/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:13:52,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:13:52,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:13:52,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:13:52,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:13:52,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:13:52,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:13:52,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:13:52,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:13:52,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:13:52,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:13:52,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:13:52,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:13:52,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:13:52,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:13:52,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:13:52,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:13:52,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:13:52,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:13:52,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:13:52,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:13:52,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:13:52,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:13:52,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:13:52,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:13:52,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:13:52,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:13:52,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:13:52,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:13:52,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:13:52,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:13:52,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:13:52,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:13:52,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:13:52,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:13:52,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:13:52,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:13:52,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:13:52,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:13:52,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:13:52,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:13:52,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 06:13:52,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:13:52,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:13:52,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:13:52,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:13:52,238 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:13:52,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:13:52,239 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:13:52,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:13:52,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:13:52,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:13:52,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:13:52,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:13:52,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:13:52,240 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:13:52,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:13:52,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:13:52,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:13:52,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:13:52,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:13:52,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:13:52,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:13:52,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:13:52,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:13:52,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:13:52,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:13:52,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:13:52,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:13:52,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:13:52,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:13:52,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:13:52,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:13:52,608 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:13:52,612 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:13:52,614 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:13:52,614 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:13:52,615 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label00.c [2020-10-13 06:13:52,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f964d02f/87a7bddf8a8c4012bca681a6aec6a63b/FLAG259f3920a [2020-10-13 06:13:53,332 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:13:53,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label00.c [2020-10-13 06:13:53,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f964d02f/87a7bddf8a8c4012bca681a6aec6a63b/FLAG259f3920a [2020-10-13 06:13:53,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f964d02f/87a7bddf8a8c4012bca681a6aec6a63b [2020-10-13 06:13:53,468 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:13:53,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:13:53,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:13:53,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:13:53,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:13:53,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:13:53" (1/1) ... [2020-10-13 06:13:53,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb66ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:13:53, skipping insertion in model container [2020-10-13 06:13:53,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:13:53" (1/1) ... [2020-10-13 06:13:53,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:13:53,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:13:54,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:13:54,444 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:13:54,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:13:54,852 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:13:54,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:13:54 WrapperNode [2020-10-13 06:13:54,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:13:54,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:13:54,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:13:54,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:13:54,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:13:54" (1/1) ... [2020-10-13 06:13:54,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:13:54" (1/1) ... [2020-10-13 06:13:54,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:13:54" (1/1) ... [2020-10-13 06:13:54,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:13:54" (1/1) ... [2020-10-13 06:13:54,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:13:54" (1/1) ... [2020-10-13 06:13:55,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:13:54" (1/1) ... [2020-10-13 06:13:55,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:13:54" (1/1) ... [2020-10-13 06:13:55,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:13:55,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:13:55,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:13:55,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:13:55,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:13:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:13:55,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:13:55,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:13:55,107 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:13:55,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:13:55,107 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:13:55,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:13:55,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:13:55,108 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:13:55,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:13:55,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:13:55,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:13:56,970 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:13:56,970 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:13:56,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:13:56 BoogieIcfgContainer [2020-10-13 06:13:56,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:13:56,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:13:56,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:13:56,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:13:56,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:13:53" (1/3) ... [2020-10-13 06:13:56,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b93fae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:13:56, skipping insertion in model container [2020-10-13 06:13:56,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:13:54" (2/3) ... [2020-10-13 06:13:56,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b93fae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:13:56, skipping insertion in model container [2020-10-13 06:13:56,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:13:56" (3/3) ... [2020-10-13 06:13:56,986 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label00.c [2020-10-13 06:13:56,997 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:13:57,006 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:13:57,023 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:13:57,053 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:13:57,053 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:13:57,053 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:13:57,053 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:13:57,054 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:13:57,054 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:13:57,054 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:13:57,054 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:13:57,082 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:13:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-13 06:13:57,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:13:57,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:13:57,103 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:13:57,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:13:57,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1862638405, now seen corresponding path program 1 times [2020-10-13 06:13:57,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:13:57,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968336953] [2020-10-13 06:13:57,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:13:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:13:57,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:13:58,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:02,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:14:02,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-13 06:14:02,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:14:02,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4418 [2020-10-13 06:14:02,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:14:02,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:14:02,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:14:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:14:02,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:14:02,757 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-13 06:14:03,654 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:14:03,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:14:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:14:03,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:03,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:14:03,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:14:03,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:14:03,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:14:03,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:14:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:14:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:14:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:14:03,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:14:04,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:14:04,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968336953] [2020-10-13 06:14:04,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:14:04,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 06:14:04,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461130467] [2020-10-13 06:14:04,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:14:04,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:14:04,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:14:04,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:14:04,459 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 13 states. [2020-10-13 06:14:04,959 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 06:14:05,829 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 180 [2020-10-13 06:14:06,639 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 180 [2020-10-13 06:14:07,560 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 190 [2020-10-13 06:14:08,836 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 239 DAG size of output: 189 [2020-10-13 06:14:10,247 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 239 DAG size of output: 188 [2020-10-13 06:14:11,925 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 239 DAG size of output: 187 [2020-10-13 06:14:15,079 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 240 DAG size of output: 186 [2020-10-13 06:14:16,099 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 184 [2020-10-13 06:14:18,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:14:18,654 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:14:18,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:14:18,657 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 198 [2020-10-13 06:14:18,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:14:18,674 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:14:18,674 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:14:18,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-10-13 06:14:18,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:14:18,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:14:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:14:18,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:14:18,751 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 198 [2020-10-13 06:14:18,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:14:18,752 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:14:18,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:14:18,753 