/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:55:13,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:55:13,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:55:13,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:55:13,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:55:13,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:55:13,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:55:13,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:55:13,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:55:13,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:55:13,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:55:13,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:55:13,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:55:13,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:55:13,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:55:13,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:55:13,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:55:13,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:55:13,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:55:13,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:55:13,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:55:13,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:55:13,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:55:13,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:55:13,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:55:13,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:55:13,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:55:13,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:55:13,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:55:13,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:55:13,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:55:13,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:55:13,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:55:13,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:55:13,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:55:13,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:55:13,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:55:13,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:55:13,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:55:13,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:55:13,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:55:13,138 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 [2020-10-15 02:55:13,176 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:55:13,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:55:13,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:55:13,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:55:13,178 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:55:13,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:55:13,179 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:55:13,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:55:13,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:55:13,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:55:13,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:55:13,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:55:13,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:55:13,181 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:55:13,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:55:13,182 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:55:13,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:55:13,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:55:13,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:55:13,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:55:13,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:55:13,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:55:13,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:55:13,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:55:13,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:55:13,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:55:13,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:55:13,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:55:13,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:55:13,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:55:13,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:55:13,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:55:13,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:55:13,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:55:13,540 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:55:13,541 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-15 02:55:13,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f95bb32b8/e0c0c7261b8f456588cd9b70102a1821/FLAGce4a201d1 [2020-10-15 02:55:14,168 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:55:14,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-15 02:55:14,179 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f95bb32b8/e0c0c7261b8f456588cd9b70102a1821/FLAGce4a201d1 [2020-10-15 02:55:14,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f95bb32b8/e0c0c7261b8f456588cd9b70102a1821 [2020-10-15 02:55:14,452 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:55:14,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:55:14,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:55:14,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:55:14,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:55:14,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:55:14" (1/1) ... [2020-10-15 02:55:14,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d77a43a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:14, skipping insertion in model container [2020-10-15 02:55:14,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:55:14" (1/1) ... [2020-10-15 02:55:14,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:55:14,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:55:14,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:55:14,934 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:55:15,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:55:15,037 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:55:15,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15 WrapperNode [2020-10-15 02:55:15,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:55:15,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:55:15,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:55:15,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:55:15,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (1/1) ... [2020-10-15 02:55:15,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (1/1) ... [2020-10-15 02:55:15,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (1/1) ... [2020-10-15 02:55:15,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (1/1) ... [2020-10-15 02:55:15,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (1/1) ... [2020-10-15 02:55:15,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (1/1) ... [2020-10-15 02:55:15,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (1/1) ... [2020-10-15 02:55:15,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:55:15,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:55:15,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:55:15,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:55:15,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (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 [2020-10-15 02:55:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:55:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:55:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 02:55:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:55:15,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:55:15,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 02:55:15,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 02:55:15,174 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 02:55:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 02:55:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 02:55:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 02:55:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 02:55:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 02:55:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 02:55:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 02:55:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 02:55:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 02:55:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:55:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:55:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:55:15,940 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:55:15,941 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 02:55:15,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:55:15 BoogieIcfgContainer [2020-10-15 02:55:15,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:55:15,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:55:15,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:55:15,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:55:15,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:55:14" (1/3) ... [2020-10-15 02:55:15,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3611e005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:55:15, skipping insertion in model container [2020-10-15 02:55:15,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (2/3) ... [2020-10-15 02:55:15,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3611e005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:55:15, skipping insertion in model container [2020-10-15 02:55:15,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:55:15" (3/3) ... [2020-10-15 02:55:15,959 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-15 02:55:15,971 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:55:15,990 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:55:16,006 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:55:16,042 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:55:16,042 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:55:16,042 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:55:16,043 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:55:16,043 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:55:16,043 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:55:16,043 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:55:16,043 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:55:16,070 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states. [2020-10-15 02:55:16,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 02:55:16,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:16,083 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] [2020-10-15 02:55:16,084 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:16,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:16,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1817058804, now seen corresponding path program 1 times [2020-10-15 02:55:16,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:16,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033274125] [2020-10-15 02:55:16,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:16,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:16,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:16,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:17,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:18,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:18,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 02:55:18,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:55:18,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2265 [2020-10-15 02:55:18,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:18,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:18,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:55:18,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 02:55:18,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 02:55:18,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 02:55:19,075 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:55:19,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:19,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:19,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:19,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:19,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:19,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 02:55:19,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:19,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:19,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:55:19,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033274125] [2020-10-15 02:55:19,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:19,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 02:55:19,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750970524] [2020-10-15 02:55:19,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 02:55:19,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:19,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 02:55:19,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:55:19,154 INFO L87 Difference]: Start difference. First operand 140 states. Second operand 4 states. [2020-10-15 02:55:19,408 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-15 02:55:20,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:20,307 INFO L93 Difference]: Finished difference Result 297 states and 502 transitions. [2020-10-15 02:55:20,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:20,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-15 02:55:20,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:20,326 INFO L225 Difference]: With dead ends: 297 [2020-10-15 02:55:20,326 INFO L226 Difference]: Without dead ends: 207 [2020-10-15 02:55:20,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:20,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-15 02:55:20,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-10-15 02:55:20,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-15 02:55:20,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 325 transitions. [2020-10-15 02:55:20,405 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 325 transitions. Word has length 61 [2020-10-15 02:55:20,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:20,406 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 325 transitions. [2020-10-15 02:55:20,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 02:55:20,407 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 325 transitions. [2020-10-15 02:55:20,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 02:55:20,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:20,410 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] [2020-10-15 02:55:20,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:55:20,411 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:20,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:20,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1189934876, now seen corresponding path program 1 times [2020-10-15 02:55:20,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:20,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344480731] [2020-10-15 02:55:20,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:20,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:20,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:20,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:20,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:20,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:22,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:25,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:25,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 02:55:25,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:55:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 02:55:25,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:25,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 02:55:25,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:25,717 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:55:25,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:25,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:25,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:25,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:25,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:25,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:55:25,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:25,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:25,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:25,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:25,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:25,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:55:25,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344480731] [2020-10-15 02:55:25,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:25,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:25,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105361663] [2020-10-15 02:55:25,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:25,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:25,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:25,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:25,761 INFO L87 Difference]: Start difference. First operand 205 states and 325 transitions. Second operand 5 states. [2020-10-15 02:55:26,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:26,473 INFO L93 Difference]: Finished difference Result 569 states and 903 transitions. [2020-10-15 02:55:26,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:26,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-15 02:55:26,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:26,477 INFO L225 Difference]: With dead ends: 569 [2020-10-15 02:55:26,478 INFO L226 Difference]: Without dead ends: 389 [2020-10-15 02:55:26,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:55:26,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-15 02:55:26,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 387. [2020-10-15 02:55:26,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-10-15 02:55:26,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 612 transitions. [2020-10-15 02:55:26,546 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 612 transitions. Word has length 63 [2020-10-15 02:55:26,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:26,546 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 612 transitions. [2020-10-15 02:55:26,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:26,547 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 612 transitions. [2020-10-15 02:55:26,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 02:55:26,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:26,554 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] [2020-10-15 02:55:26,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:55:26,554 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:26,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:26,554 INFO L82 PathProgramCache]: Analyzing trace with hash 2127268679, now seen corresponding path program 1 times [2020-10-15 02:55:26,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:26,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984367036] [2020-10-15 02:55:26,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:26,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:26,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:26,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:26,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:27,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:29,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:29,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 02:55:29,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:55:29,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3391 [2020-10-15 02:55:29,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:29,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:29,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:29,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:29,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 02:55:29,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:30,260 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:55:30,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:30,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:30,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:30,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:30,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:30,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 02:55:30,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:30,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:30,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:30,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:30,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:30,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:55:30,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984367036] [2020-10-15 02:55:30,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:30,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:30,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479011322] [2020-10-15 02:55:30,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:30,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:30,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:30,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:30,327 INFO L87 Difference]: Start difference. First operand 387 states and 612 transitions. Second operand 5 states. [2020-10-15 02:55:31,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:31,485 INFO L93 Difference]: Finished difference Result 1018 states and 1642 transitions. [2020-10-15 02:55:31,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:31,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-15 02:55:31,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:31,493 INFO L225 Difference]: With dead ends: 1018 [2020-10-15 02:55:31,493 INFO L226 Difference]: Without dead ends: 735 [2020-10-15 02:55:31,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:55:31,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2020-10-15 02:55:31,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 733. [2020-10-15 02:55:31,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-10-15 02:55:31,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1153 transitions. [2020-10-15 02:55:31,579 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1153 transitions. Word has length 63 [2020-10-15 02:55:31,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:31,580 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 1153 transitions. [2020-10-15 02:55:31,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:31,580 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1153 transitions. [2020-10-15 02:55:31,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 02:55:31,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:31,589 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] [2020-10-15 02:55:31,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:55:31,589 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:31,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:31,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1572095812, now seen corresponding path program 1 times [2020-10-15 02:55:31,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:31,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654955331] [2020-10-15 02:55:31,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:31,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:31,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:31,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:32,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:32,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:32,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:34,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:34,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:55:34,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:55:34,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2989 [2020-10-15 02:55:34,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:34,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:34,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 02:55:34,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-15 02:55:34,907 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:55:34,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:34,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:34,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:34,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:34,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:34,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 02:55:34,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:34,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:34,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:34,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:34,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:34,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:55:34,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654955331] [2020-10-15 02:55:34,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:34,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:34,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099515132] [2020-10-15 02:55:34,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:34,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:34,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:34,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:34,962 INFO L87 Difference]: Start difference. First operand 733 states and 1153 transitions. Second operand 5 states. [2020-10-15 02:55:35,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:35,784 INFO L93 Difference]: Finished difference Result 1997 states and 3165 transitions. [2020-10-15 02:55:35,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:35,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-15 02:55:35,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:35,793 INFO L225 Difference]: With dead ends: 1997 [2020-10-15 02:55:35,794 INFO L226 Difference]: Without dead ends: 1391 [2020-10-15 02:55:35,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:55:35,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-10-15 02:55:35,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1389. [2020-10-15 02:55:35,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1389 states. [2020-10-15 02:55:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 2165 transitions. [2020-10-15 02:55:35,919 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 2165 transitions. Word has length 64 [2020-10-15 02:55:35,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:35,920 INFO L479 AbstractCegarLoop]: Abstraction has 1389 states and 2165 transitions. [2020-10-15 02:55:35,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:35,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 2165 transitions. [2020-10-15 02:55:35,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 02:55:35,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:35,925 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] [2020-10-15 02:55:35,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:55:35,925 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:35,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:35,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1116403919, now seen corresponding path program 1 times [2020-10-15 02:55:35,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:35,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525112781] [2020-10-15 02:55:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:35,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:36,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:36,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:36,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:36,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:38,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:38,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:55:38,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:55:38,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2719 [2020-10-15 02:55:38,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:38,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:38,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:38,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 02:55:38,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:38,972 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:55:38,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:38,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:38,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:38,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:38,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:38,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:55:38,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:38,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:38,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:38,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:38,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:38,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:55:39,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525112781] [2020-10-15 02:55:39,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:39,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:39,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611349026] [2020-10-15 02:55:39,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:39,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:39,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:39,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:39,015 INFO L87 Difference]: Start difference. First operand 1389 states and 2165 transitions. Second operand 5 states. [2020-10-15 02:55:40,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:40,188 INFO L93 Difference]: Finished difference Result 3842 states and 6050 transitions. [2020-10-15 02:55:40,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:40,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-15 02:55:40,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:40,204 INFO L225 Difference]: With dead ends: 3842 [2020-10-15 02:55:40,205 INFO L226 Difference]: Without dead ends: 2680 [2020-10-15 02:55:40,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:55:40,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2020-10-15 02:55:40,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2678. [2020-10-15 02:55:40,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2678 states. [2020-10-15 02:55:40,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 4148 transitions. [2020-10-15 02:55:40,480 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 4148 transitions. Word has length 64 [2020-10-15 02:55:40,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:40,481 INFO L479 AbstractCegarLoop]: Abstraction has 2678 states and 4148 transitions. [2020-10-15 02:55:40,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:40,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 4148 transitions. [2020-10-15 02:55:40,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 02:55:40,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:40,490 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] [2020-10-15 02:55:40,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:55:40,490 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:40,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:40,490 INFO L82 PathProgramCache]: Analyzing trace with hash -7270665, now seen corresponding path program 1 times [2020-10-15 02:55:40,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:40,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241834288] [2020-10-15 02:55:40,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:40,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:40,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:40,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:40,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:41,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:41,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:43,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:43,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 02:55:43,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:55:43,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3227 [2020-10-15 02:55:43,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:43,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:55:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 02:55:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:55:43,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:55:43,958 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:55:43,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:43,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:43,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:43,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:43,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:43,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:55:43,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:43,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:43,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:55:43,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241834288] [2020-10-15 02:55:43,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:43,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 02:55:43,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79620573] [2020-10-15 02:55:43,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 02:55:43,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:43,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 02:55:43,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:55:43,989 INFO L87 Difference]: Start difference. First operand 2678 states and 4148 transitions. Second operand 4 states. [2020-10-15 02:55:44,216 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-15 02:55:45,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:45,523 INFO L93 Difference]: Finished difference Result 6506 states and 10534 transitions. [2020-10-15 02:55:45,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:45,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-15 02:55:45,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:45,548 INFO L225 Difference]: With dead ends: 6506 [2020-10-15 02:55:45,549 INFO L226 Difference]: Without dead ends: 4488 [2020-10-15 02:55:45,557 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 [2020-10-15 02:55:45,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4488 states. [2020-10-15 02:55:45,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4488 to 4486. [2020-10-15 02:55:45,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4486 states. [2020-10-15 02:55:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 7124 transitions. [2020-10-15 02:55:45,985 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 7124 transitions. Word has length 65 [2020-10-15 02:55:45,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:45,986 INFO L479 AbstractCegarLoop]: Abstraction has 4486 states and 7124 transitions. [2020-10-15 02:55:45,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 02:55:45,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 7124 transitions. [2020-10-15 02:55:45,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 02:55:45,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:45,992 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] [2020-10-15 02:55:45,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:55:45,993 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:45,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:45,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1994722692, now seen corresponding path program 1 times [2020-10-15 02:55:45,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:45,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444945698] [2020-10-15 02:55:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:46,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:46,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:46,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:46,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:46,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:47,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:48,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:51,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:51,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 02:55:51,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 02:55:51,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:55:51,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:51,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 02:55:51,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:55:51,289 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:55:51,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:51,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:51,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:51,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:51,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:51,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:55:51,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:51,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:51,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:51,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:51,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:51,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:55:51,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444945698] [2020-10-15 02:55:51,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:51,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:51,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733901514] [2020-10-15 02:55:51,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:51,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:51,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:51,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:51,344 INFO L87 Difference]: Start difference. First operand 4486 states and 7124 transitions. Second operand 5 states. [2020-10-15 02:55:52,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:52,970 INFO L93 Difference]: Finished difference Result 12366 states and 19908 transitions. [2020-10-15 02:55:52,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:52,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-15 02:55:52,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:53,020 INFO L225 Difference]: With dead ends: 12366 [2020-10-15 02:55:53,020 INFO L226 Difference]: Without dead ends: 8540 [2020-10-15 02:55:53,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:55:53,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8540 states. [2020-10-15 02:55:53,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8540 to 8538. [2020-10-15 02:55:53,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8538 states. [2020-10-15 02:55:53,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8538 states to 8538 states and 13426 transitions. [2020-10-15 02:55:53,994 INFO L78 Accepts]: Start accepts. Automaton has 8538 states and 13426 transitions. Word has length 67 [2020-10-15 02:55:53,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:53,994 INFO L479 AbstractCegarLoop]: Abstraction has 8538 states and 13426 transitions. [2020-10-15 02:55:53,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:53,994 INFO L276 IsEmpty]: Start isEmpty. Operand 8538 states and 13426 transitions. [2020-10-15 02:55:54,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 02:55:54,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:54,006 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] [2020-10-15 02:55:54,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:55:54,007 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:54,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:54,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1879848622, now seen corresponding path program 1 times [2020-10-15 02:55:54,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:54,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566709805] [2020-10-15 02:55:54,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:54,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:54,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:54,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:54,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:54,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:55,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:59,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:59,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 02:55:59,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:55:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 02:55:59,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:59,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 02:55:59,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:55:59,275 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:55:59,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:59,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:59,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:59,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:59,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:59,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:55:59,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:59,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:59,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:59,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:59,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:59,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:55:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:55:59,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566709805] [2020-10-15 02:55:59,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:59,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:59,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237995722] [2020-10-15 02:55:59,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:59,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:59,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:59,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:59,314 INFO L87 Difference]: Start difference. First operand 8538 states and 13426 transitions. Second operand 5 states. [2020-10-15 02:56:01,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:01,231 INFO L93 Difference]: Finished difference Result 24276 states and 38451 transitions. [2020-10-15 02:56:01,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:01,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-15 02:56:01,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:01,297 INFO L225 Difference]: With dead ends: 24276 [2020-10-15 02:56:01,298 INFO L226 Difference]: Without dead ends: 16396 [2020-10-15 02:56:01,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:01,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16396 states. [2020-10-15 02:56:02,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16396 to 16394. [2020-10-15 02:56:02,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16394 states. [2020-10-15 02:56:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16394 states to 16394 states and 25595 transitions. [2020-10-15 02:56:02,697 INFO L78 Accepts]: Start accepts. Automaton has 16394 states and 25595 transitions. Word has length 67 [2020-10-15 02:56:02,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:02,697 INFO L479 AbstractCegarLoop]: Abstraction has 16394 states and 25595 transitions. [2020-10-15 02:56:02,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 16394 states and 25595 transitions. [2020-10-15 02:56:02,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 02:56:02,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:02,714 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] [2020-10-15 02:56:02,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 02:56:02,715 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:02,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:02,715 INFO L82 PathProgramCache]: Analyzing trace with hash 824660448, now seen corresponding path program 1 times [2020-10-15 02:56:02,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:02,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763240227] [2020-10-15 02:56:02,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:02,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:02,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:02,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:02,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:02,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:02,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:06,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:07,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:07,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 02:56:07,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:56:07,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:56:07,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:07,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:07,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:56:07,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 02:56:07,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 02:56:07,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:07,911 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:56:07,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:07,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:07,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:07,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:07,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:07,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:56:07,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:07,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:07,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:07,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:07,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:07,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:07,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:07,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763240227] [2020-10-15 02:56:07,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:07,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 02:56:07,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29143378] [2020-10-15 02:56:07,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 02:56:07,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:07,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 02:56:07,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:56:07,941 INFO L87 Difference]: Start difference. First operand 16394 states and 25595 transitions. Second operand 4 states. [2020-10-15 02:56:08,124 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-15 02:56:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:10,941 INFO L93 Difference]: Finished difference Result 42510 states and 68093 transitions. [2020-10-15 02:56:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:10,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-15 02:56:10,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:11,036 INFO L225 Difference]: With dead ends: 42510 [2020-10-15 02:56:11,036 INFO L226 Difference]: Without dead ends: 28428 [2020-10-15 02:56:11,070 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 [2020-10-15 02:56:11,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28428 states. [2020-10-15 02:56:14,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28428 to 28426. [2020-10-15 02:56:14,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28426 states. [2020-10-15 02:56:14,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28426 states to 28426 states and 43771 transitions. [2020-10-15 02:56:14,153 INFO L78 Accepts]: Start accepts. Automaton has 28426 states and 43771 transitions. Word has length 68 [2020-10-15 02:56:14,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:14,153 INFO L479 AbstractCegarLoop]: Abstraction has 28426 states and 43771 transitions. [2020-10-15 02:56:14,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 02:56:14,153 INFO L276 IsEmpty]: Start isEmpty. Operand 28426 states and 43771 transitions. [2020-10-15 02:56:14,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 02:56:14,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:14,180 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] [2020-10-15 02:56:14,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 02:56:14,180 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:14,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:14,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1597765702, now seen corresponding path program 1 times [2020-10-15 02:56:14,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:14,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750199183] [2020-10-15 02:56:14,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:14,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:14,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:14,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:14,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:14,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:14,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:16,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:19,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:19,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 02:56:19,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:56:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 02:56:19,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:19,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 02:56:19,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 02:56:19,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:19,445 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:56:19,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:19,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:19,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:19,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:19,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:19,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:56:19,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:19,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:19,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:19,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:19,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:19,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:19,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750199183] [2020-10-15 02:56:19,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:19,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:19,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108730245] [2020-10-15 02:56:19,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:19,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:19,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:19,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:19,475 INFO L87 Difference]: Start difference. First operand 28426 states and 43771 transitions. Second operand 5 states. [2020-10-15 02:56:19,664 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:56:23,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:23,641 INFO L93 Difference]: Finished difference Result 55824 states and 88318 transitions. [2020-10-15 02:56:23,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:56:23,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-15 02:56:23,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:23,729 INFO L225 Difference]: With dead ends: 55824 [2020-10-15 02:56:23,729 INFO L226 Difference]: Without dead ends: 41742 [2020-10-15 02:56:23,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:23,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41742 states. [2020-10-15 02:56:27,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41742 to 41738. [2020-10-15 02:56:27,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41738 states. [2020-10-15 02:56:27,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41738 states to 41738 states and 63739 transitions. [2020-10-15 02:56:27,088 INFO L78 Accepts]: Start accepts. Automaton has 41738 states and 63739 transitions. Word has length 71 [2020-10-15 02:56:27,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:27,088 INFO L479 AbstractCegarLoop]: Abstraction has 41738 states and 63739 transitions. [2020-10-15 02:56:27,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:27,089 INFO L276 IsEmpty]: Start isEmpty. Operand 41738 states and 63739 transitions. [2020-10-15 02:56:27,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 02:56:27,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:27,109 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] [2020-10-15 02:56:27,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 02:56:27,110 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:27,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:27,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1666349208, now seen corresponding path program 1 times [2020-10-15 02:56:27,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:27,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662650669] [2020-10-15 02:56:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:27,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:27,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:27,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:27,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:27,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:28,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:30,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:32,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:32,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 02:56:32,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:56:32,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 02:56:32,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:32,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:32,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:32,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 02:56:32,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 02:56:32,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:32,324 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:56:32,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:32,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:32,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:32,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:32,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:32,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:56:32,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:32,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:32,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:32,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662650669] [2020-10-15 02:56:32,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:32,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:32,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695266392] [2020-10-15 02:56:32,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:32,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:32,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:32,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:32,347 INFO L87 Difference]: Start difference. First operand 41738 states and 63739 transitions. Second operand 5 states. [2020-10-15 02:56:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:35,712 INFO L93 Difference]: Finished difference Result 68811 states and 104746 transitions. [2020-10-15 02:56:35,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:35,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-15 02:56:35,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:35,759 INFO L225 Difference]: With dead ends: 68811 [2020-10-15 02:56:35,760 INFO L226 Difference]: Without dead ends: 27177 [2020-10-15 02:56:35,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:35,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27177 states. [2020-10-15 02:56:38,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27177 to 27177. [2020-10-15 02:56:38,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27177 states. [2020-10-15 02:56:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27177 states to 27177 states and 41155 transitions. [2020-10-15 02:56:38,204 INFO L78 Accepts]: Start accepts. Automaton has 27177 states and 41155 transitions. Word has length 71 [2020-10-15 02:56:38,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:38,204 INFO L479 AbstractCegarLoop]: Abstraction has 27177 states and 41155 transitions. [2020-10-15 02:56:38,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:38,204 INFO L276 IsEmpty]: Start isEmpty. Operand 27177 states and 41155 transitions. [2020-10-15 02:56:38,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 02:56:38,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:38,215 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] [2020-10-15 02:56:38,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 02:56:38,216 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:38,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:38,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1198664400, now seen corresponding path program 1 times [2020-10-15 02:56:38,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:38,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852089562] [2020-10-15 02:56:38,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:38,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:38,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:38,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:38,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:38,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:41,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:43,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:43,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 02:56:43,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:56:43,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 02:56:43,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:43,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:56:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:56:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 02:56:43,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:43,464 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:56:43,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:43,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:43,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:43,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:43,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:43,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:56:43,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:43,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:43,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:56:43,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:43,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:56:43,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:43,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852089562] [2020-10-15 02:56:43,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:43,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 02:56:43,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306598604] [2020-10-15 02:56:43,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 02:56:43,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:43,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 02:56:43,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:56:43,502 INFO L87 Difference]: Start difference. First operand 27177 states and 41155 transitions. Second operand 8 states. [2020-10-15 02:56:43,710 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 02:56:48,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:48,545 INFO L93 Difference]: Finished difference Result 66073 states and 100429 transitions. [2020-10-15 02:56:48,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 02:56:48,546 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-15 02:56:48,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:48,614 INFO L225 Difference]: With dead ends: 66073 [2020-10-15 02:56:48,615 INFO L226 Difference]: Without dead ends: 43723 [2020-10-15 02:56:48,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:56:48,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43723 states. [2020-10-15 02:56:51,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43723 to 28105. [2020-10-15 02:56:51,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28105 states. [2020-10-15 02:56:51,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28105 states to 28105 states and 41995 transitions. [2020-10-15 02:56:51,311 INFO L78 Accepts]: Start accepts. Automaton has 28105 states and 41995 transitions. Word has length 72 [2020-10-15 02:56:51,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:51,311 INFO L479 AbstractCegarLoop]: Abstraction has 28105 states and 41995 transitions. [2020-10-15 02:56:51,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 02:56:51,312 INFO L276 IsEmpty]: Start isEmpty. Operand 28105 states and 41995 transitions. [2020-10-15 02:56:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 02:56:51,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:51,322 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] [2020-10-15 02:56:51,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 02:56:51,322 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:51,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:51,323 INFO L82 PathProgramCache]: Analyzing trace with hash -2135368009, now seen corresponding path program 1 times [2020-10-15 02:56:51,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:51,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749187115] [2020-10-15 02:56:51,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:51,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:51,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:51,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:51,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:52,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:53,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:53,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 02:56:53,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:56:53,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2626 [2020-10-15 02:56:53,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:53,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:53,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:56:53,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 02:56:53,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 02:56:53,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:54,155 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:56:54,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:54,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:54,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:54,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:54,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:54,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:56:54,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:54,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:54,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:54,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:54,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:54,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:54,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749187115] [2020-10-15 02:56:54,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:54,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 02:56:54,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254149270] [2020-10-15 02:56:54,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:56:54,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:54,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:56:54,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:54,177 INFO L87 Difference]: Start difference. First operand 28105 states and 41995 transitions. Second operand 6 states. [2020-10-15 02:56:54,377 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-15 02:57:04,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:04,579 INFO L93 Difference]: Finished difference Result 124869 states and 187921 transitions. [2020-10-15 02:57:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 02:57:04,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-15 02:57:04,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:04,726 INFO L225 Difference]: With dead ends: 124869 [2020-10-15 02:57:04,726 INFO L226 Difference]: Without dead ends: 99147 [2020-10-15 02:57:04,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:57:04,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99147 states. [2020-10-15 02:57:14,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99147 to 85937. [2020-10-15 02:57:14,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85937 states. [2020-10-15 02:57:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85937 states to 85937 states and 127755 transitions. [2020-10-15 02:57:14,674 INFO L78 Accepts]: Start accepts. Automaton has 85937 states and 127755 transitions. Word has length 72 [2020-10-15 02:57:14,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:14,674 INFO L479 AbstractCegarLoop]: Abstraction has 85937 states and 127755 transitions. [2020-10-15 02:57:14,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:57:14,675 INFO L276 IsEmpty]: Start isEmpty. Operand 85937 states and 127755 transitions. [2020-10-15 02:57:14,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 02:57:14,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:14,689 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] [2020-10-15 02:57:14,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 02:57:14,689 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:14,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:14,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1298280738, now seen corresponding path program 1 times [2020-10-15 02:57:14,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:14,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655675356] [2020-10-15 02:57:14,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:14,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:14,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:14,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:14,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:14,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:16,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:19,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:19,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 02:57:19,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:57:19,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 02:57:19,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:19,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:19,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:57:19,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 02:57:19,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 02:57:19,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:19,902 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:57:19,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:19,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:19,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:19,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:19,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:19,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:57:19,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:19,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:19,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655675356] [2020-10-15 02:57:19,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:19,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 02:57:19,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569021940] [2020-10-15 02:57:19,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:57:19,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:19,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:57:19,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:19,926 INFO L87 Difference]: Start difference. First operand 85937 states and 127755 transitions. Second operand 6 states. [2020-10-15 02:57:20,134 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 02:57:39,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:39,782 INFO L93 Difference]: Finished difference Result 262617 states and 395685 transitions. [2020-10-15 02:57:39,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 02:57:39,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-15 02:57:39,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:40,077 INFO L225 Difference]: With dead ends: 262617 [2020-10-15 02:57:40,077 INFO L226 Difference]: Without dead ends: 179215 [2020-10-15 02:57:40,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:57:40,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179215 states. [2020-10-15 02:57:50,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179215 to 100497. [2020-10-15 02:57:50,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100497 states. [2020-10-15 02:57:50,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100497 states to 100497 states and 150855 transitions. [2020-10-15 02:57:50,809 INFO L78 Accepts]: Start accepts. Automaton has 100497 states and 150855 transitions. Word has length 72 [2020-10-15 02:57:50,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:50,809 INFO L479 AbstractCegarLoop]: Abstraction has 100497 states and 150855 transitions. [2020-10-15 02:57:50,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:57:50,809 INFO L276 IsEmpty]: Start isEmpty. Operand 100497 states and 150855 transitions. [2020-10-15 02:57:50,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 02:57:50,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:50,824 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] [2020-10-15 02:57:50,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 02:57:50,825 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:50,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:50,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1833509303, now seen corresponding path program 1 times [2020-10-15 02:57:50,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:50,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530094625] [2020-10-15 02:57:50,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:50,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:50,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:50,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:50,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:51,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:51,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:55,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:55,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 02:57:55,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:57:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 02:57:55,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:55,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:55,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 02:57:55,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 02:57:55,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:56,034 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:57:56,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:56,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:56,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:56,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:56,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:56,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:57:56,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:56,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:56,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:56,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:56,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:56,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:56,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530094625] [2020-10-15 02:57:56,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:56,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:56,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914186173] [2020-10-15 02:57:56,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:56,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:56,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:56,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:56,056 INFO L87 Difference]: Start difference. First operand 100497 states and 150855 transitions. Second operand 5 states. [2020-10-15 02:57:56,258 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-15 02:58:22,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:22,178 INFO L93 Difference]: Finished difference Result 349465 states and 525399 transitions. [2020-10-15 02:58:22,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:58:22,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-15 02:58:22,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:22,629 INFO L225 Difference]: With dead ends: 349465 [2020-10-15 02:58:22,629 INFO L226 Difference]: Without dead ends: 251503 [2020-10-15 02:58:22,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:58:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251503 states. [2020-10-15 02:58:52,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251503 to 248817. [2020-10-15 02:58:52,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248817 states. [2020-10-15 02:58:52,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248817 states to 248817 states and 370455 transitions. [2020-10-15 02:58:52,501 INFO L78 Accepts]: Start accepts. Automaton has 248817 states and 370455 transitions. Word has length 73 [2020-10-15 02:58:52,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:52,501 INFO L479 AbstractCegarLoop]: Abstraction has 248817 states and 370455 transitions. [2020-10-15 02:58:52,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:58:52,502 INFO L276 IsEmpty]: Start isEmpty. Operand 248817 states and 370455 transitions. [2020-10-15 02:58:52,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 02:58:52,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:52,517 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] [2020-10-15 02:58:52,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 02:58:52,517 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:52,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:52,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1333251734, now seen corresponding path program 1 times [2020-10-15 02:58:52,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:52,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108350554] [2020-10-15 02:58:52,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:52,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:52,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:52,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:52,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:52,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking...