/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:45:01,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:45:01,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:45:02,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:45:02,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:45:02,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:45:02,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:45:02,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:45:02,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:45:02,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:45:02,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:45:02,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:45:02,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:45:02,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:45:02,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:45:02,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:45:02,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:45:02,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:45:02,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:45:02,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:45:02,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:45:02,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:45:02,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:45:02,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:45:02,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:45:02,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:45:02,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:45:02,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:45:02,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:45:02,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:45:02,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:45:02,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:45:02,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:45:02,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:45:02,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:45:02,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:45:02,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:45:02,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:45:02,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:45:02,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:45:02,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:45:02,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:45:02,126 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:45:02,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:45:02,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:45:02,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:45:02,130 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:45:02,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:45:02,131 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:45:02,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:45:02,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:45:02,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:45:02,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:45:02,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:45:02,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:45:02,136 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:45:02,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:45:02,136 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:45:02,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:45:02,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:45:02,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:45:02,137 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:45:02,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:45:02,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:45:02,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:45:02,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:45:02,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:45:02,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:45:02,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:45:02,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:45:02,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:45:02,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:45:02,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:45:02,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:45:02,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:45:02,663 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:45:02,663 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:45:02,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c [2020-10-27 04:45:02,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70c35dfea/2e40ddab0a144de5aa773c838944bb95/FLAG7707caa4f [2020-10-27 04:45:03,553 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:45:03,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c [2020-10-27 04:45:03,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70c35dfea/2e40ddab0a144de5aa773c838944bb95/FLAG7707caa4f [2020-10-27 04:45:03,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70c35dfea/2e40ddab0a144de5aa773c838944bb95 [2020-10-27 04:45:03,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:45:03,761 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:45:03,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:45:03,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:45:03,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:45:03,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:03" (1/1) ... [2020-10-27 04:45:03,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39fec2a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:03, skipping insertion in model container [2020-10-27 04:45:03,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:03" (1/1) ... [2020-10-27 04:45:03,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:45:03,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:45:04,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:45:04,433 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:45:04,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:45:04,628 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:45:04,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:04 WrapperNode [2020-10-27 04:45:04,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:45:04,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:45:04,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:45:04,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:45:04,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:04" (1/1) ... [2020-10-27 04:45:04,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:04" (1/1) ... [2020-10-27 04:45:04,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:04" (1/1) ... [2020-10-27 04:45:04,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:04" (1/1) ... [2020-10-27 04:45:04,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:04" (1/1) ... [2020-10-27 04:45:04,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:04" (1/1) ... [2020-10-27 04:45:04,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:04" (1/1) ... [2020-10-27 04:45:04,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:45:04,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:45:04,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:45:04,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:45:04,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:45:04,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:45:04,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:45:04,945 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:45:04,945 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:45:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:45:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:45:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:45:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 04:45:04,947 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-27 04:45:04,948 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:45:04,949 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:45:04,949 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:45:04,949 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:45:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:45:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:45:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:45:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:45:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:45:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:45:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:45:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:45:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:45:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:45:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:45:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:45:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:45:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 04:45:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 04:45:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:45:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:45:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:45:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:45:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:45:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:45:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:45:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:45:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:45:07,251 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:45:07,252 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:45:07,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:07 BoogieIcfgContainer [2020-10-27 04:45:07,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:45:07,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:45:07,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:45:07,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:45:07,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:45:03" (1/3) ... [2020-10-27 04:45:07,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670f5359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:07, skipping insertion in model container [2020-10-27 04:45:07,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:04" (2/3) ... [2020-10-27 04:45:07,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670f5359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:07, skipping insertion in model container [2020-10-27 04:45:07,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:07" (3/3) ... [2020-10-27 04:45:07,267 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c [2020-10-27 04:45:07,281 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:45:07,287 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:45:07,302 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:45:07,338 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:45:07,338 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:45:07,339 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:45:07,339 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:45:07,339 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:45:07,339 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:45:07,339 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:45:07,339 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:45:07,375 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states. [2020-10-27 04:45:07,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 04:45:07,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:45:07,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:45:07,411 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:45:07,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:45:07,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1718594068, now seen corresponding path program 1 times [2020-10-27 04:45:07,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:45:07,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334545337] [2020-10-27 04:45:07,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:45:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:08,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:09,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:09,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 04:45:09,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:09,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-10-27 04:45:09,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:09,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:09,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-27 04:45:09,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:09,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 04:45:10,252 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:45:10,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:45:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:10,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:10,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:10,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:45:10,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:10,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 04:45:10,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:10,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:45:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:10,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:10,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:10,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 04:45:10,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:10,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-27 04:45:10,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:10,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:10,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:10,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:10,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:45:10,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 04:45:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:10,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:10,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:10,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:45:10,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:10,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:45:10,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:10,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:45:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:10,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:45:10,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 04:45:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:10,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:10,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:10,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:10,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:10,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:45:10,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:10,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:45:10,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 04:45:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:10,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:10,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:10,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:10,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:10,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:45:10,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:10,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:10,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:10,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:10,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:45:10,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 04:45:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:10,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:10,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:10,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:10,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:10,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:45:10,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:10,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:10,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:10,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 04:45:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:10,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:10,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:10,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:10,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:10,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:45:10,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:10,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:10,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:10,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:10,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:11,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 04:45:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:11,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:11,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:11,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:11,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:11,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:45:11,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:11,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:11,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:11,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:11,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:11,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-27 04:45:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:11,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:11,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:11,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:45:11,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:11,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:45:11,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:45:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:11,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:11,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:45:11,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334545337] [2020-10-27 04:45:11,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:45:11,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:45:11,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299303001] [2020-10-27 04:45:11,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:45:11,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:45:11,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:45:11,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:45:11,180 INFO L87 Difference]: Start difference. First operand 777 states. Second operand 8 states. [2020-10-27 04:45:14,847 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:15,617 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:16,548 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:17,409 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:18,289 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:19,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:45:19,503 INFO L93 Difference]: Finished difference Result 1056 states and 1861 transitions. [2020-10-27 04:45:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:45:19,505 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-10-27 04:45:19,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:45:19,540 INFO L225 Difference]: With dead ends: 1056 [2020-10-27 04:45:19,541 INFO L226 Difference]: Without dead ends: 834 [2020-10-27 04:45:19,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:45:19,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-10-27 04:45:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 769. [2020-10-27 04:45:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-27 04:45:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1388 transitions. [2020-10-27 04:45:19,860 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1388 transitions. Word has length 188 [2020-10-27 04:45:19,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:45:19,864 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1388 transitions. [2020-10-27 04:45:19,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:45:19,864 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1388 transitions. [2020-10-27 04:45:19,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 04:45:19,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:45:19,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:45:19,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:45:19,887 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:45:19,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:45:19,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1274693394, now seen corresponding path program 1 times [2020-10-27 04:45:19,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:45:19,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229914907] [2020-10-27 04:45:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:45:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:20,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:23,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:23,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 04:45:23,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:23,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3208 [2020-10-27 04:45:23,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:45:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 04:45:23,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:45:23,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:45:24,540 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:45:24,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:45:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:24,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:24,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:24,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:45:24,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:24,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 04:45:24,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:24,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:24,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:24,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:24,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:24,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:45:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:24,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:25,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:25,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 04:45:25,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:25,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-10-27 04:45:25,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:45:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 04:45:25,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:25,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 04:45:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:25,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:25,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:25,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:45:25,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:25,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:45:25,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:45:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:45:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:45:25,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:25,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 04:45:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:25,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:25,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:25,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:25,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:25,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:45:25,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:25,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:25,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 04:45:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:25,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:25,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:25,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:25,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:25,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:45:25,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:25,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:25,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:25,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:25,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:25,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 04:45:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:25,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:25,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:25,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:25,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:25,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:45:25,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:25,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:25,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 04:45:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:25,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:25,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:25,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:25,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:25,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:45:25,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:25,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:25,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:25,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:25,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:25,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 04:45:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:25,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:25,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:25,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:25,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:45:25,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:25,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-27 04:45:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:25,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:25,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:25,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:45:25,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:25,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:45:25,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:45:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:25,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:25,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:45:25,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229914907] [2020-10-27 04:45:25,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:45:25,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:45:25,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359065141] [2020-10-27 04:45:25,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:45:25,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:45:25,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:45:25,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:45:25,966 INFO L87 Difference]: Start difference. First operand 769 states and 1388 transitions. Second operand 14 states. [2020-10-27 04:45:36,030 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 04:45:37,222 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 04:45:38,630 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:45:39,833 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 04:45:41,444 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:42,404 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:43,610 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:44,668 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:45,756 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:45:47,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:45:47,564 INFO L93 Difference]: Finished difference Result 1057 states and 1863 transitions. [2020-10-27 04:45:47,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:45:47,565 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 188 [2020-10-27 04:45:47,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:45:47,573 INFO L225 Difference]: With dead ends: 1057 [2020-10-27 04:45:47,573 INFO L226 Difference]: Without dead ends: 845 [2020-10-27 04:45:47,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:45:47,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-10-27 04:45:47,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 769. [2020-10-27 04:45:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-27 04:45:47,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1323 transitions. [2020-10-27 04:45:47,719 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1323 transitions. Word has length 188 [2020-10-27 04:45:47,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:45:47,720 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1323 transitions. [2020-10-27 04:45:47,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:45:47,720 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1323 transitions. [2020-10-27 04:45:47,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 04:45:47,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:45:47,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:45:47,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:45:47,726 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:45:47,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:45:47,727 INFO L82 PathProgramCache]: Analyzing trace with hash 595284816, now seen corresponding path program 1 times [2020-10-27 04:45:47,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:45:47,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308222171] [2020-10-27 04:45:47,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:45:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:47,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:48,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:48,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:49,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:52,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:52,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-27 04:45:52,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:45:52,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 04:45:52,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:45:52,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 04:45:52,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 04:45:52,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:45:54,030 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:45:54,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:45:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:54,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:54,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:54,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:45:54,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:54,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:45:54,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:54,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:54,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:45:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:54,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:54,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:54,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:45:54,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:54,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-27 04:45:54,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:54,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:45:54,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:54,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 04:45:54,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:54,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:45:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:54,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:54,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:54,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:45:54,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:54,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:45:54,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:45:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:54,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:45:54,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:54,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:45:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:54,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:54,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:54,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:54,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:54,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:45:54,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:45:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:45:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:45:54,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:54,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 04:45:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:54,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:54,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:54,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:54,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:54,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:45:54,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:54,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:54,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 04:45:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:54,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:54,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:54,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:54,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 04:45:54,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:54,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:54,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:54,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:54,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-27 04:45:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:54,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:54,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:54,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:54,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:54,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:45:54,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:54,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:54,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:54,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:54,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:54,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-27 04:45:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:54,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:54,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:54,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:54,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:54,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:45:54,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:54,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:54,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-27 04:45:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:54,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:54,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:55,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:45:55,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:55,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:45:55,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:55,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:55,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:45:55,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:55,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:55,117 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 04:45:55,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308222171] [2020-10-27 04:45:55,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:45:55,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:45:55,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439998739] [2020-10-27 04:45:55,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:45:55,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:45:55,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:45:55,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:45:55,121 INFO L87 Difference]: Start difference. First operand 769 states and 1323 transitions. Second operand 11 states. [2020-10-27 04:45:56,252 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 04:46:03,278 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:03,885 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:46:04,490 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:46:04,782 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:05,819 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:46:06,138 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:07,263 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:46:07,654 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:08,858 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:46:09,248 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:11,854 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 04:46:12,678 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:46:13,179 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:46:13,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:46:13,239 INFO L93 Difference]: Finished difference Result 1308 states and 2215 transitions. [2020-10-27 04:46:13,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:46:13,240 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 252 [2020-10-27 04:46:13,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:46:13,248 INFO L225 Difference]: With dead ends: 1308 [2020-10-27 04:46:13,248 INFO L226 Difference]: Without dead ends: 1102 [2020-10-27 04:46:13,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:46:13,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2020-10-27 04:46:13,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 963. [2020-10-27 04:46:13,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-10-27 04:46:13,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1636 transitions. [2020-10-27 04:46:13,431 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1636 transitions. Word has length 252 [2020-10-27 04:46:13,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:46:13,432 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1636 transitions. [2020-10-27 04:46:13,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:46:13,432 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1636 transitions. [2020-10-27 04:46:13,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-27 04:46:13,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:46:13,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:46:13,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:46:13,440 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:46:13,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:46:13,440 INFO L82 PathProgramCache]: Analyzing trace with hash -609344280, now seen corresponding path program 1 times [2020-10-27 04:46:13,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:46:13,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178028853] [2020-10-27 04:46:13,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:46:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:13,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:13,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:13,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:14,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:14,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:15,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:18,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:18,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-27 04:46:18,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:46:18,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 04:46:18,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:46:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:46:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-27 04:46:18,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:19,852 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:46:19,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:46:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:19,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:19,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:19,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:46:19,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:19,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:46:19,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:19,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:19,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:19,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:19,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:46:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:20,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:20,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:20,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:46:20,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-27 04:46:20,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:20,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:46:20,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:20,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:46:20,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:20,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:46:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:20,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:20,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:46:20,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:20,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:46:20,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:20,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:46:20,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:20,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:46:20,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:20,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:46:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:20,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:20,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:20,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:46:20,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:20,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:46:20,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:20,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:46:20,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:46:20,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:46:20,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:21,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 04:46:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:21,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:21,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:21,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:21,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:21,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:46:21,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:21,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:21,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:21,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:21,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:21,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-27 04:46:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:21,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:21,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:21,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:21,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:21,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:46:21,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:21,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:21,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:21,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:21,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-27 04:46:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:21,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:21,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:21,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:21,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:21,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:46:21,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:21,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:21,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:21,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-27 04:46:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:21,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:21,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:21,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:21,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:21,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:46:21,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:21,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:21,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-27 04:46:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:21,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:21,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:21,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:46:21,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:21,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:46:21,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:46:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:21,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:46:21,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178028853] [2020-10-27 04:46:21,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:46:21,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:46:21,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583139805] [2020-10-27 04:46:21,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:46:21,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:46:21,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:46:21,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:46:21,574 INFO L87 Difference]: Start difference. First operand 963 states and 1636 transitions. Second operand 11 states. [2020-10-27 04:46:22,747 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:46:23,951 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-27 04:46:25,197 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 04:46:28,684 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 412 DAG size of output: 408 [2020-10-27 04:46:48,078 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:46:48,745 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:46:49,237 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:50,022 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:46:51,235 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:46:51,692 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:46:52,115 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:53,366 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:46:53,941 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:46:54,344 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:55,564 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:46:56,165 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:46:56,621 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:57,953 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:46:58,519 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:46:58,964 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:01,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:47:01,464 INFO L93 Difference]: Finished difference Result 3836 states and 6539 transitions. [2020-10-27 04:47:01,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:47:01,465 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 256 [2020-10-27 04:47:01,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:47:01,482 INFO L225 Difference]: With dead ends: 3836 [2020-10-27 04:47:01,482 INFO L226 Difference]: Without dead ends: 2924 [2020-10-27 04:47:01,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:47:01,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-10-27 04:47:02,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 2610. [2020-10-27 04:47:02,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2610 states. [2020-10-27 04:47:02,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 4433 transitions. [2020-10-27 04:47:02,069 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 4433 transitions. Word has length 256 [2020-10-27 04:47:02,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:47:02,069 INFO L481 AbstractCegarLoop]: Abstraction has 2610 states and 4433 transitions. [2020-10-27 04:47:02,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:47:02,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 4433 transitions. [2020-10-27 04:47:02,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-27 04:47:02,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:47:02,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:47:02,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:47:02,083 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:47:02,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:47:02,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1270929201, now seen corresponding path program 1 times [2020-10-27 04:47:02,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:47:02,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402510699] [2020-10-27 04:47:02,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:47:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:02,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:02,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:02,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:03,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:03,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:04,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:04,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:07,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:07,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-27 04:47:07,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:47:07,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:47:07,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:47:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:47:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-27 04:47:07,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:08,545 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:47:08,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:47:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:08,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:08,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:08,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:47:08,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:08,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:47:08,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:08,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:08,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:08,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:08,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:08,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:47:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:08,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:09,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:09,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:47:09,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:09,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-10-27 04:47:09,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:09,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:47:09,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:09,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 04:47:09,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:09,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:47:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:09,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:09,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:09,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:47:09,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:09,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:47:09,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:09,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:47:09,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:47:09,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:09,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:47:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:09,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:09,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:09,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:47:09,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:09,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:47:09,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:09,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:47:09,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:47:09,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:47:09,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:09,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-27 04:47:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:09,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:09,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:09,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:09,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:09,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:47:09,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:09,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:09,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:09,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:09,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:09,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 04:47:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:09,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:09,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:09,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:09,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:09,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:47:09,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:09,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:09,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-27 04:47:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:09,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:09,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:09,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:09,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:09,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:47:09,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:09,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:09,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:09,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:09,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:09,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 04:47:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:09,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:09,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:09,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:09,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:09,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:47:09,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:09,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:09,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:09,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:09,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:09,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-27 04:47:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:09,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:09,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:09,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:47:09,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:09,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:47:09,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:09,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:09,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:47:09,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:09,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:47:10,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402510699] [2020-10-27 04:47:10,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:47:10,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:47:10,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500519258] [2020-10-27 04:47:10,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:47:10,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:47:10,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:47:10,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:47:10,060 INFO L87 Difference]: Start difference. First operand 2610 states and 4433 transitions. Second operand 11 states. [2020-10-27 04:47:11,292 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:47:12,487 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-27 04:47:15,465 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 413 DAG size of output: 411 [2020-10-27 04:47:16,656 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 04:47:37,667 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:47:38,415 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:38,918 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:39,602 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:40,982 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:41,631 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:41,977 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:43,309 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:44,072 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:44,395 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:45,624 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:46,464 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:46,844 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:48,116 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:48,928 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:49,305 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:51,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:47:51,887 INFO L93 Difference]: Finished difference Result 10160 states and 17267 transitions. [2020-10-27 04:47:51,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:47:51,891 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2020-10-27 04:47:51,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:47:51,932 INFO L225 Difference]: With dead ends: 10160 [2020-10-27 04:47:51,933 INFO L226 Difference]: Without dead ends: 7723 [2020-10-27 04:47:51,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:47:51,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7723 states. [2020-10-27 04:47:53,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7723 to 7019. [2020-10-27 04:47:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7019 states. [2020-10-27 04:47:53,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7019 states to 7019 states and 11878 transitions. [2020-10-27 04:47:53,315 INFO L78 Accepts]: Start accepts. Automaton has 7019 states and 11878 transitions. Word has length 257 [2020-10-27 04:47:53,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:47:53,315 INFO L481 AbstractCegarLoop]: Abstraction has 7019 states and 11878 transitions. [2020-10-27 04:47:53,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:47:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 7019 states and 11878 transitions. [2020-10-27 04:47:53,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-27 04:47:53,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:47:53,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:47:53,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:47:53,339 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:47:53,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:47:53,340 INFO L82 PathProgramCache]: Analyzing trace with hash 746892456, now seen corresponding path program 1 times [2020-10-27 04:47:53,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:47:53,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229729189] [2020-10-27 04:47:53,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:47:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:53,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:53,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:53,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:54,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:54,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:55,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:58,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:58,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-27 04:47:58,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:47:58,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 04:47:58,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:47:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:47:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-27 04:47:58,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:59,877 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:47:59,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:47:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:59,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:59,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:59,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:47:59,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:59,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:47:59,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:59,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:59,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:47:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:00,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:00,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:00,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:48:00,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:00,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-27 04:48:00,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:00,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:48:00,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:48:00,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:48:00,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:00,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:48:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:00,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:00,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:00,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:48:00,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:00,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:48:00,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:00,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:48:00,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:48:00,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:48:00,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:00,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:48:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:00,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:00,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:00,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:48:00,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:00,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:48:00,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:48:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:48:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:48:00,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:00,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-27 04:48:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:00,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:00,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:00,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:00,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:00,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:48:00,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:00,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:00,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 04:48:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:00,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:00,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:00,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:00,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:00,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:48:00,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:00,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:00,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:00,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:00,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:00,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-27 04:48:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:00,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:00,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:00,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:00,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:00,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:48:00,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:00,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:00,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:00,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:00,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:01,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 04:48:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:01,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:01,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:01,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:01,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:01,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:48:01,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:01,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:01,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:01,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:01,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:01,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-27 04:48:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:01,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:01,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:01,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:48:01,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:01,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:48:01,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:01,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:01,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:48:01,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:01,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:48:01,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229729189] [2020-10-27 04:48:01,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:48:01,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:48:01,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161521883] [2020-10-27 04:48:01,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:48:01,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:48:01,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:48:01,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:48:01,260 INFO L87 Difference]: Start difference. First operand 7019 states and 11878 transitions. Second operand 11 states. [2020-10-27 04:48:02,509 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:48:03,771 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-27 04:48:05,189 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 04:48:09,243 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 412 DAG size of output: 408 [2020-10-27 04:48:32,621 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:48:33,339 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:33,860 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:34,706 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:36,031 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:36,512 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:37,107 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:38,507 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:39,122 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:39,552 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:40,895 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:41,556 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:42,099 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:43,525 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:44,156 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:44,619 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:47,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:48:47,773 INFO L93 Difference]: Finished difference Result 28194 states and 47798 transitions. [2020-10-27 04:48:47,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:48:47,776 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2020-10-27 04:48:47,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:48:47,860 INFO L225 Difference]: With dead ends: 28194 [2020-10-27 04:48:47,860 INFO L226 Difference]: Without dead ends: 21424 [2020-10-27 04:48:47,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:48:47,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21424 states.