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:14:18,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-13 06:14:18,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:14:18,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:14:18,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:14:18,759 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:14:18,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:14:18,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1091301566, now seen corresponding path program 1 times [2020-10-13 06:14:18,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:14:18,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118150139] [2020-10-13 06:14:18,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:14:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:14:18,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:19,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:21,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:23,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:14:23,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-13 06:14:23,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:14:23,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-13 06:14:23,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:14:23,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 06:14:23,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:14:23,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:14:23,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 06:14:25,785 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 73 [2020-10-13 06:14:26,114 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 87 [2020-10-13 06:14:26,471 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 87 [2020-10-13 06:14:26,787 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2020-10-13 06:14:27,037 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2020-10-13 06:14:27,254 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2020-10-13 06:14:27,415 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:14:27,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:14:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:14:27,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:27,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:14:27,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:14:27,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:14:27,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:14:27,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:14:27,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:14:27,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:14:27,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:14:27,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:14:27,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:14:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:14:27,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:27,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:14:27,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:14:27,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:14:27,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 06:14:27,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:14:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:14:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:14:27,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:14:27,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:14:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:14:28,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118150139] [2020-10-13 06:14:28,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:14:28,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 06:14:28,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625944487] [2020-10-13 06:14:28,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 06:14:28,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:14:28,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 06:14:28,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-13 06:14:28,481 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 17 states. [2020-10-13 06:14:28,771 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 06:14:29,386 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 96 [2020-10-13 06:14:29,678 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-13 06:14:30,047 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-13 06:14:30,636 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 176 [2020-10-13 06:14:31,343 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 196 [2020-10-13 06:14:32,260 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 193 [2020-10-13 06:14:34,104 WARN L193 SmtUtils]: Spent 950.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 190 [2020-10-13 06:14:36,561 WARN L193 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 187 [2020-10-13 06:14:39,387 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 184 [2020-10-13 06:14:40,234 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 179 [2020-10-13 06:14:42,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:14:42,271 INFO L93 Difference]: Finished difference Result 756 states and 1212 transitions. [2020-10-13 06:14:42,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 06:14:42,273 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 209 [2020-10-13 06:14:42,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:14:42,280 INFO L225 Difference]: With dead ends: 756 [2020-10-13 06:14:42,280 INFO L226 Difference]: Without dead ends: 513 [2020-10-13 06:14:42,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2020-10-13 06:14:42,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-10-13 06:14:42,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 509. [2020-10-13 06:14:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-13 06:14:42,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 677 transitions. [2020-10-13 06:14:42,320 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 677 transitions. Word has length 209 [2020-10-13 06:14:42,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:14:42,321 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 677 transitions. [2020-10-13 06:14:42,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 06:14:42,321 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 677 transitions. [2020-10-13 06:14:42,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-13 06:14:42,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:14:42,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:14:42,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:14:42,328 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:14:42,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:14:42,328 INFO L82 PathProgramCache]: Analyzing trace with hash 74854410, now seen corresponding path program 1 times [2020-10-13 06:14:42,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:14:42,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531300041] [2020-10-13 06:14:42,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:14:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:14:42,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:42,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:43,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:14:43,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 06:14:43,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:14:43,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1099 [2020-10-13 06:14:43,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:14:43,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:14:43,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:14:43,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 06:14:43,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:14:44,374 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:14:44,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:14:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:14:44,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:44,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:14:44,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:14:44,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:14:44,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:14:44,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:14:44,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:14:44,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:14:44,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:14:44,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:14:44,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:14:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:14:44,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:44,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:14:44,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:14:44,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:14:44,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 06:14:44,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:14:44,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:14:44,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:14:44,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:14:44,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:14:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:14:45,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531300041] [2020-10-13 06:14:45,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:14:45,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:14:45,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952482525] [2020-10-13 06:14:45,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:14:45,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:14:45,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:14:45,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:14:45,356 INFO L87 Difference]: Start difference. First operand 509 states and 677 transitions. Second operand 5 states. [2020-10-13 06:14:45,694 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-13 06:14:48,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:14:48,173 INFO L93 Difference]: Finished difference Result 932 states and 1397 transitions. [2020-10-13 06:14:48,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:14:48,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-13 06:14:48,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:14:48,178 INFO L225 Difference]: With dead ends: 932 [2020-10-13 06:14:48,178 INFO L226 Difference]: Without dead ends: 499 [2020-10-13 06:14:48,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:14:48,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-13 06:14:48,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 497. [2020-10-13 06:14:48,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-10-13 06:14:48,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 634 transitions. [2020-10-13 06:14:48,206 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 634 transitions. Word has length 219 [2020-10-13 06:14:48,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:14:48,207 INFO L479 AbstractCegarLoop]: Abstraction has 497 states and 634 transitions. [2020-10-13 06:14:48,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:14:48,207 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 634 transitions. [2020-10-13 06:14:48,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-13 06:14:48,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:14:48,211 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:14:48,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:14:48,212 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:14:48,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:14:48,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1694863166, now seen corresponding path program 1 times [2020-10-13 06:14:48,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:14:48,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965288056] [2020-10-13 06:14:48,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:14:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:14:48,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:48,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:50,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:52,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:14:52,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 06:14:52,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:14:52,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3839 [2020-10-13 06:14:52,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:14:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:14:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:14:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:14:52,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:14:52,315 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:14:52,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:14:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:14:52,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:52,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:14:52,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:14:52,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:14:52,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:14:52,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:14:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:14:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:14:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:14:52,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:14:52,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:14:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:14:52,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:52,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:14:52,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:14:52,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:14:52,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 06:14:52,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:14:52,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:14:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:14:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:14:52,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:14:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:14:52,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965288056] [2020-10-13 06:14:52,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:14:52,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:14:52,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024355261] [2020-10-13 06:14:52,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:14:52,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:14:52,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:14:52,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:14:52,664 INFO L87 Difference]: Start difference. First operand 497 states and 634 transitions. Second operand 7 states. [2020-10-13 06:14:52,819 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:14:53,300 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:14:55,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:14:55,813 INFO L93 Difference]: Finished difference Result 993 states and 1399 transitions. [2020-10-13 06:14:55,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:14:55,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-13 06:14:55,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:14:55,826 INFO L225 Difference]: With dead ends: 993 [2020-10-13 06:14:55,826 INFO L226 Difference]: Without dead ends: 750 [2020-10-13 06:14:55,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:14:55,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2020-10-13 06:14:55,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 724. [2020-10-13 06:14:55,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2020-10-13 06:14:55,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 914 transitions. [2020-10-13 06:14:55,878 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 914 transitions. Word has length 230 [2020-10-13 06:14:55,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:14:55,879 INFO L479 AbstractCegarLoop]: Abstraction has 724 states and 914 transitions. [2020-10-13 06:14:55,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:14:55,879 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 914 transitions. [2020-10-13 06:14:55,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-13 06:14:55,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:14:55,886 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:14:55,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:14:55,887 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:14:55,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:14:55,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1295006958, now seen corresponding path program 1 times [2020-10-13 06:14:55,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:14:55,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110053515] [2020-10-13 06:14:55,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:14:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:14:56,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:56,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:56,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:59,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:14:59,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-13 06:14:59,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:14:59,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3571 [2020-10-13 06:14:59,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:14:59,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:14:59,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:14:59,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-13 06:14:59,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:14:59,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:14:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:14:59,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:59,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:14:59,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:14:59,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:14:59,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:14:59,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:14:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:14:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:14:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:14:59,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:14:59,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:14:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:14:59,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:59,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:14:59,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:14:59,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:14:59,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:14:59,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:14:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:14:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:14:59,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:14:59,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:15:00,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110053515] [2020-10-13 06:15:00,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:00,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 06:15:00,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52120617] [2020-10-13 06:15:00,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 06:15:00,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:00,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 06:15:00,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:15:00,171 INFO L87 Difference]: Start difference. First operand 724 states and 914 transitions. Second operand 6 states. [2020-10-13 06:15:00,555 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 06:15:01,353 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 06:15:03,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:03,821 INFO L93 Difference]: Finished difference Result 1931 states and 2649 transitions. [2020-10-13 06:15:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:15:03,822 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 233 [2020-10-13 06:15:03,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:03,830 INFO L225 Difference]: With dead ends: 1931 [2020-10-13 06:15:03,830 INFO L226 Difference]: Without dead ends: 1281 [2020-10-13 06:15:03,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:15:03,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-10-13 06:15:03,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1086. [2020-10-13 06:15:03,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1086 states. [2020-10-13 06:15:03,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1300 transitions. [2020-10-13 06:15:03,874 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1300 transitions. Word has length 233 [2020-10-13 06:15:03,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:03,876 INFO L479 AbstractCegarLoop]: Abstraction has 1086 states and 1300 transitions. [2020-10-13 06:15:03,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 06:15:03,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1300 transitions. [2020-10-13 06:15:03,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-13 06:15:03,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:03,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-13 06:15:03,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:15:03,883 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:03,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:03,883 INFO L82 PathProgramCache]: Analyzing trace with hash -176896496, now seen corresponding path program 1 times [2020-10-13 06:15:03,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:03,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386545290] [2020-10-13 06:15:03,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:04,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:06,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:07,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:07,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-13 06:15:07,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:15:07,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3646 [2020-10-13 06:15:07,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:07,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:07,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:15:07,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:15:07,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:07,909 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:07,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:07,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:07,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:07,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:07,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:07,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:15:07,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:07,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:07,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:15:08,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:08,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:08,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:08,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:15:08,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:08,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 06:15:08,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:08,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:08,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:08,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:15:08,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:08,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:15:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:08,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:08,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:08,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:15:08,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:08,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-13 06:15:08,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:08,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:08,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:15:08,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:15:08,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:15:08,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386545290] [2020-10-13 06:15:08,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:08,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:15:08,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017838681] [2020-10-13 06:15:08,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:15:08,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:08,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:15:08,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:15:08,862 INFO L87 Difference]: Start difference. First operand 1086 states and 1300 transitions. Second operand 7 states. [2020-10-13 06:15:09,419 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:15:10,767 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:15:12,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:12,964 INFO L93 Difference]: Finished difference Result 2415 states and 3074 transitions. [2020-10-13 06:15:12,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:15:12,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-13 06:15:12,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:12,974 INFO L225 Difference]: With dead ends: 2415 [2020-10-13 06:15:12,974 INFO L226 Difference]: Without dead ends: 1583 [2020-10-13 06:15:12,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:15:12,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-10-13 06:15:13,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1557. [2020-10-13 06:15:13,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1557 states. [2020-10-13 06:15:13,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 1894 transitions. [2020-10-13 06:15:13,036 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 1894 transitions. Word has length 291 [2020-10-13 06:15:13,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:13,036 INFO L479 AbstractCegarLoop]: Abstraction has 1557 states and 1894 transitions. [2020-10-13 06:15:13,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:15:13,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 1894 transitions. [2020-10-13 06:15:13,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-13 06:15:13,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:13,046 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:15:13,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:15:13,046 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:13,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:13,047 INFO L82 PathProgramCache]: Analyzing trace with hash -681403949, now seen corresponding path program 1 times [2020-10-13 06:15:13,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:13,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847421428] [2020-10-13 06:15:13,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:13,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:13,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:17,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:17,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 06:15:17,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:15:17,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4450 [2020-10-13 06:15:17,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:17,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:17,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:15:17,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-13 06:15:17,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:17,865 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:17,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:17,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:17,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:17,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:17,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:17,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:15:17,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:17,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:17,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:17,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:17,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:17,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:18,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:18,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:18,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:15:18,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:18,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 06:15:18,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:18,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:15:18,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:15:18,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847421428] [2020-10-13 06:15:18,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:18,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:15:18,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388316652] [2020-10-13 06:15:18,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:15:18,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:18,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:15:18,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:15:18,219 INFO L87 Difference]: Start difference. First operand 1557 states and 1894 transitions. Second operand 5 states. [2020-10-13 06:15:18,737 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:15:20,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:20,570 INFO L93 Difference]: Finished difference Result 3298 states and 4200 transitions. [2020-10-13 06:15:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:15:20,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 298 [2020-10-13 06:15:20,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:20,581 INFO L225 Difference]: With dead ends: 3298 [2020-10-13 06:15:20,581 INFO L226 Difference]: Without dead ends: 1995 [2020-10-13 06:15:20,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:15:20,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2020-10-13 06:15:20,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1987. [2020-10-13 06:15:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1987 states. [2020-10-13 06:15:20,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2497 transitions. [2020-10-13 06:15:20,652 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2497 transitions. Word has length 298 [2020-10-13 06:15:20,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:20,653 INFO L479 AbstractCegarLoop]: Abstraction has 1987 states and 2497 transitions. [2020-10-13 06:15:20,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:15:20,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2497 transitions. [2020-10-13 06:15:20,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-13 06:15:20,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:20,659 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:15:20,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:15:20,660 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:20,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:20,661 INFO L82 PathProgramCache]: Analyzing trace with hash -2112298201, now seen corresponding path program 1 times [2020-10-13 06:15:20,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:20,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330245736] [2020-10-13 06:15:20,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:20,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:20,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:23,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:25,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:25,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-13 06:15:25,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:15:25,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4701 [2020-10-13 06:15:25,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:25,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:25,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:15:25,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-13 06:15:25,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:25,779 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:25,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:25,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:25,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:25,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:25,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:25,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:15:25,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:25,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:25,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:25,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:25,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:26,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:26,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:15:26,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:26,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-13 06:15:26,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:15:26,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 102 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:15:26,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330245736] [2020-10-13 06:15:26,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:26,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:15:26,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403407390] [2020-10-13 06:15:26,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:15:26,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:26,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:15:26,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:15:26,271 INFO L87 Difference]: Start difference. First operand 1987 states and 2497 transitions. Second operand 5 states. [2020-10-13 06:15:26,418 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:15:28,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:28,905 INFO L93 Difference]: Finished difference Result 5025 states and 6644 transitions. [2020-10-13 06:15:28,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:15:28,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2020-10-13 06:15:28,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:28,924 INFO L225 Difference]: With dead ends: 5025 [2020-10-13 06:15:28,925 INFO L226 Difference]: Without dead ends: 3292 [2020-10-13 06:15:28,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:15:28,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2020-10-13 06:15:29,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 3275. [2020-10-13 06:15:29,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3275 states. [2020-10-13 06:15:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 4218 transitions. [2020-10-13 06:15:29,041 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 4218 transitions. Word has length 304 [2020-10-13 06:15:29,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:29,042 INFO L479 AbstractCegarLoop]: Abstraction has 3275 states and 4218 transitions. [2020-10-13 06:15:29,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:15:29,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 4218 transitions. [2020-10-13 06:15:29,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-13 06:15:29,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:29,054 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:15:29,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:15:29,054 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:29,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:29,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1848842444, now seen corresponding path program 1 times [2020-10-13 06:15:29,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:29,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902145094] [2020-10-13 06:15:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:29,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:29,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:30,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:33,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:33,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-13 06:15:33,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:15:33,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4141 [2020-10-13 06:15:33,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:33,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:33,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:15:33,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:15:33,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:33,460 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:33,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:33,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:33,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:33,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:33,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:33,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:15:33,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:33,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:33,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:33,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:33,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:33,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:33,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:33,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:33,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:15:33,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:33,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 06:15:33,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:15:33,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:33,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:15:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:33,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:33,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:33,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 06:15:33,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:33,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:15:33,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:33,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:33,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:15:33,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:15:33,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:15:33,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902145094] [2020-10-13 06:15:33,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:33,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:15:33,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825323044] [2020-10-13 06:15:33,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:15:33,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:33,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:15:33,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:15:33,873 INFO L87 Difference]: Start difference. First operand 3275 states and 4218 transitions. Second operand 7 states. [2020-10-13 06:15:34,204 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:15:34,929 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:15:37,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:37,993 INFO L93 Difference]: Finished difference Result 7757 states and 10118 transitions. [2020-10-13 06:15:37,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:15:37,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-13 06:15:37,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:38,018 INFO L225 Difference]: With dead ends: 7757 [2020-10-13 06:15:38,018 INFO L226 Difference]: Without dead ends: 4736 [2020-10-13 06:15:38,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:15:38,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2020-10-13 06:15:38,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 4711. [2020-10-13 06:15:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4711 states. [2020-10-13 06:15:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4711 states to 4711 states and 5953 transitions. [2020-10-13 06:15:38,148 INFO L78 Accepts]: Start accepts. Automaton has 4711 states and 5953 transitions. Word has length 311 [2020-10-13 06:15:38,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:38,149 INFO L479 AbstractCegarLoop]: Abstraction has 4711 states and 5953 transitions. [2020-10-13 06:15:38,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:15:38,149 INFO L276 IsEmpty]: Start isEmpty. Operand 4711 states and 5953 transitions. [2020-10-13 06:15:38,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-13 06:15:38,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:38,164 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:15:38,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:15:38,164 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:38,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:38,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1523095643, now seen corresponding path program 1 times [2020-10-13 06:15:38,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:38,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549066780] [2020-10-13 06:15:38,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:38,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:38,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:39,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:39,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:41,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:41,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-13 06:15:41,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:15:41,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3695 [2020-10-13 06:15:41,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:15:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:15:41,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:42,112 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:42,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:42,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:42,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:42,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:42,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:42,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:15:42,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:42,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:42,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:42,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:42,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:15:42,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:42,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 06:15:42,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:15:42,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:42,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:15:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:42,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:42,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:42,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:15:42,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:42,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 06:15:42,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:15:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:15:42,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:42,561 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:15:42,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549066780] [2020-10-13 06:15:42,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:42,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:15:42,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938547983] [2020-10-13 06:15:42,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:15:42,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:42,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:15:42,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:15:42,563 INFO L87 Difference]: Start difference. First operand 4711 states and 5953 transitions. Second operand 7 states. [2020-10-13 06:15:43,235 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:15:43,679 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:15:46,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:46,029 INFO L93 Difference]: Finished difference Result 9459 states and 12851 transitions. [2020-10-13 06:15:46,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 06:15:46,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 312 [2020-10-13 06:15:46,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:46,066 INFO L225 Difference]: With dead ends: 9459 [2020-10-13 06:15:46,067 INFO L226 Difference]: Without dead ends: 6308 [2020-10-13 06:15:46,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:15:46,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6308 states. [2020-10-13 06:15:46,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6308 to 6126. [2020-10-13 06:15:46,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6126 states. [2020-10-13 06:15:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6126 states to 6126 states and 7843 transitions. [2020-10-13 06:15:46,294 INFO L78 Accepts]: Start accepts. Automaton has 6126 states and 7843 transitions. Word has length 312 [2020-10-13 06:15:46,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:46,295 INFO L479 AbstractCegarLoop]: Abstraction has 6126 states and 7843 transitions. [2020-10-13 06:15:46,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:15:46,295 INFO L276 IsEmpty]: Start isEmpty. Operand 6126 states and 7843 transitions. [2020-10-13 06:15:46,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-13 06:15:46,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:46,318 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:15:46,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:15:46,319 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:46,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:46,319 INFO L82 PathProgramCache]: Analyzing trace with hash 474611375, now seen corresponding path program 1 times [2020-10-13 06:15:46,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:46,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625411542] [2020-10-13 06:15:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:46,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:46,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:48,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:51,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:51,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-13 06:15:51,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:15:51,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4772 [2020-10-13 06:15:51,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:51,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:51,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:15:51,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:15:51,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:51,403 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:51,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:51,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:51,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:51,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:51,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:51,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:15:51,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:51,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:51,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:51,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:51,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:51,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:51,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:51,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:51,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:15:51,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 06:15:51,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:15:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:51,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:15:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:51,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:51,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:51,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:15:51,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:51,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 06:15:51,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:15:51,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:15:51,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:51,852 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:15:51,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625411542] [2020-10-13 06:15:51,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:51,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:15:51,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122727946] [2020-10-13 06:15:51,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:15:51,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:51,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:15:51,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:15:51,854 INFO L87 Difference]: Start difference. First operand 6126 states and 7843 transitions. Second operand 8 states. [2020-10-13 06:15:52,007 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:15:52,834 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:15:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:55,335 INFO L93 Difference]: Finished difference Result 14708 states and 19164 transitions. [2020-10-13 06:15:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:15:55,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 318 [2020-10-13 06:15:55,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:55,381 INFO L225 Difference]: With dead ends: 14708 [2020-10-13 06:15:55,382 INFO L226 Difference]: Without dead ends: 8836 [2020-10-13 06:15:55,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:15:55,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8836 states. [2020-10-13 06:15:55,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8836 to 8768. [2020-10-13 06:15:55,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8768 states. [2020-10-13 06:15:55,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8768 states to 8768 states and 10811 transitions. [2020-10-13 06:15:55,611 INFO L78 Accepts]: Start accepts. Automaton has 8768 states and 10811 transitions. Word has length 318 [2020-10-13 06:15:55,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:55,611 INFO L479 AbstractCegarLoop]: Abstraction has 8768 states and 10811 transitions. [2020-10-13 06:15:55,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:15:55,611 INFO L276 IsEmpty]: Start isEmpty. Operand 8768 states and 10811 transitions. [2020-10-13 06:15:55,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-13 06:15:55,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:55,640 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:15:55,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:15:55,641 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:55,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:55,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1994821973, now seen corresponding path program 1 times [2020-10-13 06:15:55,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:55,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134541875] [2020-10-13 06:15:55,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:55,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:55,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:56,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:00,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:00,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:00,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-13 06:16:00,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:16:00,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 06:16:00,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:00,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:00,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:16:00,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:16:00,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:01,114 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:01,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:01,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:01,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:01,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:01,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:01,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:16:01,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:01,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:16:01,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:01,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:01,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:01,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:16:01,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:01,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-13 06:16:01,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:01,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:01,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:01,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:16:01,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:01,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:16:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:01,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:01,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:01,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:16:01,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:01,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:16:01,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:01,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:01,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:01,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:16:01,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:01,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 06:16:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:01,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:01,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:01,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 06:16:01,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:01,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:16:01,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:01,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:01,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 06:16:01,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:01,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 121 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 06:16:01,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134541875] [2020-10-13 06:16:01,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:01,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:01,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837568623] [2020-10-13 06:16:01,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:01,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:01,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:01,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:01,688 INFO L87 Difference]: Start difference. First operand 8768 states and 10811 transitions. Second operand 7 states. [2020-10-13 06:16:02,173 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:16:02,693 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:16:04,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:04,924 INFO L93 Difference]: Finished difference Result 17217 states and 22496 transitions. [2020-10-13 06:16:04,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:16:04,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 321 [2020-10-13 06:16:04,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:04,983 INFO L225 Difference]: With dead ends: 17217 [2020-10-13 06:16:04,983 INFO L226 Difference]: Without dead ends: 11382 [2020-10-13 06:16:05,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:16:05,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11382 states. [2020-10-13 06:16:05,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11382 to 11007. [2020-10-13 06:16:05,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11007 states. [2020-10-13 06:16:05,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11007 states to 11007 states and 13490 transitions. [2020-10-13 06:16:05,398 INFO L78 Accepts]: Start accepts. Automaton has 11007 states and 13490 transitions. Word has length 321 [2020-10-13 06:16:05,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:05,398 INFO L479 AbstractCegarLoop]: Abstraction has 11007 states and 13490 transitions. [2020-10-13 06:16:05,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:05,399 INFO L276 IsEmpty]: Start isEmpty. Operand 11007 states and 13490 transitions. [2020-10-13 06:16:05,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-13 06:16:05,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:05,429 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:16:05,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:16:05,429 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:05,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:05,432 INFO L82 PathProgramCache]: Analyzing trace with hash -905238688, now seen corresponding path program 1 times [2020-10-13 06:16:05,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:05,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603218499] [2020-10-13 06:16:05,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:05,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:05,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:07,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:07,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:07,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:10,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:10,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-13 06:16:10,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:16:10,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 06:16:10,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:10,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:10,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:16:10,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 06:16:10,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:10,806 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:10,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:10,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:10,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:10,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:10,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:10,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:16:10,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:10,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:16:10,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:11,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:11,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:11,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:16:11,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:11,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-13 06:16:11,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:11,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:16:11,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:11,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:16:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:11,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:11,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:11,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:16:11,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:11,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 06:16:11,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:11,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:11,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:11,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:16:11,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:16:11,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603218499] [2020-10-13 06:16:11,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:11,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:11,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384841393] [2020-10-13 06:16:11,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:11,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:11,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:11,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:11,481 INFO L87 Difference]: Start difference. First operand 11007 states and 13490 transitions. Second operand 7 states. [2020-10-13 06:16:11,718 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:12,081 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:15,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:15,610 INFO L93 Difference]: Finished difference Result 29779 states and 37704 transitions. [2020-10-13 06:16:15,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:16:15,615 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 322 [2020-10-13 06:16:15,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:15,659 INFO L225 Difference]: With dead ends: 29779 [2020-10-13 06:16:15,659 INFO L226 Difference]: Without dead ends: 19026 [2020-10-13 06:16:15,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:16:15,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19026 states. [2020-10-13 06:16:16,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19026 to 18966. [2020-10-13 06:16:16,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18966 states. [2020-10-13 06:16:16,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18966 states to 18966 states and 23395 transitions. [2020-10-13 06:16:16,219 INFO L78 Accepts]: Start accepts. Automaton has 18966 states and 23395 transitions. Word has length 322 [2020-10-13 06:16:16,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:16,220 INFO L479 AbstractCegarLoop]: Abstraction has 18966 states and 23395 transitions. [2020-10-13 06:16:16,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:16,220 INFO L276 IsEmpty]: Start isEmpty. Operand 18966 states and 23395 transitions. [2020-10-13 06:16:16,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 06:16:16,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:16,279 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:16:16,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:16:16,280 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:16,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:16,280 INFO L82 PathProgramCache]: Analyzing trace with hash -53489832, now seen corresponding path program 1 times [2020-10-13 06:16:16,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:16,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624574654] [2020-10-13 06:16:16,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:16,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:17,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:17,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:19,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:19,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-13 06:16:19,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:16:19,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3547 [2020-10-13 06:16:19,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:19,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:19,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 06:16:19,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-13 06:16:19,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:20,185 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:20,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:20,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:20,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:20,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:20,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:20,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:16:20,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:20,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:20,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:20,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:20,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:20,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:20,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:20,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:20,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:16:20,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:20,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 06:16:20,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:20,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:20,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:16:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:20,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:20,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:20,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:16:20,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:20,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:16:20,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 06:16:20,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:20,517 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-13 06:16:20,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624574654] [2020-10-13 06:16:20,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:20,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:16:20,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161910849] [2020-10-13 06:16:20,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:16:20,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:20,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:16:20,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:16:20,519 INFO L87 Difference]: Start difference. First operand 18966 states and 23395 transitions. Second operand 5 states. [2020-10-13 06:16:20,824 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:23,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:23,300 INFO L93 Difference]: Finished difference Result 51624 states and 65122 transitions. [2020-10-13 06:16:23,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:16:23,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-13 06:16:23,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:23,405 INFO L225 Difference]: With dead ends: 51624 [2020-10-13 06:16:23,406 INFO L226 Difference]: Without dead ends: 32912 [2020-10-13 06:16:23,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:16:23,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32912 states. [2020-10-13 06:16:24,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32912 to 32807. [2020-10-13 06:16:24,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32807 states. [2020-10-13 06:16:24,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32807 states to 32807 states and 41290 transitions. [2020-10-13 06:16:24,127 INFO L78 Accepts]: Start accepts. Automaton has 32807 states and 41290 transitions. Word has length 326 [2020-10-13 06:16:24,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:24,128 INFO L479 AbstractCegarLoop]: Abstraction has 32807 states and 41290 transitions. [2020-10-13 06:16:24,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:16:24,128 INFO L276 IsEmpty]: Start isEmpty. Operand 32807 states and 41290 transitions. [2020-10-13 06:16:24,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-13 06:16:24,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:24,197 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:16:24,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:16:24,198 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:24,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:24,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1916419231, now seen corresponding path program 1 times [2020-10-13 06:16:24,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:24,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102090228] [2020-10-13 06:16:24,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:24,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:24,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:24,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:28,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:29,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:29,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-13 06:16:29,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:16:29,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 06:16:29,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:29,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:29,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 06:16:29,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:16:29,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:29,515 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:29,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:29,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:29,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:29,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:29,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:29,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:16:29,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:29,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:29,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:29,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:29,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:29,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:16:29,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:29,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 06:16:29,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:29,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:29,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:29,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:29,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:29,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:16:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:29,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:29,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:29,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:16:29,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:29,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:16:29,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 06:16:29,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:29,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 06:16:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:29,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:29,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:29,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:16:29,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:29,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:16:29,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:29,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:29,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:29,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:16:29,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-13 06:16:29,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102090228] [2020-10-13 06:16:29,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:29,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:29,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649945725] [2020-10-13 06:16:29,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:29,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:29,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:29,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:29,883 INFO L87 Difference]: Start difference. First operand 32807 states and 41290 transitions. Second operand 7 states. [2020-10-13 06:16:30,377 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:30,683 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:16:33,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:33,826 INFO L93 Difference]: Finished difference Result 72054 states and 90736 transitions. [2020-10-13 06:16:33,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:16:33,827 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 343 [2020-10-13 06:16:33,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:33,943 INFO L225 Difference]: With dead ends: 72054 [2020-10-13 06:16:33,944 INFO L226 Difference]: Without dead ends: 39243 [2020-10-13 06:16:34,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:16:34,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39243 states. [2020-10-13 06:16:35,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39243 to 39058. [2020-10-13 06:16:35,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39058 states. [2020-10-13 06:16:36,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39058 states to 39058 states and 47999 transitions. [2020-10-13 06:16:36,006 INFO L78 Accepts]: Start accepts. Automaton has 39058 states and 47999 transitions. Word has length 343 [2020-10-13 06:16:36,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:36,007 INFO L479 AbstractCegarLoop]: Abstraction has 39058 states and 47999 transitions. [2020-10-13 06:16:36,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:36,007 INFO L276 IsEmpty]: Start isEmpty. Operand 39058 states and 47999 transitions. [2020-10-13 06:16:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-13 06:16:36,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:36,069 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:16:36,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:16:36,070 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:36,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:36,070 INFO L82 PathProgramCache]: Analyzing trace with hash 169971699, now seen corresponding path program 1 times [2020-10-13 06:16:36,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:36,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688207816] [2020-10-13 06:16:36,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:36,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:36,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:36,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:37,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:39,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:40,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:41,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:41,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-13 06:16:41,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:16:41,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 06:16:41,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:41,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:41,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 06:16:41,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:16:41,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:41,396 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:41,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:41,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:41,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:41,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:41,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:41,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:16:41,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:41,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:41,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:41,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:41,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:41,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:41,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:41,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:41,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:16:41,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:16:41,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:41,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:41,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:16:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:41,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:41,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:41,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 06:16:41,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:41,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 06:16:41,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:41,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:41,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:41,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 06:16:41,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:41,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 06:16:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:41,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:41,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:41,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:16:41,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:41,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:16:41,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:41,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:41,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:41,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:16:41,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 06:16:41,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688207816] [2020-10-13 06:16:41,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:41,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:41,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262759450] [2020-10-13 06:16:41,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:41,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:41,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:41,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:41,858 INFO L87 Difference]: Start difference. First operand 39058 states and 47999 transitions. Second operand 7 states. [2020-10-13 06:16:42,003 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:16:42,981 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:16:45,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:45,109 INFO L93 Difference]: Finished difference Result 99856 states and 124057 transitions. [2020-10-13 06:16:45,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:16:45,110 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 362 [2020-10-13 06:16:45,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:45,295 INFO L225 Difference]: With dead ends: 99856 [2020-10-13 06:16:45,296 INFO L226 Difference]: Without dead ends: 61954 [2020-10-13 06:16:45,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:16:45,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61954 states. [2020-10-13 06:16:46,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61954 to 61171. [2020-10-13 06:16:46,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61171 states. [2020-10-13 06:16:46,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61171 states to 61171 states and 74403 transitions. [2020-10-13 06:16:46,329 INFO L78 Accepts]: Start accepts. Automaton has 61171 states and 74403 transitions. Word has length 362 [2020-10-13 06:16:46,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:46,330 INFO L479 AbstractCegarLoop]: Abstraction has 61171 states and 74403 transitions. [2020-10-13 06:16:46,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:46,330 INFO L276 IsEmpty]: Start isEmpty. Operand 61171 states and 74403 transitions. [2020-10-13 06:16:46,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-13 06:16:46,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:46,393 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:16:46,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:16:46,393 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:46,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:46,394 INFO L82 PathProgramCache]: Analyzing trace with hash 189038717, now seen corresponding path program 1 times [2020-10-13 06:16:46,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:46,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158749660] [2020-10-13 06:16:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:46,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:46,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:46,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:51,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:51,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-13 06:16:51,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:16:51,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-13 06:16:51,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:51,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:51,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:16:51,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:16:51,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:51,701 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:51,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:51,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:51,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:51,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:51,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:51,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:16:51,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:51,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:51,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:51,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:51,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:51,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:51,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:51,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:51,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:16:51,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:51,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 06:16:51,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:51,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:51,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:51,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:16:51,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:51,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:16:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:51,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:52,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:52,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:16:52,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:52,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 06:16:52,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:52,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:52,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:52,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:16:52,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:16:52,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-13 06:16:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:52,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:52,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:52,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 06:16:52,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:52,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 06:16:52,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:52,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:52,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-13 06:16:52,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:52,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:52,349 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 225 proven. 33 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-13 06:16:52,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158749660] [2020-10-13 06:16:52,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:52,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:52,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819839788] [2020-10-13 06:16:52,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:52,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:52,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:52,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:52,354 INFO L87 Difference]: Start difference. First operand 61171 states and 74403 transitions. Second operand 7 states. [2020-10-13 06:16:52,681 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:16:53,470 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:55,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:55,786 INFO L93 Difference]: Finished difference Result 119619 states and 149800 transitions. [2020-10-13 06:16:55,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:16:55,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 397 [2020-10-13 06:16:55,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:55,974 INFO L225 Difference]: With dead ends: 119619 [2020-10-13 06:16:55,974 INFO L226 Difference]: Without dead ends: 58915 [2020-10-13 06:16:56,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:16:56,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58915 states. [2020-10-13 06:16:56,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58915 to 56029. [2020-10-13 06:16:56,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56029 states. [2020-10-13 06:16:57,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56029 states to 56029 states and 65803 transitions. [2020-10-13 06:16:57,018 INFO L78 Accepts]: Start accepts. Automaton has 56029 states and 65803 transitions. Word has length 397 [2020-10-13 06:16:57,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:57,019 INFO L479 AbstractCegarLoop]: Abstraction has 56029 states and 65803 transitions. [2020-10-13 06:16:57,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:57,019 INFO L276 IsEmpty]: Start isEmpty. Operand 56029 states and 65803 transitions. [2020-10-13 06:16:57,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-10-13 06:16:57,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:57,092 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:16:57,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:16:57,092 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:57,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:57,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1393384148, now seen corresponding path program 1 times [2020-10-13 06:16:57,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:57,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050079526] [2020-10-13 06:16:57,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:57,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:57,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:57,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:58,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:02,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:02,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-10-13 06:17:02,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:17:02,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 06:17:02,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:17:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:17:02,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:02,400 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:02,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:02,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:02,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:02,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:02,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:02,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:17:02,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:02,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:02,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:02,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:02,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:02,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:17:02,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:02,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 06:17:02,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:02,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:02,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:02,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:17:02,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:02,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:17:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:02,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:02,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:02,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:17:02,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:02,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 06:17:02,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:02,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:02,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:02,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:17:02,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:02,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 06:17:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:02,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:02,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:02,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:17:02,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:02,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:17:02,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 06:17:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:02,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:02,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-13 06:17:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:02,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:02,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:02,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 06:17:02,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:02,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 06:17:02,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:02,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:02,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-13 06:17:02,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:02,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 226 proven. 30 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-13 06:17:02,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050079526] [2020-10-13 06:17:02,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:02,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:02,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310762368] [2020-10-13 06:17:02,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:02,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:02,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:02,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:02,943 INFO L87 Difference]: Start difference. First operand 56029 states and 65803 transitions. Second operand 7 states. [2020-10-13 06:17:03,085 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:17:04,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:04,730 INFO L93 Difference]: Finished difference Result 90551 states and 106703 transitions. [2020-10-13 06:17:04,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:17:04,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 414 [2020-10-13 06:17:04,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:05,130 INFO L225 Difference]: With dead ends: 90551 [2020-10-13 06:17:05,130 INFO L226 Difference]: Without dead ends: 46803 [2020-10-13 06:17:05,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:17:05,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46803 states. [2020-10-13 06:17:05,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46803 to 46759. [2020-10-13 06:17:05,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46759 states. [2020-10-13 06:17:05,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46759 states to 46759 states and 54061 transitions. [2020-10-13 06:17:05,906 INFO L78 Accepts]: Start accepts. Automaton has 46759 states and 54061 transitions. Word has length 414 [2020-10-13 06:17:05,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:05,906 INFO L479 AbstractCegarLoop]: Abstraction has 46759 states and 54061 transitions. [2020-10-13 06:17:05,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 46759 states and 54061 transitions. [2020-10-13 06:17:05,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-13 06:17:05,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:05,969 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:17:05,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 06:17:05,969 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:05,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:05,969 INFO L82 PathProgramCache]: Analyzing trace with hash -137481086, now seen corresponding path program 1 times [2020-10-13 06:17:05,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:05,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431409685] [2020-10-13 06:17:05,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:06,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:07,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:08,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:11,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:11,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-13 06:17:11,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:17:11,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 06:17:11,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:17:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:17:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-13 06:17:11,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:11,306 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:11,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:11,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:11,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:11,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:11,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:11,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:17:11,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:11,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:17:11,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:11,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:11,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:11,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:11,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:17:11,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:11,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-13 06:17:11,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:11,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:11,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:11,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 06:17:11,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:11,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:17:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:11,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:11,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:11,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:17:11,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:11,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 06:17:11,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:11,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:11,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:11,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:17:11,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:11,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:17:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:12,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:12,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:12,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 06:17:12,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:12,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 06:17:12,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:12,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:12,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-13 06:17:12,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:12,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 259 proven. 167 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:17:12,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431409685] [2020-10-13 06:17:12,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:12,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:17:12,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116174889] [2020-10-13 06:17:12,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:17:12,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:12,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:17:12,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:17:12,474 INFO L87 Difference]: Start difference. First operand 46759 states and 54061 transitions. Second operand 8 states. [2020-10-13 06:17:12,625 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:17:14,101 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:17:15,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:15,963 INFO L93 Difference]: Finished difference Result 104056 states and 121466 transitions. [2020-10-13 06:17:15,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:17:15,963 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 461 [2020-10-13 06:17:15,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:16,063 INFO L225 Difference]: With dead ends: 104056 [2020-10-13 06:17:16,063 INFO L226 Difference]: Without dead ends: 57764 [2020-10-13 06:17:16,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:17:16,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57764 states. [2020-10-13 06:17:16,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57764 to 56937. [2020-10-13 06:17:16,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56937 states. [2020-10-13 06:17:16,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56937 states to 56937 states and 66352 transitions. [2020-10-13 06:17:16,844 INFO L78 Accepts]: Start accepts. Automaton has 56937 states and 66352 transitions. Word has length 461 [2020-10-13 06:17:16,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:16,844 INFO L479 AbstractCegarLoop]: Abstraction has 56937 states and 66352 transitions. [2020-10-13 06:17:16,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:17:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand 56937 states and 66352 transitions. [2020-10-13 06:17:16,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-10-13 06:17:16,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:16,892 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:17:16,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 06:17:16,892 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:16,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:16,892 INFO L82 PathProgramCache]: Analyzing trace with hash -629116829, now seen corresponding path program 1 times [2020-10-13 06:17:16,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:16,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961583214] [2020-10-13 06:17:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:17,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:17,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:17,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:21,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:22,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:22,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-13 06:17:22,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:17:22,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 06:17:22,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-13 06:17:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:17:22,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:22,198 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:22,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:22,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:22,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:22,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:22,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:22,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:17:22,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:22,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:22,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:22,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:22,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:22,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:17:22,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:22,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:17:22,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:22,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:22,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:22,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:22,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:22,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:17:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:22,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:22,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:22,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 06:17:22,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:22,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 06:17:22,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:22,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:22,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:22,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:22,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:22,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-13 06:17:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:22,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:22,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:22,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 06:17:22,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:22,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 06:17:22,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 06:17:22,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:22,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 06:17:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:22,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking...