/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:55:24,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:55:24,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:55:24,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:55:24,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:55:24,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:55:24,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:55:24,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:55:24,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:55:24,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:55:24,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:55:24,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:55:24,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:55:24,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:55:24,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:55:24,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:55:24,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:55:24,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:55:24,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:55:24,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:55:24,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:55:24,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:55:24,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:55:24,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:55:24,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:55:24,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:55:24,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:55:24,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:55:24,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:55:24,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:55:24,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:55:24,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:55:24,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:55:24,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:55:24,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:55:24,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:55:24,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:55:24,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:55:24,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:55:24,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:55:24,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:55:24,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 13:55:24,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:55:24,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:55:24,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:55:24,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:55:24,400 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:55:24,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:55:24,401 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:55:24,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:55:24,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:55:24,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:55:24,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:55:24,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:55:24,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:55:24,403 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:55:24,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:55:24,404 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:55:24,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:55:24,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:55:24,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:55:24,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:55:24,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:55:24,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:55:24,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:55:24,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:55:24,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:55:24,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:55:24,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:55:24,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:55:24,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:55:24,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:55:24,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:55:24,696 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:55:24,699 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:55:24,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:55:24,701 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:55:24,702 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-13 13:55:24,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7d8ab25e/4b5529ee643648099759c472d2af9727/FLAG64bd51fc1 [2020-10-13 13:55:25,336 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:55:25,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-13 13:55:25,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7d8ab25e/4b5529ee643648099759c472d2af9727/FLAG64bd51fc1 [2020-10-13 13:55:25,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7d8ab25e/4b5529ee643648099759c472d2af9727 [2020-10-13 13:55:25,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:55:25,541 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:55:25,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:55:25,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:55:25,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:55:25,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:55:25" (1/1) ... [2020-10-13 13:55:25,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a7c6092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:25, skipping insertion in model container [2020-10-13 13:55:25,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:55:25" (1/1) ... [2020-10-13 13:55:25,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:55:25,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:55:26,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:55:26,555 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:55:27,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:55:27,083 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:55:27,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:27 WrapperNode [2020-10-13 13:55:27,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:55:27,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:55:27,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:55:27,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:55:27,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:27" (1/1) ... [2020-10-13 13:55:27,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:27" (1/1) ... [2020-10-13 13:55:27,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:27" (1/1) ... [2020-10-13 13:55:27,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:27" (1/1) ... [2020-10-13 13:55:27,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:27" (1/1) ... [2020-10-13 13:55:27,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:27" (1/1) ... [2020-10-13 13:55:27,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:27" (1/1) ... [2020-10-13 13:55:27,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:55:27,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:55:27,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:55:27,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:55:27,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:55:27,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:55:27,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:55:27,379 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:55:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:55:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:55:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:55:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:55:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:55:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:55:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:55:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:55:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:55:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:55:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:55:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:55:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 13:55:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:55:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:55:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:55:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:55:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:55:29,745 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:55:29,746 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 13:55:29,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:55:29 BoogieIcfgContainer [2020-10-13 13:55:29,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:55:29,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:55:29,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:55:29,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:55:29,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:55:25" (1/3) ... [2020-10-13 13:55:29,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25172894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:55:29, skipping insertion in model container [2020-10-13 13:55:29,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:55:27" (2/3) ... [2020-10-13 13:55:29,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25172894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:55:29, skipping insertion in model container [2020-10-13 13:55:29,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:55:29" (3/3) ... [2020-10-13 13:55:29,764 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-13 13:55:29,775 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:55:29,783 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:55:29,799 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:55:29,829 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:55:29,829 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:55:29,829 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:55:29,830 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:55:29,830 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:55:29,830 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:55:29,831 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:55:29,831 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:55:29,862 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states. [2020-10-13 13:55:29,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-13 13:55:29,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:29,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:29,887 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:29,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:29,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1304023224, now seen corresponding path program 1 times [2020-10-13 13:55:29,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:29,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550569022] [2020-10-13 13:55:29,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:31,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:32,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:32,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:33,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:33,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:33,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:33,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:33,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:34,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:34,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:34,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:34,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:35,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:35,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:35,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:36,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:36,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 13:55:36,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 13:55:36,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-13 13:55:36,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:36,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:55:36,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:55:36,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 13:55:36,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:55:36,815 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 13:55:36,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:36,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:36,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:36,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:36,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:36,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:55:36,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:36,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:36,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:36,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:36,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:37,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:37,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550569022] [2020-10-13 13:55:37,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:37,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:55:37,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551003165] [2020-10-13 13:55:37,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:55:37,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:37,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:55:37,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:55:37,101 INFO L87 Difference]: Start difference. First operand 712 states. Second operand 5 states. [2020-10-13 13:55:45,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:45,110 INFO L93 Difference]: Finished difference Result 2052 states and 3648 transitions. [2020-10-13 13:55:45,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:55:45,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 296 [2020-10-13 13:55:45,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:45,152 INFO L225 Difference]: With dead ends: 2052 [2020-10-13 13:55:45,152 INFO L226 Difference]: Without dead ends: 1383 [2020-10-13 13:55:45,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:55:45,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2020-10-13 13:55:45,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1381. [2020-10-13 13:55:45,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1381 states. [2020-10-13 13:55:45,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 2149 transitions. [2020-10-13 13:55:45,335 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 2149 transitions. Word has length 296 [2020-10-13 13:55:45,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:45,336 INFO L479 AbstractCegarLoop]: Abstraction has 1381 states and 2149 transitions. [2020-10-13 13:55:45,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:55:45,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 2149 transitions. [2020-10-13 13:55:45,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-13 13:55:45,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:45,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:45,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:55:45,345 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:45,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:45,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1728065758, now seen corresponding path program 1 times [2020-10-13 13:55:45,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:45,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745047037] [2020-10-13 13:55:45,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:45,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:45,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:47,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:47,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:47,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:47,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:47,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:47,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:48,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:50,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:50,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-13 13:55:50,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 13:55:50,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:55:50,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:50,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:55:50,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:55:50,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 13:55:50,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:55:51,092 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 13:55:51,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:51,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:51,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:51,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:51,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:51,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:55:51,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:51,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:51,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:55:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:51,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745047037] [2020-10-13 13:55:51,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:51,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:55:51,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227509032] [2020-10-13 13:55:51,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:55:51,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:51,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:55:51,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:55:51,403 INFO L87 Difference]: Start difference. First operand 1381 states and 2149 transitions. Second operand 5 states. [2020-10-13 13:55:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:58,724 INFO L93 Difference]: Finished difference Result 4067 states and 6326 transitions. [2020-10-13 13:55:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:55:58,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 298 [2020-10-13 13:55:58,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:58,746 INFO L225 Difference]: With dead ends: 4067 [2020-10-13 13:55:58,746 INFO L226 Difference]: Without dead ends: 2702 [2020-10-13 13:55:58,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:55:58,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2020-10-13 13:55:58,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 2700. [2020-10-13 13:55:58,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2700 states. [2020-10-13 13:55:58,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 4173 transitions. [2020-10-13 13:55:58,982 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 4173 transitions. Word has length 298 [2020-10-13 13:55:58,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:58,985 INFO L479 AbstractCegarLoop]: Abstraction has 2700 states and 4173 transitions. [2020-10-13 13:55:58,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:55:58,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 4173 transitions. [2020-10-13 13:55:59,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-13 13:55:59,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:59,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:59,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:55:59,003 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:59,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:59,004 INFO L82 PathProgramCache]: Analyzing trace with hash -801354565, now seen corresponding path program 1 times [2020-10-13 13:55:59,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:59,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997194734] [2020-10-13 13:55:59,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:59,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:59,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:59,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:59,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:59,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:00,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:00,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:00,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:00,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:00,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:00,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:01,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:01,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:04,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:04,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-13 13:56:04,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:56:04,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 13:56:04,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:04,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:56:04,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 13:56:04,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:56:04,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:56:04,624 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 13:56:04,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:04,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:04,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:04,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:04,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:04,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:56:04,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:04,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:04,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:04,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:04,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:04,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997194734] [2020-10-13 13:56:04,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:04,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:56:04,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407056922] [2020-10-13 13:56:04,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:56:04,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:04,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:56:04,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:04,791 INFO L87 Difference]: Start difference. First operand 2700 states and 4173 transitions. Second operand 4 states. [2020-10-13 13:56:10,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:10,080 INFO L93 Difference]: Finished difference Result 8035 states and 12413 transitions. [2020-10-13 13:56:10,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:56:10,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 300 [2020-10-13 13:56:10,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:10,107 INFO L225 Difference]: With dead ends: 8035 [2020-10-13 13:56:10,108 INFO L226 Difference]: Without dead ends: 5368 [2020-10-13 13:56:10,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:10,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5368 states. [2020-10-13 13:56:10,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5368 to 2714. [2020-10-13 13:56:10,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2714 states. [2020-10-13 13:56:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 4190 transitions. [2020-10-13 13:56:10,292 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 4190 transitions. Word has length 300 [2020-10-13 13:56:10,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:10,293 INFO L479 AbstractCegarLoop]: Abstraction has 2714 states and 4190 transitions. [2020-10-13 13:56:10,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:56:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 4190 transitions. [2020-10-13 13:56:10,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-13 13:56:10,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:10,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:10,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:56:10,303 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:10,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:10,304 INFO L82 PathProgramCache]: Analyzing trace with hash -237869296, now seen corresponding path program 1 times [2020-10-13 13:56:10,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:10,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236567878] [2020-10-13 13:56:10,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:10,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:10,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:13,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:13,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:13,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:13,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:13,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:13,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:14,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:14,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:15,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:15,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 13:56:15,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 13:56:15,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 13:56:15,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 13:56:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 13:56:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:16,030 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 13:56:16,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:16,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:16,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:16,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:16,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:16,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:56:16,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:16,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:16,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236567878] [2020-10-13 13:56:16,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:16,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:16,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518368464] [2020-10-13 13:56:16,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:16,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:16,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:16,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:16,221 INFO L87 Difference]: Start difference. First operand 2714 states and 4190 transitions. Second operand 5 states. [2020-10-13 13:56:22,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:22,880 INFO L93 Difference]: Finished difference Result 7778 states and 11944 transitions. [2020-10-13 13:56:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:22,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 302 [2020-10-13 13:56:22,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:22,902 INFO L225 Difference]: With dead ends: 7778 [2020-10-13 13:56:22,903 INFO L226 Difference]: Without dead ends: 5360 [2020-10-13 13:56:22,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:56:22,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5360 states. [2020-10-13 13:56:23,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5360 to 2978. [2020-10-13 13:56:23,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2978 states. [2020-10-13 13:56:23,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 4650 transitions. [2020-10-13 13:56:23,109 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 4650 transitions. Word has length 302 [2020-10-13 13:56:23,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:23,109 INFO L479 AbstractCegarLoop]: Abstraction has 2978 states and 4650 transitions. [2020-10-13 13:56:23,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:23,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 4650 transitions. [2020-10-13 13:56:23,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-13 13:56:23,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:23,120 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:23,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:56:23,121 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:23,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:23,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1909817833, now seen corresponding path program 1 times [2020-10-13 13:56:23,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:23,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190548407] [2020-10-13 13:56:23,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:23,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:23,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:23,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:23,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:23,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:23,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:24,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:24,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:24,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:24,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:24,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:24,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:28,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:28,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 13:56:28,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:56:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:56:28,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:56:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 13:56:28,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:28,627 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 13:56:28,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:28,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:28,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:28,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:28,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:28,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:56:28,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:28,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:28,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190548407] [2020-10-13 13:56:28,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:28,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:28,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328280151] [2020-10-13 13:56:28,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:28,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:28,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:28,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:28,814 INFO L87 Difference]: Start difference. First operand 2978 states and 4650 transitions. Second operand 5 states. [2020-10-13 13:56:34,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:34,739 INFO L93 Difference]: Finished difference Result 8601 states and 13389 transitions. [2020-10-13 13:56:34,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:34,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 302 [2020-10-13 13:56:34,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:34,764 INFO L225 Difference]: With dead ends: 8601 [2020-10-13 13:56:34,764 INFO L226 Difference]: Without dead ends: 5684 [2020-10-13 13:56:34,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:56:34,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5684 states. [2020-10-13 13:56:35,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5684 to 5682. [2020-10-13 13:56:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5682 states. [2020-10-13 13:56:35,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5682 states to 5682 states and 8779 transitions. [2020-10-13 13:56:35,148 INFO L78 Accepts]: Start accepts. Automaton has 5682 states and 8779 transitions. Word has length 302 [2020-10-13 13:56:35,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:35,150 INFO L479 AbstractCegarLoop]: Abstraction has 5682 states and 8779 transitions. [2020-10-13 13:56:35,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:35,150 INFO L276 IsEmpty]: Start isEmpty. Operand 5682 states and 8779 transitions. [2020-10-13 13:56:35,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-13 13:56:35,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:35,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:35,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:56:35,165 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:35,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:35,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1663458940, now seen corresponding path program 1 times [2020-10-13 13:56:35,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:35,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115716318] [2020-10-13 13:56:35,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:35,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:35,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:35,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:35,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:35,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:35,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:35,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:35,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:35,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:35,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:35,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:36,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:36,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:36,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:40,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 13:56:40,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:56:40,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 13:56:40,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 13:56:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 13:56:40,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:40,704 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 13:56:40,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:40,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:40,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:40,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:40,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:56:40,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:40,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:40,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:40,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:40,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:40,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115716318] [2020-10-13 13:56:40,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:40,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:40,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380225416] [2020-10-13 13:56:40,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:40,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:40,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:40,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:40,788 INFO L87 Difference]: Start difference. First operand 5682 states and 8779 transitions. Second operand 5 states. [2020-10-13 13:56:46,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:46,232 INFO L93 Difference]: Finished difference Result 15422 states and 23631 transitions. [2020-10-13 13:56:46,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:46,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2020-10-13 13:56:46,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:46,270 INFO L225 Difference]: With dead ends: 15422 [2020-10-13 13:56:46,270 INFO L226 Difference]: Without dead ends: 10591 [2020-10-13 13:56:46,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:56:46,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10591 states. [2020-10-13 13:56:46,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10591 to 6492. [2020-10-13 13:56:46,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6492 states. [2020-10-13 13:56:46,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6492 states to 6492 states and 10155 transitions. [2020-10-13 13:56:46,741 INFO L78 Accepts]: Start accepts. Automaton has 6492 states and 10155 transitions. Word has length 304 [2020-10-13 13:56:46,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:46,741 INFO L479 AbstractCegarLoop]: Abstraction has 6492 states and 10155 transitions. [2020-10-13 13:56:46,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:46,741 INFO L276 IsEmpty]: Start isEmpty. Operand 6492 states and 10155 transitions. [2020-10-13 13:56:46,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-13 13:56:46,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:46,757 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:46,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:56:46,758 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:46,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:46,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1346072560, now seen corresponding path program 1 times [2020-10-13 13:56:46,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:46,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252960943] [2020-10-13 13:56:46,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:46,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:46,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:46,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:48,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:51,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:51,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:51,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:51,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:51,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:51,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-13 13:56:51,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 13:56:51,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:56:51,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:51,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:56:51,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 13:56:51,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:56:51,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:52,209 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 13:56:52,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:52,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:52,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:52,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:52,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:52,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:56:52,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:52,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:52,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252960943] [2020-10-13 13:56:52,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:52,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:56:52,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663526894] [2020-10-13 13:56:52,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:56:52,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:52,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:56:52,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:52,282 INFO L87 Difference]: Start difference. First operand 6492 states and 10155 transitions. Second operand 4 states. [2020-10-13 13:56:56,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:56,309 INFO L93 Difference]: Finished difference Result 16161 states and 24692 transitions. [2020-10-13 13:56:56,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:56:56,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 306 [2020-10-13 13:56:56,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:56,335 INFO L225 Difference]: With dead ends: 16161 [2020-10-13 13:56:56,335 INFO L226 Difference]: Without dead ends: 11361 [2020-10-13 13:56:56,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:56,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11361 states. [2020-10-13 13:56:56,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11361 to 6689. [2020-10-13 13:56:56,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6689 states. [2020-10-13 13:56:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6689 states to 6689 states and 10407 transitions. [2020-10-13 13:56:56,800 INFO L78 Accepts]: Start accepts. Automaton has 6689 states and 10407 transitions. Word has length 306 [2020-10-13 13:56:56,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:56,800 INFO L479 AbstractCegarLoop]: Abstraction has 6689 states and 10407 transitions. [2020-10-13 13:56:56,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:56:56,800 INFO L276 IsEmpty]: Start isEmpty. Operand 6689 states and 10407 transitions. [2020-10-13 13:56:56,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-13 13:56:56,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:56,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:56,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:56:56,814 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:56,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:56,814 INFO L82 PathProgramCache]: Analyzing trace with hash -213345301, now seen corresponding path program 1 times [2020-10-13 13:56:56,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:56,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374272344] [2020-10-13 13:56:56,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:56,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:59,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:59,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:59,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:59,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:59,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:01,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:01,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-13 13:57:01,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 13:57:01,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:57:01,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:01,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:57:01,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 13:57:01,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 13:57:01,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:02,318 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 13:57:02,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:02,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:02,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:02,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:02,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:02,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:57:02,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:02,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:02,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:02,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:02,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:02,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374272344] [2020-10-13 13:57:02,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:02,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:02,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392758827] [2020-10-13 13:57:02,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:57:02,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:02,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:57:02,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:02,411 INFO L87 Difference]: Start difference. First operand 6689 states and 10407 transitions. Second operand 5 states. [2020-10-13 13:57:08,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:08,495 INFO L93 Difference]: Finished difference Result 17113 states and 26364 transitions. [2020-10-13 13:57:08,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:57:08,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 306 [2020-10-13 13:57:08,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:08,521 INFO L225 Difference]: With dead ends: 17113 [2020-10-13 13:57:08,521 INFO L226 Difference]: Without dead ends: 12201 [2020-10-13 13:57:08,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:57:08,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12201 states. [2020-10-13 13:57:09,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12201 to 8082. [2020-10-13 13:57:09,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8082 states. [2020-10-13 13:57:09,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8082 states to 8082 states and 12755 transitions. [2020-10-13 13:57:09,028 INFO L78 Accepts]: Start accepts. Automaton has 8082 states and 12755 transitions. Word has length 306 [2020-10-13 13:57:09,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:09,028 INFO L479 AbstractCegarLoop]: Abstraction has 8082 states and 12755 transitions. [2020-10-13 13:57:09,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:57:09,029 INFO L276 IsEmpty]: Start isEmpty. Operand 8082 states and 12755 transitions. [2020-10-13 13:57:09,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-13 13:57:09,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:09,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:09,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:57:09,039 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:09,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:09,039 INFO L82 PathProgramCache]: Analyzing trace with hash 990699628, now seen corresponding path program 1 times [2020-10-13 13:57:09,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:09,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002981431] [2020-10-13 13:57:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:09,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:09,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:09,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:09,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:09,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:09,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:09,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:10,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:10,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:10,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:10,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:10,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:11,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:11,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:12,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:12,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:12,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:14,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:14,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-13 13:57:14,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 13:57:14,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 13:57:14,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:14,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:57:14,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:57:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 13:57:14,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:57:14,744 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 13:57:14,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:14,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:14,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:14,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:14,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:14,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:57:14,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:14,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:14,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002981431] [2020-10-13 13:57:14,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:14,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:14,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521525763] [2020-10-13 13:57:14,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:57:14,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:14,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:57:14,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:14,868 INFO L87 Difference]: Start difference. First operand 8082 states and 12755 transitions. Second operand 5 states. [2020-10-13 13:57:22,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:22,014 INFO L93 Difference]: Finished difference Result 22392 states and 35087 transitions. [2020-10-13 13:57:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:57:22,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 308 [2020-10-13 13:57:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:22,047 INFO L225 Difference]: With dead ends: 22392 [2020-10-13 13:57:22,047 INFO L226 Difference]: Without dead ends: 15270 [2020-10-13 13:57:22,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:57:22,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15270 states. [2020-10-13 13:57:23,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15270 to 15268. [2020-10-13 13:57:23,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15268 states. [2020-10-13 13:57:23,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15268 states to 15268 states and 23817 transitions. [2020-10-13 13:57:23,111 INFO L78 Accepts]: Start accepts. Automaton has 15268 states and 23817 transitions. Word has length 308 [2020-10-13 13:57:23,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:23,112 INFO L479 AbstractCegarLoop]: Abstraction has 15268 states and 23817 transitions. [2020-10-13 13:57:23,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:57:23,112 INFO L276 IsEmpty]: Start isEmpty. Operand 15268 states and 23817 transitions. [2020-10-13 13:57:23,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-13 13:57:23,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:23,130 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:23,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:57:23,130 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:23,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:23,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1792066562, now seen corresponding path program 1 times [2020-10-13 13:57:23,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:23,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476446395] [2020-10-13 13:57:23,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:23,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:23,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:23,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:23,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:23,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:23,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:23,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:23,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:23,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:23,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:24,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:25,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:25,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:26,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:28,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:28,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 13:57:28,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 13:57:28,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 13:57:28,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:28,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:57:28,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:57:28,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:57:28,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:28,586 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 13:57:28,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:28,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:28,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:28,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:28,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:28,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:57:28,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:28,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:28,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:28,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:28,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:28,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476446395] [2020-10-13 13:57:28,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:28,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:57:28,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577929878] [2020-10-13 13:57:28,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:57:28,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:28,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:57:28,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:57:28,654 INFO L87 Difference]: Start difference. First operand 15268 states and 23817 transitions. Second operand 4 states. [2020-10-13 13:57:37,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:37,218 INFO L93 Difference]: Finished difference Result 44279 states and 68791 transitions. [2020-10-13 13:57:37,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:57:37,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 310 [2020-10-13 13:57:37,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:37,254 INFO L225 Difference]: With dead ends: 44279 [2020-10-13 13:57:37,255 INFO L226 Difference]: Without dead ends: 29841 [2020-10-13 13:57:37,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:57:37,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29841 states. [2020-10-13 13:57:38,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29841 to 15694. [2020-10-13 13:57:38,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15694 states. [2020-10-13 13:57:38,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15694 states to 15694 states and 24460 transitions. [2020-10-13 13:57:38,610 INFO L78 Accepts]: Start accepts. Automaton has 15694 states and 24460 transitions. Word has length 310 [2020-10-13 13:57:38,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:38,611 INFO L479 AbstractCegarLoop]: Abstraction has 15694 states and 24460 transitions. [2020-10-13 13:57:38,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:57:38,611 INFO L276 IsEmpty]: Start isEmpty. Operand 15694 states and 24460 transitions. [2020-10-13 13:57:38,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-13 13:57:38,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:38,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:38,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:57:38,629 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:38,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:38,630 INFO L82 PathProgramCache]: Analyzing trace with hash -645470471, now seen corresponding path program 1 times [2020-10-13 13:57:38,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:38,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389254804] [2020-10-13 13:57:38,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:38,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:38,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:38,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:38,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:39,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:39,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:39,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:39,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:39,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:39,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:39,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:39,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:42,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:42,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:42,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:43,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:43,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 13:57:43,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 13:57:43,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5164 [2020-10-13 13:57:43,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:57:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 13:57:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 13:57:43,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:44,271 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 13:57:44,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:44,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:44,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:44,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:44,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:44,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:57:44,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:44,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:44,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:44,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:44,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:44,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389254804] [2020-10-13 13:57:44,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:44,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:57:44,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766968934] [2020-10-13 13:57:44,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:57:44,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:44,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:57:44,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:57:44,370 INFO L87 Difference]: Start difference. First operand 15694 states and 24460 transitions. Second operand 4 states. [2020-10-13 13:57:53,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:53,086 INFO L93 Difference]: Finished difference Result 42384 states and 65373 transitions. [2020-10-13 13:57:53,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:57:53,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 310 [2020-10-13 13:57:53,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:53,117 INFO L225 Difference]: With dead ends: 42384 [2020-10-13 13:57:53,118 INFO L226 Difference]: Without dead ends: 30354 [2020-10-13 13:57:53,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:57:53,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30354 states. [2020-10-13 13:57:56,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30354 to 30352. [2020-10-13 13:57:56,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30352 states. [2020-10-13 13:57:56,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30352 states to 30352 states and 46949 transitions. [2020-10-13 13:57:56,256 INFO L78 Accepts]: Start accepts. Automaton has 30352 states and 46949 transitions. Word has length 310 [2020-10-13 13:57:56,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:56,256 INFO L479 AbstractCegarLoop]: Abstraction has 30352 states and 46949 transitions. [2020-10-13 13:57:56,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:57:56,256 INFO L276 IsEmpty]: Start isEmpty. Operand 30352 states and 46949 transitions. [2020-10-13 13:57:56,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-13 13:57:56,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:56,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:56,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:57:56,284 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:56,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:56,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1431110163, now seen corresponding path program 1 times [2020-10-13 13:57:56,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:56,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971711292] [2020-10-13 13:57:56,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:56,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:56,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:56,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:56,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:56,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:56,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:56,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:56,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:56,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:57,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:57,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:57,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:57,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:57,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:57,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:58,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:58,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:01,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:01,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-13 13:58:01,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 13:58:01,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 13:58:01,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:01,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:58:01,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:58:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:58:01,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:01,740 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 13:58:01,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:01,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:01,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:01,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:01,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:01,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:58:01,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:01,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:01,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:01,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:01,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:01,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:01,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971711292] [2020-10-13 13:58:01,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:01,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:58:01,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560264972] [2020-10-13 13:58:01,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:58:01,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:01,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:58:01,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:58:01,812 INFO L87 Difference]: Start difference. First operand 30352 states and 46949 transitions. Second operand 4 states. [2020-10-13 13:58:12,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:12,610 INFO L93 Difference]: Finished difference Result 86430 states and 132908 transitions. [2020-10-13 13:58:12,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:58:12,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 311 [2020-10-13 13:58:12,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:12,671 INFO L225 Difference]: With dead ends: 86430 [2020-10-13 13:58:12,671 INFO L226 Difference]: Without dead ends: 58513 [2020-10-13 13:58:12,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:58:12,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58513 states. [2020-10-13 13:58:15,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58513 to 30923. [2020-10-13 13:58:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30923 states. [2020-10-13 13:58:15,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30923 states to 30923 states and 47605 transitions. [2020-10-13 13:58:15,111 INFO L78 Accepts]: Start accepts. Automaton has 30923 states and 47605 transitions. Word has length 311 [2020-10-13 13:58:15,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:15,111 INFO L479 AbstractCegarLoop]: Abstraction has 30923 states and 47605 transitions. [2020-10-13 13:58:15,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:58:15,111 INFO L276 IsEmpty]: Start isEmpty. Operand 30923 states and 47605 transitions. [2020-10-13 13:58:15,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-13 13:58:15,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:15,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:15,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:58:15,139 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:15,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:15,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1660808364, now seen corresponding path program 1 times [2020-10-13 13:58:15,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:15,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433997563] [2020-10-13 13:58:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:15,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:15,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:15,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:15,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:15,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:15,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:15,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:15,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:15,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:15,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:15,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:15,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:15,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:16,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:16,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:17,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:17,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:19,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:20,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:20,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:20,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:20,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-13 13:58:20,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 13:58:20,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5246 [2020-10-13 13:58:20,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:58:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:58:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:58:20,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:20,886 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 13:58:20,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:20,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:20,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:20,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:20,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:20,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:58:20,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:20,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:20,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433997563] [2020-10-13 13:58:20,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:20,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:58:20,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872449050] [2020-10-13 13:58:20,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:58:20,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:20,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:58:20,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:58:20,959 INFO L87 Difference]: Start difference. First operand 30923 states and 47605 transitions. Second operand 5 states. [2020-10-13 13:58:28,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:28,792 INFO L93 Difference]: Finished difference Result 70154 states and 107782 transitions. [2020-10-13 13:58:28,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:58:28,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-13 13:58:28,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:28,829 INFO L225 Difference]: With dead ends: 70154 [2020-10-13 13:58:28,830 INFO L226 Difference]: Without dead ends: 37366 [2020-10-13 13:58:28,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:58:28,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37366 states. [2020-10-13 13:58:31,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37366 to 37364. [2020-10-13 13:58:31,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37364 states. [2020-10-13 13:58:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37364 states to 37364 states and 56717 transitions. [2020-10-13 13:58:31,618 INFO L78 Accepts]: Start accepts. Automaton has 37364 states and 56717 transitions. Word has length 312 [2020-10-13 13:58:31,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:31,618 INFO L479 AbstractCegarLoop]: Abstraction has 37364 states and 56717 transitions. [2020-10-13 13:58:31,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:58:31,619 INFO L276 IsEmpty]: Start isEmpty. Operand 37364 states and 56717 transitions. [2020-10-13 13:58:31,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-13 13:58:31,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:31,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:31,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:58:31,657 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:31,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:31,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1804934701, now seen corresponding path program 1 times [2020-10-13 13:58:31,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:31,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624272736] [2020-10-13 13:58:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:31,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:31,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:31,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:31,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:32,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:32,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:32,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:32,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:32,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:32,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:32,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:32,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:32,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:35,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:35,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:35,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:36,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:36,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-13 13:58:36,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 13:58:36,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:58:36,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:36,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:58:36,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 13:58:36,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 13:58:36,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:37,160 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 13:58:37,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:37,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:37,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:37,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:37,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:37,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:58:37,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:37,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:37,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:37,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:37,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:37,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:37,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624272736] [2020-10-13 13:58:37,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:37,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:58:37,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352107387] [2020-10-13 13:58:37,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:58:37,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:37,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:58:37,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:58:37,442 INFO L87 Difference]: Start difference. First operand 37364 states and 56717 transitions. Second operand 4 states. [2020-10-13 13:58:50,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:50,494 INFO L93 Difference]: Finished difference Result 92819 states and 139798 transitions. [2020-10-13 13:58:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:58:50,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 314 [2020-10-13 13:58:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:50,575 INFO L225 Difference]: With dead ends: 92819 [2020-10-13 13:58:50,575 INFO L226 Difference]: Without dead ends: 70609 [2020-10-13 13:58:50,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:58:50,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70609 states. [2020-10-13 13:58:55,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70609 to 70607. [2020-10-13 13:58:55,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70607 states. [2020-10-13 13:58:55,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70607 states to 70607 states and 106248 transitions. [2020-10-13 13:58:55,716 INFO L78 Accepts]: Start accepts. Automaton has 70607 states and 106248 transitions. Word has length 314 [2020-10-13 13:58:55,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:55,717 INFO L479 AbstractCegarLoop]: Abstraction has 70607 states and 106248 transitions. [2020-10-13 13:58:55,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:58:55,717 INFO L276 IsEmpty]: Start isEmpty. Operand 70607 states and 106248 transitions. [2020-10-13 13:58:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-13 13:58:55,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:55,768 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:55,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:58:55,768 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:55,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:55,769 INFO L82 PathProgramCache]: Analyzing trace with hash -2089271862, now seen corresponding path program 1 times [2020-10-13 13:58:55,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:55,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610488673] [2020-10-13 13:58:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:55,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:55,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:55,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:56,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:56,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:56,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:56,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:56,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:56,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:56,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:56,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:57,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:57,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:57,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:57,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:00,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:00,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-13 13:59:00,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 13:59:00,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 13:59:00,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:00,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:59:00,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 13:59:00,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:59:00,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:01,291 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 13:59:01,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:01,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:01,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:01,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:01,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:01,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:59:01,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:01,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:59:01,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610488673] [2020-10-13 13:59:01,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:01,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:59:01,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032960848] [2020-10-13 13:59:01,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:59:01,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:01,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:59:01,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:59:01,378 INFO L87 Difference]: Start difference. First operand 70607 states and 106248 transitions. Second operand 5 states.