/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_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:01:52,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:01:52,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:01:52,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:01:52,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:01:52,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:01:52,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:01:52,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:01:52,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:01:52,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:01:52,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:01:52,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:01:52,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:01:52,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:01:52,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:01:52,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:01:52,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:01:52,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:01:52,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:01:52,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:01:52,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:01:52,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:01:52,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:01:52,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:01:52,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:01:52,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:01:52,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:01:52,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:01:52,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:01:52,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:01:52,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:01:52,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:01:52,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:01:52,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:01:52,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:01:52,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:01:52,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:01:52,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:01:52,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:01:52,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:01:52,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:01:52,169 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 04:01:52,211 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:01:52,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:01:52,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:01:52,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:01:52,214 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:01:52,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:01:52,215 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:01:52,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:01:52,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:01:52,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:01:52,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:01:52,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:01:52,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:01:52,218 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:01:52,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:01:52,218 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:01:52,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:01:52,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:01:52,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:01:52,219 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:01:52,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:01:52,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:01:52,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:01:52,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:01:52,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:01:52,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:01:52,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:01:52,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:01:52,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:01:52,221 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 04:01:52,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:01:52,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:01:52,536 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:01:52,537 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:01:52,538 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:01:52,538 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-15 04:01:52,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a75fef2f/2605ecd3429d4026aeae02f5d51ef69c/FLAG6a92bb381 [2020-10-15 04:01:53,141 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:01:53,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-15 04:01:53,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a75fef2f/2605ecd3429d4026aeae02f5d51ef69c/FLAG6a92bb381 [2020-10-15 04:01:53,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a75fef2f/2605ecd3429d4026aeae02f5d51ef69c [2020-10-15 04:01:53,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:01:53,576 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:01:53,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:01:53,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:01:53,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:01:53,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:01:53" (1/1) ... [2020-10-15 04:01:53,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4122bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:53, skipping insertion in model container [2020-10-15 04:01:53,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:01:53" (1/1) ... [2020-10-15 04:01:53,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:01:53,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:01:54,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:01:54,068 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:01:54,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:01:54,179 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:01:54,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:54 WrapperNode [2020-10-15 04:01:54,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:01:54,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:01:54,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:01:54,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:01:54,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:54" (1/1) ... [2020-10-15 04:01:54,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:54" (1/1) ... [2020-10-15 04:01:54,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:54" (1/1) ... [2020-10-15 04:01:54,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:54" (1/1) ... [2020-10-15 04:01:54,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:54" (1/1) ... [2020-10-15 04:01:54,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:54" (1/1) ... [2020-10-15 04:01:54,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:54" (1/1) ... [2020-10-15 04:01:54,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:01:54,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:01:54,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:01:54,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:01:54,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:01:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:01:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:01:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:01:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:01:54,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:01:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:01:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:01:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:01:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:01:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:01:54,311 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:01:54,311 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:01:54,311 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:01:54,311 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:01:54,312 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:01:54,312 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:01:54,312 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:01:54,312 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:01:54,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:01:54,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:01:55,067 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:01:55,068 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:01:55,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:01:55 BoogieIcfgContainer [2020-10-15 04:01:55,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:01:55,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:01:55,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:01:55,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:01:55,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:01:53" (1/3) ... [2020-10-15 04:01:55,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349c310a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:01:55, skipping insertion in model container [2020-10-15 04:01:55,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:01:54" (2/3) ... [2020-10-15 04:01:55,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349c310a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:01:55, skipping insertion in model container [2020-10-15 04:01:55,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:01:55" (3/3) ... [2020-10-15 04:01:55,082 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-15 04:01:55,093 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:01:55,102 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:01:55,118 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:01:55,145 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:01:55,145 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:01:55,145 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:01:55,145 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:01:55,146 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:01:55,146 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:01:55,146 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:01:55,146 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:01:55,171 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-10-15 04:01:55,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 04:01:55,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:01:55,185 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] [2020-10-15 04:01:55,186 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:01:55,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:01:55,193 INFO L82 PathProgramCache]: Analyzing trace with hash 653816526, now seen corresponding path program 1 times [2020-10-15 04:01:55,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:01:55,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153808232] [2020-10-15 04:01:55,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:01:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:55,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:55,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:56,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:56,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:57,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:57,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 04:01:57,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:01:57,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1916 [2020-10-15 04:01:57,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:57,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:01:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 04:01:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:01:57,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:01:57,879 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:01:57,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:01:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:57,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:57,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:01:57,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:01:57,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:01:57,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 04:01:57,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:01:57,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:01:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:01:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:01:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:01:57,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:01:57,938 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 04:01:57,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153808232] [2020-10-15 04:01:57,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:01:57,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:01:57,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499911773] [2020-10-15 04:01:57,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:01:57,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:01:57,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:01:57,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:01:57,971 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 4 states. [2020-10-15 04:01:58,296 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-15 04:01:59,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:01:59,112 INFO L93 Difference]: Finished difference Result 330 states and 554 transitions. [2020-10-15 04:01:59,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:01:59,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-15 04:01:59,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:01:59,129 INFO L225 Difference]: With dead ends: 330 [2020-10-15 04:01:59,129 INFO L226 Difference]: Without dead ends: 229 [2020-10-15 04:01:59,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:01:59,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-15 04:01:59,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2020-10-15 04:01:59,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-15 04:01:59,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 353 transitions. [2020-10-15 04:01:59,202 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 353 transitions. Word has length 66 [2020-10-15 04:01:59,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:01:59,203 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 353 transitions. [2020-10-15 04:01:59,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:01:59,203 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 353 transitions. [2020-10-15 04:01:59,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 04:01:59,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:01:59,209 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 04:01:59,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:01:59,209 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:01:59,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:01:59,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1237147599, now seen corresponding path program 1 times [2020-10-15 04:01:59,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:01:59,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170325336] [2020-10-15 04:01:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:01:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:01:59,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:59,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:01:59,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:00,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:00,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:03,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:03,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 04:02:03,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:02:03,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4242 [2020-10-15 04:02:03,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:03,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:03,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:03,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:03,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 04:02:03,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:03,874 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:02:03,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:03,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:03,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:03,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:03,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:03,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:02:03,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:03,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:03,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:03,919 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 04:02:03,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170325336] [2020-10-15 04:02:03,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:03,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:03,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478345367] [2020-10-15 04:02:03,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:03,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:03,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:03,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:03,924 INFO L87 Difference]: Start difference. First operand 227 states and 353 transitions. Second operand 5 states. [2020-10-15 04:02:05,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:05,179 INFO L93 Difference]: Finished difference Result 630 states and 978 transitions. [2020-10-15 04:02:05,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:05,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-15 04:02:05,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:05,190 INFO L225 Difference]: With dead ends: 630 [2020-10-15 04:02:05,190 INFO L226 Difference]: Without dead ends: 432 [2020-10-15 04:02:05,194 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 04:02:05,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-15 04:02:05,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 430. [2020-10-15 04:02:05,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-15 04:02:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 666 transitions. [2020-10-15 04:02:05,268 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 666 transitions. Word has length 68 [2020-10-15 04:02:05,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:05,268 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 666 transitions. [2020-10-15 04:02:05,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:05,269 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 666 transitions. [2020-10-15 04:02:05,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 04:02:05,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:05,273 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] [2020-10-15 04:02:05,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:02:05,274 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:05,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:05,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1425378005, now seen corresponding path program 1 times [2020-10-15 04:02:05,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:05,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541436021] [2020-10-15 04:02:05,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:05,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:05,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:05,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:06,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:06,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:08,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:08,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 04:02:08,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:02:08,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3517 [2020-10-15 04:02:08,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:08,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:08,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 04:02:08,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:09,137 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:02:09,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:09,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:09,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:09,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:09,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:09,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:02:09,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:09,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:09,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:09,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:09,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:09,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:09,195 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 04:02:09,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541436021] [2020-10-15 04:02:09,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:09,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:09,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619786514] [2020-10-15 04:02:09,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:09,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:09,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:09,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:09,199 INFO L87 Difference]: Start difference. First operand 430 states and 666 transitions. Second operand 5 states. [2020-10-15 04:02:10,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:10,019 INFO L93 Difference]: Finished difference Result 1238 states and 1917 transitions. [2020-10-15 04:02:10,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:10,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-15 04:02:10,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:10,029 INFO L225 Difference]: With dead ends: 1238 [2020-10-15 04:02:10,030 INFO L226 Difference]: Without dead ends: 822 [2020-10-15 04:02:10,034 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 04:02:10,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-10-15 04:02:10,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 820. [2020-10-15 04:02:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-10-15 04:02:10,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1259 transitions. [2020-10-15 04:02:10,101 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1259 transitions. Word has length 69 [2020-10-15 04:02:10,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:10,101 INFO L479 AbstractCegarLoop]: Abstraction has 820 states and 1259 transitions. [2020-10-15 04:02:10,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:10,102 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1259 transitions. [2020-10-15 04:02:10,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 04:02:10,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:10,109 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] [2020-10-15 04:02:10,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:02:10,110 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:10,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:10,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1226548802, now seen corresponding path program 1 times [2020-10-15 04:02:10,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:10,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200196836] [2020-10-15 04:02:10,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:10,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:10,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:10,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:10,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:11,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:11,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:15,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:15,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 04:02:15,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:02:15,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 04:02:15,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:15,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:15,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 04:02:15,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 04:02:15,433 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:02:15,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:15,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:15,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:15,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:15,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:15,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:02:15,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:15,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:15,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:15,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:15,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:15,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:15,482 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 04:02:15,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200196836] [2020-10-15 04:02:15,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:15,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:15,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914413176] [2020-10-15 04:02:15,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:15,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:15,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:15,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:15,487 INFO L87 Difference]: Start difference. First operand 820 states and 1259 transitions. Second operand 5 states. [2020-10-15 04:02:16,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:16,337 INFO L93 Difference]: Finished difference Result 2328 states and 3565 transitions. [2020-10-15 04:02:16,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:16,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-15 04:02:16,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:16,347 INFO L225 Difference]: With dead ends: 2328 [2020-10-15 04:02:16,347 INFO L226 Difference]: Without dead ends: 1558 [2020-10-15 04:02:16,349 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 04:02:16,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2020-10-15 04:02:16,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1556. [2020-10-15 04:02:16,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2020-10-15 04:02:16,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2365 transitions. [2020-10-15 04:02:16,473 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2365 transitions. Word has length 69 [2020-10-15 04:02:16,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:16,473 INFO L479 AbstractCegarLoop]: Abstraction has 1556 states and 2365 transitions. [2020-10-15 04:02:16,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:16,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2365 transitions. [2020-10-15 04:02:16,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 04:02:16,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:16,478 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] [2020-10-15 04:02:16,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:02:16,478 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:16,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:16,479 INFO L82 PathProgramCache]: Analyzing trace with hash -2130804256, now seen corresponding path program 1 times [2020-10-15 04:02:16,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:16,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846983704] [2020-10-15 04:02:16,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:16,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:16,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:16,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:16,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:16,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:17,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:17,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:21,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:21,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 04:02:21,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:02:21,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 04:02:21,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:21,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:21,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:21,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:21,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 04:02:21,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:21,781 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:02:21,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:21,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:21,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:21,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:21,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:21,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:02:21,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:21,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:21,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:21,816 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 04:02:21,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846983704] [2020-10-15 04:02:21,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:21,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:21,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111449375] [2020-10-15 04:02:21,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:21,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:21,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:21,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:21,819 INFO L87 Difference]: Start difference. First operand 1556 states and 2365 transitions. Second operand 5 states. [2020-10-15 04:02:22,009 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-15 04:02:23,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:23,015 INFO L93 Difference]: Finished difference Result 2333 states and 3537 transitions. [2020-10-15 04:02:23,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:02:23,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-15 04:02:23,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:23,024 INFO L225 Difference]: With dead ends: 2333 [2020-10-15 04:02:23,024 INFO L226 Difference]: Without dead ends: 1558 [2020-10-15 04:02:23,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:02:23,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2020-10-15 04:02:23,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1556. [2020-10-15 04:02:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2020-10-15 04:02:23,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2346 transitions. [2020-10-15 04:02:23,154 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2346 transitions. Word has length 70 [2020-10-15 04:02:23,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:23,155 INFO L479 AbstractCegarLoop]: Abstraction has 1556 states and 2346 transitions. [2020-10-15 04:02:23,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:23,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2346 transitions. [2020-10-15 04:02:23,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 04:02:23,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:23,159 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] [2020-10-15 04:02:23,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:02:23,159 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:23,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:23,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1922466608, now seen corresponding path program 1 times [2020-10-15 04:02:23,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:23,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275809646] [2020-10-15 04:02:23,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:23,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:23,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:23,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:23,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:23,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:26,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:26,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 04:02:26,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:02:26,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2915 [2020-10-15 04:02:26,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:26,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:02:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:02:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:02:26,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:26,324 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:02:26,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:26,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:26,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:26,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:26,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:26,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:02:26,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:26,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:26,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:26,353 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 04:02:26,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275809646] [2020-10-15 04:02:26,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:26,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:02:26,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672296268] [2020-10-15 04:02:26,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:02:26,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:26,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:02:26,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:02:26,356 INFO L87 Difference]: Start difference. First operand 1556 states and 2346 transitions. Second operand 4 states. [2020-10-15 04:02:26,553 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-15 04:02:27,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:27,408 INFO L93 Difference]: Finished difference Result 3784 states and 5940 transitions. [2020-10-15 04:02:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:27,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-15 04:02:27,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:27,423 INFO L225 Difference]: With dead ends: 3784 [2020-10-15 04:02:27,423 INFO L226 Difference]: Without dead ends: 2610 [2020-10-15 04:02:27,427 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 04:02:27,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2020-10-15 04:02:27,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 2608. [2020-10-15 04:02:27,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2608 states. [2020-10-15 04:02:27,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2608 states to 2608 states and 4030 transitions. [2020-10-15 04:02:27,649 INFO L78 Accepts]: Start accepts. Automaton has 2608 states and 4030 transitions. Word has length 70 [2020-10-15 04:02:27,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:27,649 INFO L479 AbstractCegarLoop]: Abstraction has 2608 states and 4030 transitions. [2020-10-15 04:02:27,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:02:27,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2608 states and 4030 transitions. [2020-10-15 04:02:27,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 04:02:27,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:27,655 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 04:02:27,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:02:27,656 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:27,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:27,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1020242385, now seen corresponding path program 1 times [2020-10-15 04:02:27,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:27,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114035533] [2020-10-15 04:02:27,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:27,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:27,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:27,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:28,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:28,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:28,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:32,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:32,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 04:02:32,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:02:32,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:02:32,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:32,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:32,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:32,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:32,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 04:02:32,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:32,995 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:02:32,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:33,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:33,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:33,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:33,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:33,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:02:33,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:33,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:33,033 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 04:02:33,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114035533] [2020-10-15 04:02:33,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:33,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:33,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863727258] [2020-10-15 04:02:33,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:33,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:33,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:33,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:33,036 INFO L87 Difference]: Start difference. First operand 2608 states and 4030 transitions. Second operand 5 states. [2020-10-15 04:02:34,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:34,165 INFO L93 Difference]: Finished difference Result 7175 states and 11201 transitions. [2020-10-15 04:02:34,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:34,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 04:02:34,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:34,193 INFO L225 Difference]: With dead ends: 7175 [2020-10-15 04:02:34,194 INFO L226 Difference]: Without dead ends: 4949 [2020-10-15 04:02:34,200 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 04:02:34,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2020-10-15 04:02:34,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4947. [2020-10-15 04:02:34,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4947 states. [2020-10-15 04:02:34,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4947 states to 4947 states and 7559 transitions. [2020-10-15 04:02:34,682 INFO L78 Accepts]: Start accepts. Automaton has 4947 states and 7559 transitions. Word has length 72 [2020-10-15 04:02:34,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:34,683 INFO L479 AbstractCegarLoop]: Abstraction has 4947 states and 7559 transitions. [2020-10-15 04:02:34,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:34,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4947 states and 7559 transitions. [2020-10-15 04:02:34,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 04:02:34,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:34,692 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 04:02:34,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:02:34,693 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:34,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:34,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1985453216, now seen corresponding path program 1 times [2020-10-15 04:02:34,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:34,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579585943] [2020-10-15 04:02:34,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:34,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:34,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:34,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:35,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:35,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:35,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:39,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:39,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 04:02:39,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:02:39,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:02:39,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:39,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:39,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:39,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:39,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 04:02:39,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:39,969 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:02:39,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:39,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:39,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:39,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:39,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:39,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:02:39,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:39,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:39,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:39,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:39,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:39,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:40,004 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 04:02:40,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579585943] [2020-10-15 04:02:40,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:40,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:40,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740331102] [2020-10-15 04:02:40,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:40,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:40,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:40,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:40,007 INFO L87 Difference]: Start difference. First operand 4947 states and 7559 transitions. Second operand 5 states. [2020-10-15 04:02:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:41,354 INFO L93 Difference]: Finished difference Result 13729 states and 21205 transitions. [2020-10-15 04:02:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:41,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-15 04:02:41,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:41,402 INFO L225 Difference]: With dead ends: 13729 [2020-10-15 04:02:41,402 INFO L226 Difference]: Without dead ends: 9471 [2020-10-15 04:02:41,415 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 04:02:41,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9471 states. [2020-10-15 04:02:42,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9471 to 9469. [2020-10-15 04:02:42,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9469 states. [2020-10-15 04:02:42,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9469 states to 9469 states and 14339 transitions. [2020-10-15 04:02:42,169 INFO L78 Accepts]: Start accepts. Automaton has 9469 states and 14339 transitions. Word has length 73 [2020-10-15 04:02:42,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:42,169 INFO L479 AbstractCegarLoop]: Abstraction has 9469 states and 14339 transitions. [2020-10-15 04:02:42,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:42,170 INFO L276 IsEmpty]: Start isEmpty. Operand 9469 states and 14339 transitions. [2020-10-15 04:02:42,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 04:02:42,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:42,181 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 04:02:42,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:02:42,182 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:42,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:42,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1465045620, now seen corresponding path program 1 times [2020-10-15 04:02:42,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:42,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437526255] [2020-10-15 04:02:42,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:42,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:42,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:42,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:42,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:42,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:43,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:47,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:47,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 04:02:47,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:02:47,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 04:02:47,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:47,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:47,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 04:02:47,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:47,455 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:02:47,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:47,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:47,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:47,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:47,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:47,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:02:47,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:47,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:47,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:47,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:02:47,492 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 04:02:47,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437526255] [2020-10-15 04:02:47,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:47,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:47,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535640054] [2020-10-15 04:02:47,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:47,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:47,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:47,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:47,495 INFO L87 Difference]: Start difference. First operand 9469 states and 14339 transitions. Second operand 5 states. [2020-10-15 04:02:49,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:49,284 INFO L93 Difference]: Finished difference Result 26271 states and 40196 transitions. [2020-10-15 04:02:49,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:02:49,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-15 04:02:49,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:49,343 INFO L225 Difference]: With dead ends: 26271 [2020-10-15 04:02:49,343 INFO L226 Difference]: Without dead ends: 18109 [2020-10-15 04:02:49,363 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 04:02:49,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18109 states. [2020-10-15 04:02:50,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18109 to 18107. [2020-10-15 04:02:50,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18107 states. [2020-10-15 04:02:50,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18107 states to 18107 states and 27138 transitions. [2020-10-15 04:02:50,697 INFO L78 Accepts]: Start accepts. Automaton has 18107 states and 27138 transitions. Word has length 73 [2020-10-15 04:02:50,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:02:50,697 INFO L479 AbstractCegarLoop]: Abstraction has 18107 states and 27138 transitions. [2020-10-15 04:02:50,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:02:50,698 INFO L276 IsEmpty]: Start isEmpty. Operand 18107 states and 27138 transitions. [2020-10-15 04:02:50,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 04:02:50,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:02:50,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:02:50,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:02:50,722 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:02:50,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:02:50,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1020833800, now seen corresponding path program 1 times [2020-10-15 04:02:50,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:02:50,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137641010] [2020-10-15 04:02:50,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:02:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:50,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:50,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:50,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:50,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:51,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:51,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:51,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:52,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:55,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:55,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 04:02:55,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:02:55,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 04:02:55,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:55,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:02:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:02:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 04:02:55,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:55,970 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:02:55,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:02:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:02:55,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:02:55,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:02:55,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:02:55,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:02:55,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:02:55,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:02:55,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:02:55,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:02:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:02:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:02:55,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:02:56,001 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 04:02:56,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137641010] [2020-10-15 04:02:56,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:02:56,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:02:56,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640026647] [2020-10-15 04:02:56,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:02:56,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:02:56,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:02:56,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:02:56,004 INFO L87 Difference]: Start difference. First operand 18107 states and 27138 transitions. Second operand 5 states. [2020-10-15 04:02:56,227 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-15 04:02:58,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:02:58,645 INFO L93 Difference]: Finished difference Result 33875 states and 50375 transitions. [2020-10-15 04:02:58,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:02:58,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-15 04:02:58,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:02:58,699 INFO L225 Difference]: With dead ends: 33875 [2020-10-15 04:02:58,699 INFO L226 Difference]: Without dead ends: 23797 [2020-10-15 04:02:58,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:02:58,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23797 states. [2020-10-15 04:03:00,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23797 to 23795. [2020-10-15 04:03:00,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23795 states. [2020-10-15 04:03:00,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23795 states to 23795 states and 34832 transitions. [2020-10-15 04:03:00,419 INFO L78 Accepts]: Start accepts. Automaton has 23795 states and 34832 transitions. Word has length 74 [2020-10-15 04:03:00,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:03:00,420 INFO L479 AbstractCegarLoop]: Abstraction has 23795 states and 34832 transitions. [2020-10-15 04:03:00,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:03:00,420 INFO L276 IsEmpty]: Start isEmpty. Operand 23795 states and 34832 transitions. [2020-10-15 04:03:00,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 04:03:00,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:03:00,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:03:00,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:03:00,454 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:03:00,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:03:00,456 INFO L82 PathProgramCache]: Analyzing trace with hash 885743570, now seen corresponding path program 1 times [2020-10-15 04:03:00,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:03:00,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059791567] [2020-10-15 04:03:00,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:03:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:00,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:00,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:00,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:00,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:00,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:03,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:05,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:05,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 04:03:05,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:03:05,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:03:05,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:05,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:03:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-15 04:03:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 04:03:05,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:05,675 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:03:05,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:03:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:05,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:05,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:05,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:03:05,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:03:05,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:03:05,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:05,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:05,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:03:05,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:03:05,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:03:05,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:05,702 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 04:03:05,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059791567] [2020-10-15 04:03:05,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:03:05,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:03:05,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37357905] [2020-10-15 04:03:05,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:03:05,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:03:05,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:03:05,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:03:05,704 INFO L87 Difference]: Start difference. First operand 23795 states and 34832 transitions. Second operand 4 states. [2020-10-15 04:03:05,902 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-15 04:03:08,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:03:08,842 INFO L93 Difference]: Finished difference Result 56663 states and 85522 transitions. [2020-10-15 04:03:08,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:03:08,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-10-15 04:03:08,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:03:08,938 INFO L225 Difference]: With dead ends: 56663 [2020-10-15 04:03:08,938 INFO L226 Difference]: Without dead ends: 37621 [2020-10-15 04:03:08,986 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 04:03:09,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37621 states. [2020-10-15 04:03:11,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37621 to 37619. [2020-10-15 04:03:11,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37619 states. [2020-10-15 04:03:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37619 states to 37619 states and 55888 transitions. [2020-10-15 04:03:11,754 INFO L78 Accepts]: Start accepts. Automaton has 37619 states and 55888 transitions. Word has length 74 [2020-10-15 04:03:11,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:03:11,755 INFO L479 AbstractCegarLoop]: Abstraction has 37619 states and 55888 transitions. [2020-10-15 04:03:11,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:03:11,755 INFO L276 IsEmpty]: Start isEmpty. Operand 37619 states and 55888 transitions. [2020-10-15 04:03:11,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 04:03:11,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:03:11,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:03:11,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:03:11,775 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:03:11,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:03:11,776 INFO L82 PathProgramCache]: Analyzing trace with hash -2131923110, now seen corresponding path program 1 times [2020-10-15 04:03:11,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:03:11,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697316906] [2020-10-15 04:03:11,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:03:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:11,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:11,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:11,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:11,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:11,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:15,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:16,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:16,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 04:03:16,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:03:16,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:03:16,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:16,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:03:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 04:03:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 04:03:16,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:17,012 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:03:17,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:03:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:17,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:17,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:17,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:03:17,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:03:17,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:03:17,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:17,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:17,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:03:17,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:03:17,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:03:17,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:17,034 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 04:03:17,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697316906] [2020-10-15 04:03:17,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:03:17,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 04:03:17,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369010480] [2020-10-15 04:03:17,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:03:17,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:03:17,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:03:17,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:03:17,037 INFO L87 Difference]: Start difference. First operand 37619 states and 55888 transitions. Second operand 6 states. [2020-10-15 04:03:17,272 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 04:03:25,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:03:25,491 INFO L93 Difference]: Finished difference Result 154943 states and 238390 transitions. [2020-10-15 04:03:25,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:03:25,492 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-15 04:03:25,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:03:25,798 INFO L225 Difference]: With dead ends: 154943 [2020-10-15 04:03:25,798 INFO L226 Difference]: Without dead ends: 122269 [2020-10-15 04:03:25,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:03:26,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122269 states. [2020-10-15 04:03:32,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122269 to 66899. [2020-10-15 04:03:32,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66899 states. [2020-10-15 04:03:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66899 states to 66899 states and 100368 transitions. [2020-10-15 04:03:32,329 INFO L78 Accepts]: Start accepts. Automaton has 66899 states and 100368 transitions. Word has length 77 [2020-10-15 04:03:32,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:03:32,329 INFO L479 AbstractCegarLoop]: Abstraction has 66899 states and 100368 transitions. [2020-10-15 04:03:32,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:03:32,329 INFO L276 IsEmpty]: Start isEmpty. Operand 66899 states and 100368 transitions. [2020-10-15 04:03:32,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:03:32,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:03:32,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:03:32,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:03:32,361 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:03:32,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:03:32,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1476832213, now seen corresponding path program 1 times [2020-10-15 04:03:32,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:03:32,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497314494] [2020-10-15 04:03:32,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:03:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:32,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:32,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:32,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:32,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:32,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:33,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:36,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:37,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:37,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 04:03:37,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:03:37,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 04:03:37,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:37,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:37,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:03:37,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-15 04:03:37,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 04:03:37,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 04:03:37,787 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:03:37,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:03:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:37,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:37,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:03:37,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:03:37,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:03:37,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:03:37,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:03:37,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:03:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:03:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:03:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:03:37,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:03:37,825 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 04:03:37,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497314494] [2020-10-15 04:03:37,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:03:37,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:03:37,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034342875] [2020-10-15 04:03:37,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:03:37,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:03:37,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:03:37,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:03:37,827 INFO L87 Difference]: Start difference. First operand 66899 states and 100368 transitions. Second operand 5 states. [2020-10-15 04:03:38,059 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-15 04:03:48,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:03:48,484 INFO L93 Difference]: Finished difference Result 151385 states and 230035 transitions. [2020-10-15 04:03:48,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:03:48,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-15 04:03:48,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:03:48,668 INFO L225 Difference]: With dead ends: 151385 [2020-10-15 04:03:48,668 INFO L226 Difference]: Without dead ends: 120663 [2020-10-15 04:03:48,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:03:48,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120663 states. [2020-10-15 04:03:58,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120663 to 97107. [2020-10-15 04:03:58,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97107 states. [2020-10-15 04:03:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97107 states to 97107 states and 146064 transitions. [2020-10-15 04:03:58,549 INFO L78 Accepts]: Start accepts. Automaton has 97107 states and 146064 transitions. Word has length 78 [2020-10-15 04:03:58,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:03:58,549 INFO L479 AbstractCegarLoop]: Abstraction has 97107 states and 146064 transitions. [2020-10-15 04:03:58,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:03:58,549 INFO L276 IsEmpty]: Start isEmpty. Operand 97107 states and 146064 transitions. [2020-10-15 04:03:58,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:03:58,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:03:58,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:03:58,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:03:58,573 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:03:58,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:03:58,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1726717420, now seen corresponding path program 1 times [2020-10-15 04:03:58,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:03:58,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799507286] [2020-10-15 04:03:58,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:03:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:03:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:58,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:58,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:58,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:03:58,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:01,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:01,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:03,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:03,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 04:04:03,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:04:03,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 04:04:03,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:03,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:03,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:04:03,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 04:04:03,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:04:03,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:04:03,817 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:04:03,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:04:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:03,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:03,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:03,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:04:03,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:04:03,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:04:03,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:03,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:03,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:04:03,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:04:03,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:04:03,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:04:03,840 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 04:04:03,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799507286] [2020-10-15 04:04:03,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:04:03,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:04:03,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260751307] [2020-10-15 04:04:03,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:04:03,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:04:03,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:04:03,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:04:03,842 INFO L87 Difference]: Start difference. First operand 97107 states and 146064 transitions. Second operand 5 states. [2020-10-15 04:04:04,059 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-15 04:04:20,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:04:20,062 INFO L93 Difference]: Finished difference Result 285785 states and 437331 transitions. [2020-10-15 04:04:20,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:04:20,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-15 04:04:20,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:04:20,378 INFO L225 Difference]: With dead ends: 285785 [2020-10-15 04:04:20,379 INFO L226 Difference]: Without dead ends: 194071 [2020-10-15 04:04:20,458 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 04:04:20,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194071 states. [2020-10-15 04:04:35,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194071 to 145043. [2020-10-15 04:04:35,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145043 states. [2020-10-15 04:04:35,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145043 states to 145043 states and 219024 transitions. [2020-10-15 04:04:35,840 INFO L78 Accepts]: Start accepts. Automaton has 145043 states and 219024 transitions. Word has length 78 [2020-10-15 04:04:35,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:04:35,840 INFO L479 AbstractCegarLoop]: Abstraction has 145043 states and 219024 transitions. [2020-10-15 04:04:35,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:04:35,840 INFO L276 IsEmpty]: Start isEmpty. Operand 145043 states and 219024 transitions. [2020-10-15 04:04:35,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:04:35,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:04:35,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:04:35,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:04:35,879 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:04:35,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:04:35,879 INFO L82 PathProgramCache]: Analyzing trace with hash -88126839, now seen corresponding path program 1 times [2020-10-15 04:04:35,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:04:35,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979730261] [2020-10-15 04:04:35,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:04:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:35,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:35,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:35,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:36,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:39,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:39,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:40,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:40,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 04:04:40,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:04:40,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:04:40,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:40,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:04:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 04:04:40,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:04:40,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:04:41,162 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 04:04:41,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:04:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:04:41,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:04:41,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:04:41,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:04:41,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:04:41,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:04:41,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:04:41,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:04:41,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:04:41,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:04:41,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:04:41,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:04:41,194 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 04:04:41,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979730261] [2020-10-15 04:04:41,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:04:41,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:04:41,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848261781] [2020-10-15 04:04:41,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:04:41,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:04:41,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:04:41,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:04:41,196 INFO L87 Difference]: Start difference. First operand 145043 states and 219024 transitions. Second operand 5 states. [2020-10-15 04:04:41,443 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-15 04:05:09,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:09,067 INFO L93 Difference]: Finished difference Result 362585 states and 551507 transitions. [2020-10-15 04:05:09,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:05:09,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-15 04:05:09,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:09,567 INFO L225 Difference]: With dead ends: 362585 [2020-10-15 04:05:09,567 INFO L226 Difference]: Without dead ends: 280983 [2020-10-15 04:05:09,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:05:09,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280983 states. [2020-10-15 04:05:33,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280983 to 225299. [2020-10-15 04:05:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225299 states. [2020-10-15 04:05:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225299 states to 225299 states and 339664 transitions. [2020-10-15 04:05:33,566 INFO L78 Accepts]: Start accepts. Automaton has 225299 states and 339664 transitions. Word has length 78 [2020-10-15 04:05:33,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:33,566 INFO L479 AbstractCegarLoop]: Abstraction has 225299 states and 339664 transitions. [2020-10-15 04:05:33,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:05:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 225299 states and 339664 transitions. [2020-10-15 04:05:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 04:05:33,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:33,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:05:33,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:05:33,604 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:33,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:33,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1832761058, now seen corresponding path program 1 times [2020-10-15 04:05:33,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:33,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632039175] [2020-10-15 04:05:33,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:33,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:33,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:33,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:33,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:33,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:33,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:33,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking...