/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:26:52,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:26:52,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:26:52,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:26:52,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:26:52,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:26:52,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:26:52,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:26:52,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:26:52,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:26:52,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:26:52,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:26:52,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:26:52,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:26:52,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:26:52,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:26:52,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:26:52,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:26:52,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:26:52,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:26:52,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:26:52,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:26:52,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:26:52,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:26:52,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:26:52,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:26:52,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:26:52,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:26:52,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:26:52,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:26:52,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:26:52,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:26:52,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:26:52,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:26:52,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:26:52,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:26:52,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:26:52,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:26:52,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:26:52,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:26:52,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:26:52,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 11:26:52,894 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:26:52,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:26:52,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:26:52,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:26:52,896 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:26:52,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:26:52,896 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:26:52,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:26:52,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:26:52,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:26:52,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:26:52,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:26:52,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:26:52,897 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:26:52,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:26:52,898 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:26:52,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:26:52,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:26:52,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:26:52,899 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:26:52,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:26:52,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:26:52,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:26:52,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:26:52,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:26:52,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:26:52,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:26:52,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:26:52,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:26:52,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:26:53,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:26:53,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:26:53,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:26:53,202 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:26:53,202 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:26:53,203 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label48.c [2020-10-12 11:26:53,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49991d2b8/f67b2e0e23d942a39b175a129ec21422/FLAG53202bb20 [2020-10-12 11:26:53,899 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:26:53,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label48.c [2020-10-12 11:26:53,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49991d2b8/f67b2e0e23d942a39b175a129ec21422/FLAG53202bb20 [2020-10-12 11:26:54,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49991d2b8/f67b2e0e23d942a39b175a129ec21422 [2020-10-12 11:26:54,129 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:26:54,131 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:26:54,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:26:54,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:26:54,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:26:54,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:26:54" (1/1) ... [2020-10-12 11:26:54,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21715d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:54, skipping insertion in model container [2020-10-12 11:26:54,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:26:54" (1/1) ... [2020-10-12 11:26:54,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:26:54,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:26:54,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:26:54,904 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:26:55,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:26:55,229 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:26:55,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:55 WrapperNode [2020-10-12 11:26:55,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:26:55,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:26:55,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:26:55,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:26:55,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:55" (1/1) ... [2020-10-12 11:26:55,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:55" (1/1) ... [2020-10-12 11:26:55,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:55" (1/1) ... [2020-10-12 11:26:55,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:55" (1/1) ... [2020-10-12 11:26:55,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:55" (1/1) ... [2020-10-12 11:26:55,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:55" (1/1) ... [2020-10-12 11:26:55,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:55" (1/1) ... [2020-10-12 11:26:55,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:26:55,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:26:55,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:26:55,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:26:55,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:26:55,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:26:55,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:26:55,495 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:26:55,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:26:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:26:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:26:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:26:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:26:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:26:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:26:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:26:57,341 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:26:57,342 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:26:57,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:26:57 BoogieIcfgContainer [2020-10-12 11:26:57,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:26:57,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:26:57,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:26:57,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:26:57,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:26:54" (1/3) ... [2020-10-12 11:26:57,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab92cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:26:57, skipping insertion in model container [2020-10-12 11:26:57,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:55" (2/3) ... [2020-10-12 11:26:57,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab92cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:26:57, skipping insertion in model container [2020-10-12 11:26:57,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:26:57" (3/3) ... [2020-10-12 11:26:57,356 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label48.c [2020-10-12 11:26:57,366 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:26:57,374 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:26:57,388 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:26:57,414 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:26:57,414 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:26:57,414 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:26:57,415 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:26:57,415 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:26:57,415 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:26:57,415 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:26:57,416 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:26:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-12 11:26:57,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-12 11:26:57,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:26:57,457 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] [2020-10-12 11:26:57,458 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:26:57,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:26:57,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1739867384, now seen corresponding path program 1 times [2020-10-12 11:26:57,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:26:57,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399517281] [2020-10-12 11:26:57,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:26:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:58,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:58,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:02,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:02,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-12 11:27:02,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:27:02,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4503 [2020-10-12 11:27:02,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:27:02,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:27:02,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:27:02,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:27:03,798 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:03,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:03,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:03,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:03,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:03,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:03,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 11:27:03,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:03,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:27:03,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:27:04,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399517281] [2020-10-12 11:27:04,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:27:04,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 11:27:04,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499925535] [2020-10-12 11:27:04,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 11:27:04,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:04,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 11:27:04,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:27:04,751 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 13 states. [2020-10-12 11:27:05,253 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 11:27:06,032 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 166 [2020-10-12 11:27:06,794 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 166 [2020-10-12 11:27:07,611 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 174 [2020-10-12 11:27:08,423 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 173 [2020-10-12 11:27:09,849 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 205 DAG size of output: 172 [2020-10-12 11:27:11,326 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 205 DAG size of output: 171 [2020-10-12 11:27:14,292 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 206 DAG size of output: 170 [2020-10-12 11:27:15,240 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 168 [2020-10-12 11:27:17,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:17,635 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-12 11:27:17,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:27:17,637 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 189 [2020-10-12 11:27:17,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:17,655 INFO L225 Difference]: With dead ends: 737 [2020-10-12 11:27:17,655 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 11:27:17,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-12 11:27:17,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 11:27:17,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-12 11:27:17,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 11:27:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-12 11:27:17,734 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 189 [2020-10-12 11:27:17,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:17,735 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-12 11:27:17,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 11:27:17,736 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-12 11:27:17,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-12 11:27:17,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:17,741 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] [2020-10-12 11:27:17,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:27:17,742 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:17,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:17,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1585040545, now seen corresponding path program 1 times [2020-10-12 11:27:17,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:17,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892030366] [2020-10-12 11:27:17,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:17,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:18,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:19,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:22,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:22,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-12 11:27:22,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:27:22,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4975 [2020-10-12 11:27:22,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:27:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:27:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 11:27:22,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:24,014 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-12 11:27:24,355 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-12 11:27:24,636 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 75 [2020-10-12 11:27:24,962 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 75 [2020-10-12 11:27:25,460 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 93 [2020-10-12 11:27:25,996 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 96 [2020-10-12 11:27:26,436 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 85 [2020-10-12 11:27:26,841 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 75 [2020-10-12 11:27:27,166 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 60 [2020-10-12 11:27:27,336 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:27,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:27,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:27,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:27,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:27,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:27,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:27:27,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:27,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:27,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:27,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:27:27,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:27,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:27,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:27,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:27,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:27:27,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:27,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 11:27:27,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:27:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:27:27,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:27:27,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:27,784 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-12 11:27:28,102 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-12 11:27:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:27:28,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892030366] [2020-10-12 11:27:28,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:28,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 11:27:28,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741738140] [2020-10-12 11:27:28,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 11:27:28,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:28,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 11:27:28,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:27:28,740 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-12 11:27:29,020 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 11:27:29,856 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 74 [2020-10-12 11:27:30,295 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2020-10-12 11:27:30,789 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 75 [2020-10-12 11:27:31,850 WARN L193 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 175 [2020-10-12 11:27:32,932 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 222 DAG size of output: 183 [2020-10-12 11:27:34,570 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 236 DAG size of output: 181 [2020-10-12 11:27:35,092 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-10-12 11:27:37,459 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 239 DAG size of output: 180 [2020-10-12 11:27:41,017 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 240 DAG size of output: 179 [2020-10-12 11:27:45,251 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 241 DAG size of output: 178 [2020-10-12 11:27:46,579 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 241 DAG size of output: 176 [2020-10-12 11:27:50,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:50,599 INFO L93 Difference]: Finished difference Result 990 states and 1602 transitions. [2020-10-12 11:27:50,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:27:50,603 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 200 [2020-10-12 11:27:50,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:50,610 INFO L225 Difference]: With dead ends: 990 [2020-10-12 11:27:50,611 INFO L226 Difference]: Without dead ends: 747 [2020-10-12 11:27:50,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2020-10-12 11:27:50,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2020-10-12 11:27:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 733. [2020-10-12 11:27:50,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-10-12 11:27:50,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 998 transitions. [2020-10-12 11:27:50,677 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 998 transitions. Word has length 200 [2020-10-12 11:27:50,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:50,677 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 998 transitions. [2020-10-12 11:27:50,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 11:27:50,678 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 998 transitions. [2020-10-12 11:27:50,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-12 11:27:50,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:50,682 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] [2020-10-12 11:27:50,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:27:50,682 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:50,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:50,683 INFO L82 PathProgramCache]: Analyzing trace with hash -2066395501, now seen corresponding path program 1 times [2020-10-12 11:27:50,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:50,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313361876] [2020-10-12 11:27:50,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:50,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:51,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:51,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:51,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-12 11:27:51,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:27:51,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1184 [2020-10-12 11:27:51,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:51,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:27:51,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:27:51,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-12 11:27:51,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:52,337 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:52,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:52,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:52,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:52,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:52,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:52,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:27:52,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:52,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:27:52,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:52,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:27:52,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:27:52,503 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:27:52,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:52,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:52,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:52,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:27:52,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:52,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 11:27:52,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:52,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:27:52,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:27:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:27:53,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313361876] [2020-10-12 11:27:53,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:53,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:27:53,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10267845] [2020-10-12 11:27:53,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:27:53,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:53,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:27:53,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:27:53,023 INFO L87 Difference]: Start difference. First operand 733 states and 998 transitions. Second operand 5 states. [2020-10-12 11:27:53,587 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 11:27:56,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:56,821 INFO L93 Difference]: Finished difference Result 1164 states and 1728 transitions. [2020-10-12 11:27:56,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:27:56,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2020-10-12 11:27:56,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:56,827 INFO L225 Difference]: With dead ends: 1164 [2020-10-12 11:27:56,827 INFO L226 Difference]: Without dead ends: 725 [2020-10-12 11:27:56,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:27:56,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-10-12 11:27:56,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 721. [2020-10-12 11:27:56,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-10-12 11:27:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 939 transitions. [2020-10-12 11:27:56,872 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 939 transitions. Word has length 210 [2020-10-12 11:27:56,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:56,874 INFO L479 AbstractCegarLoop]: Abstraction has 721 states and 939 transitions. [2020-10-12 11:27:56,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:27:56,874 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 939 transitions. [2020-10-12 11:27:56,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-12 11:27:56,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:56,879 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] [2020-10-12 11:27:56,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:27:56,880 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:56,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:56,880 INFO L82 PathProgramCache]: Analyzing trace with hash 746746159, now seen corresponding path program 1 times [2020-10-12 11:27:56,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:56,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828677807] [2020-10-12 11:27:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:57,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:57,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:58,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:58,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-12 11:27:58,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:27:58,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1588 [2020-10-12 11:27:58,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:58,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 11:27:58,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:27:58,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-12 11:27:58,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:58,918 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:58,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:58,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:58,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:58,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:58,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:58,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:27:58,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:27:58,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:59,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:59,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:59,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:59,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 11:27:59,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:59,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 11:27:59,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:27:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:27:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 11:27:59,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:27:59,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828677807] [2020-10-12 11:27:59,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:59,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:27:59,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465351571] [2020-10-12 11:27:59,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:27:59,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:59,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:27:59,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:27:59,556 INFO L87 Difference]: Start difference. First operand 721 states and 939 transitions. Second operand 8 states. [2020-10-12 11:27:59,735 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:28:00,260 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 11:28:02,556 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 140 [2020-10-12 11:28:04,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:04,028 INFO L93 Difference]: Finished difference Result 1969 states and 2730 transitions. [2020-10-12 11:28:04,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:28:04,029 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 224 [2020-10-12 11:28:04,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:04,035 INFO L225 Difference]: With dead ends: 1969 [2020-10-12 11:28:04,036 INFO L226 Difference]: Without dead ends: 1177 [2020-10-12 11:28:04,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:28:04,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2020-10-12 11:28:04,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1168. [2020-10-12 11:28:04,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1168 states. [2020-10-12 11:28:04,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1528 transitions. [2020-10-12 11:28:04,073 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1528 transitions. Word has length 224 [2020-10-12 11:28:04,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:04,073 INFO L479 AbstractCegarLoop]: Abstraction has 1168 states and 1528 transitions. [2020-10-12 11:28:04,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:28:04,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1528 transitions. [2020-10-12 11:28:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-12 11:28:04,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:04,079 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:28:04,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:28:04,079 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:04,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:04,080 INFO L82 PathProgramCache]: Analyzing trace with hash 215976631, now seen corresponding path program 1 times [2020-10-12 11:28:04,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:04,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513131580] [2020-10-12 11:28:04,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:04,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:04,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:05,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:05,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:06,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:09,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:09,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-12 11:28:09,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:28:09,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 11:28:09,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:28:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 11:28:09,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:09,316 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:09,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:09,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:09,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:09,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:09,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:09,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:28:09,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:09,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:09,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:09,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:09,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:09,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:09,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:09,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:09,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:28:09,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:09,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-12 11:28:09,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:09,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:09,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:09,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:28:09,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:28:09,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:28:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:09,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:09,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:09,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 11:28:09,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:09,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 11:28:09,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 11:28:09,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 43 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:28:09,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513131580] [2020-10-12 11:28:09,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:09,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:28:09,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829869330] [2020-10-12 11:28:09,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:28:09,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:09,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:28:09,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:28:09,751 INFO L87 Difference]: Start difference. First operand 1168 states and 1528 transitions. Second operand 8 states. [2020-10-12 11:28:09,894 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 11:28:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:13,287 INFO L93 Difference]: Finished difference Result 3328 states and 4486 transitions. [2020-10-12 11:28:13,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:28:13,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 237 [2020-10-12 11:28:13,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:13,303 INFO L225 Difference]: With dead ends: 3328 [2020-10-12 11:28:13,304 INFO L226 Difference]: Without dead ends: 2269 [2020-10-12 11:28:13,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:28:13,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2020-10-12 11:28:13,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2119. [2020-10-12 11:28:13,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2119 states. [2020-10-12 11:28:13,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 2857 transitions. [2020-10-12 11:28:13,398 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 2857 transitions. Word has length 237 [2020-10-12 11:28:13,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:13,399 INFO L479 AbstractCegarLoop]: Abstraction has 2119 states and 2857 transitions. [2020-10-12 11:28:13,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:28:13,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 2857 transitions. [2020-10-12 11:28:13,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-12 11:28:13,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:13,410 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:28:13,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:28:13,410 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:13,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:13,411 INFO L82 PathProgramCache]: Analyzing trace with hash 33339385, now seen corresponding path program 1 times [2020-10-12 11:28:13,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:13,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489957888] [2020-10-12 11:28:13,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:13,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:13,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:14,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:15,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:16,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:17,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:17,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:18,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:18,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-12 11:28:18,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 11:28:18,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 11:28:18,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:28:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:18,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 11:28:18,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:18,741 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:18,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:18,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:18,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:18,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:18,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:18,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:28:18,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:18,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:18,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:18,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:18,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:28:18,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:18,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:18,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:28:18,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:18,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 11:28:18,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:28:18,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:18,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:28:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:18,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:19,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:19,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:28:19,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 11:28:19,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:28:19,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:19,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 11:28:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:19,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:19,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:19,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 11:28:19,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:19,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 11:28:19,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:19,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:19,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:19,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 11:28:19,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 59 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 11:28:19,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489957888] [2020-10-12 11:28:19,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:19,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:28:19,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355710535] [2020-10-12 11:28:19,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:28:19,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:19,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:28:19,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:28:19,212 INFO L87 Difference]: Start difference. First operand 2119 states and 2857 transitions. Second operand 8 states. [2020-10-12 11:28:19,360 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:28:19,736 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:28:22,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:22,291 INFO L93 Difference]: Finished difference Result 5683 states and 7992 transitions. [2020-10-12 11:28:22,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:28:22,292 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 245 [2020-10-12 11:28:22,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:22,312 INFO L225 Difference]: With dead ends: 5683 [2020-10-12 11:28:22,312 INFO L226 Difference]: Without dead ends: 3673 [2020-10-12 11:28:22,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:28:22,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2020-10-12 11:28:22,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 3480. [2020-10-12 11:28:22,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3480 states. [2020-10-12 11:28:22,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3480 states to 3480 states and 4665 transitions. [2020-10-12 11:28:22,436 INFO L78 Accepts]: Start accepts. Automaton has 3480 states and 4665 transitions. Word has length 245 [2020-10-12 11:28:22,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:22,437 INFO L479 AbstractCegarLoop]: Abstraction has 3480 states and 4665 transitions. [2020-10-12 11:28:22,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:28:22,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3480 states and 4665 transitions. [2020-10-12 11:28:22,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-12 11:28:22,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:22,449 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:28:22,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:28:22,450 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:22,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:22,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1758404308, now seen corresponding path program 1 times [2020-10-12 11:28:22,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:22,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717211461] [2020-10-12 11:28:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:22,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:22,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:25,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:25,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-12 11:28:25,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:28:25,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3273 [2020-10-12 11:28:25,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:25,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:28:25,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:25,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:28:25,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:25,994 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:25,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:26,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:26,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:26,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:26,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:26,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:28:26,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:26,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:26,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:26,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:26,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:28:26,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:26,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:26,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:26,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:28:26,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:26,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 11:28:26,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:28:26,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:26,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:28:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:26,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:26,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:26,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:28:26,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:26,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:28:26,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:26,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:28:26,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 11:28:26,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:28:26,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 49 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:28:26,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717211461] [2020-10-12 11:28:26,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:26,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:28:26,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785038943] [2020-10-12 11:28:26,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:28:26,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:26,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:28:26,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:28:26,316 INFO L87 Difference]: Start difference. First operand 3480 states and 4665 transitions. Second operand 7 states. [2020-10-12 11:28:26,482 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:28:27,056 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:28:29,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:29,560 INFO L93 Difference]: Finished difference Result 9175 states and 12756 transitions. [2020-10-12 11:28:29,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:28:29,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-10-12 11:28:29,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:29,590 INFO L225 Difference]: With dead ends: 9175 [2020-10-12 11:28:29,590 INFO L226 Difference]: Without dead ends: 5804 [2020-10-12 11:28:29,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:28:29,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5804 states. [2020-10-12 11:28:29,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5804 to 5431. [2020-10-12 11:28:29,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5431 states. [2020-10-12 11:28:29,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5431 states to 5431 states and 6858 transitions. [2020-10-12 11:28:29,781 INFO L78 Accepts]: Start accepts. Automaton has 5431 states and 6858 transitions. Word has length 244 [2020-10-12 11:28:29,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:29,782 INFO L479 AbstractCegarLoop]: Abstraction has 5431 states and 6858 transitions. [2020-10-12 11:28:29,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:28:29,782 INFO L276 IsEmpty]: Start isEmpty. Operand 5431 states and 6858 transitions. [2020-10-12 11:28:29,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-12 11:28:29,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:29,797 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] [2020-10-12 11:28:29,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:28:29,797 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:29,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:29,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1646653782, now seen corresponding path program 1 times [2020-10-12 11:28:29,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:29,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074944665] [2020-10-12 11:28:29,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:29,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:30,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:33,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:33,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-12 11:28:33,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:28:33,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3290 [2020-10-12 11:28:33,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:28:33,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:33,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 243 [2020-10-12 11:28:33,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:33,716 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2020-10-12 11:28:33,894 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2020-10-12 11:28:34,184 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-12 11:28:34,364 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-10-12 11:28:34,521 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-10-12 11:28:34,721 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-12 11:28:34,856 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-10-12 11:28:35,130 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:35,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:35,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:35,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:35,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:35,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:35,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:28:35,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:35,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:35,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:35,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:35,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:35,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:35,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:35,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:35,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:28:35,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:35,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 11:28:35,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:28:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:28:35,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:35,807 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2020-10-12 11:28:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:28:36,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074944665] [2020-10-12 11:28:36,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:36,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 11:28:36,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334224712] [2020-10-12 11:28:36,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 11:28:36,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:36,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 11:28:36,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:28:36,626 INFO L87 Difference]: Start difference. First operand 5431 states and 6858 transitions. Second operand 16 states. [2020-10-12 11:28:36,944 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 11:28:38,822 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 81 [2020-10-12 11:28:39,192 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2020-10-12 11:28:39,624 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 84 [2020-10-12 11:28:40,492 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 172 [2020-10-12 11:28:41,459 WARN L193 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 184 [2020-10-12 11:28:42,867 WARN L193 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 181 [2020-10-12 11:28:44,747 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 220 DAG size of output: 180 [2020-10-12 11:28:46,587 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 220 DAG size of output: 179 [2020-10-12 11:28:49,430 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 221 DAG size of output: 178 [2020-10-12 11:28:49,807 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-12 11:28:51,388 WARN L193 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 176 [2020-10-12 11:28:55,316 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2020-10-12 11:28:55,583 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-10-12 11:28:55,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:55,646 INFO L93 Difference]: Finished difference Result 9691 states and 12925 transitions. [2020-10-12 11:28:55,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 11:28:55,647 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 289 [2020-10-12 11:28:55,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:55,677 INFO L225 Difference]: With dead ends: 9691 [2020-10-12 11:28:55,678 INFO L226 Difference]: Without dead ends: 6721 [2020-10-12 11:28:55,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=237, Invalid=693, Unknown=0, NotChecked=0, Total=930 [2020-10-12 11:28:55,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2020-10-12 11:28:55,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 6449. [2020-10-12 11:28:55,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6449 states. [2020-10-12 11:28:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6449 states to 6449 states and 8292 transitions. [2020-10-12 11:28:55,838 INFO L78 Accepts]: Start accepts. Automaton has 6449 states and 8292 transitions. Word has length 289 [2020-10-12 11:28:55,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:55,839 INFO L479 AbstractCegarLoop]: Abstraction has 6449 states and 8292 transitions. [2020-10-12 11:28:55,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 11:28:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 6449 states and 8292 transitions. [2020-10-12 11:28:55,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-12 11:28:55,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:55,859 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:28:55,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:28:55,859 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:55,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:55,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1345213651, now seen corresponding path program 1 times [2020-10-12 11:28:55,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:55,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273504673] [2020-10-12 11:28:55,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:56,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:56,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:57,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:59,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:59,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-12 11:28:59,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:28:59,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3863 [2020-10-12 11:28:59,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:59,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:28:59,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:59,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-12 11:28:59,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:00,021 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:00,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:00,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:00,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:00,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:00,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:00,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:29:00,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:00,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:00,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:29:00,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:00,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:00,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:00,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:00,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:00,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 11:29:00,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:29:00,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-12 11:29:00,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:00,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:00,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:00,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 11:29:00,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:00,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 11:29:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:00,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:00,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:00,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:29:00,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:00,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 11:29:00,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:29:00,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 11:29:00,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273504673] [2020-10-12 11:29:00,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:29:00,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 11:29:00,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208630261] [2020-10-12 11:29:00,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:29:00,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:00,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:29:00,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:29:00,653 INFO L87 Difference]: Start difference. First operand 6449 states and 8292 transitions. Second operand 8 states. [2020-10-12 11:29:00,816 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:29:01,669 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:29:01,959 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:29:05,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:05,231 INFO L93 Difference]: Finished difference Result 23439 states and 31577 transitions. [2020-10-12 11:29:05,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:29:05,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 312 [2020-10-12 11:29:05,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:05,331 INFO L225 Difference]: With dead ends: 23439 [2020-10-12 11:29:05,331 INFO L226 Difference]: Without dead ends: 17521 [2020-10-12 11:29:05,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:29:05,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17521 states. [2020-10-12 11:29:05,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17521 to 17392. [2020-10-12 11:29:05,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17392 states. [2020-10-12 11:29:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17392 states to 17392 states and 22361 transitions. [2020-10-12 11:29:05,770 INFO L78 Accepts]: Start accepts. Automaton has 17392 states and 22361 transitions. Word has length 312 [2020-10-12 11:29:05,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:05,770 INFO L479 AbstractCegarLoop]: Abstraction has 17392 states and 22361 transitions. [2020-10-12 11:29:05,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:29:05,771 INFO L276 IsEmpty]: Start isEmpty. Operand 17392 states and 22361 transitions. [2020-10-12 11:29:05,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-12 11:29:05,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:05,812 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] [2020-10-12 11:29:05,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:29:05,812 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:05,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:05,813 INFO L82 PathProgramCache]: Analyzing trace with hash 199401349, now seen corresponding path program 1 times [2020-10-12 11:29:05,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:05,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849341819] [2020-10-12 11:29:05,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:05,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:07,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:07,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:08,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:08,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-12 11:29:08,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:29:08,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2731 [2020-10-12 11:29:08,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:08,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 11:29:08,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:29:08,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 316 [2020-10-12 11:29:08,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:08,924 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:08,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:08,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:08,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:08,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:08,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:08,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:29:08,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:08,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:08,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:08,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:29:08,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:09,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:09,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:09,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:09,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:29:09,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:09,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-12 11:29:09,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:29:09,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:09,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:29:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:09,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:09,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:09,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 11:29:09,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:09,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 11:29:09,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:09,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:29:09,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:09,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 11:29:09,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 146 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:29:09,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849341819] [2020-10-12 11:29:09,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:09,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:29:09,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020256597] [2020-10-12 11:29:09,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:29:09,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:09,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:29:09,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:29:09,941 INFO L87 Difference]: Start difference. First operand 17392 states and 22361 transitions. Second operand 9 states. [2020-10-12 11:29:10,118 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:29:11,040 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 11:29:11,999 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 11:29:16,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:16,158 INFO L93 Difference]: Finished difference Result 47101 states and 66242 transitions. [2020-10-12 11:29:16,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 11:29:16,160 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 317 [2020-10-12 11:29:16,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:16,271 INFO L225 Difference]: With dead ends: 47101 [2020-10-12 11:29:16,271 INFO L226 Difference]: Without dead ends: 30014 [2020-10-12 11:29:16,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:29:16,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30014 states. [2020-10-12 11:29:17,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30014 to 29606. [2020-10-12 11:29:17,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29606 states. [2020-10-12 11:29:17,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29606 states to 29606 states and 38736 transitions. [2020-10-12 11:29:17,062 INFO L78 Accepts]: Start accepts. Automaton has 29606 states and 38736 transitions. Word has length 317 [2020-10-12 11:29:17,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:17,062 INFO L479 AbstractCegarLoop]: Abstraction has 29606 states and 38736 transitions. [2020-10-12 11:29:17,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:29:17,063 INFO L276 IsEmpty]: Start isEmpty. Operand 29606 states and 38736 transitions. [2020-10-12 11:29:17,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-12 11:29:17,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:17,132 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:29:17,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:29:17,133 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:17,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:17,133 INFO L82 PathProgramCache]: Analyzing trace with hash -754204015, now seen corresponding path program 1 times [2020-10-12 11:29:17,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:17,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165737894] [2020-10-12 11:29:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:17,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:17,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:18,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:20,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:20,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:20,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-12 11:29:20,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:29:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3746 [2020-10-12 11:29:20,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 11:29:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:29:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 329 [2020-10-12 11:29:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:21,238 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:21,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:21,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:21,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:21,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:21,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:21,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:29:21,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:21,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:21,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:29:21,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:21,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:21,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:21,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:21,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 11:29:21,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:21,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 11:29:21,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:21,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:21,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:21,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 11:29:21,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:21,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 11:29:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:21,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:21,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:21,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 11:29:21,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:21,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 11:29:21,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:21,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:29:21,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:21,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 11:29:21,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 28 proven. 138 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:29:21,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165737894] [2020-10-12 11:29:21,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:21,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:29:21,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031086055] [2020-10-12 11:29:22,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:29:22,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:22,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:29:22,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:29:22,000 INFO L87 Difference]: Start difference. First operand 29606 states and 38736 transitions. Second operand 9 states. [2020-10-12 11:29:22,189 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:29:23,240 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 11:29:27,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:27,058 INFO L93 Difference]: Finished difference Result 68906 states and 95165 transitions. [2020-10-12 11:29:27,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:29:27,062 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 330 [2020-10-12 11:29:27,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:27,205 INFO L225 Difference]: With dead ends: 68906 [2020-10-12 11:29:27,206 INFO L226 Difference]: Without dead ends: 46571 [2020-10-12 11:29:27,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-10-12 11:29:27,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46571 states. [2020-10-12 11:29:28,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46571 to 46119. [2020-10-12 11:29:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46119 states. [2020-10-12 11:29:28,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46119 states to 46119 states and 60649 transitions. [2020-10-12 11:29:28,192 INFO L78 Accepts]: Start accepts. Automaton has 46119 states and 60649 transitions. Word has length 330 [2020-10-12 11:29:28,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:28,193 INFO L479 AbstractCegarLoop]: Abstraction has 46119 states and 60649 transitions. [2020-10-12 11:29:28,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:29:28,193 INFO L276 IsEmpty]: Start isEmpty. Operand 46119 states and 60649 transitions. [2020-10-12 11:29:28,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-12 11:29:28,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:28,261 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:29:28,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 11:29:28,261 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:28,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:28,262 INFO L82 PathProgramCache]: Analyzing trace with hash -292727572, now seen corresponding path program 1 times [2020-10-12 11:29:28,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:28,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815184423] [2020-10-12 11:29:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:28,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:28,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:29,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:30,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:31,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:31,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-12 11:29:31,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:29:31,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3146 [2020-10-12 11:29:31,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:31,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 11:29:31,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:29:31,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 348 [2020-10-12 11:29:31,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:31,943 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:31,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:31,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:31,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:31,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:31,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:31,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:29:31,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:31,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:31,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:31,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:29:31,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:32,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:32,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:32,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:32,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:29:32,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:32,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 11:29:32,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:29:32,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:32,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:29:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:32,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:32,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:32,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 11:29:32,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:32,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-12 11:29:32,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:32,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:29:32,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:32,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 11:29:32,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 53 proven. 157 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:29:33,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815184423] [2020-10-12 11:29:33,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:33,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:29:33,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440884173] [2020-10-12 11:29:33,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:29:33,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:33,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:29:33,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:29:33,230 INFO L87 Difference]: Start difference. First operand 46119 states and 60649 transitions. Second operand 9 states. [2020-10-12 11:29:33,400 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:29:34,378 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 11:29:38,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:38,397 INFO L93 Difference]: Finished difference Result 124955 states and 174700 transitions. [2020-10-12 11:29:38,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 11:29:38,398 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 349 [2020-10-12 11:29:38,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:38,699 INFO L225 Difference]: With dead ends: 124955 [2020-10-12 11:29:38,699 INFO L226 Difference]: Without dead ends: 84100 [2020-10-12 11:29:38,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:29:38,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84100 states. [2020-10-12 11:29:40,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84100 to 82844. [2020-10-12 11:29:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82844 states. [2020-10-12 11:29:40,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82844 states to 82844 states and 108970 transitions. [2020-10-12 11:29:40,590 INFO L78 Accepts]: Start accepts. Automaton has 82844 states and 108970 transitions. Word has length 349 [2020-10-12 11:29:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:40,591 INFO L479 AbstractCegarLoop]: Abstraction has 82844 states and 108970 transitions. [2020-10-12 11:29:40,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:29:40,591 INFO L276 IsEmpty]: Start isEmpty. Operand 82844 states and 108970 transitions. [2020-10-12 11:29:40,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-12 11:29:40,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:40,680 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:29:40,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 11:29:40,681 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:40,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:40,682 INFO L82 PathProgramCache]: Analyzing trace with hash 66757416, now seen corresponding path program 1 times [2020-10-12 11:29:40,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:40,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699090283] [2020-10-12 11:29:40,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:40,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:41,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:44,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:45,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:45,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:45,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:45,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-12 11:29:45,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:29:45,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 11:29:45,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:45,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 11:29:45,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:29:45,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 328 [2020-10-12 11:29:45,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:46,176 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:46,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:46,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:46,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:46,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:46,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:46,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:29:46,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:46,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:46,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:46,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:29:46,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:46,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:46,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:46,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:46,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:29:46,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:46,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:29:46,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:29:46,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:46,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:29:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:46,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:46,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:46,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:46,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 11:29:46,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:29:46,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-12 11:29:46,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-12 11:29:46,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:46,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-12 11:29:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:46,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:46,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:46,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 11:29:46,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:46,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 11:29:46,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:46,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:29:46,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:46,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 11:29:46,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 167 proven. 23 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 11:29:47,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699090283] [2020-10-12 11:29:47,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:47,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 11:29:47,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912768845] [2020-10-12 11:29:47,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 11:29:47,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:47,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 11:29:47,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:29:47,294 INFO L87 Difference]: Start difference. First operand 82844 states and 108970 transitions. Second operand 10 states. [2020-10-12 11:29:47,457 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:29:48,670 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 138 [2020-10-12 11:29:50,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:50,649 INFO L93 Difference]: Finished difference Result 158874 states and 209282 transitions. [2020-10-12 11:29:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:29:50,650 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 354 [2020-10-12 11:29:50,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:50,851 INFO L225 Difference]: With dead ends: 158874 [2020-10-12 11:29:50,851 INFO L226 Difference]: Without dead ends: 75510 [2020-10-12 11:29:50,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:29:51,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75510 states. [2020-10-12 11:29:52,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75510 to 75096. [2020-10-12 11:29:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75096 states. [2020-10-12 11:29:52,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75096 states to 75096 states and 98166 transitions. [2020-10-12 11:29:52,812 INFO L78 Accepts]: Start accepts. Automaton has 75096 states and 98166 transitions. Word has length 354 [2020-10-12 11:29:52,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:52,813 INFO L479 AbstractCegarLoop]: Abstraction has 75096 states and 98166 transitions. [2020-10-12 11:29:52,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 11:29:52,813 INFO L276 IsEmpty]: Start isEmpty. Operand 75096 states and 98166 transitions. [2020-10-12 11:29:52,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-12 11:29:52,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:52,867 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:29:52,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 11:29:52,867 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:52,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:52,867 INFO L82 PathProgramCache]: Analyzing trace with hash -632553170, now seen corresponding path program 1 times [2020-10-12 11:29:52,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:52,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224681955] [2020-10-12 11:29:52,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:52,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:53,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:55,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:57,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:57,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-12 11:29:57,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:29:57,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 11:29:57,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:57,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 11:29:57,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:29:57,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-12 11:29:57,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:58,809 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-10-12 11:29:59,063 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-10-12 11:29:59,358 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2020-10-12 11:29:59,664 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2020-10-12 11:30:00,045 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 85 [2020-10-12 11:30:00,448 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 81 [2020-10-12 11:30:00,815 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 73 [2020-10-12 11:30:01,142 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 60 [2020-10-12 11:30:01,440 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 52 [2020-10-12 11:30:01,606 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:30:01,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:30:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:01,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:01,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:01,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:30:01,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:01,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:30:01,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:01,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:30:01,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:30:01,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:30:01,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:01,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:30:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:01,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:01,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:01,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:30:01,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:01,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 11:30:01,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:30:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:30:01,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:01,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:30:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:01,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:02,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:02,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 11:30:02,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:02,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-12 11:30:02,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:02,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:30:02,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:02,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-12 11:30:02,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:03,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-12 11:30:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:03,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:03,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:03,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 11:30:03,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:03,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 11:30:03,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:30:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 11:30:03,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:03,657 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2020-10-12 11:30:04,176 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 113 [2020-10-12 11:30:05,289 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 40 proven. 162 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 11:30:05,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224681955] [2020-10-12 11:30:05,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:30:05,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:30:05,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084676751] [2020-10-12 11:30:05,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 11:30:05,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:30:05,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 11:30:05,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2020-10-12 11:30:05,292 INFO L87 Difference]: Start difference. First operand 75096 states and 98166 transitions. Second operand 20 states. [2020-10-12 11:30:05,628 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 11:30:06,046 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 54 [2020-10-12 11:30:09,482 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 91 [2020-10-12 11:30:10,386 WARN L193 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 83 [2020-10-12 11:30:11,082 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 96 [2020-10-12 11:30:12,257 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 258 DAG size of output: 177 [2020-10-12 11:30:13,477 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 269 DAG size of output: 186 [2020-10-12 11:30:15,162 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 275 DAG size of output: 184 [2020-10-12 11:30:17,116 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 278 DAG size of output: 183 [2020-10-12 11:30:17,382 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:30:17,962 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 54 [2020-10-12 11:30:18,305 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 56 [2020-10-12 11:30:18,743 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2020-10-12 11:30:19,721 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 90 [2020-10-12 11:30:19,982 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 49 [2020-10-12 11:30:22,303 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 281 DAG size of output: 182 [2020-10-12 11:30:22,699 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2020-10-12 11:30:23,333 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 85