/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:38:03,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:38:03,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:38:03,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:38:03,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:38:03,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:38:03,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:38:03,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:38:03,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:38:03,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:38:03,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:38:03,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:38:03,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:38:03,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:38:03,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:38:03,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:38:03,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:38:03,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:38:03,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:38:03,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:38:03,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:38:03,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:38:03,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:38:03,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:38:03,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:38:03,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:38:03,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:38:03,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:38:03,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:38:03,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:38:03,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:38:03,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:38:03,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:38:03,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:38:03,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:38:03,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:38:03,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:38:03,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:38:03,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:38:03,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:38:03,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:38:03,929 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 04:38:03,958 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:38:03,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:38:03,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:38:03,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:38:03,961 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:38:03,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:38:03,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:38:03,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:38:03,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:38:03,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:38:03,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:38:03,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:38:03,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:38:03,963 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:38:03,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:38:03,963 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:38:03,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:38:03,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:38:03,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:38:03,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:38:03,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:38:03,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:38:03,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:38:03,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:38:03,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:38:03,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:38:03,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:38:03,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:38:03,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:38:03,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:38:04,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:38:04,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:38:04,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:38:04,442 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:38:04,443 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:38:04,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-27 04:38:04,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b7cb33e8/d221f279e93349a48f2c70d9cf51e760/FLAGaa17d47dc [2020-10-27 04:38:05,309 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:38:05,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-27 04:38:05,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b7cb33e8/d221f279e93349a48f2c70d9cf51e760/FLAGaa17d47dc [2020-10-27 04:38:05,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b7cb33e8/d221f279e93349a48f2c70d9cf51e760 [2020-10-27 04:38:05,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:38:05,603 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:38:05,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:38:05,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:38:05,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:38:05,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:38:05" (1/1) ... [2020-10-27 04:38:05,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb6ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:05, skipping insertion in model container [2020-10-27 04:38:05,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:38:05" (1/1) ... [2020-10-27 04:38:05,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:38:05,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:38:05,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:38:05,965 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:38:06,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:38:06,138 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:38:06,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:06 WrapperNode [2020-10-27 04:38:06,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:38:06,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:38:06,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:38:06,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:38:06,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:06" (1/1) ... [2020-10-27 04:38:06,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:06" (1/1) ... [2020-10-27 04:38:06,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:06" (1/1) ... [2020-10-27 04:38:06,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:06" (1/1) ... [2020-10-27 04:38:06,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:06" (1/1) ... [2020-10-27 04:38:06,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:06" (1/1) ... [2020-10-27 04:38:06,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:06" (1/1) ... [2020-10-27 04:38:06,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:38:06,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:38:06,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:38:06,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:38:06,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:06" (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 04:38:06,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:38:06,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:38:06,334 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:38:06,334 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:38:06,334 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:38:06,335 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:38:06,335 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:38:06,335 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:38:06,335 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:38:06,336 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:38:06,337 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:38:06,338 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:38:06,338 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:38:06,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:38:06,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:38:06,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:38:06,340 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:38:06,340 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:38:06,340 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:38:06,340 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:38:06,340 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:38:06,341 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:38:06,341 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:38:06,341 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:38:06,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:38:06,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:38:06,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:38:06,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:38:07,355 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:38:07,356 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:38:07,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:38:07 BoogieIcfgContainer [2020-10-27 04:38:07,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:38:07,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:38:07,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:38:07,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:38:07,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:38:05" (1/3) ... [2020-10-27 04:38:07,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfb5c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:38:07, skipping insertion in model container [2020-10-27 04:38:07,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:06" (2/3) ... [2020-10-27 04:38:07,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfb5c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:38:07, skipping insertion in model container [2020-10-27 04:38:07,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:38:07" (3/3) ... [2020-10-27 04:38:07,369 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-27 04:38:07,383 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:38:07,389 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:38:07,413 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:38:07,464 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:38:07,464 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:38:07,464 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:38:07,465 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:38:07,465 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:38:07,465 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:38:07,465 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:38:07,465 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:38:07,498 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-10-27 04:38:07,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 04:38:07,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:38:07,514 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] [2020-10-27 04:38:07,514 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:38:07,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:38:07,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1941608317, now seen corresponding path program 1 times [2020-10-27 04:38:07,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:38:07,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9558509] [2020-10-27 04:38:07,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:38:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:07,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:08,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:08,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 04:38:08,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:08,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-27 04:38:08,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:08,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:08,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 04:38:08,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:08,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:38:08,802 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:38:08,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:38:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:08,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:08,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:08,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:38:08,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:08,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 04:38:08,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:08,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:08,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:08,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:38:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:08,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:08,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:08,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:38:08,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:08,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:38:08,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:08,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:08,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:08,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 04:38:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:08,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:08,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:08,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:08,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:08,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:38:08,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:08,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:08,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:08,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:08,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:09,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:38:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:09,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:09,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:09,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:09,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:09,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:38:09,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:09,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:09,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:09,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:09,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 04:38:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:09,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:09,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:09,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:09,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:09,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:38:09,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:09,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:09,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:09,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:09,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:09,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:38:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:09,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:09,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:09,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:38:09,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:09,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:38:09,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:38:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:09,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:09,159 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 04:38:09,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9558509] [2020-10-27 04:38:09,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:38:09,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 04:38:09,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764932655] [2020-10-27 04:38:09,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:38:09,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:38:09,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:38:09,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:38:09,187 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 6 states. [2020-10-27 04:38:10,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:38:10,667 INFO L93 Difference]: Finished difference Result 287 states and 453 transitions. [2020-10-27 04:38:10,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:38:10,669 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-27 04:38:10,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:38:10,682 INFO L225 Difference]: With dead ends: 287 [2020-10-27 04:38:10,683 INFO L226 Difference]: Without dead ends: 175 [2020-10-27 04:38:10,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:38:10,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-27 04:38:10,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 160. [2020-10-27 04:38:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-27 04:38:10,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 256 transitions. [2020-10-27 04:38:10,752 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 256 transitions. Word has length 62 [2020-10-27 04:38:10,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:38:10,753 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 256 transitions. [2020-10-27 04:38:10,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:38:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 256 transitions. [2020-10-27 04:38:10,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 04:38:10,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:38:10,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:38:10,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:38:10,757 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:38:10,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:38:10,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1693827457, now seen corresponding path program 1 times [2020-10-27 04:38:10,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:38:10,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288018320] [2020-10-27 04:38:10,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:38:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:10,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:11,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:11,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 04:38:11,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:11,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 684 [2020-10-27 04:38:11,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:11,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:38:11,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 04:38:11,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:38:11,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:11,910 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:38:11,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:38:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:11,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:11,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:11,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:38:11,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:11,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:38:11,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:11,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:11,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:38:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:12,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:12,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:38:12,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:12,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 04:38:12,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:12,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:38:12,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:12,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:38:12,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:12,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 04:38:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:12,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:12,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:12,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:12,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:12,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:38:12,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:12,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:12,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:12,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:12,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:38:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:12,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:12,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:12,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:12,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:12,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:38:12,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:12,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:12,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:12,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:12,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:12,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 04:38:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:12,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:12,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:12,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:12,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:12,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:38:12,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:12,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:12,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:12,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:12,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:12,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:38:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:12,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:12,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:12,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:38:12,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:12,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:38:12,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:12,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:12,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:38:12,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:12,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:38:12,354 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 04:38:12,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288018320] [2020-10-27 04:38:12,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:38:12,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:38:12,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936272729] [2020-10-27 04:38:12,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:38:12,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:38:12,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:38:12,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:38:12,366 INFO L87 Difference]: Start difference. First operand 160 states and 256 transitions. Second operand 10 states. [2020-10-27 04:38:13,018 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:38:13,398 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 04:38:15,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:38:15,208 INFO L93 Difference]: Finished difference Result 288 states and 452 transitions. [2020-10-27 04:38:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 04:38:15,209 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-10-27 04:38:15,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:38:15,213 INFO L225 Difference]: With dead ends: 288 [2020-10-27 04:38:15,213 INFO L226 Difference]: Without dead ends: 184 [2020-10-27 04:38:15,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:38:15,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-27 04:38:15,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 160. [2020-10-27 04:38:15,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-27 04:38:15,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 232 transitions. [2020-10-27 04:38:15,247 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 232 transitions. Word has length 62 [2020-10-27 04:38:15,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:38:15,248 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 232 transitions. [2020-10-27 04:38:15,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:38:15,248 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 232 transitions. [2020-10-27 04:38:15,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 04:38:15,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:38:15,258 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] [2020-10-27 04:38:15,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:38:15,259 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:38:15,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:38:15,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1671843565, now seen corresponding path program 1 times [2020-10-27 04:38:15,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:38:15,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917441905] [2020-10-27 04:38:15,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:38:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:15,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:15,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:15,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:16,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:20,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:20,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:38:20,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:38:20,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 04:38:20,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:38:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 04:38:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:38:20,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:38:20,718 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:38:20,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:38:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:20,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:20,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:20,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:38:20,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:20,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:38:20,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:20,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:20,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:20,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:20,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:20,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:38:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:20,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:20,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:20,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 04:38:20,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:20,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 04:38:20,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:20,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:38:20,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:20,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:38:20,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:20,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:38:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:20,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:20,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:20,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:20,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:20,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:38:20,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:20,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:38:20,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:38:20,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:38:20,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 04:38:20,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:38:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:20,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:20,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:20,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:20,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:20,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:38:20,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:20,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:20,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:21,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:38:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:21,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:21,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:21,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:21,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:21,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:38:21,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:21,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:21,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:38:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:21,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:21,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:21,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:38:21,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:21,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:38:21,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:38:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:21,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:21,071 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 04:38:21,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917441905] [2020-10-27 04:38:21,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:38:21,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:38:21,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675387179] [2020-10-27 04:38:21,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:38:21,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:38:21,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:38:21,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:38:21,077 INFO L87 Difference]: Start difference. First operand 160 states and 232 transitions. Second operand 9 states. [2020-10-27 04:38:21,401 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:38:23,708 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:38:24,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:38:24,274 INFO L93 Difference]: Finished difference Result 388 states and 585 transitions. [2020-10-27 04:38:24,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:38:24,275 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-27 04:38:24,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:38:24,279 INFO L225 Difference]: With dead ends: 388 [2020-10-27 04:38:24,279 INFO L226 Difference]: Without dead ends: 290 [2020-10-27 04:38:24,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:38:24,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-27 04:38:24,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 247. [2020-10-27 04:38:24,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-27 04:38:24,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 362 transitions. [2020-10-27 04:38:24,351 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 362 transitions. Word has length 85 [2020-10-27 04:38:24,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:38:24,353 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 362 transitions. [2020-10-27 04:38:24,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:38:24,354 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 362 transitions. [2020-10-27 04:38:24,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 04:38:24,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:38:24,361 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] [2020-10-27 04:38:24,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:38:24,362 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:38:24,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:38:24,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1643732264, now seen corresponding path program 1 times [2020-10-27 04:38:24,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:38:24,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450310367] [2020-10-27 04:38:24,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:38:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:24,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:24,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:24,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:24,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:26,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:29,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:29,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 04:38:29,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:38:29,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 04:38:29,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:29,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:38:29,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:38:29,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 04:38:29,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:29,847 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:38:29,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:38:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:29,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:29,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:29,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:38:29,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:29,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:38:29,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:29,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:29,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:29,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:29,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:38:29,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:38:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:29,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:29,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:29,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 04:38:29,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:29,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 04:38:29,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:29,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:38:29,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:29,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:38:29,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:30,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:38:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:30,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:30,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:30,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:38:30,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:30,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:38:30,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:30,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:38:30,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:38:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:38:30,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:38:30,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:38:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:30,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:30,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:30,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:30,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:30,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:38:30,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:30,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:30,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:30,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 04:38:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:30,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:30,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:30,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:30,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:30,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:38:30,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:30,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:30,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:30,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:38:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:30,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:30,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:38:30,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:30,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:38:30,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:30,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:38:30,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:30,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:30,203 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 04:38:30,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450310367] [2020-10-27 04:38:30,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:38:30,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:38:30,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765003689] [2020-10-27 04:38:30,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:38:30,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:38:30,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:38:30,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:38:30,205 INFO L87 Difference]: Start difference. First operand 247 states and 362 transitions. Second operand 9 states. [2020-10-27 04:38:30,548 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:38:30,865 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:38:31,188 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:38:31,524 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:38:32,481 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:38:35,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:38:35,030 INFO L93 Difference]: Finished difference Result 759 states and 1127 transitions. [2020-10-27 04:38:35,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:38:35,031 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-27 04:38:35,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:38:35,035 INFO L225 Difference]: With dead ends: 759 [2020-10-27 04:38:35,035 INFO L226 Difference]: Without dead ends: 526 [2020-10-27 04:38:35,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:38:35,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-10-27 04:38:35,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 471. [2020-10-27 04:38:35,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-27 04:38:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 680 transitions. [2020-10-27 04:38:35,117 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 680 transitions. Word has length 87 [2020-10-27 04:38:35,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:38:35,120 INFO L481 AbstractCegarLoop]: Abstraction has 471 states and 680 transitions. [2020-10-27 04:38:35,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:38:35,120 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 680 transitions. [2020-10-27 04:38:35,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 04:38:35,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:38:35,123 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] [2020-10-27 04:38:35,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:38:35,124 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:38:35,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:38:35,124 INFO L82 PathProgramCache]: Analyzing trace with hash -2122036554, now seen corresponding path program 1 times [2020-10-27 04:38:35,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:38:35,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6547329] [2020-10-27 04:38:35,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:38:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:35,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:35,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:35,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:35,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:37,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:40,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:40,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 04:38:40,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:38:40,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:38:40,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:40,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:38:40,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:38:40,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 04:38:40,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:40,489 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:38:40,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:38:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:40,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:40,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:40,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:38:40,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:40,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:38:40,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:40,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:40,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:40,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:40,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:40,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:38:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:40,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:40,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:40,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 04:38:40,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:40,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 04:38:40,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:38:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:38:40,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:40,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:38:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:40,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:40,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:40,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:38:40,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:40,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:38:40,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:40,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:38:40,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:38:40,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:38:40,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:40,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:38:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:40,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:40,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:40,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:40,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:40,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:38:40,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:40,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:40,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:40,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:40,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:38:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:40,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:40,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:40,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:40,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:40,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:38:40,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:40,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:40,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:40,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:40,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:40,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:38:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:40,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:40,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:40,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:38:40,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:40,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:38:40,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:40,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:40,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:38:40,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:40,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:40,827 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 04:38:40,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6547329] [2020-10-27 04:38:40,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:38:40,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:38:40,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400816461] [2020-10-27 04:38:40,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:38:40,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:38:40,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:38:40,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:38:40,830 INFO L87 Difference]: Start difference. First operand 471 states and 680 transitions. Second operand 9 states. [2020-10-27 04:38:41,154 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:38:41,454 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:38:41,787 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:38:42,100 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:38:43,034 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:38:45,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:38:45,621 INFO L93 Difference]: Finished difference Result 1452 states and 2122 transitions. [2020-10-27 04:38:45,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:38:45,623 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-27 04:38:45,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:38:45,629 INFO L225 Difference]: With dead ends: 1452 [2020-10-27 04:38:45,629 INFO L226 Difference]: Without dead ends: 1006 [2020-10-27 04:38:45,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:38:45,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-10-27 04:38:45,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 907. [2020-10-27 04:38:45,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 907 states. [2020-10-27 04:38:45,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1287 transitions. [2020-10-27 04:38:45,724 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1287 transitions. Word has length 88 [2020-10-27 04:38:45,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:38:45,725 INFO L481 AbstractCegarLoop]: Abstraction has 907 states and 1287 transitions. [2020-10-27 04:38:45,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:38:45,725 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1287 transitions. [2020-10-27 04:38:45,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 04:38:45,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:38:45,728 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] [2020-10-27 04:38:45,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:38:45,728 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:38:45,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:38:45,729 INFO L82 PathProgramCache]: Analyzing trace with hash 928891771, now seen corresponding path program 1 times [2020-10-27 04:38:45,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:38:45,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819745255] [2020-10-27 04:38:45,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:38:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:45,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:45,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:45,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:45,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:46,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:50,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:50,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 04:38:50,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:38:50,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:38:50,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:50,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:38:50,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:38:50,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 04:38:50,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:51,116 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:38:51,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:38:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:51,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:51,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:51,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:38:51,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:51,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:38:51,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:51,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:51,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:51,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:38:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:51,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:51,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:51,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 04:38:51,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:51,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 04:38:51,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:51,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:38:51,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:51,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:38:51,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:51,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:38:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:51,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:51,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:51,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:38:51,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:51,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:38:51,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:38:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:38:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:38:51,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:51,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:38:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:51,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:51,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:51,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:51,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:51,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:38:51,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:51,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:51,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:38:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:51,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:51,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:51,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:51,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:51,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:38:51,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:51,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:51,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:38:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:51,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:51,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:51,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:38:51,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:51,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:38:51,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:38:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:51,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:51,539 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 04:38:51,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819745255] [2020-10-27 04:38:51,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:38:51,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:38:51,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765419380] [2020-10-27 04:38:51,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:38:51,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:38:51,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:38:51,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:38:51,545 INFO L87 Difference]: Start difference. First operand 907 states and 1287 transitions. Second operand 9 states. [2020-10-27 04:38:51,874 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:38:52,232 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:38:52,706 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:38:53,337 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-27 04:38:54,346 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:38:57,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:38:57,340 INFO L93 Difference]: Finished difference Result 3252 states and 4619 transitions. [2020-10-27 04:38:57,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:38:57,342 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-27 04:38:57,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:38:57,363 INFO L225 Difference]: With dead ends: 3252 [2020-10-27 04:38:57,363 INFO L226 Difference]: Without dead ends: 2413 [2020-10-27 04:38:57,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:38:57,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2020-10-27 04:38:57,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2219. [2020-10-27 04:38:57,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2219 states. [2020-10-27 04:38:57,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 3087 transitions. [2020-10-27 04:38:57,591 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 3087 transitions. Word has length 88 [2020-10-27 04:38:57,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:38:57,592 INFO L481 AbstractCegarLoop]: Abstraction has 2219 states and 3087 transitions. [2020-10-27 04:38:57,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:38:57,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 3087 transitions. [2020-10-27 04:38:57,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 04:38:57,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:38:57,600 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] [2020-10-27 04:38:57,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:38:57,600 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:38:57,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:38:57,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1081913326, now seen corresponding path program 1 times [2020-10-27 04:38:57,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:38:57,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462620514] [2020-10-27 04:38:57,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:38:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:57,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:57,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:57,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:57,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:57,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:02,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:02,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 04:39:02,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:39:02,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 04:39:02,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:02,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:02,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:39:02,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 04:39:02,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:02,977 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:02,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:02,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:02,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:02,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:02,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:02,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:39:02,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:02,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:02,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:02,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:02,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:03,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:03,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:03,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:03,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:39:03,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:39:03,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 04:39:03,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:03,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:03,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:03,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:39:03,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:03,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:39:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:03,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:03,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:03,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:39:03,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:03,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:39:03,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:03,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:03,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:39:03,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:39:03,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:03,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:39:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:03,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:03,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:03,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:03,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:39:03,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:03,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:39:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:03,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:03,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:03,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:03,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:03,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:39:03,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:03,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:03,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:03,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:03,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:03,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:39:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:03,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:03,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:03,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:03,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:03,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:39:03,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:03,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:03,325 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 04:39:03,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462620514] [2020-10-27 04:39:03,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:03,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:39:03,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773530521] [2020-10-27 04:39:03,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:39:03,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:03,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:39:03,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:03,339 INFO L87 Difference]: Start difference. First operand 2219 states and 3087 transitions. Second operand 9 states. [2020-10-27 04:39:03,689 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:39:03,989 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:39:04,358 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:39:04,683 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:05,560 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:08,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:08,374 INFO L93 Difference]: Finished difference Result 6561 states and 9231 transitions. [2020-10-27 04:39:08,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:39:08,375 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-27 04:39:08,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:08,402 INFO L225 Difference]: With dead ends: 6561 [2020-10-27 04:39:08,402 INFO L226 Difference]: Without dead ends: 4414 [2020-10-27 04:39:08,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:39:08,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4414 states. [2020-10-27 04:39:08,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4414 to 4115. [2020-10-27 04:39:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4115 states. [2020-10-27 04:39:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4115 states to 4115 states and 5647 transitions. [2020-10-27 04:39:08,813 INFO L78 Accepts]: Start accepts. Automaton has 4115 states and 5647 transitions. Word has length 89 [2020-10-27 04:39:08,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:08,813 INFO L481 AbstractCegarLoop]: Abstraction has 4115 states and 5647 transitions. [2020-10-27 04:39:08,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:39:08,813 INFO L276 IsEmpty]: Start isEmpty. Operand 4115 states and 5647 transitions. [2020-10-27 04:39:08,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 04:39:08,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:08,826 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] [2020-10-27 04:39:08,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:39:08,826 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:08,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:08,827 INFO L82 PathProgramCache]: Analyzing trace with hash -403240707, now seen corresponding path program 1 times [2020-10-27 04:39:08,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:08,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624407883] [2020-10-27 04:39:08,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:08,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:08,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:08,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:09,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:09,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:13,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:13,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 04:39:13,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:39:13,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 04:39:13,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:13,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:13,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 04:39:13,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 04:39:13,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:14,285 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:14,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:14,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:14,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:14,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:14,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:14,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:39:14,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:14,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:14,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:14,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:14,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:14,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:14,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:14,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:14,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 04:39:14,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 04:39:14,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:39:14,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:14,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:39:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:14,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:14,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:14,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:39:14,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:14,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:39:14,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:14,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:14,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:14,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:39:14,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:14,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:39:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:14,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:14,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:14,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:14,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:14,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:39:14,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:14,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:14,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:39:14,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:39:14,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:14,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:39:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:14,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:14,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:14,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:14,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:14,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:39:14,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:14,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:14,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:14,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:14,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:14,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:39:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:14,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:14,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:14,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:14,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:14,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:39:14,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:14,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:14,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:14,594 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 04:39:14,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624407883] [2020-10-27 04:39:14,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:14,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:39:14,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962277579] [2020-10-27 04:39:14,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:39:14,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:14,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:39:14,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:14,598 INFO L87 Difference]: Start difference. First operand 4115 states and 5647 transitions. Second operand 9 states. [2020-10-27 04:39:14,946 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:39:17,956 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:39:18,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:18,240 INFO L93 Difference]: Finished difference Result 11157 states and 15715 transitions. [2020-10-27 04:39:18,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:39:18,242 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-27 04:39:18,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:18,293 INFO L225 Difference]: With dead ends: 11157 [2020-10-27 04:39:18,293 INFO L226 Difference]: Without dead ends: 7882 [2020-10-27 04:39:18,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:39:18,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7882 states. [2020-10-27 04:39:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7882 to 7167. [2020-10-27 04:39:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7167 states. [2020-10-27 04:39:19,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 9955 transitions. [2020-10-27 04:39:19,105 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 9955 transitions. Word has length 89 [2020-10-27 04:39:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:19,105 INFO L481 AbstractCegarLoop]: Abstraction has 7167 states and 9955 transitions. [2020-10-27 04:39:19,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:39:19,106 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 9955 transitions. [2020-10-27 04:39:19,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 04:39:19,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:19,121 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] [2020-10-27 04:39:19,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:39:19,121 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:19,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:19,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1061539827, now seen corresponding path program 1 times [2020-10-27 04:39:19,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:19,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465760879] [2020-10-27 04:39:19,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:19,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:19,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:19,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:19,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:19,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:19,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:24,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:24,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 04:39:24,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:39:24,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 04:39:24,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:24,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:24,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:39:24,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:39:24,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:24,567 