transitions. [2020-10-12 11:17:27,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:17:27,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2020-10-12 11:17:27,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:27,641 INFO L225 Difference]: With dead ends: 1006 [2020-10-12 11:17:27,641 INFO L226 Difference]: Without dead ends: 763 [2020-10-12 11:17:27,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:17:27,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2020-10-12 11:17:27,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 757. [2020-10-12 11:17:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 757 states. [2020-10-12 11:17:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1065 transitions. [2020-10-12 11:17:27,687 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1065 transitions. Word has length 208 [2020-10-12 11:17:27,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:27,688 INFO L479 AbstractCegarLoop]: Abstraction has 757 states and 1065 transitions. [2020-10-12 11:17:27,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:17:27,688 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1065 transitions. [2020-10-12 11:17:27,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-12 11:17:27,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:27,693 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-12 11:17:27,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:17:27,693 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:27,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:27,694 INFO L82 PathProgramCache]: Analyzing trace with hash 773794776, now seen corresponding path program 1 times [2020-10-12 11:17:27,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:27,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948051359] [2020-10-12 11:17:27,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:27,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:28,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:28,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:30,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:31,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:31,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-12 11:17:31,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:17:31,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3750 [2020-10-12 11:17:31,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:31,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:17:31,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:31,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:17:31,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:31,642 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:31,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:31,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:31,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:31,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:31,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:31,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:17:31,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:31,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:31,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:31,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:31,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:17:31,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:31,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:31,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:31,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:31,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:31,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 11:17:31,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:31,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:31,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:31,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:17:31,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:31,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:31,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:31,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:31,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:17:31,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:31,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 11:17:31,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:31,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:31,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:31,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:17:31,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 11:17:32,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948051359] [2020-10-12 11:17:32,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:32,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:17:32,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200897193] [2020-10-12 11:17:32,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:17:32,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:32,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:17:32,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:17:32,030 INFO L87 Difference]: Start difference. First operand 757 states and 1065 transitions. Second operand 7 states. [2020-10-12 11:17:32,190 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:35,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:35,182 INFO L93 Difference]: Finished difference Result 1739 states and 2644 transitions. [2020-10-12 11:17:35,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:17:35,183 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-10-12 11:17:35,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:35,192 INFO L225 Difference]: With dead ends: 1739 [2020-10-12 11:17:35,192 INFO L226 Difference]: Without dead ends: 1248 [2020-10-12 11:17:35,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:17:35,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2020-10-12 11:17:35,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1234. [2020-10-12 11:17:35,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1234 states. [2020-10-12 11:17:35,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1831 transitions. [2020-10-12 11:17:35,238 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1831 transitions. Word has length 217 [2020-10-12 11:17:35,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:35,239 INFO L479 AbstractCegarLoop]: Abstraction has 1234 states and 1831 transitions. [2020-10-12 11:17:35,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:17:35,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1831 transitions. [2020-10-12 11:17:35,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-12 11:17:35,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:35,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:17:35,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:17:35,245 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:35,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:35,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1516808132, now seen corresponding path program 1 times [2020-10-12 11:17:35,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:35,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572718658] [2020-10-12 11:17:35,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:35,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:35,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:36,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:36,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:36,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-12 11:17:36,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:17:36,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1523 [2020-10-12 11:17:36,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:36,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:17:36,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:17:36,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-12 11:17:36,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:37,041 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:37,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:37,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:37,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:37,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:37,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:37,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:17:37,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:17:37,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:37,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:17:37,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:37,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:37,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:37,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:37,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:37,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:37,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 11:17:37,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:37,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:37,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:37,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:17:37,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:37,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:37,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:37,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:37,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:17:37,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:37,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 11:17:37,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:37,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:37,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:37,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:17:37,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:37,320 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:17:37,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572718658] [2020-10-12 11:17:37,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:37,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:17:37,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594408829] [2020-10-12 11:17:37,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:17:37,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:37,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:17:37,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:17:37,323 INFO L87 Difference]: Start difference. First operand 1234 states and 1831 transitions. Second operand 6 states. [2020-10-12 11:17:37,480 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:40,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:40,095 INFO L93 Difference]: Finished difference Result 3144 states and 4976 transitions. [2020-10-12 11:17:40,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:17:40,096 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 219 [2020-10-12 11:17:40,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:40,108 INFO L225 Difference]: With dead ends: 3144 [2020-10-12 11:17:40,108 INFO L226 Difference]: Without dead ends: 2176 [2020-10-12 11:17:40,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:17:40,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2020-10-12 11:17:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2122. [2020-10-12 11:17:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2122 states. [2020-10-12 11:17:40,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3276 transitions. [2020-10-12 11:17:40,181 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3276 transitions. Word has length 219 [2020-10-12 11:17:40,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:40,182 INFO L479 AbstractCegarLoop]: Abstraction has 2122 states and 3276 transitions. [2020-10-12 11:17:40,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:17:40,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3276 transitions. [2020-10-12 11:17:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-12 11:17:40,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:40,191 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:17:40,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:17:40,191 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:40,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:40,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1924879000, now seen corresponding path program 1 times [2020-10-12 11:17:40,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:40,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159275187] [2020-10-12 11:17:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:40,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:40,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:41,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:41,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-12 11:17:41,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:41,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1292 [2020-10-12 11:17:41,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:41,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:17:41,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:41,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:17:41,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:41,694 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:41,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:41,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:41,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:41,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:41,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:41,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:17:41,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:41,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:41,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:41,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:41,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:41,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:41,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:41,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:41,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 11:17:41,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:41,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:41,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:41,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:17:41,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:41,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:41,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:41,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:41,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:17:41,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:41,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 11:17:41,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:41,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:41,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:41,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:17:41,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:42,008 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:17:42,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159275187] [2020-10-12 11:17:42,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:42,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:17:42,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820857820] [2020-10-12 11:17:42,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:17:42,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:42,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:17:42,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:17:42,010 INFO L87 Difference]: Start difference. First operand 2122 states and 3276 transitions. Second operand 8 states. [2020-10-12 11:17:42,150 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:43,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:43,854 INFO L93 Difference]: Finished difference Result 3912 states and 6245 transitions. [2020-10-12 11:17:43,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:17:43,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-10-12 11:17:43,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:43,875 INFO L225 Difference]: With dead ends: 3912 [2020-10-12 11:17:43,876 INFO L226 Difference]: Without dead ends: 2056 [2020-10-12 11:17:43,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:17:43,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2020-10-12 11:17:43,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 2050. [2020-10-12 11:17:43,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2050 states. [2020-10-12 11:17:43,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 3057 transitions. [2020-10-12 11:17:43,958 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 3057 transitions. Word has length 225 [2020-10-12 11:17:43,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:43,958 INFO L479 AbstractCegarLoop]: Abstraction has 2050 states and 3057 transitions. [2020-10-12 11:17:43,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:17:43,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 3057 transitions. [2020-10-12 11:17:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-12 11:17:43,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:43,966 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:17:43,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:17:43,967 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:43,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:43,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1233347501, now seen corresponding path program 1 times [2020-10-12 11:17:43,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:43,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312375785] [2020-10-12 11:17:43,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:44,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:44,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:44,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:44,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:46,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:49,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:49,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-12 11:17:49,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:17:49,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-12 11:17:49,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:49,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:17:49,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:17:49,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 11:17:49,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:49,214 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:49,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:49,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:49,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:49,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:49,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:49,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:17:49,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:17:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:17:49,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:49,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:49,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:49,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:49,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:49,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:49,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 11:17:49,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:49,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:17:49,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:49,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:49,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:49,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:49,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:49,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:17:49,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:49,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 11:17:49,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:49,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:17:49,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:17:49,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 11:17:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:49,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:49,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:49,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:17:49,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:49,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 11:17:49,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:49,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:49,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:49,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:17:49,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 11:17:49,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312375785] [2020-10-12 11:17:49,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:49,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:17:49,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789797561] [2020-10-12 11:17:49,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:17:49,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:49,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:17:49,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:17:49,545 INFO L87 Difference]: Start difference. First operand 2050 states and 3057 transitions. Second operand 8 states. [2020-10-12 11:17:49,806 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:50,058 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:50,912 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:56,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:56,057 INFO L93 Difference]: Finished difference Result 7930 states and 13921 transitions. [2020-10-12 11:17:56,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 11:17:56,058 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 229 [2020-10-12 11:17:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:56,107 INFO L225 Difference]: With dead ends: 7930 [2020-10-12 11:17:56,107 INFO L226 Difference]: Without dead ends: 6146 [2020-10-12 11:17:56,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:17:56,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6146 states. [2020-10-12 11:17:56,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6146 to 6059. [2020-10-12 11:17:56,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6059 states. [2020-10-12 11:17:56,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6059 states to 6059 states and 9301 transitions. [2020-10-12 11:17:56,347 INFO L78 Accepts]: Start accepts. Automaton has 6059 states and 9301 transitions. Word has length 229 [2020-10-12 11:17:56,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:56,348 INFO L479 AbstractCegarLoop]: Abstraction has 6059 states and 9301 transitions. [2020-10-12 11:17:56,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:17:56,348 INFO L276 IsEmpty]: Start isEmpty. Operand 6059 states and 9301 transitions. [2020-10-12 11:17:56,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-12 11:17:56,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:56,373 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:17:56,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:17:56,373 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:56,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:56,374 INFO L82 PathProgramCache]: Analyzing trace with hash 534715047, now seen corresponding path program 1 times [2020-10-12 11:17:56,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:56,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913176295] [2020-10-12 11:17:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:56,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:56,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:57,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:59,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:59,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-12 11:17:59,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:17:59,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2536 [2020-10-12 11:17:59,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:17:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 11:17:59,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:59,191 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:59,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:59,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:59,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:59,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:59,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:59,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:17:59,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:59,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:59,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:59,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:59,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:59,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:59,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:59,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:59,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:59,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:59,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:59,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 11:17:59,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:17:59,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:59,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:59,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:59,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:59,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:17:59,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:59,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-12 11:17:59,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:59,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:59,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:59,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:17:59,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 61 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:17:59,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913176295] [2020-10-12 11:17:59,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:59,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:17:59,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89340315] [2020-10-12 11:17:59,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:17:59,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:59,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:17:59,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:17:59,903 INFO L87 Difference]: Start difference. First operand 6059 states and 9301 transitions. Second operand 8 states. [2020-10-12 11:18:00,086 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:18:01,411 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:18:03,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:03,363 INFO L93 Difference]: Finished difference Result 14368 states and 22544 transitions. [2020-10-12 11:18:03,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:18:03,363 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 253 [2020-10-12 11:18:03,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:03,412 INFO L225 Difference]: With dead ends: 14368 [2020-10-12 11:18:03,413 INFO L226 Difference]: Without dead ends: 8997 [2020-10-12 11:18:03,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-12 11:18:03,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8997 states. [2020-10-12 11:18:03,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8997 to 8957. [2020-10-12 11:18:03,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8957 states. [2020-10-12 11:18:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8957 states to 8957 states and 13918 transitions. [2020-10-12 11:18:03,705 INFO L78 Accepts]: Start accepts. Automaton has 8957 states and 13918 transitions. Word has length 253 [2020-10-12 11:18:03,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:03,706 INFO L479 AbstractCegarLoop]: Abstraction has 8957 states and 13918 transitions. [2020-10-12 11:18:03,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:18:03,706 INFO L276 IsEmpty]: Start isEmpty. Operand 8957 states and 13918 transitions. [2020-10-12 11:18:03,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-12 11:18:03,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:03,742 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:03,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:18:03,743 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:03,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:03,743 INFO L82 PathProgramCache]: Analyzing trace with hash -2043821928, now seen corresponding path program 1 times [2020-10-12 11:18:03,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:03,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990298839] [2020-10-12 11:18:03,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:03,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:04,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:07,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:08,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:08,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-12 11:18:08,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:18:08,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 11:18:08,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:08,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:18:08,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:18:08,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 11:18:08,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:08,987 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:08,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:08,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:09,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:09,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:09,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:09,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:18:09,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:18:09,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:09,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:09,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:09,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:09,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:18:09,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:09,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 11:18:09,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:18:09,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:09,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:18:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:09,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:09,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:09,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:18:09,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:09,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 11:18:09,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:18:09,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:18:09,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 11:18:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:09,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:09,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:09,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:18:09,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:09,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 11:18:09,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:09,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:18:09,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 11:18:09,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:18:09,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 84 proven. 35 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 11:18:09,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990298839] [2020-10-12 11:18:09,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:09,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:18:09,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184710732] [2020-10-12 11:18:09,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:18:09,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:09,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:18:09,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:18:09,495 INFO L87 Difference]: Start difference. First operand 8957 states and 13918 transitions. Second operand 7 states. [2020-10-12 11:18:09,640 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:18:11,797 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:18:12,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:12,744 INFO L93 Difference]: Finished difference Result 21724 states and 36189 transitions. [2020-10-12 11:18:12,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:18:12,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-12 11:18:12,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:12,835 INFO L225 Difference]: With dead ends: 21724 [2020-10-12 11:18:12,835 INFO L226 Difference]: Without dead ends: 13668 [2020-10-12 11:18:12,867 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 [2020-10-12 11:18:12,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13668 states. [2020-10-12 11:18:13,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13668 to 13479. [2020-10-12 11:18:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13479 states. [2020-10-12 11:18:13,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13479 states to 13479 states and 21557 transitions. [2020-10-12 11:18:13,357 INFO L78 Accepts]: Start accepts. Automaton has 13479 states and 21557 transitions. Word has length 275 [2020-10-12 11:18:13,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:13,358 INFO L479 AbstractCegarLoop]: Abstraction has 13479 states and 21557 transitions. [2020-10-12 11:18:13,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:18:13,358 INFO L276 IsEmpty]: Start isEmpty. Operand 13479 states and 21557 transitions. [2020-10-12 11:18:13,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-12 11:18:13,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:13,411 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:13,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:18:13,412 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:13,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:13,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1943534737, now seen corresponding path program 1 times [2020-10-12 11:18:13,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:13,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757338358] [2020-10-12 11:18:13,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:13,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:15,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:15,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-12 11:18:15,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:18:15,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2404 [2020-10-12 11:18:15,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:15,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:15,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:18:15,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 11:18:15,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:16,036 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:16,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:16,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:16,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:16,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:16,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:16,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:18:16,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:16,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:18:16,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:16,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:18:16,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:16,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:16,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:16,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:16,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:18:16,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:16,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:18:16,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:18:16,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:16,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:18:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:16,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:16,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:16,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 11:18:16,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:16,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 11:18:16,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 11:18:16,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 11:18:16,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757338358] [2020-10-12 11:18:16,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:16,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:18:16,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166138576] [2020-10-12 11:18:16,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:18:16,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:16,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:18:16,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:18:16,422 INFO L87 Difference]: Start difference. First operand 13479 states and 21557 transitions. Second operand 7 states. [2020-10-12 11:18:16,719 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:18:19,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:19,844 INFO L93 Difference]: Finished difference Result 38352 states and 71155 transitions. [2020-10-12 11:18:19,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:18:19,845 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-10-12 11:18:19,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:20,009 INFO L225 Difference]: With dead ends: 38352 [2020-10-12 11:18:20,010 INFO L226 Difference]: Without dead ends: 25139 [2020-10-12 11:18:20,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:18:20,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25139 states. [2020-10-12 11:18:21,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25139 to 24518. [2020-10-12 11:18:21,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24518 states. [2020-10-12 11:18:21,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24518 states to 24518 states and 39235 transitions. [2020-10-12 11:18:21,124 INFO L78 Accepts]: Start accepts. Automaton has 24518 states and 39235 transitions. Word has length 286 [2020-10-12 11:18:21,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:21,125 INFO L479 AbstractCegarLoop]: Abstraction has 24518 states and 39235 transitions. [2020-10-12 11:18:21,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:18:21,126 INFO L276 IsEmpty]: Start isEmpty. Operand 24518 states and 39235 transitions. [2020-10-12 11:18:21,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-12 11:18:21,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:21,230 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:21,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:18:21,230 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:21,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:21,230 INFO L82 PathProgramCache]: Analyzing trace with hash -2025185572, now seen corresponding path program 1 times [2020-10-12 11:18:21,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:21,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149108314] [2020-10-12 11:18:21,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:21,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:21,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:21,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:22,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:25,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:26,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:26,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:26,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-12 11:18:26,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 11:18:26,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 11:18:26,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:18:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:18:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 11:18:26,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:26,541 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:26,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:26,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:26,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:26,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:26,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:26,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:18:26,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:26,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:26,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:26,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:18:26,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:26,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:26,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:26,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:27,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:27,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:18:27,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:18:27,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-12 11:18:27,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:18:27,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:27,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:18:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:27,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:27,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:27,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:18:27,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:18:27,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:18:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:27,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 11:18:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:27,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:27,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:27,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:18:27,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:27,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:18:27,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:27,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:18:27,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 11:18:27,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:18:27,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 115 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:18:27,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149108314] [2020-10-12 11:18:27,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:27,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 11:18:27,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389088416] [2020-10-12 11:18:27,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:18:27,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:27,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:18:27,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:18:27,475 INFO L87 Difference]: Start difference. First operand 24518 states and 39235 transitions. Second operand 9 states. [2020-10-12 11:18:27,618 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:18:28,756 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 11:18:29,269 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:18:32,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:32,156 INFO L93 Difference]: Finished difference Result 64569 states and 105743 transitions. [2020-10-12 11:18:32,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:18:32,157 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 308 [2020-10-12 11:18:32,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:32,343 INFO L225 Difference]: With dead ends: 64569 [2020-10-12 11:18:32,343 INFO L226 Difference]: Without dead ends: 40317 [2020-10-12 11:18:32,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-12 11:18:32,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40317 states. [2020-10-12 11:18:33,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40317 to 39780. [2020-10-12 11:18:33,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39780 states. [2020-10-12 11:18:33,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39780 states to 39780 states and 61481 transitions. [2020-10-12 11:18:33,608 INFO L78 Accepts]: Start accepts. Automaton has 39780 states and 61481 transitions. Word has length 308 [2020-10-12 11:18:33,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:33,609 INFO L479 AbstractCegarLoop]: Abstraction has 39780 states and 61481 transitions. [2020-10-12 11:18:33,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:18:33,609 INFO L276 IsEmpty]: Start isEmpty. Operand 39780 states and 61481 transitions. [2020-10-12 11:18:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-12 11:18:33,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:33,680 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:33,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 11:18:33,681 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:33,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:33,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1491274513, now seen corresponding path program 1 times [2020-10-12 11:18:33,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:33,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95413787] [2020-10-12 11:18:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:33,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:34,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:35,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:38,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:38,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:38,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:38,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-12 11:18:38,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:18:38,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 11:18:38,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:18:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:18:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 322 [2020-10-12 11:18:38,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:38,997 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:38,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:39,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:39,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:39,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:39,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:18:39,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:39,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:39,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:39,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:18:39,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:39,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:39,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:39,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:39,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 11:18:39,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:39,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 11:18:39,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 11:18:39,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:39,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 11:18:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:39,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:39,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:39,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:18:39,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:39,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 11:18:39,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:39,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:39,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:39,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 11:18:39,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:39,500 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-12 11:18:39,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95413787] [2020-10-12 11:18:39,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:39,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:18:39,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131441696] [2020-10-12 11:18:39,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:18:39,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:39,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:18:39,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:18:39,502 INFO L87 Difference]: Start difference. First operand 39780 states and 61481 transitions. Second operand 6 states. [2020-10-12 11:18:39,636 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 11:18:42,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:42,461 INFO L93 Difference]: Finished difference Result 93907 states and 147638 transitions. [2020-10-12 11:18:42,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:18:42,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 316 [2020-10-12 11:18:42,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:42,722 INFO L225 Difference]: With dead ends: 93907 [2020-10-12 11:18:42,723 INFO L226 Difference]: Without dead ends: 54393 [2020-10-12 11:18:42,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:18:42,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54393 states. [2020-10-12 11:18:44,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54393 to 53822. [2020-10-12 11:18:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53822 states. [2020-10-12 11:18:44,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53822 states to 53822 states and 81141 transitions. [2020-10-12 11:18:44,484 INFO L78 Accepts]: Start accepts. Automaton has 53822 states and 81141 transitions. Word has length 316 [2020-10-12 11:18:44,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:44,486 INFO L479 AbstractCegarLoop]: Abstraction has 53822 states and 81141 transitions. [2020-10-12 11:18:44,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:18:44,486 INFO L276 IsEmpty]: Start isEmpty. Operand 53822 states and 81141 transitions. [2020-10-12 11:18:44,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-12 11:18:44,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:44,617 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:18:44,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 11:18:44,618 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:44,619 INFO L82 PathProgramCache]: Analyzing trace with hash 707482169, now seen corresponding path program 2 times [2020-10-12 11:18:44,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:44,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234522663] [2020-10-12 11:18:44,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:44,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:44,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:45,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:45,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:48,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:49,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:49,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-12 11:18:49,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:18:49,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 11:18:49,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:18:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 11:18:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 11:18:49,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:49,906 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:49,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:49,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:49,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:49,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:49,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:49,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:18:49,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:49,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:18:49,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:49,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:18:49,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:49,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:50,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:50,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:50,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:18:50,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:50,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 11:18:50,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:50,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:50,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:50,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 11:18:50,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:50,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:18:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:50,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:50,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:50,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:50,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:18:50,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:18:50,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 11:18:50,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:50,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:50,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:50,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:18:50,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:50,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 11:18:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:50,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:50,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:50,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:50,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:18:50,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:18:50,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:18:50,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:50,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:50,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:50,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:18:50,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:50,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-12 11:18:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:50,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:50,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:50,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:18:50,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:50,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:18:50,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:18:50,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:50,351 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 144 proven. 18 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 11:18:50,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234522663] [2020-10-12 11:18:50,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:50,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 11:18:50,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283734526] [2020-10-12 11:18:50,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:18:50,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:50,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:18:50,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:18:50,353 INFO L87 Difference]: Start difference. First operand 53822 states and 81141 transitions. Second operand 9 states. [2020-10-12 11:18:50,579 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:18:51,539 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:18:54,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:54,866 INFO L93 Difference]: Finished difference Result 102897 states and 152206 transitions. [2020-10-12 11:18:54,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:18:54,866 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 319 [2020-10-12 11:18:54,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:55,048 INFO L225 Difference]: With dead ends: 102897 [2020-10-12 11:18:55,048 INFO L226 Difference]: Without dead ends: 53175 [2020-10-12 11:18:55,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:18:55,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53175 states. [2020-10-12 11:18:56,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53175 to 52892. [2020-10-12 11:18:56,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52892 states. [2020-10-12 11:18:56,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52892 states to 52892 states and 70668 transitions. [2020-10-12 11:18:56,541 INFO L78 Accepts]: Start accepts. Automaton has 52892 states and 70668 transitions. Word has length 319 [2020-10-12 11:18:56,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:56,542 INFO L479 AbstractCegarLoop]: Abstraction has 52892 states and 70668 transitions. [2020-10-12 11:18:56,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:18:56,542 INFO L276 IsEmpty]: Start isEmpty. Operand 52892 states and 70668 transitions. [2020-10-12 11:18:56,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-12 11:18:56,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:56,618 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:56,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 11:18:56,622 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:56,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:56,622 INFO L82 PathProgramCache]: Analyzing trace with hash -905370469, now seen corresponding path program 1 times [2020-10-12 11:18:56,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:56,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874709407] [2020-10-12 11:18:56,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:56,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:56,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:57,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:59,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:01,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:01,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-12 11:19:01,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:19:01,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 11:19:01,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:01,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:19:01,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:01,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-12 11:19:01,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:01,895 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:19:01,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:01,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:01,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:01,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:01,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:01,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:19:01,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:01,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:01,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:01,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:01,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:01,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:02,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:02,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:02,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:19:02,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:02,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 11:19:02,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:19:02,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:02,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:19:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:02,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:02,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:02,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 11:19:02,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:02,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-12 11:19:02,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:02,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 11:19:02,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:02,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 11:19:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:02,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:02,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:02,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 11:19:02,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:02,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:19:02,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:02,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:19:02,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 11:19:02,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:19:02,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 154 proven. 47 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:19:02,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874709407] [2020-10-12 11:19:02,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:02,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:19:02,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835404003] [2020-10-12 11:19:02,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:19:02,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:02,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:19:02,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:19:02,476 INFO L87 Difference]: Start difference. First operand 52892 states and 70668 transitions. Second operand 8 states. [2020-10-12 11:19:02,625 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:19:06,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:06,513 INFO L93 Difference]: Finished difference Result 145307 states and 204352 transitions. [2020-10-12 11:19:06,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:19:06,514 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 331 [2020-10-12 11:19:06,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:06,902 INFO L225 Difference]: With dead ends: 145307 [2020-10-12 11:19:06,903 INFO L226 Difference]: Without dead ends: 96521 [2020-10-12 11:19:07,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:19:07,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96521 states. [2020-10-12 11:19:09,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96521 to 95249. [2020-10-12 11:19:09,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95249 states. [2020-10-12 11:19:09,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95249 states to 95249 states and 129012 transitions. [2020-10-12 11:19:09,318 INFO L78 Accepts]: Start accepts. Automaton has 95249 states and 129012 transitions. Word has length 331 [2020-10-12 11:19:09,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:19:09,318 INFO L479 AbstractCegarLoop]: Abstraction has 95249 states and 129012 transitions. [2020-10-12 11:19:09,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:19:09,319 INFO L276 IsEmpty]: Start isEmpty. Operand 95249 states and 129012 transitions. [2020-10-12 11:19:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-12 11:19:09,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:09,408 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:19:09,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 11:19:09,409 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:09,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1148418107, now seen corresponding path program 1 times [2020-10-12 11:19:09,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:09,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3001352] [2020-10-12 11:19:09,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:09,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:09,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:13,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:14,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:14,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-12 11:19:14,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:19:14,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 11:19:14,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:14,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:19:14,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:14,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 11:19:14,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:14,744 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:19:14,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:14,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:14,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:14,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:14,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:14,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 11:19:14,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:14,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:14,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:14,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:14,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:14,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:14,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:14,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:14,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:19:14,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:14,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 11:19:14,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:14,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:14,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:14,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:19:14,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:19:14,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:19:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:14,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:15,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:15,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:15,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 11:19:15,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:19:15,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 11:19:15,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:15,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:15,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:15,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 11:19:15,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:19:15,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 11:19:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:15,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:15,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:15,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 11:19:15,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:15,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-12 11:19:15,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:15,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:15,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:15,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 11:19:15,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:15,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-12 11:19:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:15,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:15,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:15,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 11:19:15,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:15,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:19:15,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:15,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:19:15,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 11:19:15,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:19:15,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 144 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-12 11:19:15,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3001352] [2020-10-12 11:19:15,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:15,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:19:15,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696080723] [2020-10-12 11:19:15,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:19:15,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:15,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:19:15,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:19:15,586 INFO L87 Difference]: Start difference. First operand 95249 states and 129012 transitions. Second operand 8 states. [2020-10-12 11:19:15,978 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:19:17,903 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:19:22,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:22,164 INFO L93 Difference]: Finished difference Result 312585 states and 456493 transitions. [2020-10-12 11:19:22,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 11:19:22,165 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 333 [2020-10-12 11:19:22,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:22,995 INFO L225 Difference]: With dead ends: 312585 [2020-10-12 11:19:22,995 INFO L226 Difference]: Without dead ends: 224631 [2020-10-12 11:19:23,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:19:23,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224631 states. [2020-10-12 11:19:30,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224631 to 220954. [2020-10-12 11:19:30,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220954 states. [2020-10-12 11:19:35,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220954 states to 220954 states and 304417 transitions. [2020-10-12 11:19:35,371 INFO L78 Accepts]: Start accepts. Automaton has 220954 states and 304417 transitions. Word has length 333 [2020-10-12 11:19:35,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:19:35,371 INFO L479 AbstractCegarLoop]: Abstraction has 220954 states and 304417 transitions. [2020-10-12 11:19:35,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:19:35,371 INFO L276 IsEmpty]: Start isEmpty. Operand 220954 states and 304417 transitions. [2020-10-12 11:19:35,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-12 11:19:35,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:35,597 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:19:35,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 11:19:35,597 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:35,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:35,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1961595695, now seen corresponding path program 1 times [2020-10-12 11:19:35,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:35,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440504839] [2020-10-12 11:19:35,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:35,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:35,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:36,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:37,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:37,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:40,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:40,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-12 11:19:40,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:19:40,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 11:19:40,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:40,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 11:19:40,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:40,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-12 11:19:40,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:40,955 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:19:40,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:40,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:40,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:40,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:40,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:40,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:19:40,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:41,104 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:19:41,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:41,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:41,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:41,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:19:41,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:41,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 11:19:41,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:19:41,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:41,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:19:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:41,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:41,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:41,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:19:41,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:41,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-12 11:19:41,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:41,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:19:41,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:41,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 11:19:41,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:19:41,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 11:19:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:41,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:41,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:41,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 11:19:41,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:41,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-12 11:19:41,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 11:19:41,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:42,572 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 238 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 11:19:42,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440504839] [2020-10-12 11:19:42,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:42,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 11:19:42,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734906587] [2020-10-12 11:19:42,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 11:19:42,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:42,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 11:19:42,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:19:42,575 INFO L87 Difference]: Start difference. First operand 220954 states and 304417 transitions. Second operand 11 states. [2020-10-12 11:19:42,730 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:19:43,793 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 135 [2020-10-12 11:19:44,770 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2020-10-12 11:19:45,506 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 11:19:52,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:52,763 INFO L93 Difference]: Finished difference Result 614867 states and 890729 transitions. [2020-10-12 11:19:52,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 11:19:52,763 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 344 [2020-10-12 11:19:52,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:54,351 INFO L225 Difference]: With dead ends: 614867 [2020-10-12 11:19:54,352 INFO L226 Difference]: Without dead ends: 405434 [2020-10-12 11:19:54,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=179, Invalid=471, Unknown=0, NotChecked=0, Total=650 [2020-10-12 11:19:55,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405434 states.