/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:23:31,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:23:31,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:23:31,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:23:31,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:23:31,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:23:31,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:23:31,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:23:31,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:23:31,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:23:31,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:23:31,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:23:31,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:23:31,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:23:31,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:23:31,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:23:31,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:23:31,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:23:31,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:23:31,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:23:31,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:23:31,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:23:31,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:23:31,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:23:31,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:23:31,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:23:31,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:23:31,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:23:31,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:23:31,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:23:31,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:23:31,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:23:31,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:23:31,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:23:31,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:23:31,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:23:31,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:23:31,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:23:31,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:23:31,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:23:31,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:23:31,108 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 14:23:31,129 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:23:31,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:23:31,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:23:31,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:23:31,131 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:23:31,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:23:31,132 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:23:31,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:23:31,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:23:31,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:23:31,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:23:31,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:23:31,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:23:31,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:23:31,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:23:31,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:23:31,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:23:31,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:23:31,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:23:31,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:23:31,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:23:31,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:23:31,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:23:31,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:23:31,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:23:31,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:23:31,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:23:31,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:23:31,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:23:31,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:23:31,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:23:31,471 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:23:31,474 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:23:31,476 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:23:31,476 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:23:31,477 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 14:23:31,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fd541d8b/28cd70ca558c4940b056020a4fa40289/FLAGe2ea3ca67 [2020-10-13 14:23:32,106 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:23:32,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 14:23:32,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fd541d8b/28cd70ca558c4940b056020a4fa40289/FLAGe2ea3ca67 [2020-10-13 14:23:32,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fd541d8b/28cd70ca558c4940b056020a4fa40289 [2020-10-13 14:23:32,377 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:23:32,378 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:23:32,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:23:32,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:23:32,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:23:32,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:23:32" (1/1) ... [2020-10-13 14:23:32,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@795bb0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:23:32, skipping insertion in model container [2020-10-13 14:23:32,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:23:32" (1/1) ... [2020-10-13 14:23:32,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:23:32,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:23:32,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:23:32,899 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:23:33,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:23:33,039 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:23:33,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:23:33 WrapperNode [2020-10-13 14:23:33,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:23:33,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:23:33,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:23:33,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:23:33,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:23:33" (1/1) ... [2020-10-13 14:23:33,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:23:33" (1/1) ... [2020-10-13 14:23:33,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:23:33" (1/1) ... [2020-10-13 14:23:33,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:23:33" (1/1) ... [2020-10-13 14:23:33,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:23:33" (1/1) ... [2020-10-13 14:23:33,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:23:33" (1/1) ... [2020-10-13 14:23:33,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:23:33" (1/1) ... [2020-10-13 14:23:33,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:23:33,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:23:33,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:23:33,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:23:33,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:23:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:23:33,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:23:33,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:23:33,193 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:23:33,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:23:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:23:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:23:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:23:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:23:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:23:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:23:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:23:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:23:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:23:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:23:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:23:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:23:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:23:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:23:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-13 14:23:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:23:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:23:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:23:33,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:23:33,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:23:34,095 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:23:34,095 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:23:34,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:23:34 BoogieIcfgContainer [2020-10-13 14:23:34,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:23:34,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:23:34,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:23:34,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:23:34,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:23:32" (1/3) ... [2020-10-13 14:23:34,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a132f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:23:34, skipping insertion in model container [2020-10-13 14:23:34,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:23:33" (2/3) ... [2020-10-13 14:23:34,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a132f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:23:34, skipping insertion in model container [2020-10-13 14:23:34,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:23:34" (3/3) ... [2020-10-13 14:23:34,110 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 14:23:34,121 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:23:34,144 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:23:34,158 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:23:34,181 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:23:34,181 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:23:34,181 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:23:34,182 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:23:34,182 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:23:34,182 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:23:34,182 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:23:34,182 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:23:34,203 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-10-13 14:23:34,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 14:23:34,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:23:34,215 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] [2020-10-13 14:23:34,216 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:23:34,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:23:34,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1558980696, now seen corresponding path program 1 times [2020-10-13 14:23:34,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:23:34,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102964415] [2020-10-13 14:23:34,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:23:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:34,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:34,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:35,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:35,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:35,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:36,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:36,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:38,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:39,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:39,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:39,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:39,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 14:23:39,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:23:39,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 14:23:39,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:39,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:23:39,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:23:39,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 14:23:39,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:23:40,016 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:23:40,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:23:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:40,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:40,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:40,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:23:40,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:23:40,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:23:40,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:40,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:23:40,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:23:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:23:40,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:23:40,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102964415] [2020-10-13 14:23:40,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:23:40,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:23:40,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893455119] [2020-10-13 14:23:40,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:23:40,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:23:40,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:23:40,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:23:40,109 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 7 states. [2020-10-13 14:23:40,392 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 14:23:42,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:23:42,190 INFO L93 Difference]: Finished difference Result 861 states and 1397 transitions. [2020-10-13 14:23:42,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:23:42,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-13 14:23:42,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:23:42,223 INFO L225 Difference]: With dead ends: 861 [2020-10-13 14:23:42,223 INFO L226 Difference]: Without dead ends: 725 [2020-10-13 14:23:42,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:23:42,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-10-13 14:23:42,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 360. [2020-10-13 14:23:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-10-13 14:23:42,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 530 transitions. [2020-10-13 14:23:42,367 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 530 transitions. Word has length 94 [2020-10-13 14:23:42,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:23:42,369 INFO L479 AbstractCegarLoop]: Abstraction has 360 states and 530 transitions. [2020-10-13 14:23:42,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:23:42,370 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 530 transitions. [2020-10-13 14:23:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 14:23:42,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:23:42,383 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] [2020-10-13 14:23:42,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:23:42,384 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:23:42,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:23:42,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1530648131, now seen corresponding path program 1 times [2020-10-13 14:23:42,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:23:42,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495047702] [2020-10-13 14:23:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:23:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:42,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:42,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:42,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:42,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:42,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:42,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:43,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:43,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:46,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:47,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:47,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:47,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:47,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 14:23:47,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:23:47,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 14:23:47,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:23:47,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:23:47,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 14:23:47,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:23:47,714 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:23:47,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:23:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:47,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:47,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:47,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:23:47,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:23:47,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:23:47,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:23:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:23:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:23:47,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:47,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:23:47,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495047702] [2020-10-13 14:23:47,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:23:47,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:23:47,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485555185] [2020-10-13 14:23:47,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:23:47,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:23:47,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:23:47,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:23:47,761 INFO L87 Difference]: Start difference. First operand 360 states and 530 transitions. Second operand 7 states. [2020-10-13 14:23:47,960 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 14:23:49,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:23:49,632 INFO L93 Difference]: Finished difference Result 2334 states and 3655 transitions. [2020-10-13 14:23:49,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:23:49,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-13 14:23:49,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:23:49,654 INFO L225 Difference]: With dead ends: 2334 [2020-10-13 14:23:49,654 INFO L226 Difference]: Without dead ends: 2032 [2020-10-13 14:23:49,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:23:49,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2020-10-13 14:23:49,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 910. [2020-10-13 14:23:49,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-10-13 14:23:49,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1392 transitions. [2020-10-13 14:23:49,760 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1392 transitions. Word has length 95 [2020-10-13 14:23:49,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:23:49,765 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1392 transitions. [2020-10-13 14:23:49,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:23:49,766 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1392 transitions. [2020-10-13 14:23:49,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 14:23:49,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:23:49,772 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] [2020-10-13 14:23:49,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:23:49,772 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:23:49,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:23:49,773 INFO L82 PathProgramCache]: Analyzing trace with hash 2136821944, now seen corresponding path program 1 times [2020-10-13 14:23:49,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:23:49,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373165238] [2020-10-13 14:23:49,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:23:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:49,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:49,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:49,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:49,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:50,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:50,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:50,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:50,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:50,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:51,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:52,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:52,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:54,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:54,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 14:23:54,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:23:54,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:23:54,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:23:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:23:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 14:23:54,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:55,019 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:23:55,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:23:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:55,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:55,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:23:55,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:23:55,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:23:55,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:23:55,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:23:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:23:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:23:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:23:55,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:23:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:23:55,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373165238] [2020-10-13 14:23:55,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:23:55,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:23:55,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675904583] [2020-10-13 14:23:55,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:23:55,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:23:55,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:23:55,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:23:55,060 INFO L87 Difference]: Start difference. First operand 910 states and 1392 transitions. Second operand 7 states. [2020-10-13 14:23:55,245 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 14:23:56,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:23:56,695 INFO L93 Difference]: Finished difference Result 3927 states and 6198 transitions. [2020-10-13 14:23:56,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:23:56,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-13 14:23:56,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:23:56,725 INFO L225 Difference]: With dead ends: 3927 [2020-10-13 14:23:56,729 INFO L226 Difference]: Without dead ends: 3454 [2020-10-13 14:23:56,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:23:56,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3454 states. [2020-10-13 14:23:56,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3454 to 1166. [2020-10-13 14:23:56,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2020-10-13 14:23:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1788 transitions. [2020-10-13 14:23:56,856 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1788 transitions. Word has length 96 [2020-10-13 14:23:56,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:23:56,858 INFO L479 AbstractCegarLoop]: Abstraction has 1166 states and 1788 transitions. [2020-10-13 14:23:56,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:23:56,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1788 transitions. [2020-10-13 14:23:56,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 14:23:56,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:23:56,866 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] [2020-10-13 14:23:56,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:23:56,867 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:23:56,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:23:56,868 INFO L82 PathProgramCache]: Analyzing trace with hash 848214471, now seen corresponding path program 1 times [2020-10-13 14:23:56,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:23:56,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252995376] [2020-10-13 14:23:56,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:23:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:23:56,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:56,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:56,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:57,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:57,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:57,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:23:57,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:00,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:00,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:00,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:00,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:00,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:01,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:01,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 14:24:01,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:24:01,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:24:01,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:01,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:24:01,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:24:01,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:24:01,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:02,155 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:24:02,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:24:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:02,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:02,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:02,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:24:02,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:24:02,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:24:02,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:24:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:24:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:24:02,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:24:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:24:02,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252995376] [2020-10-13 14:24:02,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:24:02,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:24:02,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725211638] [2020-10-13 14:24:02,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:24:02,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:24:02,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:24:02,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:24:02,215 INFO L87 Difference]: Start difference. First operand 1166 states and 1788 transitions. Second operand 7 states. [2020-10-13 14:24:02,494 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 14:24:03,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:24:03,994 INFO L93 Difference]: Finished difference Result 6380 states and 10086 transitions. [2020-10-13 14:24:03,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:24:03,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-13 14:24:03,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:24:04,024 INFO L225 Difference]: With dead ends: 6380 [2020-10-13 14:24:04,024 INFO L226 Difference]: Without dead ends: 5418 [2020-10-13 14:24:04,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:24:04,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5418 states. [2020-10-13 14:24:04,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5418 to 1824. [2020-10-13 14:24:04,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1824 states. [2020-10-13 14:24:04,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2833 transitions. [2020-10-13 14:24:04,203 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2833 transitions. Word has length 96 [2020-10-13 14:24:04,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:24:04,203 INFO L479 AbstractCegarLoop]: Abstraction has 1824 states and 2833 transitions. [2020-10-13 14:24:04,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:24:04,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2833 transitions. [2020-10-13 14:24:04,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 14:24:04,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:24:04,206 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] [2020-10-13 14:24:04,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:24:04,207 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:24:04,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:24:04,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1154437097, now seen corresponding path program 1 times [2020-10-13 14:24:04,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:24:04,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723790919] [2020-10-13 14:24:04,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:24:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:04,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:04,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:04,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:04,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:04,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:04,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:04,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:05,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:05,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:06,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:06,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:06,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:09,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:09,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 