/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-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:57:42,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:57:42,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:57:42,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:57:42,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:57:42,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:57:42,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:57:42,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:57:42,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:57:42,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:57:42,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:57:42,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:57:42,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:57:42,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:57:42,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:57:42,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:57:42,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:57:42,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:57:42,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:57:42,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:57:42,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:57:42,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:57:42,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:57:42,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:57:42,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:57:42,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:57:42,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:57:42,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:57:42,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:57:42,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:57:42,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:57:42,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:57:42,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:57:42,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:57:42,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:57:42,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:57:42,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:57:42,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:57:42,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:57:42,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:57:42,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:57:42,891 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 04:57:42,944 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:57:42,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:57:42,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:57:42,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:57:42,948 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:57:42,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:57:42,949 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:57:42,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:57:42,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:57:42,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:57:42,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:57:42,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:57:42,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:57:42,951 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:57:42,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:57:42,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:57:42,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:57:42,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:57:42,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:57:42,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:57:42,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:57:42,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:57:42,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:57:42,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:57:42,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:57:42,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:57:42,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:57:42,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:57:42,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:57:42,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:57:43,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:57:43,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:57:43,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:57:43,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:57:43,399 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:57:43,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 04:57:43,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c77e03ecd/6125eaeb9dd5444bbb4ca9421cb041ca/FLAG599910e17 [2020-10-27 04:57:44,350 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:57:44,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 04:57:44,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c77e03ecd/6125eaeb9dd5444bbb4ca9421cb041ca/FLAG599910e17 [2020-10-27 04:57:44,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c77e03ecd/6125eaeb9dd5444bbb4ca9421cb041ca [2020-10-27 04:57:44,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:57:44,486 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:57:44,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:57:44,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:57:44,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:57:44,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:57:44" (1/1) ... [2020-10-27 04:57:44,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ff1a65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:44, skipping insertion in model container [2020-10-27 04:57:44,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:57:44" (1/1) ... [2020-10-27 04:57:44,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:57:44,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:57:45,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:57:45,864 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:57:46,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:57:46,599 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:57:46,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:46 WrapperNode [2020-10-27 04:57:46,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:57:46,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:57:46,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:57:46,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:57:46,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:46" (1/1) ... [2020-10-27 04:57:46,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:46" (1/1) ... [2020-10-27 04:57:46,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:46" (1/1) ... [2020-10-27 04:57:46,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:46" (1/1) ... [2020-10-27 04:57:46,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:46" (1/1) ... [2020-10-27 04:57:46,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:46" (1/1) ... [2020-10-27 04:57:46,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:46" (1/1) ... [2020-10-27 04:57:46,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:57:46,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:57:46,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:57:46,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:57:46,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:46" (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 04:57:46,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:57:46,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:57:46,943 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:57:46,944 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:57:46,944 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:57:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:57:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:57:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:57:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:57:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:57:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:57:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:57:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:57:46,948 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:57:46,948 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:57:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:57:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:57:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:57:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 04:57:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:57:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:57:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:57:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:57:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:57:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:57:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:57:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:57:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:57:50,245 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:57:50,246 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:57:50,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:57:50 BoogieIcfgContainer [2020-10-27 04:57:50,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:57:50,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:57:50,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:57:50,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:57:50,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:57:44" (1/3) ... [2020-10-27 04:57:50,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55230821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:57:50, skipping insertion in model container [2020-10-27 04:57:50,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:57:46" (2/3) ... [2020-10-27 04:57:50,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55230821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:57:50, skipping insertion in model container [2020-10-27 04:57:50,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:57:50" (3/3) ... [2020-10-27 04:57:50,263 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 04:57:50,275 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:57:50,281 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:57:50,294 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:57:50,332 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:57:50,332 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:57:50,332 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:57:50,332 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:57:50,332 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:57:50,333 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:57:50,333 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:57:50,333 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:57:50,369 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states. [2020-10-27 04:57:50,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-27 04:57:50,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:50,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:57:50,409 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:50,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:50,422 INFO L82 PathProgramCache]: Analyzing trace with hash 191998976, now seen corresponding path program 1 times [2020-10-27 04:57:50,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:50,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280647758] [2020-10-27 04:57:50,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:51,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:51,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:52,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:53,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:53,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:53,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:54,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:54,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:54,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:54,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:55,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:55,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:56,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:56,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:56,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-27 04:57:56,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 04:57:56,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-27 04:57:56,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:57:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 04:57:56,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:57:57,541 WARN L193 SmtUtils]: Spent 878.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 04:57:57,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:57,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:57,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:57,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:57,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:57,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 04:57:57,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:57,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:57,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:57,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:57,811 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 04:57:57,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280647758] [2020-10-27 04:57:57,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:57,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:57,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732284368] [2020-10-27 04:57:57,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:57,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:57,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:57,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:57,842 INFO L87 Difference]: Start difference. First operand 902 states. Second operand 5 states. [2020-10-27 04:58:08,142 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 04:58:10,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:10,679 INFO L93 Difference]: Finished difference Result 2587 states and 4706 transitions. [2020-10-27 04:58:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:58:10,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 291 [2020-10-27 04:58:10,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:10,716 INFO L225 Difference]: With dead ends: 2587 [2020-10-27 04:58:10,717 INFO L226 Difference]: Without dead ends: 1730 [2020-10-27 04:58:10,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:58:10,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2020-10-27 04:58:10,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1649. [2020-10-27 04:58:10,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1649 states. [2020-10-27 04:58:10,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2548 transitions. [2020-10-27 04:58:10,918 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2548 transitions. Word has length 291 [2020-10-27 04:58:10,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:10,919 INFO L481 AbstractCegarLoop]: Abstraction has 1649 states and 2548 transitions. [2020-10-27 04:58:10,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:58:10,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2548 transitions. [2020-10-27 04:58:10,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-27 04:58:10,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:10,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:58:10,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:58:10,931 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:10,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:10,931 INFO L82 PathProgramCache]: Analyzing trace with hash -2012337856, now seen corresponding path program 1 times [2020-10-27 04:58:10,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:10,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318750273] [2020-10-27 04:58:10,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:11,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:11,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:11,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:11,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:12,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:12,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:12,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:12,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:12,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:12,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:12,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:13,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:13,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:13,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:14,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:14,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:16,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:16,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-27 04:58:16,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 04:58:16,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 04:58:16,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:16,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:58:16,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:58:16,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 04:58:16,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:17,297 WARN L193 SmtUtils]: Spent 995.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 04:58:17,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:17,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:17,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:17,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:17,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:17,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:58:17,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:17,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:17,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:17,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:17,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:58:17,547 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 04:58:17,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318750273] [2020-10-27 04:58:17,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:17,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:58:17,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224709665] [2020-10-27 04:58:17,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:58:17,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:17,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:58:17,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:58:17,555 INFO L87 Difference]: Start difference. First operand 1649 states and 2548 transitions. Second operand 5 states. [2020-10-27 04:58:26,107 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 04:58:28,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:28,296 INFO L93 Difference]: Finished difference Result 4810 states and 7409 transitions. [2020-10-27 04:58:28,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:58:28,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 293 [2020-10-27 04:58:28,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:28,316 INFO L225 Difference]: With dead ends: 4810 [2020-10-27 04:58:28,316 INFO L226 Difference]: Without dead ends: 3220 [2020-10-27 04:58:28,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:58:28,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2020-10-27 04:58:28,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3146. [2020-10-27 04:58:28,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3146 states. [2020-10-27 04:58:28,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4831 transitions. [2020-10-27 04:58:28,470 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4831 transitions. Word has length 293 [2020-10-27 04:58:28,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:28,471 INFO L481 AbstractCegarLoop]: Abstraction has 3146 states and 4831 transitions. [2020-10-27 04:58:28,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:58:28,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4831 transitions. [2020-10-27 04:58:28,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-27 04:58:28,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:28,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:58:28,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:58:28,482 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:28,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:28,483 INFO L82 PathProgramCache]: Analyzing trace with hash 175885219, now seen corresponding path program 1 times [2020-10-27 04:58:28,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:28,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711715836] [2020-10-27 04:58:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:28,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:28,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:28,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:28,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:28,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:29,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:29,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:29,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:29,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:29,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:29,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:30,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:30,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:30,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:30,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:30,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:33,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:33,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-27 04:58:33,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 04:58:33,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 04:58:33,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:33,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:58:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:58:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 04:58:33,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 04:58:34,616 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 04:58:34,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:34,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:34,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:34,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:34,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:34,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:58:34,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:34,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:34,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:34,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:58:34,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711715836] [2020-10-27 04:58:34,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:34,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:58:34,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192365420] [2020-10-27 04:58:34,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:58:34,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:34,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:58:34,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:58:34,821 INFO L87 Difference]: Start difference. First operand 3146 states and 4831 transitions. Second operand 5 states. [2020-10-27 04:58:43,160 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 04:58:45,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:45,314 INFO L93 Difference]: Finished difference Result 9128 states and 13955 transitions. [2020-10-27 04:58:45,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:58:45,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 295 [2020-10-27 04:58:45,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:45,353 INFO L225 Difference]: With dead ends: 9128 [2020-10-27 04:58:45,353 INFO L226 Difference]: Without dead ends: 6125 [2020-10-27 04:58:45,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:58:45,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6125 states. [2020-10-27 04:58:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6125 to 6038. [2020-10-27 04:58:45,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6038 states. [2020-10-27 04:58:45,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6038 states to 6038 states and 9203 transitions. [2020-10-27 04:58:45,634 INFO L78 Accepts]: Start accepts. Automaton has 6038 states and 9203 transitions. Word has length 295 [2020-10-27 04:58:45,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:45,636 INFO L481 AbstractCegarLoop]: Abstraction has 6038 states and 9203 transitions. [2020-10-27 04:58:45,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:58:45,636 INFO L276 IsEmpty]: Start isEmpty. Operand 6038 states and 9203 transitions. [2020-10-27 04:58:45,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-27 04:58:45,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:45,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:58:45,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:58:45,653 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:45,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:45,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1384622959, now seen corresponding path program 1 times [2020-10-27 04:58:45,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:45,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048470014] [2020-10-27 04:58:45,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:45,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:45,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:46,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:46,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:46,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:49,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:49,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:49,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:50,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:50,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:50,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:50,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:50,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:50,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:50,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:50,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:50,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-27 04:58:50,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 04:58:50,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-27 04:58:50,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:50,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:58:50,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:58:50,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 04:58:50,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:51,898 WARN L193 SmtUtils]: Spent 880.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 04:58:51,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:51,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:51,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:51,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:51,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:51,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:58:51,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:51,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:51,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:51,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:51,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:52,103 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 04:58:52,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048470014] [2020-10-27 04:58:52,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:52,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:58:52,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540917400] [2020-10-27 04:58:52,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:58:52,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:52,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:58:52,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:58:52,106 INFO L87 Difference]: Start difference. First operand 6038 states and 9203 transitions. Second operand 5 states. [2020-10-27 04:59:01,115 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 04:59:03,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:03,576 INFO L93 Difference]: Finished difference Result 17817 states and 27110 transitions. [2020-10-27 04:59:03,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:59:03,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 297 [2020-10-27 04:59:03,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:03,632 INFO L225 Difference]: With dead ends: 17817 [2020-10-27 04:59:03,633 INFO L226 Difference]: Without dead ends: 11882 [2020-10-27 04:59:03,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:59:03,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11882 states. [2020-10-27 04:59:04,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11882 to 11801. [2020-10-27 04:59:04,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11801 states. [2020-10-27 04:59:04,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11801 states to 11801 states and 17866 transitions. [2020-10-27 04:59:04,299 INFO L78 Accepts]: Start accepts. Automaton has 11801 states and 17866 transitions. Word has length 297 [2020-10-27 04:59:04,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:04,300 INFO L481 AbstractCegarLoop]: Abstraction has 11801 states and 17866 transitions. [2020-10-27 04:59:04,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:59:04,300 INFO L276 IsEmpty]: Start isEmpty. Operand 11801 states and 17866 transitions. [2020-10-27 04:59:04,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-27 04:59:04,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:04,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:59:04,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:59:04,329 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:04,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:04,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1333743446, now seen corresponding path program 1 times [2020-10-27 04:59:04,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:04,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087332508] [2020-10-27 04:59:04,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:04,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:04,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:04,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:05,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:05,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:05,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:05,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:07,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:07,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:07,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:07,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:07,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:08,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:08,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:08,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:08,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:09,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:09,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-27 04:59:09,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 04:59:09,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 04:59:09,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:59:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:59:09,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-27 04:59:09,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:10,577 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 04:59:10,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:10,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:10,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:10,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:10,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:10,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:59:10,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:10,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:10,762 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 04:59:10,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087332508] [2020-10-27 04:59:10,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:10,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:59:10,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325258469] [2020-10-27 04:59:10,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:59:10,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:10,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:59:10,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:59:10,765 INFO L87 Difference]: Start difference. First operand 11801 states and 17866 transitions. Second operand 5 states. [2020-10-27 04:59:20,486 WARN L193 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 04:59:23,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:23,155 INFO L93 Difference]: Finished difference Result 34546 states and 52137 transitions. [2020-10-27 04:59:23,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:59:23,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2020-10-27 04:59:23,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:23,225 INFO L225 Difference]: With dead ends: 34546 [2020-10-27 04:59:23,225 INFO L226 Difference]: Without dead ends: 23226 [2020-10-27 04:59:23,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:59:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23226 states. [2020-10-27 04:59:24,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23226 to 23135. [2020-10-27 04:59:24,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23135 states. [2020-10-27 04:59:24,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23135 states to 23135 states and 34794 transitions. [2020-10-27 04:59:24,542 INFO L78 Accepts]: Start accepts. Automaton has 23135 states and 34794 transitions. Word has length 299 [2020-10-27 04:59:24,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:24,542 INFO L481 AbstractCegarLoop]: Abstraction has 23135 states and 34794 transitions. [2020-10-27 04:59:24,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:59:24,542 INFO L276 IsEmpty]: Start isEmpty. Operand 23135 states and 34794 transitions. [2020-10-27 04:59:24,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-27 04:59:24,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:24,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:59:24,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:59:24,590 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:24,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:24,591 INFO L82 PathProgramCache]: Analyzing trace with hash -979947282, now seen corresponding path program 1 times [2020-10-27 04:59:24,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:24,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906421190] [2020-10-27 04:59:24,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:24,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:24,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:24,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:25,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:25,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:25,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:25,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:25,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:25,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:25,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:25,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:25,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:25,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:25,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:25,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:29,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:29,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-27 04:59:29,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 04:59:29,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 04:59:29,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:29,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:59:29,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:59:29,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 04:59:29,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:59:30,842 WARN L193 SmtUtils]: Spent 920.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 04:59:30,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:30,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:30,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:30,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:30,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:30,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:59:30,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:30,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:30,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:30,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:30,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:30,988 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 04:59:30,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906421190] [2020-10-27 04:59:30,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:30,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:59:30,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443151444] [2020-10-27 04:59:30,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:59:30,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:30,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:59:30,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:59:30,991 INFO L87 Difference]: Start difference. First operand 23135 states and 34794 transitions. Second operand 5 states. [2020-10-27 04:59:41,814 WARN L193 SmtUtils]: Spent 893.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 04:59:44,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:44,873 INFO L93 Difference]: Finished difference Result 67665 states and 101412 transitions. [2020-10-27 04:59:44,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:59:44,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 301 [2020-10-27 04:59:44,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:44,953 INFO L225 Difference]: With dead ends: 67665 [2020-10-27 04:59:44,953 INFO L226 Difference]: Without dead ends: 45266 [2020-10-27 04:59:44,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:59:45,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45266 states. [2020-10-27 04:59:47,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45266 to 45175. [2020-10-27 04:59:47,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45175 states. [2020-10-27 04:59:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45175 states to 45175 states and 67430 transitions. [2020-10-27 04:59:47,691 INFO L78 Accepts]: Start accepts. Automaton has 45175 states and 67430 transitions. Word has length 301 [2020-10-27 04:59:47,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:47,691 INFO L481 AbstractCegarLoop]: Abstraction has 45175 states and 67430 transitions. [2020-10-27 04:59:47,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:59:47,691 INFO L276 IsEmpty]: Start isEmpty. Operand 45175 states and 67430 transitions. [2020-10-27 04:59:47,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-27 04:59:47,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:47,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:59:47,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:59:47,761 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:47,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:47,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1223533383, now seen corresponding path program 1 times [2020-10-27 04:59:47,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:47,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445624544] [2020-10-27 04:59:47,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:47,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:47,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:47,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:47,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:48,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:48,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:48,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:48,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:48,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:48,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:48,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:48,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:48,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:51,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:52,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:52,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-27 04:59:52,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 04:59:52,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 04:59:52,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:52,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:59:52,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:59:52,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 04:59:52,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:53,832 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 04:59:53,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:53,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:53,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:53,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:53,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:53,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:59:53,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:53,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:53,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:53,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:53,971 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 04:59:53,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445624544] [2020-10-27 04:59:53,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:53,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:59:53,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703591455] [2020-10-27 04:59:53,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:59:53,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:53,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:59:53,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:59:53,974 INFO L87 Difference]: Start difference. First operand 45175 states and 67430 transitions. Second operand 5 states. [2020-10-27 05:00:07,264 WARN L193 SmtUtils]: Spent 989.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 05:00:11,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:00:11,286 INFO L93 Difference]: Finished difference Result 130371 states and 193677 transitions. [2020-10-27 05:00:11,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:00:11,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-10-27 05:00:11,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:00:11,462 INFO L225 Difference]: With dead ends: 130371 [2020-10-27 05:00:11,462 INFO L226 Difference]: Without dead ends: 88032 [2020-10-27 05:00:11,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:00:11,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88032 states. [2020-10-27 05:00:17,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88032 to 87941. [2020-10-27 05:00:17,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87941 states. [2020-10-27 05:00:17,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87941 states to 87941 states and 130131 transitions. [2020-10-27 05:00:17,695 INFO L78 Accepts]: Start accepts. Automaton has 87941 states and 130131 transitions. Word has length 303 [2020-10-27 05:00:17,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:00:17,696 INFO L481 AbstractCegarLoop]: Abstraction has 87941 states and 130131 transitions. [2020-10-27 05:00:17,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:00:17,696 INFO L276 IsEmpty]: Start isEmpty. Operand 87941 states and 130131 transitions. [2020-10-27 05:00:17,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-27 05:00:17,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:17,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:00:17,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:00:17,785 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:17,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:17,786 INFO L82 PathProgramCache]: Analyzing trace with hash 494134059, now seen corresponding path program 1 times [2020-10-27 05:00:17,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:17,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900947126] [2020-10-27 05:00:17,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:17,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:17,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:17,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:18,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:18,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:18,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:18,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:18,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:18,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:18,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:18,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:18,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:18,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:22,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:22,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-27 05:00:22,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:00:22,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 05:00:22,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:00:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:00:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 05:00:22,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:23,884 WARN L193 SmtUtils]: Spent 877.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:00:23,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:23,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:23,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:23,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:23,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:23,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:00:23,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:23,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:00:23,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:23,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:00:23,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:24,018 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 05:00:24,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900947126] [2020-10-27 05:00:24,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:24,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:00:24,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652175634] [2020-10-27 05:00:24,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:00:24,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:24,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:00:24,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:00:24,021 INFO L87 Difference]: Start difference. First operand 87941 states and 130131 transitions. Second operand 5 states. [2020-10-27 05:00:42,835 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 05:00:48,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:00:48,590 INFO L93 Difference]: Finished difference Result 255297 states and 376330 transitions. [2020-10-27 05:00:48,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:00:48,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2020-10-27 05:00:48,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:00:49,041 INFO L225 Difference]: With dead ends: 255297 [2020-10-27 05:00:49,041 INFO L226 Difference]: Without dead ends: 172726 [2020-10-27 05:00:49,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:00:49,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172726 states. [2020-10-27 05:01:02,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172726 to 172649. [2020-10-27 05:01:02,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172649 states. [2020-10-27 05:01:03,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172649 states to 172649 states and 253368 transitions. [2020-10-27 05:01:03,119 INFO L78 Accepts]: Start accepts. Automaton has 172649 states and 253368 transitions. Word has length 305 [2020-10-27 05:01:03,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:03,119 INFO L481 AbstractCegarLoop]: Abstraction has 172649 states and 253368 transitions. [2020-10-27 05:01:03,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 172649 states and 253368 transitions. [2020-10-27 05:01:03,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-27 05:01:03,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:03,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:01:03,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:01:03,257 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:03,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:03,258 INFO L82 PathProgramCache]: Analyzing trace with hash -514213041, now seen corresponding path program 1 times [2020-10-27 05:01:03,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:03,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727236654] [2020-10-27 05:01:03,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:03,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:03,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:03,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:03,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:03,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:03,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:03,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:03,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:04,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:04,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:04,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:04,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:04,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:08,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:08,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-27 05:01:08,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:01:08,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 05:01:08,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:08,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:08,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:08,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 05:01:08,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:09,308 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 05:01:09,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:09,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:09,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:09,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:09,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:09,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:01:09,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:09,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:09,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:09,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:09,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:09,462 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 05:01:09,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727236654] [2020-10-27 05:01:09,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:09,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:09,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504540236] [2020-10-27 05:01:09,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:09,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:09,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:09,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:09,465 INFO L87 Difference]: Start difference. First operand 172649 states and 253368 transitions. Second operand 5 states.