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:24,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:24,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:24,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:24,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:24,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:24,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:39:24,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:24,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:24,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:24,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:24,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:24,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 04:39:24,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:24,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 04:39:24,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:39:24,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:24,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:39:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:24,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:24,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:24,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:39:24,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:24,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:39:24,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:24,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:24,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:39:24,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:24,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:39:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:24,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:24,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:24,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:39:24,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:24,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:39:24,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:24,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:24,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:39:24,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:24,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:39:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:24,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:24,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:24,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:24,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:24,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:39:24,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:24,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:24,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:24,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:24,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:24,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 04:39:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:24,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:24,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:24,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:24,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:24,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:39:24,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:24,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:24,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:24,999 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 04:39:25,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465760879] [2020-10-27 04:39:25,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:25,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:39:25,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111681753] [2020-10-27 04:39:25,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:39:25,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:25,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:39:25,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:25,001 INFO L87 Difference]: Start difference. First operand 7167 states and 9955 transitions. Second operand 9 states. [2020-10-27 04:39:25,361 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:39:25,720 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:39:26,148 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:39:26,809 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-27 04:39:27,966 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:32,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:32,411 INFO L93 Difference]: Finished difference Result 24218 states and 34336 transitions. [2020-10-27 04:39:32,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:39:32,412 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-27 04:39:32,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:32,515 INFO L225 Difference]: With dead ends: 24218 [2020-10-27 04:39:32,515 INFO L226 Difference]: Without dead ends: 17696 [2020-10-27 04:39:32,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:39:32,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17696 states. [2020-10-27 04:39:34,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17696 to 16471. [2020-10-27 04:39:34,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16471 states. [2020-10-27 04:39:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16471 states to 16471 states and 22715 transitions. [2020-10-27 04:39:34,147 INFO L78 Accepts]: Start accepts. Automaton has 16471 states and 22715 transitions. Word has length 92 [2020-10-27 04:39:34,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:34,147 INFO L481 AbstractCegarLoop]: Abstraction has 16471 states and 22715 transitions. [2020-10-27 04:39:34,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:39:34,147 INFO L276 IsEmpty]: Start isEmpty. Operand 16471 states and 22715 transitions. [2020-10-27 04:39:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 04:39:34,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:34,179 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] [2020-10-27 04:39:34,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:39:34,180 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:34,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:34,180 INFO L82 PathProgramCache]: Analyzing trace with hash 407893639, now seen corresponding path program 1 times [2020-10-27 04:39:34,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:34,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009588274] [2020-10-27 04:39:34,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:34,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:34,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:34,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:34,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:39,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:39,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 04:39:39,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:39:39,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:39:39,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:39:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 04:39:39,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:39,557 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:39,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:39,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:39,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:39,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:39,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:39,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:39:39,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:39,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:39,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:39,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:39,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:39,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 04:39:39,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:39,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:39:39,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:39,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:39:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:39,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:39:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:39,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:39,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:39,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:39:39,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:39,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:39:39,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:39,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:39,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:39,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:39:39,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:39,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:39:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:39,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:39,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:39,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:39:39,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:39,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:39:39,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:39:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:39:39,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:39,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:39:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:39,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:39,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:39,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:39,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:39,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:39:39,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:39,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:39,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:39,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:39,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:39,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 04:39:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:39,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:39,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:39,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:39,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:39,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:39:39,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:39,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:39,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:39,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:39,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:39,882 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 04:39:39,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009588274] [2020-10-27 04:39:39,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:39,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:39:39,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396452720] [2020-10-27 04:39:39,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:39:39,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:39,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:39:39,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:39,885 INFO L87 Difference]: Start difference. First operand 16471 states and 22715 transitions. Second operand 9 states. [2020-10-27 04:39:40,261 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:39:40,645 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 04:39:41,390 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-10-27 04:39:41,835 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 04:39:43,127 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:49,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:49,055 INFO L93 Difference]: Finished difference Result 51771 states and 72418 transitions. [2020-10-27 04:39:49,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:39:49,056 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-27 04:39:49,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:49,239 INFO L225 Difference]: With dead ends: 51771 [2020-10-27 04:39:49,240 INFO L226 Difference]: Without dead ends: 37507 [2020-10-27 04:39:49,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:39:49,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37507 states. [2020-10-27 04:39:52,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37507 to 35201. [2020-10-27 04:39:52,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35201 states. [2020-10-27 04:39:52,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35201 states to 35201 states and 48024 transitions. [2020-10-27 04:39:52,430 INFO L78 Accepts]: Start accepts. Automaton has 35201 states and 48024 transitions. Word has length 92 [2020-10-27 04:39:52,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:52,431 INFO L481 AbstractCegarLoop]: Abstraction has 35201 states and 48024 transitions. [2020-10-27 04:39:52,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:39:52,431 INFO L276 IsEmpty]: Start isEmpty. Operand 35201 states and 48024 transitions. [2020-10-27 04:39:52,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 04:39:52,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:52,657 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] [2020-10-27 04:39:52,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:39:52,658 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:52,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:52,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1300387667, now seen corresponding path program 1 times [2020-10-27 04:39:52,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:52,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656256042] [2020-10-27 04:39:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:52,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:52,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:52,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:52,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:52,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:53,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:57,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:57,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:39:57,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:39:57,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:39:57,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:57,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:57,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 04:39:57,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:39:57,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:58,026 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:58,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:58,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:58,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:58,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:58,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:39:58,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:58,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:58,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:58,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:58,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:58,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:58,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:58,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:58,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 04:39:58,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:58,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:39:58,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:58,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:58,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:58,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:39:58,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:58,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:39:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:58,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:58,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:58,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:39:58,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:58,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:39:58,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:58,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:58,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:58,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:39:58,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:58,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:39:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:58,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:58,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:58,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:39:58,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:58,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:39:58,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:58,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:58,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:58,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:39:58,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:58,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:39:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:58,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:58,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:58,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:58,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:58,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:39:58,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:58,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:58,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:39:58,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:39:58,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:58,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 04:39:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:58,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:58,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:58,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:58,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:58,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:39:58,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:58,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:58,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:58,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:58,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:39:58,290 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 04:39:58,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656256042] [2020-10-27 04:39:58,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:58,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:39:58,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507610032] [2020-10-27 04:39:58,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:39:58,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:58,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:39:58,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:58,296 INFO L87 Difference]: Start difference. First operand 35201 states and 48024 transitions. Second operand 9 states. [2020-10-27 04:39:58,625 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:40:03,207 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:40:04,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:04,309 INFO L93 Difference]: Finished difference Result 91673 states and 125679 transitions. [2020-10-27 04:40:04,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:40:04,309 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-27 04:40:04,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:04,578 INFO L225 Difference]: With dead ends: 91673 [2020-10-27 04:40:04,578 INFO L226 Difference]: Without dead ends: 60084 [2020-10-27 04:40:04,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:40:04,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60084 states. [2020-10-27 04:40:08,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60084 to 55819. [2020-10-27 04:40:08,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55819 states. [2020-10-27 04:40:08,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55819 states to 55819 states and 75792 transitions. [2020-10-27 04:40:08,771 INFO L78 Accepts]: Start accepts. Automaton has 55819 states and 75792 transitions. Word has length 93 [2020-10-27 04:40:08,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:08,772 INFO L481 AbstractCegarLoop]: Abstraction has 55819 states and 75792 transitions. [2020-10-27 04:40:08,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:08,772 INFO L276 IsEmpty]: Start isEmpty. Operand 55819 states and 75792 transitions. [2020-10-27 04:40:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 04:40:08,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:08,837 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] [2020-10-27 04:40:08,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:40:08,838 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:08,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:08,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1047834590, now seen corresponding path program 1 times [2020-10-27 04:40:08,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:08,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413289489] [2020-10-27 04:40:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:08,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:08,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:08,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:08,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:09,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:10,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:10,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:13,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:13,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 04:40:13,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:40:13,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:40:13,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:13,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:13,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:40:13,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 04:40:13,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:14,217 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:14,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:14,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:14,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:14,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:14,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:14,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:40:14,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:14,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:14,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:14,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:14,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:14,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:14,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:14,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 04:40:14,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:40:14,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 04:40:14,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:14,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:14,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:14,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:40:14,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:14,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:40:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:14,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:14,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:14,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:40:14,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:14,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:40:14,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:14,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:14,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:14,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:40:14,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:14,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:40:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:14,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:14,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:14,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:40:14,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:14,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:40:14,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:14,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:14,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:14,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:40:14,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:14,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:40:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:14,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:14,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:14,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:40:14,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:14,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:40:14,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:14,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:14,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:40:14,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:14,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:14,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:40:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:14,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:14,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:14,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:14,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:14,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:40:14,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:14,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:14,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:14,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:14,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:14,567 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 04:40:14,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413289489] [2020-10-27 04:40:14,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:14,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:14,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857738236] [2020-10-27 04:40:14,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:14,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:14,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:14,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:14,570 INFO L87 Difference]: Start difference. First operand 55819 states and 75792 transitions. Second operand 9 states. [2020-10-27 04:40:14,952 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:15,321 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:15,732 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:40:16,105 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:40:17,544 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:40:24,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:24,595 INFO L93 Difference]: Finished difference Result 94978 states and 128496 transitions. [2020-10-27 04:40:24,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:40:24,596 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-27 04:40:24,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:24,881 INFO L225 Difference]: With dead ends: 94978 [2020-10-27 04:40:24,881 INFO L226 Difference]: Without dead ends: 70374 [2020-10-27 04:40:24,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:40:25,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70374 states. [2020-10-27 04:40:30,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70374 to 64464. [2020-10-27 04:40:30,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64464 states. [2020-10-27 04:40:30,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64464 states to 64464 states and 86633 transitions. [2020-10-27 04:40:30,429 INFO L78 Accepts]: Start accepts. Automaton has 64464 states and 86633 transitions. Word has length 96 [2020-10-27 04:40:30,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:30,429 INFO L481 AbstractCegarLoop]: Abstraction has 64464 states and 86633 transitions. [2020-10-27 04:40:30,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 64464 states and 86633 transitions. [2020-10-27 04:40:30,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 04:40:30,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:30,458 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] [2020-10-27 04:40:30,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:40:30,458 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:30,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:30,458 INFO L82 PathProgramCache]: Analyzing trace with hash -862964612, now seen corresponding path program 1 times [2020-10-27 04:40:30,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:30,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350934049] [2020-10-27 04:40:30,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:30,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:30,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:30,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:30,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:31,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:35,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:35,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 04:40:35,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:40:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:40:35,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:40:35,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 04:40:35,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:35,812 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:35,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:35,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:35,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:35,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:35,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:40:35,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:35,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:35,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:35,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:35,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:35,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:35,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:40:35,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:40:35,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 04:40:35,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:40:35,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:35,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:40:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:35,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:35,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:35,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:40:35,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:35,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:40:35,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:40:35,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:36,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:40:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:36,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:36,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:36,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:40:36,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:36,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:40:36,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:40:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:36,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:36,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:40:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:36,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:36,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:36,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:40:36,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:36,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:40:36,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:36,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:36,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:40:36,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:36,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:36,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:40:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:36,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:36,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:36,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:36,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:36,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:40:36,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:36,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:36,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:36,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:36,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:36,133 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 04:40:36,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350934049] [2020-10-27 04:40:36,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:36,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:36,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573018218] [2020-10-27 04:40:36,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:36,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:36,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:36,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:36,135 INFO L87 Difference]: Start difference. First operand 64464 states and 86633 transitions. Second operand 9 states. [2020-10-27 04:40:36,508 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:36,873 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:37,304 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:40:37,669 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:40:39,094 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:40:46,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:46,422 INFO L93 Difference]: Finished difference Result 103454 states and 138875 transitions. [2020-10-27 04:40:46,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:40:46,423 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-27 04:40:46,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:46,654 INFO L225 Difference]: With dead ends: 103454 [2020-10-27 04:40:46,655 INFO L226 Difference]: Without dead ends: 73873 [2020-10-27 04:40:46,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:40:47,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73873 states. [2020-10-27 04:40:51,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73873 to 64375. [2020-10-27 04:40:51,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64375 states. [2020-10-27 04:40:51,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64375 states to 64375 states and 85958 transitions. [2020-10-27 04:40:51,494 INFO L78 Accepts]: Start accepts. Automaton has 64375 states and 85958 transitions. Word has length 96 [2020-10-27 04:40:51,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:51,495 INFO L481 AbstractCegarLoop]: Abstraction has 64375 states and 85958 transitions. [2020-10-27 04:40:51,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:51,495 INFO L276 IsEmpty]: Start isEmpty. Operand 64375 states and 85958 transitions. [2020-10-27 04:40:51,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 04:40:51,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:51,537 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] [2020-10-27 04:40:51,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:40:51,538 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:51,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:51,538 INFO L82 PathProgramCache]: Analyzing trace with hash -305804957, now seen corresponding path program 1 times [2020-10-27 04:40:51,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:51,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855823063] [2020-10-27 04:40:51,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:51,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:51,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:52,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:52,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 04:40:52,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:40:52,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1145 [2020-10-27 04:40:52,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:40:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 04:40:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:40:52,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:53,088 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:53,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:53,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:53,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:53,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:53,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:53,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:40:53,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:53,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:53,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:53,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:53,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:53,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:53,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:53,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:53,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:40:53,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:53,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 04:40:53,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:53,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:40:53,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:53,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 04:40:53,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:53,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:40:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:53,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:53,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:53,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:40:53,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:53,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 04:40:53,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:40:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:40:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:40:53,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:53,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:40:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:53,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:53,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:53,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:40:53,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:53,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:40:53,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:53,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:40:53,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:40:53,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:40:53,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:53,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:40:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:53,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:53,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:53,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:40:53,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:40:53,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:40:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:40:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:40:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:53,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:40:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:53,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:53,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:53,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:53,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:53,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:53,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:53,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:40:53,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:40:53,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:53,488 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 04:40:53,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855823063] [2020-10-27 04:40:53,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:53,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:40:53,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107864733] [2020-10-27 04:40:53,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:40:53,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:53,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:40:53,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:40:53,490 INFO L87 Difference]: Start difference. First operand 64375 states and 85958 transitions. Second operand 13 states. [2020-10-27 04:40:53,885 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:40:54,626 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:40:54,968 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:40:58,487 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:40:58,850 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:40:59,210 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:41:04,087 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 04:41:15,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:41:15,506 INFO L93 Difference]: Finished difference Result 310150 states and 421432 transitions. [2020-10-27 04:41:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 04:41:15,506 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 96 [2020-10-27 04:41:15,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:41:16,715 INFO L225 Difference]: With dead ends: 310150 [2020-10-27 04:41:16,715 INFO L226 Difference]: Without dead ends: 254339 [2020-10-27 04:41:16,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=574, Invalid=1976, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 04:41:17,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254339 states. [2020-10-27 04:41:32,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254339 to 233435. [2020-10-27 04:41:32,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233435 states.