/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=DEEPEST --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_floodmax.4.4.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:50:08,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:50:08,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:50:08,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:50:08,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:50:08,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:50:08,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:50:08,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:50:08,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:50:08,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:50:08,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:50:08,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:50:08,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:50:08,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:50:08,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:50:08,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:50:08,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:50:08,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:50:08,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:50:08,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:50:08,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:50:08,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:50:08,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:50:08,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:50:08,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:50:08,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:50:08,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:50:08,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:50:08,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:50:08,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:50:08,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:50:08,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:50:08,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:50:08,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:50:08,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:50:08,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:50:08,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:50:08,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:50:08,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:50:08,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:50:08,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:50:08,849 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 22:50:08,896 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:50:08,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:50:08,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:50:08,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:50:08,900 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:50:08,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:50:08,901 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:50:08,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:50:08,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:50:08,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:50:08,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:50:08,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:50:08,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:50:08,903 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:50:08,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:50:08,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:50:08,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:50:08,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:50:08,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:50:08,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:50:08,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:50:08,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:50:08,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:50:08,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:50:08,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:50:08,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:50:08,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:50:08,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:50:08,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:50:08,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:50:09,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:50:09,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:50:09,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:50:09,348 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:50:09,348 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:50:09,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c [2020-10-27 22:50:09,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7cfb677e/2f86a4e185a7477492d1a38b66541575/FLAG3476bd82c [2020-10-27 22:50:10,142 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:50:10,142 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c [2020-10-27 22:50:10,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7cfb677e/2f86a4e185a7477492d1a38b66541575/FLAG3476bd82c [2020-10-27 22:50:10,448 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7cfb677e/2f86a4e185a7477492d1a38b66541575 [2020-10-27 22:50:10,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:50:10,458 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:50:10,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:50:10,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:50:10,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:50:10,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:50:10" (1/1) ... [2020-10-27 22:50:10,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6c6ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:50:10, skipping insertion in model container [2020-10-27 22:50:10,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:50:10" (1/1) ... [2020-10-27 22:50:10,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:50:10,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:50:10,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:50:10,868 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:50:11,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:50:11,072 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:50:11,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:50:11 WrapperNode [2020-10-27 22:50:11,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:50:11,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:50:11,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:50:11,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:50:11,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:50:11" (1/1) ... [2020-10-27 22:50:11,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:50:11" (1/1) ... [2020-10-27 22:50:11,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:50:11" (1/1) ... [2020-10-27 22:50:11,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:50:11" (1/1) ... [2020-10-27 22:50:11,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:50:11" (1/1) ... [2020-10-27 22:50:11,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:50:11" (1/1) ... [2020-10-27 22:50:11,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:50:11" (1/1) ... [2020-10-27 22:50:11,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:50:11,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:50:11,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:50:11,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:50:11,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:50:11" (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 22:50:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:50:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:50:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:50:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 22:50:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 22:50:11,313 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 22:50:11,313 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 22:50:11,313 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 22:50:11,314 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 22:50:11,314 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 22:50:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:50:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 22:50:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:50:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:50:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:50:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:50:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 22:50:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 22:50:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 22:50:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 22:50:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 22:50:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 22:50:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 22:50:11,318 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 22:50:11,318 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 22:50:11,318 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 22:50:11,318 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 22:50:11,318 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 22:50:11,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:50:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:50:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:50:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:50:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:50:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:50:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:50:12,753 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:50:12,753 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 22:50:12,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:50:12 BoogieIcfgContainer [2020-10-27 22:50:12,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:50:12,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:50:12,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:50:12,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:50:12,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:50:10" (1/3) ... [2020-10-27 22:50:12,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a96b8c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:50:12, skipping insertion in model container [2020-10-27 22:50:12,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:50:11" (2/3) ... [2020-10-27 22:50:12,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a96b8c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:50:12, skipping insertion in model container [2020-10-27 22:50:12,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:50:12" (3/3) ... [2020-10-27 22:50:12,765 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.BOUNDED-8.pals.c [2020-10-27 22:50:12,777 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:50:12,783 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:50:12,795 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:50:12,826 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:50:12,826 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:50:12,827 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:50:12,827 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:50:12,827 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:50:12,827 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:50:12,827 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:50:12,827 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:50:12,853 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states. [2020-10-27 22:50:12,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 22:50:12,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:50:12,870 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] [2020-10-27 22:50:12,871 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:50:12,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:50:12,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1744427751, now seen corresponding path program 1 times [2020-10-27 22:50:12,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:50:12,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812746371] [2020-10-27 22:50:12,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:50:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:13,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:13,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:13,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 22:50:13,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:13,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-10-27 22:50:13,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:13,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:13,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 22:50:13,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:13,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:50:14,699 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:50:14,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:50:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:14,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:14,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:14,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:50:14,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:14,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 22:50:14,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:14,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:14,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:14,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:14,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:14,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:50:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:14,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:14,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:14,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:50:14,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:14,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-27 22:50:14,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:14,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:14,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:14,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:14,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:15,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:50:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:15,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:15,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:15,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:50:15,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:15,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:50:15,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:50:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:15,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:50:15,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 22:50:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:15,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:15,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:15,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:15,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:15,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:50:15,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:50:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:15,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:15,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 22:50:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:15,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:15,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:15,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:15,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:15,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:50:15,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:15,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:15,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:50:15,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:15,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:15,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 22:50:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:15,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:15,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:15,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:15,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:15,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:50:15,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:15,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:15,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:50:15,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:15,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:15,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 22:50:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:15,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:15,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:15,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:15,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:50:15,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:50:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:15,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:15,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 22:50:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:15,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:15,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:15,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:15,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:15,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:50:15,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:15,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:15,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:50:15,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:15,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:15,273 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 22:50:15,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812746371] [2020-10-27 22:50:15,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:50:15,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 22:50:15,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182703662] [2020-10-27 22:50:15,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 22:50:15,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:50:15,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 22:50:15,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:50:15,298 INFO L87 Difference]: Start difference. First operand 338 states. Second operand 7 states. [2020-10-27 22:50:16,244 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:16,671 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:17,115 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:17,589 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:18,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:50:18,078 INFO L93 Difference]: Finished difference Result 500 states and 839 transitions. [2020-10-27 22:50:18,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:50:18,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-27 22:50:18,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:50:18,098 INFO L225 Difference]: With dead ends: 500 [2020-10-27 22:50:18,098 INFO L226 Difference]: Without dead ends: 358 [2020-10-27 22:50:18,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:50:18,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-27 22:50:18,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 330. [2020-10-27 22:50:18,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-27 22:50:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 569 transitions. [2020-10-27 22:50:18,222 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 569 transitions. Word has length 105 [2020-10-27 22:50:18,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:50:18,223 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 569 transitions. [2020-10-27 22:50:18,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 22:50:18,223 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 569 transitions. [2020-10-27 22:50:18,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 22:50:18,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:50:18,236 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] [2020-10-27 22:50:18,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:50:18,237 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:50:18,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:50:18,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1496281257, now seen corresponding path program 1 times [2020-10-27 22:50:18,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:50:18,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135573400] [2020-10-27 22:50:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:50:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:18,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:19,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:19,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 22:50:19,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:19,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1385 [2020-10-27 22:50:19,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:19,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:50:19,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 22:50:19,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:50:19,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:50:20,507 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:50:20,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:50:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:20,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:20,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:20,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:50:20,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:20,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 22:50:20,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:20,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:20,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:50:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:20,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:20,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:20,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:50:20,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:20,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-27 22:50:20,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:20,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:20,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 22:50:20,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:50:20,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:50:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:20,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:20,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:20,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:50:20,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:20,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:50:20,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:20,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:20,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:50:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:50:20,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:50:21,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 22:50:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:21,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:21,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:21,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:21,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:21,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:50:21,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:21,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:21,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:50:21,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:21,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:21,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 22:50:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:21,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:21,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:21,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:21,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:21,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:50:21,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:21,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:21,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:50:21,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:21,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:21,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 22:50:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:21,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:21,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:21,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:21,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:21,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:50:21,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:21,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:21,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:50:21,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:21,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:21,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 22:50:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:21,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:21,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:21,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:21,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:21,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:50:21,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:50:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:21,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:21,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 22:50:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:21,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:21,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:21,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:21,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:21,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:50:21,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:21,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:21,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:50:21,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:21,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:21,362 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 22:50:21,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135573400] [2020-10-27 22:50:21,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:50:21,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 22:50:21,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519438782] [2020-10-27 22:50:21,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:50:21,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:50:21,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:50:21,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:50:21,370 INFO L87 Difference]: Start difference. First operand 330 states and 569 transitions. Second operand 13 states. [2020-10-27 22:50:24,179 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-27 22:50:24,776 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2020-10-27 22:50:25,491 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-27 22:50:26,075 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2020-10-27 22:50:26,832 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:27,303 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:27,759 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:28,236 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:29,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:50:29,008 INFO L93 Difference]: Finished difference Result 500 states and 839 transitions. [2020-10-27 22:50:29,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:50:29,014 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 105 [2020-10-27 22:50:29,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:50:29,019 INFO L225 Difference]: With dead ends: 500 [2020-10-27 22:50:29,019 INFO L226 Difference]: Without dead ends: 368 [2020-10-27 22:50:29,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:50:29,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-10-27 22:50:29,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 330. [2020-10-27 22:50:29,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-27 22:50:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 527 transitions. [2020-10-27 22:50:29,105 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 527 transitions. Word has length 105 [2020-10-27 22:50:29,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:50:29,107 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 527 transitions. [2020-10-27 22:50:29,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:50:29,107 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 527 transitions. [2020-10-27 22:50:29,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 22:50:29,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:50:29,116 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] [2020-10-27 22:50:29,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:50:29,117 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:50:29,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:50:29,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1781112204, now seen corresponding path program 1 times [2020-10-27 22:50:29,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:50:29,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58724517] [2020-10-27 22:50:29,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:50:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:29,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:29,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:29,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:30,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:34,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:34,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 22:50:34,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:50:34,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 22:50:34,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-27 22:50:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 22:50:34,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:50:34,790 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:50:34,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:50:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:34,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:34,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:34,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:50:34,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:34,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 22:50:34,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:34,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:34,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:34,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:50:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:34,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:35,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:35,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:50:35,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:35,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-27 22:50:35,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:35,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:35,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:35,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 22:50:35,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:35,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:50:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:35,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:35,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:35,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:50:35,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:35,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:50:35,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:50:35,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:35,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:50:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:35,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:35,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:35,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:35,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:35,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:50:35,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:35,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:35,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:35,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:50:35,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:35,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 22:50:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:35,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:35,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:35,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:35,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:50:35,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:50:35,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:35,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 22:50:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:35,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:35,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:35,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:35,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:35,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:50:35,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:35,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:35,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:50:35,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:35,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 22:50:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:35,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:35,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:35,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:35,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:35,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:50:35,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:35,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:35,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:50:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:50:35,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:35,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-27 22:50:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:35,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:35,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:35,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:35,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:35,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:50:35,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:35,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:50:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:35,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:35,419 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 22:50:35,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58724517] [2020-10-27 22:50:35,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:50:35,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:50:35,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213507101] [2020-10-27 22:50:35,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:50:35,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:50:35,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:50:35,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:50:35,423 INFO L87 Difference]: Start difference. First operand 330 states and 527 transitions. Second operand 10 states. [2020-10-27 22:50:36,011 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:50:37,960 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:50:38,342 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:50:38,761 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:50:39,213 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:39,497 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:50:40,289 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:40,591 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:40,888 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:41,622 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:50:41,777 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:50:41,959 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:50:42,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:50:42,010 INFO L93 Difference]: Finished difference Result 634 states and 1011 transitions. [2020-10-27 22:50:42,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:50:42,011 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 146 [2020-10-27 22:50:42,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:50:42,018 INFO L225 Difference]: With dead ends: 634 [2020-10-27 22:50:42,018 INFO L226 Difference]: Without dead ends: 508 [2020-10-27 22:50:42,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:50:42,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-27 22:50:42,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 446. [2020-10-27 22:50:42,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-10-27 22:50:42,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 713 transitions. [2020-10-27 22:50:42,100 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 713 transitions. Word has length 146 [2020-10-27 22:50:42,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:50:42,101 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 713 transitions. [2020-10-27 22:50:42,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:50:42,101 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 713 transitions. [2020-10-27 22:50:42,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 22:50:42,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:50:42,104 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] [2020-10-27 22:50:42,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:50:42,105 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:50:42,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:50:42,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1184615978, now seen corresponding path program 1 times [2020-10-27 22:50:42,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:50:42,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202779912] [2020-10-27 22:50:42,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:50:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:42,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:42,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:42,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:43,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:43,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:44,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:47,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:47,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 22:50:47,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:50:47,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 22:50:47,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 22:50:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 22:50:47,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:47,761 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:50:47,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:50:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:47,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:47,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:47,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:50:47,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:47,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:50:47,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:47,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:47,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:47,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:47,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:47,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:50:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:47,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:47,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:47,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:50:47,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:47,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 22:50:47,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 22:50:47,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:47,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:50:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:47,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:47,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:47,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:50:47,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:47,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:50:47,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:50:47,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:47,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:50:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:47,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:48,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:48,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:48,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:48,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:50:48,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:48,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:48,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:48,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:50:48,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:48,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 22:50:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:48,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:48,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:48,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:48,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:48,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:50:48,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:48,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:48,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:48,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:50:48,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:48,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 22:50:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:48,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:48,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:48,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:48,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:48,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:50:48,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:48,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:48,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:50:48,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:50:48,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:48,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 22:50:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:48,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:48,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:48,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:50:48,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:48,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:50:48,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:50:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:48,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:50:48,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-27 22:50:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:48,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:48,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:48,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:48,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:48,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:50:48,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:48,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:48,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:50:48,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:48,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:48,387 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 22:50:48,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202779912] [2020-10-27 22:50:48,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:50:48,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:50:48,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280638647] [2020-10-27 22:50:48,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:50:48,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:50:48,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:50:48,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:50:48,391 INFO L87 Difference]: Start difference. First operand 446 states and 713 transitions. Second operand 10 states. [2020-10-27 22:50:48,929 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:50:50,770 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:50:51,130 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:50:51,481 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:51,765 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:50:52,038 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:52,185 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:50:53,261 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:53,563 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:54,262 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:50:54,424 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:50:54,600 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:50:54,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:50:54,663 INFO L93 Difference]: Finished difference Result 1034 states and 1647 transitions. [2020-10-27 22:50:54,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:50:54,663 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-10-27 22:50:54,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:50:54,668 INFO L225 Difference]: With dead ends: 1034 [2020-10-27 22:50:54,668 INFO L226 Difference]: Without dead ends: 792 [2020-10-27 22:50:54,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:50:54,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-10-27 22:50:54,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 671. [2020-10-27 22:50:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-10-27 22:50:54,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1070 transitions. [2020-10-27 22:50:54,746 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1070 transitions. Word has length 149 [2020-10-27 22:50:54,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:50:54,746 INFO L481 AbstractCegarLoop]: Abstraction has 671 states and 1070 transitions. [2020-10-27 22:50:54,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:50:54,746 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1070 transitions. [2020-10-27 22:50:54,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 22:50:54,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:50:54,749 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] [2020-10-27 22:50:54,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:50:54,749 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:50:54,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:50:54,750 INFO L82 PathProgramCache]: Analyzing trace with hash 966460556, now seen corresponding path program 1 times [2020-10-27 22:50:54,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:50:54,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724586241] [2020-10-27 22:50:54,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:50:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:54,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:54,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:54,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:55,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:55,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:55,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:59,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:59,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 22:50:59,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:50:59,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 22:50:59,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:59,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:59,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-27 22:50:59,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 22:50:59,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:00,375 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:51:00,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:51:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:00,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:00,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:00,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:51:00,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:00,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:51:00,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:00,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:51:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:00,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:00,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:00,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:51:00,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:00,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 22:51:00,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 22:51:00,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:00,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:51:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:00,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:00,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:00,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:51:00,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:00,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:51:00,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:00,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:00,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:00,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:51:00,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:00,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:51:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:00,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:00,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:00,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:51:00,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:00,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:51:00,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:00,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:00,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:00,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:51:00,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:00,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 22:51:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:00,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:00,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:00,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:51:00,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:00,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:51:00,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:00,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:00,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:00,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:51:00,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:00,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 22:51:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:00,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:00,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:00,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:00,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:00,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:51:00,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:51:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:51:00,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:00,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 22:51:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:00,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:00,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:00,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:00,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:00,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:51:00,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:51:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:00,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:00,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 22:51:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:00,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:00,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:51:00,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:00,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:51:00,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:51:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:00,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:00,834 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 22:51:00,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724586241] [2020-10-27 22:51:00,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:51:00,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:51:00,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853544426] [2020-10-27 22:51:00,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:51:00,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:51:00,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:51:00,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:51:00,837 INFO L87 Difference]: Start difference. First operand 671 states and 1070 transitions. Second operand 9 states. [2020-10-27 22:51:01,399 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 22:51:03,457 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:51:03,845 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:51:04,354 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:51:04,527 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:04,741 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:05,388 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:05,678 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:05,994 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:51:06,264 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 22:51:06,457 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:51:06,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:51:06,964 INFO L93 Difference]: Finished difference Result 1334 states and 2132 transitions. [2020-10-27 22:51:06,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:51:06,965 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-10-27 22:51:06,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:51:06,972 INFO L225 Difference]: With dead ends: 1334 [2020-10-27 22:51:06,972 INFO L226 Difference]: Without dead ends: 1088 [2020-10-27 22:51:06,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:51:06,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2020-10-27 22:51:07,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 917. [2020-10-27 22:51:07,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-10-27 22:51:07,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1467 transitions. [2020-10-27 22:51:07,098 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1467 transitions. Word has length 152 [2020-10-27 22:51:07,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:51:07,098 INFO L481 AbstractCegarLoop]: Abstraction has 917 states and 1467 transitions. [2020-10-27 22:51:07,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:51:07,099 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1467 transitions. [2020-10-27 22:51:07,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 22:51:07,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:51:07,101 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] [2020-10-27 22:51:07,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:51:07,101 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:51:07,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:51:07,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1246117464, now seen corresponding path program 1 times [2020-10-27 22:51:07,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:51:07,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893025690] [2020-10-27 22:51:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:51:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:07,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:07,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:07,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:07,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:07,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:09,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:10,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:10,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:12,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:12,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 22:51:12,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 22:51:12,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 22:51:12,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 22:51:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 22:51:12,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:12,711 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:51:12,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:51:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:12,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:12,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:12,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:51:12,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:12,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:51:12,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:12,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:12,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:12,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:12,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:12,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:51:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:12,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:12,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:12,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:51:12,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:12,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 22:51:12,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:12,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:12,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:12,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 22:51:12,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:12,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:51:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:12,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:12,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:12,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:51:12,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:12,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:51:12,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:51:12,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:12,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:51:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:12,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:12,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:12,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:51:12,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:12,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:51:12,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:12,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:12,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:12,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:51:12,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:12,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 22:51:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:12,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:12,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:12,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:51:12,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:12,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:51:12,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:12,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:12,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:51:12,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:51:12,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:13,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 22:51:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:13,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:13,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:13,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:13,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:13,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:51:13,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:51:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:13,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:13,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 22:51:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:13,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:13,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:13,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:13,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:13,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:51:13,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:51:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:13,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:13,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 22:51:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:13,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:13,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:13,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:51:13,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:13,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:51:13,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:13,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:13,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:51:13,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:13,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:13,153 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 22:51:13,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893025690] [2020-10-27 22:51:13,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:51:13,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:51:13,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981996602] [2020-10-27 22:51:13,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:51:13,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:51:13,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:51:13,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:51:13,155 INFO L87 Difference]: Start difference. First operand 917 states and 1467 transitions. Second operand 10 states. [2020-10-27 22:51:13,755 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:51:15,643 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:51:16,019 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:16,370 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:51:16,925 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:51:17,312 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:17,458 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:51:18,670 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:19,349 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:51:19,524 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:51:19,739 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:51:20,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:51:20,042 INFO L93 Difference]: Finished difference Result 2548 states and 4042 transitions. [2020-10-27 22:51:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:51:20,047 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-10-27 22:51:20,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:51:20,058 INFO L225 Difference]: With dead ends: 2548 [2020-10-27 22:51:20,058 INFO L226 Difference]: Without dead ends: 1881 [2020-10-27 22:51:20,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:51:20,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-10-27 22:51:20,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1538. [2020-10-27 22:51:20,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2020-10-27 22:51:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2438 transitions. [2020-10-27 22:51:20,223 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2438 transitions. Word has length 152 [2020-10-27 22:51:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:51:20,224 INFO L481 AbstractCegarLoop]: Abstraction has 1538 states and 2438 transitions. [2020-10-27 22:51:20,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:51:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2438 transitions. [2020-10-27 22:51:20,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 22:51:20,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:51:20,227 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] [2020-10-27 22:51:20,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:51:20,227 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:51:20,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:51:20,228 INFO L82 PathProgramCache]: Analyzing trace with hash 524989468, now seen corresponding path program 1 times [2020-10-27 22:51:20,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:51:20,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933369738] [2020-10-27 22:51:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:51:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:20,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:20,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:20,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:20,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:20,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:21,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:21,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:25,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:25,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 22:51:25,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 22:51:25,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 22:51:25,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 22:51:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:51:25,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:25,836 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:51:25,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:51:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:25,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:25,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:25,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:51:25,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:25,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:51:25,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:25,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:25,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:51:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:25,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:25,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:25,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:51:25,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:25,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 22:51:25,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:25,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:25,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:25,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 22:51:25,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:25,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:51:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:25,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:25,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:25,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:51:25,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:25,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:51:25,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:25,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:25,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:25,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:51:25,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:26,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:51:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:26,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:26,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:26,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:51:26,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:26,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:51:26,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:26,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:26,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:26,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:51:26,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:26,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 22:51:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:26,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:26,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:26,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:26,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:26,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:51:26,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:26,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:26,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:51:26,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:51:26,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:26,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 22:51:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:26,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:26,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:26,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:26,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:26,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:51:26,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:26,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:26,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:51:26,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:26,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:26,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 22:51:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:26,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:26,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:26,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:26,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:26,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:51:26,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:51:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:26,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:26,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 22:51:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:26,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:26,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:26,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:51:26,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:26,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:51:26,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:51:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:26,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:26,285 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 22:51:26,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933369738] [2020-10-27 22:51:26,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:51:26,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:51:26,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109423502] [2020-10-27 22:51:26,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:51:26,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:51:26,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:51:26,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:51:26,288 INFO L87 Difference]: Start difference. First operand 1538 states and 2438 transitions. Second operand 9 states. [2020-10-27 22:51:26,897 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 22:51:28,912 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:51:29,417 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:51:29,555 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:29,841 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:30,123 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:30,868 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:31,178 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:51:31,423 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 22:51:31,627 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:51:32,127 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:51:32,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:51:32,779 INFO L93 Difference]: Finished difference Result 3176 states and 5040 transitions. [2020-10-27 22:51:32,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:51:32,780 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 155 [2020-10-27 22:51:32,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:51:32,793 INFO L225 Difference]: With dead ends: 3176 [2020-10-27 22:51:32,793 INFO L226 Difference]: Without dead ends: 2489 [2020-10-27 22:51:32,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:51:32,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2020-10-27 22:51:33,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2052. [2020-10-27 22:51:33,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2052 states. [2020-10-27 22:51:33,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 3250 transitions. [2020-10-27 22:51:33,027 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 3250 transitions. Word has length 155 [2020-10-27 22:51:33,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:51:33,027 INFO L481 AbstractCegarLoop]: Abstraction has 2052 states and 3250 transitions. [2020-10-27 22:51:33,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:51:33,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 3250 transitions. [2020-10-27 22:51:33,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 22:51:33,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:51:33,030 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] [2020-10-27 22:51:33,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:51:33,030 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:51:33,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:51:33,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1433990784, now seen corresponding path program 1 times [2020-10-27 22:51:33,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:51:33,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30967462] [2020-10-27 22:51:33,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:51:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:33,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:33,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:33,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:33,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:33,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:33,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:33,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:36,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:36,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:36,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:38,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:38,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 22:51:38,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 22:51:38,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 22:51:38,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:38,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:38,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 22:51:38,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 22:51:38,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:38,672 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:51:38,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:51:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:38,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:38,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:38,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:51:38,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:38,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:51:38,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:38,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:38,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:38,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:38,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:38,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:51:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:38,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:38,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:38,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:51:38,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:38,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 22:51:38,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 22:51:38,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:38,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:51:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:38,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:38,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:38,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:51:38,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:38,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:51:38,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:38,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:51:38,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:38,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:51:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:38,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:38,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:38,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:51:38,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:38,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:51:38,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:38,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:51:38,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:51:38,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:38,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 22:51:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:38,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:38,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:38,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:38,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:38,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:51:38,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:38,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:38,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:51:38,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:38,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:38,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 22:51:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:38,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:38,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:38,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:38,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:38,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:51:38,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:38,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:38,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:51:38,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:38,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:39,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 22:51:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:39,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:39,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:39,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:39,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:39,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:51:39,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:39,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:39,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:51:39,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:39,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:39,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 22:51:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:39,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:39,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:39,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:51:39,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:39,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:51:39,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:51:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:39,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:39,050 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 22:51:39,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30967462] [2020-10-27 22:51:39,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:51:39,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:51:39,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750034781] [2020-10-27 22:51:39,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:51:39,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:51:39,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:51:39,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:51:39,052 INFO L87 Difference]: Start difference. First operand 2052 states and 3250 transitions. Second operand 10 states. [2020-10-27 22:51:39,601 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:51:41,462 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:41,747 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:51:42,144 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:42,311 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:51:42,725 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:42,886 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:51:43,242 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:43,388 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:51:44,522 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:51:45,007 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:51:45,200 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:51:45,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:51:45,967 INFO L93 Difference]: Finished difference Result 6582 states and 10342 transitions. [2020-10-27 22:51:45,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:51:45,968 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 155 [2020-10-27 22:51:45,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:51:45,993 INFO L225 Difference]: With dead ends: 6582 [2020-10-27 22:51:45,993 INFO L226 Difference]: Without dead ends: 4756 [2020-10-27 22:51:46,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:51:46,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4756 states. [2020-10-27 22:51:46,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4756 to 3712. [2020-10-27 22:51:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3712 states. [2020-10-27 22:51:46,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 5720 transitions. [2020-10-27 22:51:46,418 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 5720 transitions. Word has length 155 [2020-10-27 22:51:46,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:51:46,419 INFO L481 AbstractCegarLoop]: Abstraction has 3712 states and 5720 transitions. [2020-10-27 22:51:46,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:51:46,419 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 5720 transitions. [2020-10-27 22:51:46,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 22:51:46,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:51:46,421 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 22:51:46,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:51:46,422 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:51:46,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:51:46,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1858678298, now seen corresponding path program 1 times [2020-10-27 22:51:46,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:51:46,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970193788] [2020-10-27 22:51:46,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:51:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:46,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:46,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:46,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:46,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:46,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:46,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:47,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:47,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:47,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:48,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:51,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:51,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 22:51:51,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 22:51:51,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 22:51:51,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:51,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:51,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 22:51:51,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 22:51:51,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:52,035 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:51:52,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:51:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:52,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:52,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:52,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:51:52,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:52,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:51:52,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:52,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:52,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:51:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:52,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:52,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:52,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:51:52,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:52,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 22:51:52,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 22:51:52,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:52,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:51:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:52,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:52,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:52,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:51:52,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:52,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:51:52,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:51:52,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:52,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:51:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:52,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:52,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:52,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:52,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:51:52,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:51:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:51:52,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:52,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 22:51:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:52,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:52,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:52,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:52,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:52,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:51:52,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:51:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:52,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:52,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 22:51:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:52,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:52,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:52,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:52,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:52,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:51:52,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:52,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:52,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:51:52,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:52,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:52,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-27 22:51:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:52,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:52,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:52,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:52,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:52,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:51:52,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:51:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:52,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:52,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-27 22:51:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:52,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:52,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:52,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:51:52,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:52,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:51:52,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:51:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:52,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:52,425 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 22:51:52,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970193788] [2020-10-27 22:51:52,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:51:52,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:51:52,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104568421] [2020-10-27 22:51:52,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:51:52,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:51:52,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:51:52,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:51:52,426 INFO L87 Difference]: Start difference. First operand 3712 states and 5720 transitions. Second operand 9 states. [2020-10-27 22:51:53,032 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 22:51:55,049 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:51:55,219 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:55,513 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:55,790 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:56,040 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:56,633 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:51:56,882 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 22:51:57,075 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:51:57,564 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:51:58,029 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:51:58,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:51:58,848 INFO L93 Difference]: Finished difference Result 8112 states and 12652 transitions. [2020-10-27 22:51:58,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:51:58,849 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-10-27 22:51:58,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:51:58,878 INFO L225 Difference]: With dead ends: 8112 [2020-10-27 22:51:58,878 INFO L226 Difference]: Without dead ends: 6242 [2020-10-27 22:51:58,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:51:58,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6242 states. [2020-10-27 22:51:59,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6242 to 5091. [2020-10-27 22:51:59,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5091 states. [2020-10-27 22:51:59,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5091 states to 5091 states and 7869 transitions. [2020-10-27 22:51:59,438 INFO L78 Accepts]: Start accepts. Automaton has 5091 states and 7869 transitions. Word has length 158 [2020-10-27 22:51:59,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:51:59,438 INFO L481 AbstractCegarLoop]: Abstraction has 5091 states and 7869 transitions. [2020-10-27 22:51:59,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:51:59,438 INFO L276 IsEmpty]: Start isEmpty. Operand 5091 states and 7869 transitions. [2020-10-27 22:51:59,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 22:51:59,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:51:59,441 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 22:51:59,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:51:59,442 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:51:59,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:51:59,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1472897994, now seen corresponding path program 1 times [2020-10-27 22:51:59,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:51:59,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127216372] [2020-10-27 22:51:59,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:51:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:59,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:59,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:59,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:59,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:00,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:00,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:00,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:00,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:00,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:04,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:04,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 22:52:04,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:52:04,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 22:52:04,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:52:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 22:52:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 22:52:04,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:05,050 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:52:05,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:52:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:05,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:05,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:05,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:52:05,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:05,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:52:05,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:05,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:52:05,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:52:05,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:52:05,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:05,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:52:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:05,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:05,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:05,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:52:05,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:05,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 22:52:05,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:05,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:52:05,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:52:05,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 22:52:05,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:05,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:52:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:05,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:05,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:05,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:52:05,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:05,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:52:05,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:05,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:52:05,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:52:05,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:52:05,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:05,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:52:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:05,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:05,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:05,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:52:05,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:05,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:52:05,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:05,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:52:05,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:52:05,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:52:05,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:52:05,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 22:52:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:05,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:05,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:05,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:52:05,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:05,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 22:52:05,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:52:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:52:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:52:05,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:05,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 22:52:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:05,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:05,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:05,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:52:05,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:05,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:52:05,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:05,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:52:05,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:52:05,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:52:05,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:05,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-27 22:52:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:05,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:05,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:05,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:52:05,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:05,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:52:05,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:52:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:52:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:52:05,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:05,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-27 22:52:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:05,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:05,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:05,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:52:05,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:05,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:52:05,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:52:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:52:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:52:05,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:05,839 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 22:52:05,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127216372] [2020-10-27 22:52:05,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:52:05,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 22:52:05,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144379807] [2020-10-27 22:52:05,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 22:52:05,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:52:05,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 22:52:05,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:52:05,844 INFO L87 Difference]: Start difference. First operand 5091 states and 7869 transitions. Second operand 16 states. [2020-10-27 22:52:06,441 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2020-10-27 22:52:08,823 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:52:09,371 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-27 22:52:09,928 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 22:52:10,251 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:52:10,598 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:52:10,933 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:52:11,200 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:52:11,500 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:52:12,228 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 275 [2020-10-27 22:52:12,800 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 22:52:13,005 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 22:52:13,354 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:52:13,513 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:52:13,869 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:52:14,417 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-27 22:52:14,587 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:52:14,769 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 22:52:14,945 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:52:15,430 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:52:15,632 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:52:15,853 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:52:16,337 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 22:52:16,899 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2020-10-27 22:52:17,076 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:52:17,230 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:52:17,409 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:52:17,574 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:52:17,743 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 22:52:18,296 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:52:18,534 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 22:52:18,799 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:52:18,966 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:52:19,895 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-27 22:52:20,076 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 22:52:20,282 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:52:20,444 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:52:20,598 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:52:20,771 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:52:20,959 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:52:21,158 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:52:21,324 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 22:52:22,395 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:52:22,563 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:52:22,731 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:52:24,249 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:52:24,419 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:52:24,654 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:52:24,815 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:52:25,019 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:52:25,302 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:52:25,822 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 22:52:26,059 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 22:52:26,252 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:52:26,514 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:52:26,980 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:52:27,193 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:52:28,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:52:28,584 INFO L93 Difference]: Finished difference Result 40109 states and 62564 transitions. [2020-10-27 22:52:28,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-27 22:52:28,585 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 158 [2020-10-27 22:52:28,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:52:28,736 INFO L225 Difference]: With dead ends: 40109 [2020-10-27 22:52:28,736 INFO L226 Difference]: Without dead ends: 35255 [2020-10-27 22:52:28,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1937 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=1166, Invalid=4534, Unknown=0, NotChecked=0, Total=5700 [2020-10-27 22:52:28,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35255 states. [2020-10-27 22:52:31,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35255 to 28557. [2020-10-27 22:52:31,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28557 states. [2020-10-27 22:52:31,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28557 states to 28557 states and 44137 transitions. [2020-10-27 22:52:31,400 INFO L78 Accepts]: Start accepts. Automaton has 28557 states and 44137 transitions. Word has length 158 [2020-10-27 22:52:31,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:52:31,401 INFO L481 AbstractCegarLoop]: Abstraction has 28557 states and 44137 transitions. [2020-10-27 22:52:31,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 22:52:31,401 INFO L276 IsEmpty]: Start isEmpty. Operand 28557 states and 44137 transitions. [2020-10-27 22:52:31,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 22:52:31,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:52:31,404 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 22:52:31,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:52:31,404 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:52:31,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:52:31,405 INFO L82 PathProgramCache]: Analyzing trace with hash -798704036, now seen corresponding path program 1 times [2020-10-27 22:52:31,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:52:31,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159624218] [2020-10-27 22:52:31,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:52:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:31,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:31,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:31,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:31,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:32,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:32,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:32,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:32,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:33,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:36,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:36,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 22:52:36,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:52:36,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 22:52:36,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:52:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 22:52:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 22:52:36,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:37,054 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:52:37,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:52:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:37,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:37,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:37,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:52:37,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:37,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:52:37,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:37,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:52:37,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:52:37,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:52:37,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:37,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:52:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:37,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:37,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:37,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:52:37,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:37,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 22:52:37,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:52:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:52:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 22:52:37,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:37,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:52:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:37,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:37,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:37,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:52:37,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:37,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:52:37,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:37,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:52:37,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:52:37,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:52:37,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:37,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:52:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:37,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:37,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:37,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:52:37,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:37,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:52:37,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:37,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:52:37,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:52:37,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:52:37,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:37,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 22:52:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:37,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:37,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:37,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:52:37,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:37,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:52:37,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:52:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:52:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:52:37,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:37,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 22:52:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:37,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:37,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:37,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:52:37,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:37,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:52:37,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:52:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:52:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:52:37,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:37,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-27 22:52:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:37,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:37,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:37,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:52:37,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:37,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:52:37,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:37,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:52:37,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:52:37,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:52:37,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:37,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-27 22:52:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:37,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:37,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:37,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:52:37,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:37,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:52:37,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:37,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:52:37,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 22:52:37,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:52:37,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:37,535 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 22:52:37,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159624218] [2020-10-27 22:52:37,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:52:37,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 22:52:37,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617854142] [2020-10-27 22:52:37,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:52:37,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:52:37,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:52:37,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:52:37,536 INFO L87 Difference]: Start difference. First operand 28557 states and 44137 transitions. Second operand 11 states. [2020-10-27 22:52:38,133 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 22:52:40,519 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:52:40,879 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 22:52:41,219 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:52:41,520 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:52:41,808 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:52:42,577 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:52:42,712 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:52:42,893 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:52:43,048 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:52:43,670 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:52:43,823 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:52:44,438 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:52:44,591 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:52:45,586 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-27 22:52:46,139 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2020-10-27 22:52:47,316 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:52:47,484 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:52:47,759 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:52:48,048 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:52:48,604 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:52:48,807 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:52:49,636 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:52:49,840 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:52:50,689 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:52:50,891 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:52:53,506 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:52:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:52:54,674 INFO L93 Difference]: Finished difference Result 105896 states and 164305 transitions. [2020-10-27 22:52:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 22:52:54,675 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 159 [2020-10-27 22:52:54,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:52:54,973 INFO L225 Difference]: With dead ends: 105896 [2020-10-27 22:52:54,973 INFO L226 Difference]: Without dead ends: 77576 [2020-10-27 22:52:55,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 22:52:55,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77576 states. [2020-10-27 22:52:59,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77576 to 63010. [2020-10-27 22:52:59,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63010 states. [2020-10-27 22:53:00,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63010 states to 63010 states and 97008 transitions. [2020-10-27 22:53:00,082 INFO L78 Accepts]: Start accepts. Automaton has 63010 states and 97008 transitions. Word has length 159 [2020-10-27 22:53:00,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:53:00,083 INFO L481 AbstractCegarLoop]: Abstraction has 63010 states and 97008 transitions. [2020-10-27 22:53:00,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:53:00,083 INFO L276 IsEmpty]: Start isEmpty. Operand 63010 states and 97008 transitions. [2020-10-27 22:53:00,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 22:53:00,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:53:00,085 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 22:53:00,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:53:00,086 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:53:00,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:53:00,086 INFO L82 PathProgramCache]: Analyzing trace with hash -479326618, now seen corresponding path program 1 times [2020-10-27 22:53:00,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:53:00,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818139179] [2020-10-27 22:53:00,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:53:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:00,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:00,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:00,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:00,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:00,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:01,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:01,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:01,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:01,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:05,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:05,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 22:53:05,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:53:05,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 22:53:05,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:05,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:53:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 22:53:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 22:53:05,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:05,728 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:53:05,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:53:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:05,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:05,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:05,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:53:05,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:53:05,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:53:05,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:05,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:53:05,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:53:05,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:53:05,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:05,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:53:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:05,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:05,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:05,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:53:05,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:53:05,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 22:53:05,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:05,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:53:05,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:53:05,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 22:53:05,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:05,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:53:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:05,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:05,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:05,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:53:05,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:53:05,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:53:05,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:53:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:53:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:53:05,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:05,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:53:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:05,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:05,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:05,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:53:05,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:53:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:53:05,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:53:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:53:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:53:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:05,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 22:53:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:05,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:05,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:05,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:53:05,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:53:05,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:53:05,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:05,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:53:05,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:53:05,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:53:05,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:05,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 22:53:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:05,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:05,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:05,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:53:05,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:53:05,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:53:05,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:53:05,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:53:05,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:53:05,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:06,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-27 22:53:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:06,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:06,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:06,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 22:53:06,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:53:06,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:53:06,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:53:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:53:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:53:06,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:06,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 22:53:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:06,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:06,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:06,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:53:06,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:53:06,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:53:06,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:53:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:53:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:53:06,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:06,117 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 22:53:06,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818139179] [2020-10-27 22:53:06,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:53:06,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:53:06,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231683765] [2020-10-27 22:53:06,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:53:06,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:53:06,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:53:06,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:53:06,119 INFO L87 Difference]: Start difference. First operand 63010 states and 97008 transitions. Second operand 9 states. [2020-10-27 22:53:06,704 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 22:53:08,763 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:53:09,102 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:53:09,399 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:53:09,761 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:53:09,916 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:53:10,307 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:53:10,661 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:53:11,029 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:53:11,422 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:53:11,666 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 22:53:17,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:53:17,818 INFO L93 Difference]: Finished difference Result 150209 states and 232630 transitions. [2020-10-27 22:53:17,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:53:17,819 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 159 [2020-10-27 22:53:17,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:53:18,493 INFO L225 Difference]: With dead ends: 150209 [2020-10-27 22:53:18,493 INFO L226 Difference]: Without dead ends: 111411 [2020-10-27 22:53:18,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:53:18,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111411 states. [2020-10-27 22:53:25,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111411 to 91479. [2020-10-27 22:53:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91479 states. [2020-10-27 22:53:25,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91479 states to 91479 states and 140013 transitions. [2020-10-27 22:53:25,723 INFO L78 Accepts]: Start accepts. Automaton has 91479 states and 140013 transitions. Word has length 159 [2020-10-27 22:53:25,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:53:25,724 INFO L481 AbstractCegarLoop]: Abstraction has 91479 states and 140013 transitions. [2020-10-27 22:53:25,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:53:25,724 INFO L276 IsEmpty]: Start isEmpty. Operand 91479 states and 140013 transitions. [2020-10-27 22:53:25,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 22:53:25,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:53:25,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:53:25,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 22:53:25,727 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:53:25,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:53:25,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1319206431, now seen corresponding path program 1 times [2020-10-27 22:53:25,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:53:25,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914842502] [2020-10-27 22:53:25,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:53:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:26,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:26,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:26,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:26,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:26,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:26,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:26,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:26,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:26,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:27,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:31,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:31,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 22:53:31,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 22:53:31,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 22:53:31,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:31,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:53:31,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 22:53:31,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 22:53:31,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:31,564 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:53:31,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:53:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:31,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:31,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:31,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:53:31,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:53:31,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:53:31,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:31,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:53:31,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:53:31,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:53:31,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:31,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:53:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:31,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:31,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:31,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:53:31,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:53:31,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 22:53:31,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:31,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:53:31,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:53:31,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 22:53:31,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:31,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:53:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:31,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:31,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:31,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:53:31,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:53:31,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:53:31,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:31,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:53:31,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:53:31,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:53:31,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:31,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:53:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:31,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:31,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:31,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:53:31,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:53:31,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:53:31,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:31,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:53:31,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:53:31,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:53:31,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:31,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 22:53:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:31,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:31,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:31,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:53:31,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:53:31,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:53:31,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:31,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:53:31,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:53:31,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:53:31,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:31,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 22:53:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:31,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:31,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:31,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:53:31,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:53:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:53:31,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:53:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:53:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:53:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:31,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-27 22:53:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:31,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:31,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:31,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:53:31,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:53:31,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:53:31,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:53:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:53:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:53:31,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:31,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-27 22:53:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:53:31,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:53:31,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:53:31,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:53:31,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:53:31,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:53:31,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:53:31,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:53:31,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:53:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:53:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:53:31,992 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 22:53:31,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914842502] [2020-10-27 22:53:31,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:53:31,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 22:53:31,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054672104] [2020-10-27 22:53:31,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:53:31,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:53:31,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:53:31,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:53:31,994 INFO L87 Difference]: Start difference. First operand 91479 states and 140013 transitions. Second operand 11 states. [2020-10-27 22:53:32,583 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-27 22:53:34,787 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:53:35,138 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:53:35,484 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:53:35,787 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:53:36,129 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:53:36,804 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:53:36,947 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:53:37,156 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:53:37,301 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:53:37,925 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:53:38,071 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:53:39,165 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2020-10-27 22:53:39,706 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-27 22:53:40,964 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:53:41,160 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:53:41,399 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:53:41,568 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:53:42,592 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:53:42,809 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:53:43,091 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:53:43,316 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:53:44,034 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:53:44,194 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:53:45,102 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 114