14:24:09,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:24:09,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:24:09,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:09,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:24:09,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:24:09,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:24:09,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:09,477 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:24:09,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:24:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:09,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:09,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:09,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:24:09,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:24:09,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:24:09,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:24:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:24:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:24:09,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:24:09,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:24:09,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723790919] [2020-10-13 14:24:09,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:24:09,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:24:09,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243869675] [2020-10-13 14:24:09,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:24:09,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:24:09,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:24:09,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:24:09,530 INFO L87 Difference]: Start difference. First operand 1824 states and 2833 transitions. Second operand 7 states. [2020-10-13 14:24:09,711 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 14:24:11,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:24:11,122 INFO L93 Difference]: Finished difference Result 7717 states and 12135 transitions. [2020-10-13 14:24:11,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:24:11,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-13 14:24:11,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:24:11,154 INFO L225 Difference]: With dead ends: 7717 [2020-10-13 14:24:11,155 INFO L226 Difference]: Without dead ends: 6716 [2020-10-13 14:24:11,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:24:11,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6716 states. [2020-10-13 14:24:11,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6716 to 2901. [2020-10-13 14:24:11,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2901 states. [2020-10-13 14:24:11,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 4501 transitions. [2020-10-13 14:24:11,391 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 4501 transitions. Word has length 96 [2020-10-13 14:24:11,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:24:11,392 INFO L479 AbstractCegarLoop]: Abstraction has 2901 states and 4501 transitions. [2020-10-13 14:24:11,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:24:11,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 4501 transitions. [2020-10-13 14:24:11,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:24:11,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:24:11,396 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] [2020-10-13 14:24:11,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:24:11,396 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:24:11,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:24:11,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1118107570, now seen corresponding path program 1 times [2020-10-13 14:24:11,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:24:11,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814713159] [2020-10-13 14:24:11,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:24:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:11,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:11,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:11,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:11,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:11,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:11,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:12,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:12,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:14,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:14,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:14,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:15,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:15,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:16,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:16,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:24:16,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:24:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:24:16,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:24:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:24:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 14:24:16,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:16,611 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:24:16,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:24:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:16,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:16,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:16,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:24:16,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:24:16,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:24:16,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:16,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:24:16,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:24:16,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:24:16,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:24:16,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814713159] [2020-10-13 14:24:16,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:24:16,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:24:16,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762354632] [2020-10-13 14:24:16,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:24:16,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:24:16,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:24:16,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:24:16,650 INFO L87 Difference]: Start difference. First operand 2901 states and 4501 transitions. Second operand 7 states. [2020-10-13 14:24:16,852 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 14:24:18,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:24:18,556 INFO L93 Difference]: Finished difference Result 13512 states and 21292 transitions. [2020-10-13 14:24:18,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:24:18,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 14:24:18,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:24:18,600 INFO L225 Difference]: With dead ends: 13512 [2020-10-13 14:24:18,600 INFO L226 Difference]: Without dead ends: 11744 [2020-10-13 14:24:18,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:24:18,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11744 states. [2020-10-13 14:24:18,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11744 to 3775. [2020-10-13 14:24:18,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3775 states. [2020-10-13 14:24:18,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5879 transitions. [2020-10-13 14:24:19,000 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5879 transitions. Word has length 97 [2020-10-13 14:24:19,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:24:19,000 INFO L479 AbstractCegarLoop]: Abstraction has 3775 states and 5879 transitions. [2020-10-13 14:24:19,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:24:19,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5879 transitions. [2020-10-13 14:24:19,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:24:19,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:24:19,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:24:19,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:24:19,004 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:24:19,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:24:19,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1888252253, now seen corresponding path program 1 times [2020-10-13 14:24:19,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:24:19,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398344352] [2020-10-13 14:24:19,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:24:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:19,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:19,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:19,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:19,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:19,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:19,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:19,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:19,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:20,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:20,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:21,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:21,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:21,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:22,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:22,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:24,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:24,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:24:24,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:24:24,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:24:24,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:24,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:24:24,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:24:24,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:24:24,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:24,218 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:24:24,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:24:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:24,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:24,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:24,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:24:24,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:24:24,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:24:24,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:24:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:24:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:24:24,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:24,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:24:24,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398344352] [2020-10-13 14:24:24,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:24:24,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:24:24,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593025143] [2020-10-13 14:24:24,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:24:24,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:24:24,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:24:24,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:24:24,253 INFO L87 Difference]: Start difference. First operand 3775 states and 5879 transitions. Second operand 7 states. [2020-10-13 14:24:24,438 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 14:24:26,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:24:26,226 INFO L93 Difference]: Finished difference Result 16408 states and 25890 transitions. [2020-10-13 14:24:26,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:24:26,226 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 14:24:26,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:24:26,259 INFO L225 Difference]: With dead ends: 16408 [2020-10-13 14:24:26,259 INFO L226 Difference]: Without dead ends: 14001 [2020-10-13 14:24:26,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:24:26,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14001 states. [2020-10-13 14:24:26,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14001 to 4986. [2020-10-13 14:24:26,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4986 states. [2020-10-13 14:24:26,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4986 states to 4986 states and 7786 transitions. [2020-10-13 14:24:26,841 INFO L78 Accepts]: Start accepts. Automaton has 4986 states and 7786 transitions. Word has length 97 [2020-10-13 14:24:26,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:24:26,842 INFO L479 AbstractCegarLoop]: Abstraction has 4986 states and 7786 transitions. [2020-10-13 14:24:26,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:24:26,842 INFO L276 IsEmpty]: Start isEmpty. Operand 4986 states and 7786 transitions. [2020-10-13 14:24:26,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 14:24:26,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:24:26,846 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] [2020-10-13 14:24:26,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:24:26,846 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:24:26,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:24:26,846 INFO L82 PathProgramCache]: Analyzing trace with hash 86835544, now seen corresponding path program 1 times [2020-10-13 14:24:26,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:24:26,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376496137] [2020-10-13 14:24:26,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:24:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:26,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:26,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:26,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:27,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:27,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:27,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:27,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:27,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:30,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:31,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:31,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 14:24:31,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:24:31,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:24:31,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:31,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:24:31,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:24:31,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:24:31,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:32,086 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:24:32,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:24:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:32,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:32,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:32,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:24:32,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:24:32,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:24:32,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:24:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:24:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:24:32,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:24:32,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376496137] [2020-10-13 14:24:32,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:24:32,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:24:32,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425628080] [2020-10-13 14:24:32,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:24:32,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:24:32,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:24:32,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:24:32,146 INFO L87 Difference]: Start difference. First operand 4986 states and 7786 transitions. Second operand 6 states. [2020-10-13 14:24:32,366 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 14:24:33,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:24:33,700 INFO L93 Difference]: Finished difference Result 10041 states and 15729 transitions. [2020-10-13 14:24:33,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:24:33,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-13 14:24:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:24:33,717 INFO L225 Difference]: With dead ends: 10041 [2020-10-13 14:24:33,717 INFO L226 Difference]: Without dead ends: 7462 [2020-10-13 14:24:33,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:24:33,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7462 states. [2020-10-13 14:24:34,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7462 to 5301. [2020-10-13 14:24:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5301 states. [2020-10-13 14:24:34,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5301 states to 5301 states and 8234 transitions. [2020-10-13 14:24:34,217 INFO L78 Accepts]: Start accepts. Automaton has 5301 states and 8234 transitions. Word has length 98 [2020-10-13 14:24:34,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:24:34,218 INFO L479 AbstractCegarLoop]: Abstraction has 5301 states and 8234 transitions. [2020-10-13 14:24:34,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:24:34,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5301 states and 8234 transitions. [2020-10-13 14:24:34,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 14:24:34,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:24:34,222 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] [2020-10-13 14:24:34,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:24:34,223 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:24:34,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:24:34,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1625084794, now seen corresponding path program 1 times [2020-10-13 14:24:34,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:24:34,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530994380] [2020-10-13 14:24:34,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:24:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:34,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:34,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:34,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:34,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:35,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:35,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:35,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:35,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:35,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:35,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:37,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:39,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:39,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 14:24:39,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:24:39,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:24:39,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:39,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:24:39,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:24:39,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:24:39,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:39,431 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:24:39,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:24:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:39,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:39,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:39,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:24:39,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:24:39,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:24:39,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:24:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:24:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:24:39,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:24:39,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530994380] [2020-10-13 14:24:39,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:24:39,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:24:39,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910812403] [2020-10-13 14:24:39,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:24:39,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:24:39,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:24:39,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:24:39,461 INFO L87 Difference]: Start difference. First operand 5301 states and 8234 transitions. Second operand 7 states. [2020-10-13 14:24:39,652 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 14:24:43,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:24:43,024 INFO L93 Difference]: Finished difference Result 25599 states and 40091 transitions. [2020-10-13 14:24:43,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:24:43,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-13 14:24:43,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:24:43,059 INFO L225 Difference]: With dead ends: 25599 [2020-10-13 14:24:43,059 INFO L226 Difference]: Without dead ends: 23324 [2020-10-13 14:24:43,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:24:43,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23324 states. [2020-10-13 14:24:43,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23324 to 5462. [2020-10-13 14:24:43,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5462 states. [2020-10-13 14:24:44,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5462 states to 5462 states and 8432 transitions. [2020-10-13 14:24:44,000 INFO L78 Accepts]: Start accepts. Automaton has 5462 states and 8432 transitions. Word has length 98 [2020-10-13 14:24:44,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:24:44,001 INFO L479 AbstractCegarLoop]: Abstraction has 5462 states and 8432 transitions. [2020-10-13 14:24:44,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:24:44,001 INFO L276 IsEmpty]: Start isEmpty. Operand 5462 states and 8432 transitions. [2020-10-13 14:24:44,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 14:24:44,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:24:44,006 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] [2020-10-13 14:24:44,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:24:44,006 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:24:44,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:24:44,007 INFO L82 PathProgramCache]: Analyzing trace with hash -824490600, now seen corresponding path program 1 times [2020-10-13 14:24:44,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:24:44,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470196298] [2020-10-13 14:24:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:24:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:44,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:44,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:44,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:44,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:44,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:44,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:44,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:44,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:45,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:45,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:45,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:49,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:49,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 14:24:49,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:24:49,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:24:49,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:49,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:24:49,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:24:49,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:24:49,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:49,220 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:24:49,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:24:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:49,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:49,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:49,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:24:49,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:24:49,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:24:49,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:49,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:24:49,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:24:49,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:24:49,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:49,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:24:49,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470196298] [2020-10-13 14:24:49,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:24:49,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:24:49,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499392922] [2020-10-13 14:24:49,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:24:49,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:24:49,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:24:49,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:24:49,247 INFO L87 Difference]: Start difference. First operand 5462 states and 8432 transitions. Second operand 7 states. [2020-10-13 14:24:49,443 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 14:24:52,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:24:52,728 INFO L93 Difference]: Finished difference Result 21646 states and 33656 transitions. [2020-10-13 14:24:52,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:24:52,728 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-13 14:24:52,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:24:52,756 INFO L225 Difference]: With dead ends: 21646 [2020-10-13 14:24:52,756 INFO L226 Difference]: Without dead ends: 17223 [2020-10-13 14:24:52,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:24:52,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17223 states. [2020-10-13 14:24:53,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17223 to 5421. [2020-10-13 14:24:53,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5421 states. [2020-10-13 14:24:53,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5421 states to 5421 states and 8369 transitions. [2020-10-13 14:24:53,663 INFO L78 Accepts]: Start accepts. Automaton has 5421 states and 8369 transitions. Word has length 98 [2020-10-13 14:24:53,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:24:53,663 INFO L479 AbstractCegarLoop]: Abstraction has 5421 states and 8369 transitions. [2020-10-13 14:24:53,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:24:53,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5421 states and 8369 transitions. [2020-10-13 14:24:53,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 14:24:53,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:24:53,667 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] [2020-10-13 14:24:53,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:24:53,667 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:24:53,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:24:53,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1235925609, now seen corresponding path program 1 times [2020-10-13 14:24:53,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:24:53,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188874523] [2020-10-13 14:24:53,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:24:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:53,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:53,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:53,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:53,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:53,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:54,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:54,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:54,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:54,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:55,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:55,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:56,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:58,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:58,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 14:24:58,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:24:58,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:24:58,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:58,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:24:58,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:24:58,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:24:58,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:58,876 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:24:58,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:24:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:58,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:58,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:58,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:24:58,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:24:58,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:24:58,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:58,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:24:58,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:24:58,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:24:58,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:58,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:24:58,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188874523] [2020-10-13 14:24:58,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:24:58,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:24:58,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246421728] [2020-10-13 14:24:58,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:24:58,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:24:58,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:24:58,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:24:58,900 INFO L87 Difference]: Start difference. First operand 5421 states and 8369 transitions. Second operand 7 states. [2020-10-13 14:24:59,080 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 14:25:02,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:25:02,236 INFO L93 Difference]: Finished difference Result 21845 states and 33977 transitions. [2020-10-13 14:25:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:25:02,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-13 14:25:02,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:25:02,258 INFO L225 Difference]: With dead ends: 21845 [2020-10-13 14:25:02,259 INFO L226 Difference]: Without dead ends: 17484 [2020-10-13 14:25:02,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:25:02,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17484 states. [2020-10-13 14:25:03,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17484 to 5392. [2020-10-13 14:25:03,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5392 states. [2020-10-13 14:25:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 8330 transitions. [2020-10-13 14:25:03,026 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 8330 transitions. Word has length 98 [2020-10-13 14:25:03,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:25:03,026 INFO L479 AbstractCegarLoop]: Abstraction has 5392 states and 8330 transitions. [2020-10-13 14:25:03,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:25:03,027 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 8330 transitions. [2020-10-13 14:25:03,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 14:25:03,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:25:03,030 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] [2020-10-13 14:25:03,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:25:03,030 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:25:03,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:25:03,031 INFO L82 PathProgramCache]: Analyzing trace with hash 74957688, now seen corresponding path program 1 times [2020-10-13 14:25:03,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:25:03,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637540066] [2020-10-13 14:25:03,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:25:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:03,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:03,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:03,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:03,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:03,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:04,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:04,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:04,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:04,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:04,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:05,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:05,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:06,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:06,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:06,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:07,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:08,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:08,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 14:25:08,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:25:08,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:25:08,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:08,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:25:08,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:25:08,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:25:08,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:08,228 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:25:08,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:25:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:08,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:08,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:08,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:25:08,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:25:08,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:25:08,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:25:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:25:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:25:08,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:25:08,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637540066] [2020-10-13 14:25:08,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:25:08,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:25:08,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498347950] [2020-10-13 14:25:08,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:25:08,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:25:08,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:25:08,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:25:08,253 INFO L87 Difference]: Start difference. First operand 5392 states and 8330 transitions. Second operand 7 states. [2020-10-13 14:25:08,445 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 14:25:11,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:25:11,959 INFO L93 Difference]: Finished difference Result 21746 states and 33826 transitions. [2020-10-13 14:25:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:25:11,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-13 14:25:11,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:25:11,975 INFO L225 Difference]: With dead ends: 21746 [2020-10-13 14:25:11,975 INFO L226 Difference]: Without dead ends: 17369 [2020-10-13 14:25:11,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:25:11,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17369 states. [2020-10-13 14:25:12,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17369 to 5367. [2020-10-13 14:25:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5367 states. [2020-10-13 14:25:12,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5367 states to 5367 states and 8295 transitions. [2020-10-13 14:25:12,849 INFO L78 Accepts]: Start accepts. Automaton has 5367 states and 8295 transitions. Word has length 98 [2020-10-13 14:25:12,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:25:12,849 INFO L479 AbstractCegarLoop]: Abstraction has 5367 states and 8295 transitions. [2020-10-13 14:25:12,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:25:12,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5367 states and 8295 transitions. [2020-10-13 14:25:12,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 14:25:12,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:25:12,853 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] [2020-10-13 14:25:12,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:25:12,854 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:25:12,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:25:12,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1213649785, now seen corresponding path program 1 times [2020-10-13 14:25:12,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:25:12,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974505561] [2020-10-13 14:25:12,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:25:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:12,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:12,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:12,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:13,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:13,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:13,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:13,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:13,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:13,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:14,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:14,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:17,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:17,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:17,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 14:25:17,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:25:17,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:25:17,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:17,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:25:17,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:25:17,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 14:25:17,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:18,065 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:25:18,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:25:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:18,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:18,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:18,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:25:18,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:25:18,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:25:18,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:25:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:25:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:25:18,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:25:18,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974505561] [2020-10-13 14:25:18,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:25:18,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:25:18,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145583286] [2020-10-13 14:25:18,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:25:18,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:25:18,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:25:18,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:25:18,100 INFO L87 Difference]: Start difference. First operand 5367 states and 8295 transitions. Second operand 6 states. [2020-10-13 14:25:18,282 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 14:25:19,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:25:19,579 INFO L93 Difference]: Finished difference Result 9927 states and 15401 transitions. [2020-10-13 14:25:19,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:25:19,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-13 14:25:19,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:25:19,587 INFO L225 Difference]: With dead ends: 9927 [2020-10-13 14:25:19,587 INFO L226 Difference]: Without dead ends: 5311 [2020-10-13 14:25:19,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:25:19,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5311 states. [2020-10-13 14:25:20,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5311 to 5309. [2020-10-13 14:25:20,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5309 states. [2020-10-13 14:25:20,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 8217 transitions. [2020-10-13 14:25:20,409 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 8217 transitions. Word has length 98 [2020-10-13 14:25:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:25:20,409 INFO L479 AbstractCegarLoop]: Abstraction has 5309 states and 8217 transitions. [2020-10-13 14:25:20,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:25:20,410 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 8217 transitions. [2020-10-13 14:25:20,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 14:25:20,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:25:20,414 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] [2020-10-13 14:25:20,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:25:20,414 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:25:20,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:25:20,414 INFO L82 PathProgramCache]: Analyzing trace with hash -723149428, now seen corresponding path program 1 times [2020-10-13 14:25:20,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:25:20,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674704517] [2020-10-13 14:25:20,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:25:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:20,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:20,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:20,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:20,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:20,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:20,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:20,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:22,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:22,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:22,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:22,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:23,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:23,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:23,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:23,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:24,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:24,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:25,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:25,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 14:25:25,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:25:25,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:25:25,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:25,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:25:25,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 14:25:25,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 14:25:25,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:25,608 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:25:25,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:25:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:25,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:25,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:25,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:25:25,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:25:25,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:25:25,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:25:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:25:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:25:25,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:25:25,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674704517] [2020-10-13 14:25:25,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:25:25,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:25:25,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807450578] [2020-10-13 14:25:25,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:25:25,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:25:25,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:25:25,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:25:25,633 INFO L87 Difference]: Start difference. First operand 5309 states and 8217 transitions. Second operand 4 states. [2020-10-13 14:25:25,814 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:25:27,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:25:27,861 INFO L93 Difference]: Finished difference Result 14615 states and 22731 transitions. [2020-10-13 14:25:27,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:25:27,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-13 14:25:27,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:25:27,873 INFO L225 Difference]: With dead ends: 14615 [2020-10-13 14:25:27,873 INFO L226 Difference]: Without dead ends: 10389 [2020-10-13 14:25:27,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:25:27,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10389 states. [2020-10-13 14:25:29,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10389 to 10387. [2020-10-13 14:25:29,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10387 states. [2020-10-13 14:25:29,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10387 states to 10387 states and 16009 transitions. [2020-10-13 14:25:29,183 INFO L78 Accepts]: Start accepts. Automaton has 10387 states and 16009 transitions. Word has length 99 [2020-10-13 14:25:29,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:25:29,183 INFO L479 AbstractCegarLoop]: Abstraction has 10387 states and 16009 transitions. [2020-10-13 14:25:29,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:25:29,183 INFO L276 IsEmpty]: Start isEmpty. Operand 10387 states and 16009 transitions. [2020-10-13 14:25:29,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 14:25:29,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:25:29,188 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] [2020-10-13 14:25:29,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:25:29,189 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:25:29,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:25:29,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1435026354, now seen corresponding path program 1 times [2020-10-13 14:25:29,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:25:29,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133607281] [2020-10-13 14:25:29,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:25:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:29,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:29,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:29,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:29,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:29,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:29,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:30,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:30,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:30,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:30,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:30,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:30,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:30,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:31,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:31,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:31,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:31,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:31,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:33,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:34,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:34,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:34,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 14:25:34,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 14:25:34,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:25:34,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:25:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:25:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 14:25:34,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:34,394 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:25:34,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:25:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:34,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:34,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:34,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:25:34,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:25:34,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:25:34,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:25:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:25:34,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:25:34,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:25:34,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133607281] [2020-10-13 14:25:34,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:25:34,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:25:34,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997836588] [2020-10-13 14:25:34,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:25:34,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:25:34,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:25:34,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:25:34,426 INFO L87 Difference]: Start difference. First operand 10387 states and 16009 transitions. Second operand 6 states. [2020-10-13 14:25:34,609 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 14:25:36,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:25:36,603 INFO L93 Difference]: Finished difference Result 19143 states and 29515 transitions. [2020-10-13 14:25:36,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:25:36,604 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-13 14:25:36,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:25:36,615 INFO L225 Difference]: With dead ends: 19143 [2020-10-13 14:25:36,615 INFO L226 Difference]: Without dead ends: 10245 [2020-10-13 14:25:36,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:25:36,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10245 states. [2020-10-13 14:25:37,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10245 to 10243. [2020-10-13 14:25:37,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10243 states. [2020-10-13 14:25:37,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10243 states to 10243 states and 15786 transitions. [2020-10-13 14:25:37,916 INFO L78 Accepts]: Start accepts. Automaton has 10243 states and 15786 transitions. Word has length 101 [2020-10-13 14:25:37,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:25:37,917 INFO L479 AbstractCegarLoop]: Abstraction has 10243 states and 15786 transitions. [2020-10-13 14:25:37,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:25:37,917 INFO L276 IsEmpty]: Start isEmpty. Operand 10243 states and 15786 transitions. [2020-10-13 14:25:37,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 14:25:37,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:25:37,920 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] [2020-10-13 14:25:37,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:25:37,921 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:25:37,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:25:37,921 INFO L82 PathProgramCache]: Analyzing trace with hash -433701475, now seen corresponding path program 1 times [2020-10-13 14:25:37,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:25:37,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185476656] [2020-10-13 14:25:37,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:25:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:37,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:37,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:38,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:38,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:38,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:38,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:38,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:38,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:38,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:39,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:39,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:39,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:39,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:39,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:40,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:40,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:40,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:41,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:41,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:42,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:42,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 14:25:42,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 14:25:42,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:25:42,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:42,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:25:42,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:25:42,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 14:25:42,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:43,125 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:25:43,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:25:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:43,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:43,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:43,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:25:43,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:25:43,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:25:43,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:25:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:25:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:25:43,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:43,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:25:43,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185476656] [2020-10-13 14:25:43,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:25:43,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:25:43,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445309317] [2020-10-13 14:25:43,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:25:43,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:25:43,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:25:43,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:25:43,156 INFO L87 Difference]: Start difference. First operand 10243 states and 15786 transitions. Second operand 6 states. [2020-10-13 14:25:43,332 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 14:25:45,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:25:45,289 INFO L93 Difference]: Finished difference Result 18919 states and 29164 transitions. [2020-10-13 14:25:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:25:45,289 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-13 14:25:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:25:45,298 INFO L225 Difference]: With dead ends: 18919 [2020-10-13 14:25:45,298 INFO L226 Difference]: Without dead ends: 9950 [2020-10-13 14:25:45,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:25:45,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9950 states. [2020-10-13 14:25:46,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9950 to 9948. [2020-10-13 14:25:46,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9948 states. [2020-10-13 14:25:46,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9948 states to 9948 states and 15319 transitions. [2020-10-13 14:25:46,496 INFO L78 Accepts]: Start accepts. Automaton has 9948 states and 15319 transitions. Word has length 101 [2020-10-13 14:25:46,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:25:46,496 INFO L479 AbstractCegarLoop]: Abstraction has 9948 states and 15319 transitions. [2020-10-13 14:25:46,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:25:46,496 INFO L276 IsEmpty]: Start isEmpty. Operand 9948 states and 15319 transitions. [2020-10-13 14:25:46,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 14:25:46,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:25:46,499 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] [2020-10-13 14:25:46,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:25:46,499 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:25:46,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:25:46,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1834901780, now seen corresponding path program 1 times [2020-10-13 14:25:46,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:25:46,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499905765] [2020-10-13 14:25:46,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:25:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:46,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:46,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:46,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:46,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:46,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:46,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:46,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:47,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:47,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:48,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:48,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:48,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:48,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:49,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:50,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:50,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:50,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:50,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:51,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:51,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:51,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:51,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 14:25:51,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-13 14:25:51,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:25:51,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:51,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:25:51,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 14:25:51,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 14:25:51,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:51,961 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:25:51,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:25:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:51,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:51,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:51,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:25:51,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:25:51,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:25:51,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:51,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:25:51,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:25:51,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:25:51,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:25:52,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499905765] [2020-10-13 14:25:52,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:25:52,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:25:52,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479309935] [2020-10-13 14:25:52,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:25:52,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:25:52,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:25:52,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:25:52,002 INFO L87 Difference]: Start difference. First operand 9948 states and 15319 transitions. Second operand 12 states. [2020-10-13 14:25:52,221 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:26:01,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:26:01,181 INFO L93 Difference]: Finished difference Result 57233 states and 87819 transitions. [2020-10-13 14:26:01,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 14:26:01,181 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-10-13 14:26:01,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:26:01,231 INFO L225 Difference]: With dead ends: 57233 [2020-10-13 14:26:01,231 INFO L226 Difference]: Without dead ends: 48700 [2020-10-13 14:26:01,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2020-10-13 14:26:01,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48700 states. [2020-10-13 14:26:04,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48700 to 18396. [2020-10-13 14:26:04,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18396 states. [2020-10-13 14:26:04,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18396 states to 18396 states and 28310 transitions. [2020-10-13 14:26:04,181 INFO L78 Accepts]: Start accepts. Automaton has 18396 states and 28310 transitions. Word has length 101 [2020-10-13 14:26:04,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:26:04,182 INFO L479 AbstractCegarLoop]: Abstraction has 18396 states and 28310 transitions. [2020-10-13 14:26:04,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:26:04,182 INFO L276 IsEmpty]: Start isEmpty. Operand 18396 states and 28310 transitions. [2020-10-13 14:26:04,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 14:26:04,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:26:04,186 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] [2020-10-13 14:26:04,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:26:04,186 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:26:04,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:26:04,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1844560899, now seen corresponding path program 1 times [2020-10-13 14:26:04,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:26:04,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683843895] [2020-10-13 14:26:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:26:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:04,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:04,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:04,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:04,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:04,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:04,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:04,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:05,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:05,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:06,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:07,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:07,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:07,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:08,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:08,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:08,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:09,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:09,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 14:26:09,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:26:09,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:26:09,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:26:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:26:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 14:26:09,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:09,411 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:26:09,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:26:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:09,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:09,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:09,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:26:09,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:26:09,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:26:09,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:26:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:26:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:26:09,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:26:09,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683843895] [2020-10-13 14:26:09,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:26:09,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:26:09,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009566852] [2020-10-13 14:26:09,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:26:09,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:26:09,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:26:09,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:26:09,447 INFO L87 Difference]: Start difference. First operand 18396 states and 28310 transitions. Second operand 6 states. [2020-10-13 14:26:09,643 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 14:26:12,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:26:12,517 INFO L93 Difference]: Finished difference Result 31103 states and 47863 transitions. [2020-10-13 14:26:12,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:26:12,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-13 14:26:12,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:26:12,538 INFO L225 Difference]: With dead ends: 31103 [2020-10-13 14:26:12,538 INFO L226 Difference]: Without dead ends: 13536 [2020-10-13 14:26:12,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:26:12,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13536 states. [2020-10-13 14:26:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13536 to 13534. [2020-10-13 14:26:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13534 states. [2020-10-13 14:26:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13534 states to 13534 states and 20784 transitions. [2020-10-13 14:26:15,001 INFO L78 Accepts]: Start accepts. Automaton has 13534 states and 20784 transitions. Word has length 101 [2020-10-13 14:26:15,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:26:15,001 INFO L479 AbstractCegarLoop]: Abstraction has 13534 states and 20784 transitions. [2020-10-13 14:26:15,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:26:15,001 INFO L276 IsEmpty]: Start isEmpty. Operand 13534 states and 20784 transitions. [2020-10-13 14:26:15,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 14:26:15,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:26:15,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:26:15,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:26:15,004 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:26:15,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:26:15,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1646241025, now seen corresponding path program 1 times [2020-10-13 14:26:15,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:26:15,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518227325] [2020-10-13 14:26:15,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:26:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:15,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:15,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:15,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:15,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:15,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:15,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:15,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:15,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:15,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:16,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:16,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:16,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:16,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:17,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:17,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:17,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:18,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:20,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:20,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 14:26:20,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:26:20,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:26:20,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:20,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:26:20,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:26:20,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 14:26:20,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:20,200 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:26:20,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:26:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:20,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:20,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:20,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:26:20,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:26:20,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:26:20,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:20,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:26:20,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:26:20,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:26:20,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:26:20,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518227325] [2020-10-13 14:26:20,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:26:20,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:26:20,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334413521] [2020-10-13 14:26:20,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:26:20,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:26:20,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:26:20,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:26:20,233 INFO L87 Difference]: Start difference. First operand 13534 states and 20784 transitions. Second operand 6 states. [2020-10-13 14:26:20,423 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:26:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:26:23,221 INFO L93 Difference]: Finished difference Result 26312 states and 40568 transitions. [2020-10-13 14:26:23,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:26:23,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-13 14:26:23,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:26:23,237 INFO L225 Difference]: With dead ends: 26312 [2020-10-13 14:26:23,237 INFO L226 Difference]: Without dead ends: 13253 [2020-10-13 14:26:23,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:26:23,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13253 states. [2020-10-13 14:26:24,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13253 to 6845. [2020-10-13 14:26:24,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6845 states. [2020-10-13 14:26:24,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6845 states to 6845 states and 10469 transitions. [2020-10-13 14:26:24,938 INFO L78 Accepts]: Start accepts. Automaton has 6845 states and 10469 transitions. Word has length 101 [2020-10-13 14:26:24,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:26:24,938 INFO L479 AbstractCegarLoop]: Abstraction has 6845 states and 10469 transitions. [2020-10-13 14:26:24,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:26:24,938 INFO L276 IsEmpty]: Start isEmpty. Operand 6845 states and 10469 transitions. [2020-10-13 14:26:24,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 14:26:24,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:26:24,939 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] [2020-10-13 14:26:24,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:26:24,940 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:26:24,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:26:24,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1464631379, now seen corresponding path program 1 times [2020-10-13 14:26:24,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:26:24,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009315695] [2020-10-13 14:26:24,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:26:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:24,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:24,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:25,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:25,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:25,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:25,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:25,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:25,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:26,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:26,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:26,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:26,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:28,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:28,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:28,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:28,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:29,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:29,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:29,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:29,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 14:26:29,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:26:29,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:26:29,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:29,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:26:29,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:26:29,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 14:26:29,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:30,331 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:26:30,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:26:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:30,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:30,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:30,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:26:30,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:26:30,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:26:30,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:26:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:26:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:26:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:26:30,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009315695] [2020-10-13 14:26:30,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:26:30,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:26:30,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516832344] [2020-10-13 14:26:30,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:26:30,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:26:30,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:26:30,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:26:30,380 INFO L87 Difference]: Start difference. First operand 6845 states and 10469 transitions. Second operand 11 states. [2020-10-13 14:26:30,949 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 173 [2020-10-13 14:26:41,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:26:41,401 INFO L93 Difference]: Finished difference Result 34939 states and 53105 transitions. [2020-10-13 14:26:41,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 14:26:41,402 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-13 14:26:41,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:26:41,431 INFO L225 Difference]: With dead ends: 34939 [2020-10-13 14:26:41,431 INFO L226 Difference]: Without dead ends: 28521 [2020-10-13 14:26:41,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2020-10-13 14:26:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28521 states. [2020-10-13 14:26:43,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28521 to 6845. [2020-10-13 14:26:43,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6845 states. [2020-10-13 14:26:43,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6845 states to 6845 states and 10468 transitions. [2020-10-13 14:26:43,440 INFO L78 Accepts]: Start accepts. Automaton has 6845 states and 10468 transitions. Word has length 102 [2020-10-13 14:26:43,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:26:43,441 INFO L479 AbstractCegarLoop]: Abstraction has 6845 states and 10468 transitions. [2020-10-13 14:26:43,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:26:43,441 INFO L276 IsEmpty]: Start isEmpty. Operand 6845 states and 10468 transitions. [2020-10-13 14:26:43,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 14:26:43,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:26:43,443 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] [2020-10-13 14:26:43,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:26:43,443 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:26:43,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:26:43,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1474290498, now seen corresponding path program 1 times [2020-10-13 14:26:43,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:26:43,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079713120] [2020-10-13 14:26:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:26:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:43,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:43,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:43,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:44,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:47,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:47,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:47,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:47,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:48,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:48,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:48,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 14:26:48,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:26:48,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:26:48,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:48,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:26:48,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:26:48,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 14:26:48,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:48,786 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:26:48,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:26:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:48,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:48,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:48,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:26:48,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:26:48,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:26:48,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:26:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:26:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:26:48,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:48,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:26:48,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079713120] [2020-10-13 14:26:48,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:26:48,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:26:48,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795271553] [2020-10-13 14:26:48,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:26:48,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:26:48,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:26:48,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:26:48,820 INFO L87 Difference]: Start difference. First operand 6845 states and 10468 transitions. Second operand 8 states. [2020-10-13 14:26:49,031 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 14:26:52,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:26:52,234 INFO L93 Difference]: Finished difference Result 13308 states and 20398 transitions. [2020-10-13 14:26:52,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 14:26:52,235 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2020-10-13 14:26:52,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:26:52,242 INFO L225 Difference]: With dead ends: 13308 [2020-10-13 14:26:52,242 INFO L226 Difference]: Without dead ends: 6746 [2020-10-13 14:26:52,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-13 14:26:52,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6746 states. [2020-10-13 14:26:54,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6746 to 6744. [2020-10-13 14:26:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6744 states. [2020-10-13 14:26:54,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 10315 transitions. [2020-10-13 14:26:54,275 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 10315 transitions. Word has length 102 [2020-10-13 14:26:54,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:26:54,275 INFO L479 AbstractCegarLoop]: Abstraction has 6744 states and 10315 transitions. [2020-10-13 14:26:54,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:26:54,275 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 10315 transitions. [2020-10-13 14:26:54,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 14:26:54,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:26:54,276 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] [2020-10-13 14:26:54,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:26:54,277 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:26:54,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:26:54,277 INFO L82 PathProgramCache]: Analyzing trace with hash -903208171, now seen corresponding path program 1 times [2020-10-13 14:26:54,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:26:54,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625644388] [2020-10-13 14:26:54,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:26:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:54,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:54,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:54,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:54,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:55,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:55,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:55,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:56,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:56,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:56,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:59,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:59,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 14:26:59,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:26:59,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:26:59,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:26:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:26:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 14:26:59,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:59,720 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:26:59,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:26:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:59,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:59,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:59,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:26:59,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:26:59,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:26:59,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:26:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:26:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:26:59,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:26:59,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625644388] [2020-10-13 14:26:59,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:26:59,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:26:59,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975092200] [2020-10-13 14:26:59,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:26:59,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:26:59,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:26:59,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:26:59,765 INFO L87 Difference]: Start difference. First operand 6744 states and 10315 transitions. Second operand 9 states. [2020-10-13 14:26:59,970 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-13 14:27:02,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:27:02,945 INFO L93 Difference]: Finished difference Result 13116 states and 20109 transitions. [2020-10-13 14:27:02,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:27:02,947 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-13 14:27:02,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:27:02,953 INFO L225 Difference]: With dead ends: 13116 [2020-10-13 14:27:02,954 INFO L226 Difference]: Without dead ends: 6645 [2020-10-13 14:27:02,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:27:02,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6645 states. [2020-10-13 14:27:04,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6645 to 6643. [2020-10-13 14:27:04,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6643 states. [2020-10-13 14:27:04,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6643 states to 6643 states and 10163 transitions. [2020-10-13 14:27:04,964 INFO L78 Accepts]: Start accepts. Automaton has 6643 states and 10163 transitions. Word has length 103 [2020-10-13 14:27:04,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:27:04,964 INFO L479 AbstractCegarLoop]: Abstraction has 6643 states and 10163 transitions. [2020-10-13 14:27:04,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:27:04,965 INFO L276 IsEmpty]: Start isEmpty. Operand 6643 states and 10163 transitions. [2020-10-13 14:27:04,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 14:27:04,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:27:04,966 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] [2020-10-13 14:27:04,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 14:27:04,966 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:27:04,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:27:04,967 INFO L82 PathProgramCache]: Analyzing trace with hash -200058892, now seen corresponding path program 1 times [2020-10-13 14:27:04,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:27:04,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326156901] [2020-10-13 14:27:04,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:27:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:04,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:05,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:05,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:05,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:06,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:06,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:06,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:06,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:06,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:06,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:07,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:07,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:07,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:08,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:09,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:09,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 14:27:09,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:27:09,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:27:09,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:27:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:27:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 14:27:09,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:27:10,214 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 29 [2020-10-13 14:27:10,439 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 14:27:10,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:27:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:10,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:10,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:10,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:27:10,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:27:10,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:27:10,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:10,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:27:10,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:27:10,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:27:10,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:27:10,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:27:10,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326156901] [2020-10-13 14:27:10,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:27:10,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:27:10,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638235919] [2020-10-13 14:27:10,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:27:10,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:27:10,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:27:10,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:27:10,468 INFO L87 Difference]: Start difference. First operand 6643 states and 10163 transitions. Second operand 12 states. [2020-10-13 14:27:10,724 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-13 14:27:22,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:27:22,976 INFO L93 Difference]: Finished difference Result 34786 states and 52917 transitions. [2020-10-13 14:27:22,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 14:27:22,977 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2020-10-13 14:27:22,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:27:23,002 INFO L225 Difference]: With dead ends: 34786 [2020-10-13 14:27:23,002 INFO L226 Difference]: Without dead ends: 28373 [2020-10-13 14:27:23,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=188, Invalid=742, Unknown=0, NotChecked=0, Total=930 [2020-10-13 14:27:23,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28373 states. [2020-10-13 14:27:25,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28373 to 6643. [2020-10-13 14:27:25,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6643 states. [2020-10-13 14:27:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6643 states to 6643 states and 10162 transitions. [2020-10-13 14:27:25,263 INFO L78 Accepts]: Start accepts. Automaton has 6643 states and 10162 transitions. Word has length 103 [2020-10-13 14:27:25,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:27:25,264 INFO L479 AbstractCegarLoop]: Abstraction has 6643 states and 10162 transitions. [2020-10-13 14:27:25,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:27:25,264 INFO L276 IsEmpty]: Start isEmpty. Operand 6643 states and 10162 transitions. [2020-10-13 14:27:25,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 14:27:25,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:27:25,265 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] [2020-10-13 14:27:25,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 14:27:25,265 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:27:25,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:27:25,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1247092958, now seen corresponding path program 1 times [2020-10-13 14:27:25,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:27:25,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307751056] [2020-10-13 14:27:25,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:27:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:25,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:25,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:25,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:25,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:25,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:25,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:25,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:26,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking...