/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SHALLOWEST --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 language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:41:40,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:41:40,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:41:40,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:41:40,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:41:40,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:41:40,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:41:40,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:41:40,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:41:40,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:41:40,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:41:40,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:41:40,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:41:40,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:41:40,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:41:40,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:41:40,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:41:40,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:41:40,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:41:40,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:41:40,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:41:40,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:41:40,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:41:40,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:41:40,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:41:40,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:41:40,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:41:40,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:41:40,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:41:40,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:41:40,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:41:40,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:41:40,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:41:40,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:41:40,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:41:40,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:41:40,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:41:40,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:41:40,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:41:40,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:41:40,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:41:40,750 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 [2020-10-27 04:41:40,778 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:41:40,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:41:40,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:41:40,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:41:40,781 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:41:40,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:41:40,782 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:41:40,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:41:40,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:41:40,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:41:40,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:41:40,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:41:40,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:41:40,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:41:40,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:41:40,784 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:41:40,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:41:40,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:41:40,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:41:40,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:41:40,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:41:40,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:41:40,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:41:40,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:41:40,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:41:40,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:41:40,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:41:40,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:41:40,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:41:40,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:41:41,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:41:41,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:41:41,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:41:41,191 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:41:41,191 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:41:41,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c [2020-10-27 04:41:41,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00003b43b/204ccf8f94754f7abe6869ad15d9384f/FLAGa25ba0a03 [2020-10-27 04:41:42,094 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:41:42,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c [2020-10-27 04:41:42,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00003b43b/204ccf8f94754f7abe6869ad15d9384f/FLAGa25ba0a03 [2020-10-27 04:41:42,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00003b43b/204ccf8f94754f7abe6869ad15d9384f [2020-10-27 04:41:42,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:41:42,367 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:41:42,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:41:42,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:41:42,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:41:42,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:41:42" (1/1) ... [2020-10-27 04:41:42,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b9dc2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:41:42, skipping insertion in model container [2020-10-27 04:41:42,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:41:42" (1/1) ... [2020-10-27 04:41:42,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:41:42,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:41:42,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:41:42,937 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:41:43,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:41:43,158 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:41:43,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:41:43 WrapperNode [2020-10-27 04:41:43,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:41:43,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:41:43,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:41:43,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:41:43,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:41:43" (1/1) ... [2020-10-27 04:41:43,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:41:43" (1/1) ... [2020-10-27 04:41:43,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:41:43" (1/1) ... [2020-10-27 04:41:43,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:41:43" (1/1) ... [2020-10-27 04:41:43,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:41:43" (1/1) ... [2020-10-27 04:41:43,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:41:43" (1/1) ... [2020-10-27 04:41:43,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:41:43" (1/1) ... [2020-10-27 04:41:43,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:41:43,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:41:43,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:41:43,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:41:43,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:41:43" (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 [2020-10-27 04:41:43,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:41:43,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:41:43,413 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:41:43,413 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:41:43,413 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:41:43,414 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:41:43,414 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:41:43,414 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 04:41:43,414 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:41:43,414 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:41:43,415 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:41:43,415 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:41:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:41:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:41:43,415 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:41:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:41:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:41:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:41:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:41:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:41:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:41:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:41:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:41:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:41:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:41:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 04:41:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:41:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:41:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:41:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:41:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:41:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:41:43,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:41:43,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:41:43,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:41:45,478 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:41:45,478 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:41:45,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:41:45 BoogieIcfgContainer [2020-10-27 04:41:45,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:41:45,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:41:45,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:41:45,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:41:45,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:41:42" (1/3) ... [2020-10-27 04:41:45,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e1bc23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:41:45, skipping insertion in model container [2020-10-27 04:41:45,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:41:43" (2/3) ... [2020-10-27 04:41:45,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e1bc23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:41:45, skipping insertion in model container [2020-10-27 04:41:45,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:41:45" (3/3) ... [2020-10-27 04:41:45,491 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c [2020-10-27 04:41:45,504 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:41:45,510 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:41:45,525 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:41:45,557 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:41:45,557 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:41:45,557 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:41:45,557 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:41:45,558 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:41:45,558 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:41:45,558 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:41:45,558 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:41:45,605 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-27 04:41:45,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 04:41:45,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:41:45,625 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] [2020-10-27 04:41:45,626 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:41:45,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:41:45,633 INFO L82 PathProgramCache]: Analyzing trace with hash -949781661, now seen corresponding path program 1 times [2020-10-27 04:41:45,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:41:45,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765594671] [2020-10-27 04:41:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:41:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:46,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:46,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:46,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 04:41:46,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:46,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-27 04:41:46,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:46,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:46,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 04:41:46,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:46,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:41:48,071 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 04:41:48,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:41:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:48,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:48,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:48,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:41:48,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:48,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 04:41:48,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:48,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:48,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:48,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:48,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:48,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:41:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:48,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:48,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:48,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:41:48,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:48,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 04:41:48,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:48,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:48,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:48,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:48,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:48,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:41:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:48,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:48,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:48,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:41:48,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:48,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:41:48,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:48,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:48,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:41:48,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:48,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:48,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:41:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:48,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:48,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:48,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:41:48,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:48,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:41:48,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:48,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:48,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:41:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:48,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:48,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:41:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:48,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:48,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:48,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:41:48,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:48,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:41:48,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:48,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:48,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:41:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:48,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:41:48,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:41:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:48,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:48,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:48,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:41:48,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:48,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:41:48,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:48,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:41:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:48,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:41:48,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:41:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:48,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:48,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:48,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:41:48,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:41:48,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:41:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:48,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:48,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 04:41:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:48,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:48,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:48,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:41:48,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:48,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:41:48,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:48,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:48,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:41:48,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:48,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:48,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:41:48,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765594671] [2020-10-27 04:41:48,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:41:48,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 04:41:48,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103919800] [2020-10-27 04:41:48,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:41:48,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:41:48,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:41:48,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:41:48,740 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 7 states. [2020-10-27 04:41:50,207 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:41:50,884 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:41:51,720 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:41:52,614 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:41:53,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:41:53,650 INFO L93 Difference]: Finished difference Result 552 states and 927 transitions. [2020-10-27 04:41:53,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:41:53,653 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-10-27 04:41:53,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:41:53,672 INFO L225 Difference]: With dead ends: 552 [2020-10-27 04:41:53,672 INFO L226 Difference]: Without dead ends: 390 [2020-10-27 04:41:53,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:41:53,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-27 04:41:53,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 354. [2020-10-27 04:41:53,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-27 04:41:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 609 transitions. [2020-10-27 04:41:53,811 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 609 transitions. Word has length 109 [2020-10-27 04:41:53,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:41:53,812 INFO L481 AbstractCegarLoop]: Abstraction has 354 states and 609 transitions. [2020-10-27 04:41:53,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:41:53,812 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 609 transitions. [2020-10-27 04:41:53,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 04:41:53,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:41:53,819 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] [2020-10-27 04:41:53,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:41:53,819 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:41:53,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:41:53,820 INFO L82 PathProgramCache]: Analyzing trace with hash 978491041, now seen corresponding path program 1 times [2020-10-27 04:41:53,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:41:53,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64669225] [2020-10-27 04:41:53,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:41:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:53,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:55,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:55,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 04:41:55,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:55,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1630 [2020-10-27 04:41:55,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:41:55,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 04:41:55,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:41:55,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:41:56,865 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 04:41:56,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:41:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:56,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:56,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:56,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:41:56,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:56,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:41:56,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:56,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:56,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:56,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:56,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:56,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:41:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:57,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:57,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:41:57,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:57,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-27 04:41:57,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:57,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:41:57,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:57,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:41:57,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:57,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:41:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:57,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:57,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:57,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:41:57,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:41:57,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:57,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:41:57,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:41:57,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:41:57,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:57,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:41:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:57,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:57,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:57,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:41:57,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:57,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:41:57,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:41:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:57,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:57,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:41:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:57,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:57,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:57,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:41:57,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:57,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:41:57,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:57,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:57,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:41:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:57,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:57,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:41:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:57,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:57,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:57,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:41:57,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:57,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:41:57,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:41:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:57,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:57,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:41:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:57,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:57,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:57,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:41:57,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:57,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:41:57,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:41:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:57,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:57,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 04:41:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:57,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:57,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:57,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:41:57,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:57,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:41:57,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:41:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:57,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:41:57,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64669225] [2020-10-27 04:41:57,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:41:57,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:41:57,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035290935] [2020-10-27 04:41:57,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:41:57,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:41:57,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:41:57,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:41:57,822 INFO L87 Difference]: Start difference. First operand 354 states and 609 transitions. Second operand 13 states. [2020-10-27 04:42:02,229 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 04:42:03,490 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 04:42:04,900 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 04:42:06,189 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 04:42:07,679 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:42:08,727 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:42:09,857 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:42:10,992 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:42:12,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:42:12,922 INFO L93 Difference]: Finished difference Result 552 states and 927 transitions. [2020-10-27 04:42:12,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:42:12,923 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 109 [2020-10-27 04:42:12,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:42:12,936 INFO L225 Difference]: With dead ends: 552 [2020-10-27 04:42:12,936 INFO L226 Difference]: Without dead ends: 400 [2020-10-27 04:42:12,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:42:12,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-27 04:42:13,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 354. [2020-10-27 04:42:13,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-27 04:42:13,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 563 transitions. [2020-10-27 04:42:13,028 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 563 transitions. Word has length 109 [2020-10-27 04:42:13,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:42:13,031 INFO L481 AbstractCegarLoop]: Abstraction has 354 states and 563 transitions. [2020-10-27 04:42:13,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:42:13,031 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 563 transitions. [2020-10-27 04:42:13,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 04:42:13,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:42:13,038 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] [2020-10-27 04:42:13,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:42:13,038 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:42:13,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:42:13,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1377379524, now seen corresponding path program 1 times [2020-10-27 04:42:13,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:42:13,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381913271] [2020-10-27 04:42:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:42:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:13,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:13,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:13,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:14,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:18,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:18,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 04:42:18,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:42:18,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:42:18,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:18,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:42:18,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 04:42:18,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:42:18,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:42:19,336 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 04:42:19,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:42:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:19,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:19,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:19,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:42:19,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:19,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:42:19,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:19,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:42:19,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:42:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:19,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:19,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:19,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 04:42:19,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:19,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 04:42:19,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:19,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:42:19,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:19,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 04:42:19,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:19,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 04:42:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:19,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:19,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:19,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:42:19,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:19,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:42:19,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:19,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:42:19,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:19,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:42:19,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:19,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 04:42:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:19,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:19,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:19,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:42:19,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:19,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:42:19,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:19,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:42:19,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:42:19,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:42:19,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:19,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 04:42:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:19,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:19,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:19,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:42:19,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:19,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:42:19,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:19,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:19,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:42:19,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:19,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:42:19,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 04:42:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:19,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:19,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:19,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:42:19,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:19,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:42:19,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:42:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:19,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:19,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-27 04:42:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:19,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:19,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:42:19,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:19,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:42:19,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:19,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:19,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:42:19,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:19,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:19,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-27 04:42:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:19,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:19,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:19,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:42:19,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:19,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:42:19,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:19,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:19,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:42:19,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:19,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:42:20,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381913271] [2020-10-27 04:42:20,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:42:20,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:42:20,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248753458] [2020-10-27 04:42:20,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:42:20,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:42:20,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:42:20,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:42:20,058 INFO L87 Difference]: Start difference. First operand 354 states and 563 transitions. Second operand 10 states. [2020-10-27 04:42:21,339 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 04:42:24,312 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:42:24,873 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:42:25,475 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 04:42:25,773 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:42:26,806 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 04:42:27,160 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:42:28,227 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 04:42:28,558 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:42:30,983 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 04:42:31,924 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:42:32,402 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 04:42:32,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:42:32,462 INFO L93 Difference]: Finished difference Result 717 states and 1149 transitions. [2020-10-27 04:42:32,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:42:32,465 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 154 [2020-10-27 04:42:32,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:42:32,471 INFO L225 Difference]: With dead ends: 717 [2020-10-27 04:42:32,471 INFO L226 Difference]: Without dead ends: 571 [2020-10-27 04:42:32,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-27 04:42:32,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-10-27 04:42:32,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 490. [2020-10-27 04:42:32,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-10-27 04:42:32,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 775 transitions. [2020-10-27 04:42:32,530 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 775 transitions. Word has length 154 [2020-10-27 04:42:32,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:42:32,531 INFO L481 AbstractCegarLoop]: Abstraction has 490 states and 775 transitions. [2020-10-27 04:42:32,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:42:32,531 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 775 transitions. [2020-10-27 04:42:32,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 04:42:32,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:42:32,535 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] [2020-10-27 04:42:32,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:42:32,536 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:42:32,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:42:32,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1561937794, now seen corresponding path program 1 times [2020-10-27 04:42:32,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:42:32,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68237264] [2020-10-27 04:42:32,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:42:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:32,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:32,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:32,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:33,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:33,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:37,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:37,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-27 04:42:37,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:42:37,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:42:37,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:42:37,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:42:37,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 04:42:37,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:38,875 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 04:42:38,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:42:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:38,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:38,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:38,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:42:38,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:38,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 04:42:38,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:38,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:38,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:38,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:38,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:38,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:42:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:38,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:39,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:39,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 04:42:39,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:39,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-27 04:42:39,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:39,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:42:39,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:42:39,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:39,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 04:42:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:39,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:39,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:39,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:42:39,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:39,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:42:39,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:39,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:42:39,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:39,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:42:39,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:39,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 04:42:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:39,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:39,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:39,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:42:39,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:39,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:42:39,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:39,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:42:39,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:42:39,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:42:39,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:39,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 04:42:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:39,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:39,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:39,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:42:39,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:42:39,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:42:39,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:39,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:39,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 04:42:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:39,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:39,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:39,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:42:39,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:39,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:42:39,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:39,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:39,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:42:39,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:39,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:39,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-27 04:42:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:39,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:39,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:39,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:42:39,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:39,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:42:39,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:39,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:39,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:42:39,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:39,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:39,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-27 04:42:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:39,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:39,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:39,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:42:39,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:39,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:42:39,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:39,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:39,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:42:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:39,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:42:39,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68237264] [2020-10-27 04:42:39,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:42:39,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:42:39,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824538005] [2020-10-27 04:42:39,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:42:39,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:42:39,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:42:39,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:42:39,779 INFO L87 Difference]: Start difference. First operand 490 states and 775 transitions. Second operand 10 states. [2020-10-27 04:42:41,049 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 04:42:42,294 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 290 [2020-10-27 04:42:43,619 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 294 [2020-10-27 04:42:47,086 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 292 DAG size of output: 288 [2020-10-27 04:42:53,680 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 04:42:54,249 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:42:54,708 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:42:55,299 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:42:56,340 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:42:56,798 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:42:57,202 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:42:58,203 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:42:58,686 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:42:59,082 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:43:00,078 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:43:00,563 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:43:00,949 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:43:02,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:43:02,865 INFO L93 Difference]: Finished difference Result 1902 states and 3030 transitions. [2020-10-27 04:43:02,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 04:43:02,866 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 157 [2020-10-27 04:43:02,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:43:02,877 INFO L225 Difference]: With dead ends: 1902 [2020-10-27 04:43:02,878 INFO L226 Difference]: Without dead ends: 1453 [2020-10-27 04:43:02,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:43:02,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2020-10-27 04:43:03,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1272. [2020-10-27 04:43:03,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2020-10-27 04:43:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 2004 transitions. [2020-10-27 04:43:03,055 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 2004 transitions. Word has length 157 [2020-10-27 04:43:03,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:43:03,056 INFO L481 AbstractCegarLoop]: Abstraction has 1272 states and 2004 transitions. [2020-10-27 04:43:03,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:43:03,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 2004 transitions. [2020-10-27 04:43:03,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 04:43:03,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:43:03,062 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] [2020-10-27 04:43:03,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:43:03,062 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:43:03,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:43:03,063 INFO L82 PathProgramCache]: Analyzing trace with hash 2031501910, now seen corresponding path program 1 times [2020-10-27 04:43:03,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:43:03,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044178843] [2020-10-27 04:43:03,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:43:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:03,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:03,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:03,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:03,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:03,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:04,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:08,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:08,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 04:43:08,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:43:08,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-27 04:43:08,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:43:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:43:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-27 04:43:08,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:09,474 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 04:43:09,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:43:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:09,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:09,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:09,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:43:09,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:09,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:43:09,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:09,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:09,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:43:09,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:09,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:09,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:43:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:09,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:09,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:09,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 04:43:09,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:09,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 04:43:09,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:09,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:43:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:43:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:43:09,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:09,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 04:43:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:09,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:09,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:09,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:43:09,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:09,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:43:09,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:09,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:43:09,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:43:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:43:09,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:09,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 04:43:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:09,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:09,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:09,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:43:09,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:09,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:43:09,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:43:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:43:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:43:09,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:10,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 04:43:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:10,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:10,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:43:10,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:10,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:43:10,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:43:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:10,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:10,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-27 04:43:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:10,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:10,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:10,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:43:10,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:10,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:43:10,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:10,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:10,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:43:10,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:10,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:10,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-27 04:43:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:10,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:10,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:10,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:43:10,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:10,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:43:10,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:10,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:10,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:43:10,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:10,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:10,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-27 04:43:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:10,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:10,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:10,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:43:10,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:10,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:43:10,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:10,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:10,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:43:10,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:10,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:43:10,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044178843] [2020-10-27 04:43:10,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:43:10,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:43:10,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394418526] [2020-10-27 04:43:10,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:43:10,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:43:10,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:43:10,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:43:10,338 INFO L87 Difference]: Start difference. First operand 1272 states and 2004 transitions. Second operand 10 states. [2020-10-27 04:43:11,676 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 04:43:12,948 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 290 [2020-10-27 04:43:14,439 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 294 [2020-10-27 04:43:17,542 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 292 DAG size of output: 288 [2020-10-27 04:43:23,669 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 04:43:24,249 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:43:24,679 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:43:25,087 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:43:26,469 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:43:27,067 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:43:27,399 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:43:28,460 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:43:29,147 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:43:29,508 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:43:30,544 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:43:31,158 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:43:31,544 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:43:33,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:43:33,408 INFO L93 Difference]: Finished difference Result 4755 states and 7489 transitions. [2020-10-27 04:43:33,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 04:43:33,410 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-10-27 04:43:33,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:43:33,430 INFO L225 Difference]: With dead ends: 4755 [2020-10-27 04:43:33,430 INFO L226 Difference]: Without dead ends: 3569 [2020-10-27 04:43:33,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:43:33,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2020-10-27 04:43:33,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 3177. [2020-10-27 04:43:33,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3177 states. [2020-10-27 04:43:33,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 4937 transitions. [2020-10-27 04:43:33,824 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 4937 transitions. Word has length 158 [2020-10-27 04:43:33,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:43:33,824 INFO L481 AbstractCegarLoop]: Abstraction has 3177 states and 4937 transitions. [2020-10-27 04:43:33,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:43:33,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 4937 transitions. [2020-10-27 04:43:33,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 04:43:33,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:43:33,834 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] [2020-10-27 04:43:33,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:43:33,835 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:43:33,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:43:33,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1620255544, now seen corresponding path program 1 times [2020-10-27 04:43:33,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:43:33,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294286392] [2020-10-27 04:43:33,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:43:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:33,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:33,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:34,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:34,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:38,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:38,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 04:43:38,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:43:38,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 04:43:38,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:43:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:43:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 04:43:38,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:40,238 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 04:43:40,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:43:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:40,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:40,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:40,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:43:40,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:40,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:43:40,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:40,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:40,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:43:40,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:40,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:40,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:43:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:40,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:40,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:40,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 04:43:40,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:40,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 04:43:40,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:43:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:43:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:43:40,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:40,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 04:43:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:40,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:40,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:40,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:43:40,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:40,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:43:40,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:40,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:43:40,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:43:40,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:43:40,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:40,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 04:43:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:40,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:40,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:40,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:43:40,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:40,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:43:40,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:40,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:43:40,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:43:40,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:43:40,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:43:40,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 04:43:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:40,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:40,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:40,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:43:40,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:40,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:43:40,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:40,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:40,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:43:40,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:40,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:43:40,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-27 04:43:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:40,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:40,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:40,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:43:40,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:40,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:43:40,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:40,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:40,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:43:40,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:40,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:43:41,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-27 04:43:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:41,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:41,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:41,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:43:41,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:41,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:43:41,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:41,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:41,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:43:41,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:41,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:43:41,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-27 04:43:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:43:41,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:43:41,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:43:41,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:43:41,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:43:41,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:43:41,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:43:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:43:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:43:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:43:41,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:43:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:43:41,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294286392] [2020-10-27 04:43:41,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:43:41,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:43:41,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741320052] [2020-10-27 04:43:41,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:43:41,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:43:41,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:43:41,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:43:41,215 INFO L87 Difference]: Start difference. First operand 3177 states and 4937 transitions. Second operand 10 states. [2020-10-27 04:43:42,449 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 04:43:43,636 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 04:43:44,915 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 04:43:46,236 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 288 [2020-10-27 04:43:52,156 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 04:43:52,811 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:43:53,213 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:43:54,504 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:43:54,880 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:43:56,026 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:43:56,576 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:43:57,866 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:43:58,389 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:44:00,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:44:00,642 INFO L93 Difference]: Finished difference Result 10166 states and 15918 transitions. [2020-10-27 04:44:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:44:00,650 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-10-27 04:44:00,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:44:00,688 INFO L225 Difference]: With dead ends: 10166 [2020-10-27 04:44:00,688 INFO L226 Difference]: Without dead ends: 7006 [2020-10-27 04:44:00,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:44:00,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7006 states. [2020-10-27 04:44:01,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7006 to 6276. [2020-10-27 04:44:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6276 states. [2020-10-27 04:44:01,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6276 states to 6276 states and 9624 transitions. [2020-10-27 04:44:01,469 INFO L78 Accepts]: Start accepts. Automaton has 6276 states and 9624 transitions. Word has length 158 [2020-10-27 04:44:01,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:44:01,469 INFO L481 AbstractCegarLoop]: Abstraction has 6276 states and 9624 transitions. [2020-10-27 04:44:01,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:44:01,470 INFO L276 IsEmpty]: Start isEmpty. Operand 6276 states and 9624 transitions. [2020-10-27 04:44:01,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 04:44:01,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:44:01,492 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] [2020-10-27 04:44:01,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:44:01,493 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:44:01,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:44:01,493 INFO L82 PathProgramCache]: Analyzing trace with hash 828547455, now seen corresponding path program 1 times [2020-10-27 04:44:01,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:44:01,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053001982] [2020-10-27 04:44:01,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:44:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:01,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:01,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:01,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:01,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:02,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:06,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:06,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 04:44:06,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:44:06,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 04:44:06,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:06,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:44:06,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:44:06,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 04:44:06,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:07,890 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 04:44:07,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:44:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:07,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:07,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:07,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:44:07,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:07,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 04:44:07,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:44:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:44:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:44:07,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:07,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:44:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:07,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:08,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:08,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 04:44:08,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:08,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-27 04:44:08,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:08,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:44:08,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:44:08,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 04:44:08,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:08,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 04:44:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:08,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:08,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:08,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:44:08,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:08,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:44:08,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:44:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:44:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:44:08,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:08,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 04:44:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:08,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:08,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:08,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:44:08,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:08,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 04:44:08,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:44:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:44:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:44:08,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:08,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 04:44:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:08,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:08,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:08,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:44:08,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:08,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:44:08,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:08,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:08,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:44:08,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:08,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:08,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-27 04:44:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:08,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:08,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:08,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:44:08,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:08,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:44:08,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:44:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:08,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:08,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 04:44:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:08,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:08,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:08,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:44:08,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:08,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:44:08,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:08,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:08,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:44:08,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:08,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:08,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 04:44:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:08,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:08,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:08,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:44:08,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:44:08,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:44:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:44:08,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053001982] [2020-10-27 04:44:08,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:44:08,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 04:44:08,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296918423] [2020-10-27 04:44:08,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:44:08,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:44:08,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:44:08,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:44:08,821 INFO L87 Difference]: Start difference. First operand 6276 states and 9624 transitions. Second operand 15 states. [2020-10-27 04:44:11,554 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 287 DAG size of output: 286 [2020-10-27 04:44:12,897 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 04:44:17,923 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 04:44:21,038 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 289 DAG size of output: 288 [2020-10-27 04:44:21,774 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 134 [2020-10-27 04:44:22,538 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 135 [2020-10-27 04:44:23,311 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 137 [2020-10-27 04:44:24,038 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 134 [2020-10-27 04:44:24,730 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 130 [2020-10-27 04:44:26,340 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 128 [2020-10-27 04:44:27,506 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 128 [2020-10-27 04:44:28,827 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 128 [2020-10-27 04:44:30,755 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 132 [2020-10-27 04:44:31,784 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 126 [2020-10-27 04:44:32,777 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 126 [2020-10-27 04:44:33,823 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 126 [2020-10-27 04:44:34,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:44:34,207 INFO L93 Difference]: Finished difference Result 10898 states and 17040 transitions. [2020-10-27 04:44:34,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 04:44:34,208 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 159 [2020-10-27 04:44:34,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:44:34,257 INFO L225 Difference]: With dead ends: 10898 [2020-10-27 04:44:34,257 INFO L226 Difference]: Without dead ends: 10051 [2020-10-27 04:44:34,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=271, Invalid=785, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:44:34,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10051 states. [2020-10-27 04:44:35,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10051 to 6602. [2020-10-27 04:44:35,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6602 states. [2020-10-27 04:44:35,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6602 states to 6602 states and 10116 transitions. [2020-10-27 04:44:35,135 INFO L78 Accepts]: Start accepts. Automaton has 6602 states and 10116 transitions. Word has length 159 [2020-10-27 04:44:35,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:44:35,136 INFO L481 AbstractCegarLoop]: Abstraction has 6602 states and 10116 transitions. [2020-10-27 04:44:35,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:44:35,136 INFO L276 IsEmpty]: Start isEmpty. Operand 6602 states and 10116 transitions. [2020-10-27 04:44:35,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 04:44:35,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:44:35,156 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] [2020-10-27 04:44:35,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:44:35,156 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:44:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:44:35,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1076693949, now seen corresponding path program 1 times [2020-10-27 04:44:35,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:44:35,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444250742] [2020-10-27 04:44:35,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:44:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:35,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:35,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:35,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:35,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:35,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:40,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:40,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 04:44:40,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:44:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 04:44:40,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:44:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:44:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 04:44:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:41,447 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 04:44:41,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:44:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:41,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:41,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:41,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:44:41,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:41,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:44:41,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:41,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:41,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:44:41,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:41,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:41,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:44:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:41,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:41,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:41,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 04:44:41,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:41,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 04:44:41,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:44:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:44:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:44:41,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:41,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 04:44:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:41,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:41,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:41,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:44:41,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:41,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:44:41,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:41,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:44:41,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:44:41,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:44:41,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:41,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 04:44:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:41,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:41,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:41,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:44:41,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:41,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:44:41,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:41,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:44:41,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:44:41,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:44:41,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:41,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 04:44:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:41,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:41,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:41,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:44:41,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:41,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:44:41,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:41,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:44:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:41,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:42,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-27 04:44:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:42,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:42,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:42,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:44:42,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:42,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:44:42,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:42,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:42,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:44:42,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:42,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:42,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 04:44:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:42,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:42,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:42,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:44:42,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:42,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:44:42,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:44:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:42,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:42,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 04:44:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:44:42,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:44:42,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:44:42,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:44:42,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:44:42,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:44:42,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:44:42,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:44:42,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:44:42,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:44:42,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:44:42,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:44:42,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444250742] [2020-10-27 04:44:42,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:44:42,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:44:42,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099920770] [2020-10-27 04:44:42,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:44:42,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:44:42,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:44:42,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:44:42,224 INFO L87 Difference]: Start difference. First operand 6602 states and 10116 transitions. Second operand 10 states. [2020-10-27 04:44:43,524 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 04:44:44,862 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 04:44:46,575 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 04:44:49,030 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 294 DAG size of output: 288 [2020-10-27 04:44:57,118 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 04:44:57,783 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:44:58,248 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:44:58,881 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:45:00,031 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:45:00,589 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:45:00,923 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:45:02,075 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:45:02,753 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:45:03,119 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:45:04,176 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:45:04,825 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:45:05,168 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:45:07,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:45:07,477 INFO L93 Difference]: Finished difference Result 25819 states and 39708 transitions. [2020-10-27 04:45:07,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 04:45:07,478 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 159 [2020-10-27 04:45:07,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:45:07,549 INFO L225 Difference]: With dead ends: 25819 [2020-10-27 04:45:07,549 INFO L226 Difference]: Without dead ends: 19449 [2020-10-27 04:45:07,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:45:07,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19449 states. [2020-10-27 04:45:09,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19449 to 17612. [2020-10-27 04:45:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17612 states. [2020-10-27 04:45:09,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17612 states to 17612 states and 26702 transitions. [2020-10-27 04:45:09,424 INFO L78 Accepts]: Start accepts. Automaton has 17612 states and 26702 transitions. Word has length 159 [2020-10-27 04:45:09,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:45:09,425 INFO L481 AbstractCegarLoop]: Abstraction has 17612 states and 26702 transitions. [2020-10-27 04:45:09,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:45:09,425 INFO L276 IsEmpty]: Start isEmpty. Operand 17612 states and 26702 transitions. [2020-10-27 04:45:09,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 04:45:09,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:45:09,471 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] [2020-10-27 04:45:09,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:45:09,472 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:45:09,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:45:09,472 INFO L82 PathProgramCache]: Analyzing trace with hash -2010937123, now seen corresponding path program 1 times [2020-10-27 04:45:09,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:45:09,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504552911] [2020-10-27 04:45:09,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:45:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:09,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:09,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:09,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:09,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:10,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:12,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:14,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:14,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 04:45:14,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:45:14,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 04:45:14,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:45:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:45:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 04:45:14,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:15,812 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 04:45:15,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:45:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:15,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:15,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:15,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:45:15,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:15,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:45:15,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:15,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:15,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:15,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:15,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:15,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:45:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:15,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:15,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 04:45:15,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:15,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-27 04:45:15,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:45:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:15,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:45:16,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:16,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 04:45:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:16,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:16,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:16,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:45:16,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:16,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:45:16,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:16,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:45:16,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:16,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:45:16,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:16,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 04:45:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:16,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:16,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:16,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:45:16,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:16,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:45:16,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:45:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:45:16,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:45:16,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:16,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 04:45:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:16,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:16,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:16,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:16,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:16,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:45:16,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:16,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:16,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:16,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:16,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:16,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-27 04:45:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:16,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:16,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:16,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:16,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:16,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:45:16,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:16,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:16,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 04:45:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:16,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:16,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:16,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:16,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:16,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:45:16,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:16,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:16,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 04:45:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:16,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:16,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:16,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:45:16,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:16,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:45:16,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:16,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:16,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:45:16,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:16,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:45:16,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504552911] [2020-10-27 04:45:16,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:45:16,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:45:16,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138820513] [2020-10-27 04:45:16,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:45:16,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:45:16,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:45:16,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:45:16,591 INFO L87 Difference]: Start difference. First operand 17612 states and 26702 transitions. Second operand 10 states. [2020-10-27 04:45:17,857 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 04:45:19,154 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 290 [2020-10-27 04:45:20,461 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 294 [2020-10-27 04:45:24,321 WARN L193 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 292 DAG size of output: 288