/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.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:16:49,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:16:49,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:16:49,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:16:49,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:16:49,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:16:49,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:16:49,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:16:49,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:16:49,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:16:49,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:16:49,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:16:49,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:16:49,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:16:49,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:16:49,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:16:49,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:16:49,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:16:49,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:16:49,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:16:49,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:16:49,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:16:49,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:16:49,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:16:49,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:16:49,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:16:49,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:16:49,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:16:49,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:16:49,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:16:49,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:16:49,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:16:49,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:16:49,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:16:49,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:16:49,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:16:49,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:16:49,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:16:49,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:16:49,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:16:49,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:16:49,300 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 04:16:49,323 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:16:49,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:16:49,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:16:49,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:16:49,325 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:16:49,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:16:49,325 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:16:49,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:16:49,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:16:49,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:16:49,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:16:49,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:16:49,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:16:49,326 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:16:49,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:16:49,327 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:16:49,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:16:49,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:16:49,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:16:49,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:16:49,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:16:49,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:16:49,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:16:49,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:16:49,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:16:49,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:16:49,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:16:49,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:16:49,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:16:49,330 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 04:16:49,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:16:49,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:16:49,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:16:49,729 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:16:49,729 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:16:49,730 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 04:16:49,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e15358491/7dda5084dbdb4e8a9d5fda2d6e601fc0/FLAGeb43d5787 [2020-10-15 04:16:50,431 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:16:50,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 04:16:50,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e15358491/7dda5084dbdb4e8a9d5fda2d6e601fc0/FLAGeb43d5787 [2020-10-15 04:16:50,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e15358491/7dda5084dbdb4e8a9d5fda2d6e601fc0 [2020-10-15 04:16:50,665 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:16:50,667 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:16:50,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:16:50,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:16:50,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:16:50,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:16:50" (1/1) ... [2020-10-15 04:16:50,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79432bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:50, skipping insertion in model container [2020-10-15 04:16:50,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:16:50" (1/1) ... [2020-10-15 04:16:50,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:16:50,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:16:51,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:16:51,586 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:16:51,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:16:51,836 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:16:51,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:51 WrapperNode [2020-10-15 04:16:51,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:16:51,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:16:51,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:16:51,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:16:51,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:51" (1/1) ... [2020-10-15 04:16:51,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:51" (1/1) ... [2020-10-15 04:16:51,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:51" (1/1) ... [2020-10-15 04:16:51,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:51" (1/1) ... [2020-10-15 04:16:52,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:51" (1/1) ... [2020-10-15 04:16:52,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:51" (1/1) ... [2020-10-15 04:16:52,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:51" (1/1) ... [2020-10-15 04:16:52,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:16:52,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:16:52,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:16:52,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:16:52,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:51" (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 04:16:52,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:16:52,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:16:52,153 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:16:52,153 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:16:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:16:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:16:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:16:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:16:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:16:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:16:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:16:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:16:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:16:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:16:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:16:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:16:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 04:16:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:16:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:16:52,157 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:16:52,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:16:52,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:16:54,268 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:16:54,268 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:16:54,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:16:54 BoogieIcfgContainer [2020-10-15 04:16:54,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:16:54,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:16:54,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:16:54,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:16:54,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:16:50" (1/3) ... [2020-10-15 04:16:54,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14828ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:16:54, skipping insertion in model container [2020-10-15 04:16:54,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:51" (2/3) ... [2020-10-15 04:16:54,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14828ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:16:54, skipping insertion in model container [2020-10-15 04:16:54,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:16:54" (3/3) ... [2020-10-15 04:16:54,290 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 04:16:54,302 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:16:54,316 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:16:54,335 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:16:54,385 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:16:54,386 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:16:54,386 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:16:54,386 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:16:54,386 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:16:54,387 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:16:54,433 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:16:54,433 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:16:54,481 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2020-10-15 04:16:54,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-15 04:16:54,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:54,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:16:54,532 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:54,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:54,539 INFO L82 PathProgramCache]: Analyzing trace with hash 558716282, now seen corresponding path program 1 times [2020-10-15 04:16:54,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:54,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070686218] [2020-10-15 04:16:54,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:16:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:55,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:56,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:56,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:57,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:57,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:58,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:00,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:00,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-15 04:17:00,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:17:00,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 04:17:00,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:00,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:17:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-15 04:17:00,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 04:17:00,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 04:17:01,594 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:17:01,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:01,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:01,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:01,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:01,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 04:17:01,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:01,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:01,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:01,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:01,749 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 04:17:01,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070686218] [2020-10-15 04:17:01,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:01,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:17:01,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372164047] [2020-10-15 04:17:01,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:17:01,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:01,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:17:01,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:17:01,781 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2020-10-15 04:17:02,594 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-15 04:17:08,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:08,095 INFO L93 Difference]: Finished difference Result 1209 states and 2150 transitions. [2020-10-15 04:17:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:17:08,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 217 [2020-10-15 04:17:08,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:08,146 INFO L225 Difference]: With dead ends: 1209 [2020-10-15 04:17:08,146 INFO L226 Difference]: Without dead ends: 978 [2020-10-15 04:17:08,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:08,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2020-10-15 04:17:08,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 976. [2020-10-15 04:17:08,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 976 states. [2020-10-15 04:17:08,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1694 transitions. [2020-10-15 04:17:08,310 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1694 transitions. Word has length 217 [2020-10-15 04:17:08,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:08,311 INFO L479 AbstractCegarLoop]: Abstraction has 976 states and 1694 transitions. [2020-10-15 04:17:08,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:17:08,312 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1694 transitions. [2020-10-15 04:17:08,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-15 04:17:08,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:08,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:08,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:17:08,323 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:08,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:08,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1009759103, now seen corresponding path program 1 times [2020-10-15 04:17:08,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:08,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203464816] [2020-10-15 04:17:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:08,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:09,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:10,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:10,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:10,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:11,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:13,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:13,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:13,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-15 04:17:13,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:17:13,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-15 04:17:13,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:13,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:13,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:13,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:13,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-15 04:17:13,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:17:14,750 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:17:14,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:14,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:14,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:14,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:14,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:14,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 04:17:14,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:14,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:14,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:14,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:14,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:14,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:14,949 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 04:17:14,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203464816] [2020-10-15 04:17:14,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:14,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:14,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345637640] [2020-10-15 04:17:14,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:14,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:14,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:14,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:14,955 INFO L87 Difference]: Start difference. First operand 976 states and 1694 transitions. Second operand 5 states. [2020-10-15 04:17:21,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:21,946 INFO L93 Difference]: Finished difference Result 2811 states and 4873 transitions. [2020-10-15 04:17:21,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:17:21,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-15 04:17:21,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:21,967 INFO L225 Difference]: With dead ends: 2811 [2020-10-15 04:17:21,967 INFO L226 Difference]: Without dead ends: 1918 [2020-10-15 04:17:21,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:17:21,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2020-10-15 04:17:22,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1916. [2020-10-15 04:17:22,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2020-10-15 04:17:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 3313 transitions. [2020-10-15 04:17:22,129 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 3313 transitions. Word has length 221 [2020-10-15 04:17:22,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:22,132 INFO L479 AbstractCegarLoop]: Abstraction has 1916 states and 3313 transitions. [2020-10-15 04:17:22,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:17:22,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 3313 transitions. [2020-10-15 04:17:22,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-15 04:17:22,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:22,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:22,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:17:22,147 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:22,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:22,148 INFO L82 PathProgramCache]: Analyzing trace with hash -796077453, now seen corresponding path program 1 times [2020-10-15 04:17:22,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:22,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59955435] [2020-10-15 04:17:22,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:22,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:22,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:24,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:24,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:24,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:25,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:26,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:26,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:27,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:27,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-15 04:17:27,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:17:27,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-15 04:17:27,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:27,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:27,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:27,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:27,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-15 04:17:27,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:28,503 WARN L193 SmtUtils]: Spent 899.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:17:28,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:28,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:28,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:28,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:28,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:28,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 04:17:28,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:28,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:28,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:28,813 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 04:17:28,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59955435] [2020-10-15 04:17:28,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:28,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:28,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613243786] [2020-10-15 04:17:28,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:28,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:28,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:28,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:28,821 INFO L87 Difference]: Start difference. First operand 1916 states and 3313 transitions. Second operand 5 states. [2020-10-15 04:17:36,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:36,276 INFO L93 Difference]: Finished difference Result 5494 states and 9476 transitions. [2020-10-15 04:17:36,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:17:36,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-15 04:17:36,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:36,297 INFO L225 Difference]: With dead ends: 5494 [2020-10-15 04:17:36,297 INFO L226 Difference]: Without dead ends: 3715 [2020-10-15 04:17:36,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:17:36,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2020-10-15 04:17:36,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 3713. [2020-10-15 04:17:36,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3713 states. [2020-10-15 04:17:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 6383 transitions. [2020-10-15 04:17:36,471 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 6383 transitions. Word has length 222 [2020-10-15 04:17:36,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:36,472 INFO L479 AbstractCegarLoop]: Abstraction has 3713 states and 6383 transitions. [2020-10-15 04:17:36,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:17:36,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 6383 transitions. [2020-10-15 04:17:36,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-15 04:17:36,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:36,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:36,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:17:36,486 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:36,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:36,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1512836013, now seen corresponding path program 1 times [2020-10-15 04:17:36,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:36,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299445826] [2020-10-15 04:17:36,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:36,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:36,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:37,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:38,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:38,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:38,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:39,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:40,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:41,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:41,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:41,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-15 04:17:41,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:17:41,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 04:17:41,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:41,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:41,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-15 04:17:41,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:42,653 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:17:42,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:42,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:42,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:42,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:42,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:42,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 04:17:42,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:42,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:42,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:42,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:42,932 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 04:17:42,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299445826] [2020-10-15 04:17:42,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:42,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:42,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574285641] [2020-10-15 04:17:42,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:42,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:42,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:42,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:42,938 INFO L87 Difference]: Start difference. First operand 3713 states and 6383 transitions. Second operand 5 states. [2020-10-15 04:17:49,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:49,655 INFO L93 Difference]: Finished difference Result 10905 states and 18733 transitions. [2020-10-15 04:17:49,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:17:49,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-15 04:17:49,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:49,693 INFO L225 Difference]: With dead ends: 10905 [2020-10-15 04:17:49,693 INFO L226 Difference]: Without dead ends: 7325 [2020-10-15 04:17:49,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:17:49,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7325 states. [2020-10-15 04:17:50,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7325 to 7323. [2020-10-15 04:17:50,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7323 states. [2020-10-15 04:17:50,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7323 states to 7323 states and 12549 transitions. [2020-10-15 04:17:50,112 INFO L78 Accepts]: Start accepts. Automaton has 7323 states and 12549 transitions. Word has length 222 [2020-10-15 04:17:50,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:50,112 INFO L479 AbstractCegarLoop]: Abstraction has 7323 states and 12549 transitions. [2020-10-15 04:17:50,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:17:50,113 INFO L276 IsEmpty]: Start isEmpty. Operand 7323 states and 12549 transitions. [2020-10-15 04:17:50,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-15 04:17:50,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:50,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:50,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:17:50,130 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:50,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:50,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1608199056, now seen corresponding path program 1 times [2020-10-15 04:17:50,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:50,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693400155] [2020-10-15 04:17:50,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:50,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:50,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:51,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:51,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:51,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:52,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:52,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:53,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:54,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:55,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:55,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-15 04:17:55,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:17:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-15 04:17:55,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:55,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-15 04:17:55,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:56,575 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:17:56,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:56,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:56,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:56,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:56,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:56,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:17:56,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:56,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:56,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:56,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:56,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:56,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:56,775 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 04:17:56,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693400155] [2020-10-15 04:17:56,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:56,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:56,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365856962] [2020-10-15 04:17:56,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:56,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:56,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:56,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:56,778 INFO L87 Difference]: Start difference. First operand 7323 states and 12549 transitions. Second operand 5 states. [2020-10-15 04:18:03,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:03,309 INFO L93 Difference]: Finished difference Result 21439 states and 36687 transitions. [2020-10-15 04:18:03,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:18:03,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-15 04:18:03,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:03,374 INFO L225 Difference]: With dead ends: 21439 [2020-10-15 04:18:03,374 INFO L226 Difference]: Without dead ends: 14417 [2020-10-15 04:18:03,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:18:03,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14417 states. [2020-10-15 04:18:04,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14417 to 14415. [2020-10-15 04:18:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14415 states. [2020-10-15 04:18:04,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14415 states to 14415 states and 24577 transitions. [2020-10-15 04:18:04,102 INFO L78 Accepts]: Start accepts. Automaton has 14415 states and 24577 transitions. Word has length 223 [2020-10-15 04:18:04,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:04,103 INFO L479 AbstractCegarLoop]: Abstraction has 14415 states and 24577 transitions. [2020-10-15 04:18:04,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:18:04,103 INFO L276 IsEmpty]: Start isEmpty. Operand 14415 states and 24577 transitions. [2020-10-15 04:18:04,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-15 04:18:04,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:04,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:04,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:18:04,135 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:04,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:04,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1654363657, now seen corresponding path program 1 times [2020-10-15 04:18:04,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:04,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066796139] [2020-10-15 04:18:04,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:04,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:04,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:05,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:05,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:05,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:05,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:06,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:07,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:07,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:08,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:09,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:09,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-15 04:18:09,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:18:09,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:18:09,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:09,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:18:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:18:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-15 04:18:09,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:18:10,283 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:18:10,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:10,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:10,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:10,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:10,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:10,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:18:10,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:10,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:10,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:10,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:10,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:10,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:18:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:18:10,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066796139] [2020-10-15 04:18:10,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:10,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:18:10,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444358666] [2020-10-15 04:18:10,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:18:10,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:10,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:18:10,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:18:10,447 INFO L87 Difference]: Start difference. First operand 14415 states and 24577 transitions. Second operand 5 states. [2020-10-15 04:18:17,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:17,708 INFO L93 Difference]: Finished difference Result 42195 states and 71841 transitions. [2020-10-15 04:18:17,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:18:17,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-15 04:18:17,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:17,782 INFO L225 Difference]: With dead ends: 42195 [2020-10-15 04:18:17,782 INFO L226 Difference]: Without dead ends: 28289 [2020-10-15 04:18:17,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:18:17,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28289 states. [2020-10-15 04:18:19,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28289 to 28287. [2020-10-15 04:18:19,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28287 states. [2020-10-15 04:18:19,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28287 states to 28287 states and 47967 transitions. [2020-10-15 04:18:19,162 INFO L78 Accepts]: Start accepts. Automaton has 28287 states and 47967 transitions. Word has length 223 [2020-10-15 04:18:19,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:19,162 INFO L479 AbstractCegarLoop]: Abstraction has 28287 states and 47967 transitions. [2020-10-15 04:18:19,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:18:19,163 INFO L276 IsEmpty]: Start isEmpty. Operand 28287 states and 47967 transitions. [2020-10-15 04:18:19,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-15 04:18:19,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:19,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:19,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:18:19,208 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:19,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:19,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1213045968, now seen corresponding path program 1 times [2020-10-15 04:18:19,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:19,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216814353] [2020-10-15 04:18:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:19,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:19,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:20,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:20,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:21,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:21,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:22,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:24,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:24,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:24,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-15 04:18:24,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:18:24,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-15 04:18:24,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:24,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:18:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:18:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-15 04:18:24,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:18:25,274 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:18:25,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:25,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:25,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:25,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:25,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:25,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:18:25,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:25,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:25,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:25,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:25,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:18:25,414 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 04:18:25,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216814353] [2020-10-15 04:18:25,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:25,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:18:25,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313741852] [2020-10-15 04:18:25,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:18:25,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:25,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:18:25,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:18:25,417 INFO L87 Difference]: Start difference. First operand 28287 states and 47967 transitions. Second operand 5 states. [2020-10-15 04:18:34,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:34,902 INFO L93 Difference]: Finished difference Result 84067 states and 142501 transitions. [2020-10-15 04:18:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:18:34,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-15 04:18:34,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:35,024 INFO L225 Difference]: With dead ends: 84067 [2020-10-15 04:18:35,025 INFO L226 Difference]: Without dead ends: 56113 [2020-10-15 04:18:35,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:18:35,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56113 states. [2020-10-15 04:18:37,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56113 to 56111. [2020-10-15 04:18:37,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56111 states. [2020-10-15 04:18:37,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56111 states to 56111 states and 94787 transitions. [2020-10-15 04:18:37,753 INFO L78 Accepts]: Start accepts. Automaton has 56111 states and 94787 transitions. Word has length 224 [2020-10-15 04:18:37,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:37,753 INFO L479 AbstractCegarLoop]: Abstraction has 56111 states and 94787 transitions. [2020-10-15 04:18:37,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:18:37,753 INFO L276 IsEmpty]: Start isEmpty. Operand 56111 states and 94787 transitions. [2020-10-15 04:18:37,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-15 04:18:37,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:37,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:37,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:18:37,809 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:37,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:37,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1961769156, now seen corresponding path program 1 times [2020-10-15 04:18:37,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:37,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507147892] [2020-10-15 04:18:37,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:37,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:38,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:38,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:38,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:39,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:39,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:40,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:40,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:42,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:42,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-15 04:18:42,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:18:42,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 04:18:42,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:42,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:18:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:18:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-15 04:18:42,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:18:43,735 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:18:43,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:43,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:43,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:43,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:43,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:43,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:18:43,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:43,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:43,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:43,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:43,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:43,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:18:43,860 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 04:18:43,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507147892] [2020-10-15 04:18:43,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:43,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:18:43,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750659022] [2020-10-15 04:18:43,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:18:43,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:43,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:18:43,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:18:43,862 INFO L87 Difference]: Start difference. First operand 56111 states and 94787 transitions. Second operand 5 states. [2020-10-15 04:18:56,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:56,964 INFO L93 Difference]: Finished difference Result 163107 states and 275009 transitions. [2020-10-15 04:18:56,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:18:56,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-15 04:18:56,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:57,170 INFO L225 Difference]: With dead ends: 163107 [2020-10-15 04:18:57,171 INFO L226 Difference]: Without dead ends: 109969 [2020-10-15 04:18:57,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:18:57,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109969 states. [2020-10-15 04:19:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109969 to 109967. [2020-10-15 04:19:06,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109967 states. [2020-10-15 04:19:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109967 states to 109967 states and 184975 transitions. [2020-10-15 04:19:06,777 INFO L78 Accepts]: Start accepts. Automaton has 109967 states and 184975 transitions. Word has length 224 [2020-10-15 04:19:06,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:19:06,777 INFO L479 AbstractCegarLoop]: Abstraction has 109967 states and 184975 transitions. [2020-10-15 04:19:06,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:19:06,778 INFO L276 IsEmpty]: Start isEmpty. Operand 109967 states and 184975 transitions. [2020-10-15 04:19:06,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-15 04:19:06,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:19:06,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:06,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:19:06,899 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:19:06,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:19:06,900 INFO L82 PathProgramCache]: Analyzing trace with hash 696382205, now seen corresponding path program 1 times [2020-10-15 04:19:06,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:19:06,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069242446] [2020-10-15 04:19:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:19:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:07,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:07,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:07,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:07,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:07,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:07,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:08,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:10,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:10,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:12,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:12,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-15 04:19:12,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:19:12,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-15 04:19:12,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:12,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:12,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:19:12,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-15 04:19:12,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 04:19:12,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:19:12,810 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:19:12,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:19:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:12,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:12,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:12,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:19:12,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:19:12,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:19:12,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:12,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:19:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:19:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:19:12,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:19:12,876 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 04:19:12,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069242446] [2020-10-15 04:19:12,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:19:12,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:19:12,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774385307] [2020-10-15 04:19:12,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:19:12,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:19:12,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:19:12,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:19:12,879 INFO L87 Difference]: Start difference. First operand 109967 states and 184975 transitions. Second operand 4 states. [2020-10-15 04:19:13,618 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-15 04:19:28,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:19:28,390 INFO L93 Difference]: Finished difference Result 204691 states and 343953 transitions. [2020-10-15 04:19:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:19:28,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-10-15 04:19:28,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:19:28,660 INFO L225 Difference]: With dead ends: 204691 [2020-10-15 04:19:28,660 INFO L226 Difference]: Without dead ends: 155857 [2020-10-15 04:19:28,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:19:28,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155857 states. [2020-10-15 04:19:39,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155857 to 155855. [2020-10-15 04:19:39,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155855 states. [2020-10-15 04:19:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155855 states to 155855 states and 261583 transitions. [2020-10-15 04:19:40,238 INFO L78 Accepts]: Start accepts. Automaton has 155855 states and 261583 transitions. Word has length 225 [2020-10-15 04:19:40,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:19:40,238 INFO L479 AbstractCegarLoop]: Abstraction has 155855 states and 261583 transitions. [2020-10-15 04:19:40,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:19:40,238 INFO L276 IsEmpty]: Start isEmpty. Operand 155855 states and 261583 transitions. [2020-10-15 04:19:40,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-15 04:19:40,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:19:40,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:40,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:19:40,332 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:19:40,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:19:40,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1151239274, now seen corresponding path program 1 times [2020-10-15 04:19:40,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:19:40,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712221022] [2020-10-15 04:19:40,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:19:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:40,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:40,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:43,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:43,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:43,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:45,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:45,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-15 04:19:45,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:19:45,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-15 04:19:45,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:45,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:45,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:19:45,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:19:45,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-15 04:19:45,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:19:46,243 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:19:46,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:19:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:46,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:46,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:46,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:19:46,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:19:46,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:19:46,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:46,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:46,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:19:46,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:19:46,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:19:46,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:19:46,367 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 04:19:46,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712221022] [2020-10-15 04:19:46,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:19:46,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:19:46,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205362118] [2020-10-15 04:19:46,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:19:46,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:19:46,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:19:46,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:19:46,369 INFO L87 Difference]: Start difference. First operand 155855 states and 261583 transitions. Second operand 5 states. [2020-10-15 04:20:11,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:20:11,114 INFO L93 Difference]: Finished difference Result 459547 states and 770533 transitions. [2020-10-15 04:20:11,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:20:11,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-15 04:20:11,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:20:11,566 INFO L225 Difference]: With dead ends: 459547 [2020-10-15 04:20:11,566 INFO L226 Difference]: Without dead ends: 306457 [2020-10-15 04:20:11,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:20:11,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306457 states.