/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/eca-rers2012/Problem03_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:54:23,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:54:23,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:54:23,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:54:23,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:54:23,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:54:23,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:54:23,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:54:23,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:54:23,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:54:23,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:54:23,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:54:23,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:54:23,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:54:23,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:54:23,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:54:23,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:54:23,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:54:23,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:54:23,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:54:23,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:54:23,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:54:24,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:54:24,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:54:24,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:54:24,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:54:24,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:54:24,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:54:24,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:54:24,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:54:24,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:54:24,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:54:24,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:54:24,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:54:24,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:54:24,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:54:24,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:54:24,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:54:24,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:54:24,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:54:24,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:54:24,043 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 [2020-10-29 04:54:24,114 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:54:24,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:54:24,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:54:24,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:54:24,119 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:54:24,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:54:24,120 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:54:24,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:54:24,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:54:24,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:54:24,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:54:24,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:54:24,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:54:24,123 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:54:24,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:54:24,123 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:54:24,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:54:24,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:54:24,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:54:24,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:54:24,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:54:24,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:54:24,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:54:24,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:54:24,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:54:24,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:54:24,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:54:24,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:54:24,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:54:24,127 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:54:24,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:54:24,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:54:24,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:54:24,607 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:54:24,608 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:54:24,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label18.c [2020-10-29 04:54:24,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ac1b626d/138da6b551444eb49284f975a0bc95d8/FLAG65ae48a9c [2020-10-29 04:54:25,619 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:54:25,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label18.c [2020-10-29 04:54:25,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ac1b626d/138da6b551444eb49284f975a0bc95d8/FLAG65ae48a9c [2020-10-29 04:54:25,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ac1b626d/138da6b551444eb49284f975a0bc95d8 [2020-10-29 04:54:25,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:54:25,745 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:54:25,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:54:25,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:54:25,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:54:25,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:54:25" (1/1) ... [2020-10-29 04:54:25,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c40ebb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:25, skipping insertion in model container [2020-10-29 04:54:25,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:54:25" (1/1) ... [2020-10-29 04:54:25,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:54:25,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:54:26,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:54:26,697 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:54:27,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:54:27,237 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:54:27,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:27 WrapperNode [2020-10-29 04:54:27,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:54:27,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:54:27,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:54:27,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:54:27,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:27" (1/1) ... [2020-10-29 04:54:27,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:27" (1/1) ... [2020-10-29 04:54:27,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:27" (1/1) ... [2020-10-29 04:54:27,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:27" (1/1) ... [2020-10-29 04:54:27,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:27" (1/1) ... [2020-10-29 04:54:27,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:27" (1/1) ... [2020-10-29 04:54:27,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:27" (1/1) ... [2020-10-29 04:54:27,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:54:27,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:54:27,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:54:27,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:54:27,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:27" (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 [2020-10-29 04:54:27,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:54:27,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:54:27,587 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:54:27,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:54:27,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:54:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:54:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:54:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:54:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:54:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:54:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:54:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:54:27,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:54:27,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:54:27,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:54:27,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:54:27,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:54:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:54:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:54:30,343 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:54:30,343 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:54:30,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:54:30 BoogieIcfgContainer [2020-10-29 04:54:30,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:54:30,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:54:30,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:54:30,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:54:30,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:54:25" (1/3) ... [2020-10-29 04:54:30,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350861d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:54:30, skipping insertion in model container [2020-10-29 04:54:30,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:27" (2/3) ... [2020-10-29 04:54:30,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350861d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:54:30, skipping insertion in model container [2020-10-29 04:54:30,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:54:30" (3/3) ... [2020-10-29 04:54:30,356 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label18.c [2020-10-29 04:54:30,369 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:54:30,375 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:54:30,389 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:54:30,420 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:54:30,421 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:54:30,421 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:54:30,421 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:54:30,421 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:54:30,421 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:54:30,421 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:54:30,422 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:54:30,447 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:54:30,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-29 04:54:30,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:30,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:30,470 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:30,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:30,477 INFO L82 PathProgramCache]: Analyzing trace with hash 453213208, now seen corresponding path program 1 times [2020-10-29 04:54:30,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:30,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356712108] [2020-10-29 04:54:30,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:32,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:35,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:35,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-29 04:54:35,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:54:35,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4163 [2020-10-29 04:54:35,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:35,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:54:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:54:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-29 04:54:35,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:54:35,793 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:35,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:35,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:35,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:35,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:35,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:35,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 04:54:35,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:35,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:54:35,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:54:36,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:54:36,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356712108] [2020-10-29 04:54:36,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:54:36,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:54:36,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405735019] [2020-10-29 04:54:36,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:54:36,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:36,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:54:36,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:54:36,074 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:54:36,448 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:54:40,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:40,369 INFO L93 Difference]: Finished difference Result 869 states and 1524 transitions. [2020-10-29 04:54:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:54:40,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 210 [2020-10-29 04:54:40,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:40,393 INFO L225 Difference]: With dead ends: 869 [2020-10-29 04:54:40,394 INFO L226 Difference]: Without dead ends: 477 [2020-10-29 04:54:40,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:54:40,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-10-29 04:54:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 468. [2020-10-29 04:54:40,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-10-29 04:54:40,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 722 transitions. [2020-10-29 04:54:40,555 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 722 transitions. Word has length 210 [2020-10-29 04:54:40,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:40,557 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 722 transitions. [2020-10-29 04:54:40,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:54:40,557 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 722 transitions. [2020-10-29 04:54:40,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 04:54:40,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:40,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:40,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:54:40,565 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:40,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:40,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1790486012, now seen corresponding path program 1 times [2020-10-29 04:54:40,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:40,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746443083] [2020-10-29 04:54:40,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:40,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:40,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:40,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:41,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:42,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:44,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:44,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:44,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-29 04:54:44,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:54:44,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4046 [2020-10-29 04:54:44,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:44,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:44,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:54:44,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-29 04:54:44,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 04:54:45,178 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:45,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:45,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:45,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:45,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:45,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:45,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 04:54:45,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:45,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:45,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:45,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:45,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:45,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:54:45,352 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:54:45,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:45,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:45,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:45,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:45,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:54:45,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:54:45,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 04:54:45,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:45,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:54:45,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:54:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:54:45,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746443083] [2020-10-29 04:54:45,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:45,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:54:45,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702581444] [2020-10-29 04:54:45,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:54:45,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:45,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:54:45,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:54:45,592 INFO L87 Difference]: Start difference. First operand 468 states and 722 transitions. Second operand 5 states. [2020-10-29 04:54:46,007 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:54:49,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:49,216 INFO L93 Difference]: Finished difference Result 1354 states and 2109 transitions. [2020-10-29 04:54:49,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:54:49,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-29 04:54:49,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:49,223 INFO L225 Difference]: With dead ends: 1354 [2020-10-29 04:54:49,223 INFO L226 Difference]: Without dead ends: 471 [2020-10-29 04:54:49,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:54:49,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-29 04:54:49,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 467. [2020-10-29 04:54:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-29 04:54:49,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 720 transitions. [2020-10-29 04:54:49,260 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 720 transitions. Word has length 220 [2020-10-29 04:54:49,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:49,261 INFO L481 AbstractCegarLoop]: Abstraction has 467 states and 720 transitions. [2020-10-29 04:54:49,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:54:49,261 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 720 transitions. [2020-10-29 04:54:49,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-29 04:54:49,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:49,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:49,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:54:49,268 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:49,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:49,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1660123789, now seen corresponding path program 1 times [2020-10-29 04:54:49,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:49,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855431930] [2020-10-29 04:54:49,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:49,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:49,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:51,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:52,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:52,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-29 04:54:52,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:54:52,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3138 [2020-10-29 04:54:52,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:52,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:52,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:52,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 04:54:52,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 04:54:52,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:52,941 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:52,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:52,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:52,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:52,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:52,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:54:52,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:52,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:54:53,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:53,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:53,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:53,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:54:53,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:53,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 04:54:53,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:53,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:53,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 04:54:53,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:54:53,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855431930] [2020-10-29 04:54:53,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:53,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:54:53,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113337881] [2020-10-29 04:54:53,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:54:53,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:53,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:54:53,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:54:53,632 INFO L87 Difference]: Start difference. First operand 467 states and 720 transitions. Second operand 5 states. [2020-10-29 04:54:54,123 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-29 04:54:57,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:57,022 INFO L93 Difference]: Finished difference Result 1105 states and 1759 transitions. [2020-10-29 04:54:57,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:54:57,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-29 04:54:57,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:57,034 INFO L225 Difference]: With dead ends: 1105 [2020-10-29 04:54:57,034 INFO L226 Difference]: Without dead ends: 535 [2020-10-29 04:54:57,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:54:57,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-10-29 04:54:57,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 531. [2020-10-29 04:54:57,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-10-29 04:54:57,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 789 transitions. [2020-10-29 04:54:57,069 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 789 transitions. Word has length 224 [2020-10-29 04:54:57,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:57,071 INFO L481 AbstractCegarLoop]: Abstraction has 531 states and 789 transitions. [2020-10-29 04:54:57,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:54:57,071 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 789 transitions. [2020-10-29 04:54:57,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-29 04:54:57,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:57,078 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:57,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:54:57,078 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:57,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:57,079 INFO L82 PathProgramCache]: Analyzing trace with hash 787830319, now seen corresponding path program 1 times [2020-10-29 04:54:57,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:57,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296652775] [2020-10-29 04:54:57,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:57,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:57,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:59,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:59,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:59,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 04:54:59,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:54:59,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2777 [2020-10-29 04:54:59,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:59,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:59,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:59,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 04:54:59,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-29 04:54:59,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:00,283 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:00,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:00,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:00,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:00,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:00,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:00,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:55:00,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:00,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:00,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:00,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:00,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:00,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:00,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:00,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:00,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:00,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:55:00,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:00,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 04:55:00,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:00,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:55:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:00,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296652775] [2020-10-29 04:55:00,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:00,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:55:00,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064293523] [2020-10-29 04:55:00,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:55:00,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:00,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:55:00,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:00,660 INFO L87 Difference]: Start difference. First operand 531 states and 789 transitions. Second operand 6 states. [2020-10-29 04:55:00,969 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:01,585 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:05,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:05,299 INFO L93 Difference]: Finished difference Result 1923 states and 2961 transitions. [2020-10-29 04:55:05,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:55:05,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 226 [2020-10-29 04:55:05,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:05,308 INFO L225 Difference]: With dead ends: 1923 [2020-10-29 04:55:05,309 INFO L226 Difference]: Without dead ends: 1398 [2020-10-29 04:55:05,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:55:05,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2020-10-29 04:55:05,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 963. [2020-10-29 04:55:05,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-10-29 04:55:05,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1391 transitions. [2020-10-29 04:55:05,356 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1391 transitions. Word has length 226 [2020-10-29 04:55:05,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:05,356 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1391 transitions. [2020-10-29 04:55:05,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:55:05,357 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1391 transitions. [2020-10-29 04:55:05,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-29 04:55:05,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:05,362 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:05,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:55:05,362 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:05,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:05,363 INFO L82 PathProgramCache]: Analyzing trace with hash 558893757, now seen corresponding path program 1 times [2020-10-29 04:55:05,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:05,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670825505] [2020-10-29 04:55:05,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:05,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:05,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:07,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:08,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:08,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-29 04:55:08,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:55:08,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2612 [2020-10-29 04:55:08,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:08,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:08,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:08,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 04:55:08,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-29 04:55:08,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:08,392 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:08,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:08,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:08,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:08,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:08,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:08,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:55:08,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:08,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:08,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:08,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:08,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:08,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:08,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:08,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:08,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:08,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 04:55:08,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:08,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 04:55:08,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:08,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:08,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:08,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:08,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 04:55:08,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:08,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670825505] [2020-10-29 04:55:08,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:08,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:08,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680297947] [2020-10-29 04:55:08,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:08,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:08,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:08,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:08,706 INFO L87 Difference]: Start difference. First operand 963 states and 1391 transitions. Second operand 5 states. [2020-10-29 04:55:08,993 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:12,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:12,194 INFO L93 Difference]: Finished difference Result 2781 states and 4120 transitions. [2020-10-29 04:55:12,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:12,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-29 04:55:12,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:12,207 INFO L225 Difference]: With dead ends: 2781 [2020-10-29 04:55:12,207 INFO L226 Difference]: Without dead ends: 1824 [2020-10-29 04:55:12,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:12,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2020-10-29 04:55:12,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1802. [2020-10-29 04:55:12,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1802 states. [2020-10-29 04:55:12,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2612 transitions. [2020-10-29 04:55:12,281 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2612 transitions. Word has length 241 [2020-10-29 04:55:12,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:12,282 INFO L481 AbstractCegarLoop]: Abstraction has 1802 states and 2612 transitions. [2020-10-29 04:55:12,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:12,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2612 transitions. [2020-10-29 04:55:12,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-29 04:55:12,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:12,291 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:12,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:55:12,291 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:12,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:12,292 INFO L82 PathProgramCache]: Analyzing trace with hash -2108477318, now seen corresponding path program 1 times [2020-10-29 04:55:12,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:12,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726050875] [2020-10-29 04:55:12,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:12,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:12,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:14,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:16,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:17,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:17,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:17,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-29 04:55:17,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:55:17,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-29 04:55:17,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:17,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:17,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:17,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-29 04:55:17,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-29 04:55:17,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:17,830 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:17,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:17,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:17,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:17,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:17,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:17,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:55:17,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:17,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:17,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:17,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:17,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:17,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:17,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:55:17,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:17,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:55:17,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:17,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:17,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:17,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:17,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:17,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:55:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:18,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:18,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:18,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:55:18,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:18,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 04:55:18,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:18,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:18,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:18,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:18,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 04:55:18,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:18,188 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 04:55:18,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726050875] [2020-10-29 04:55:18,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:18,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:18,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336356655] [2020-10-29 04:55:18,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:18,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:18,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:18,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:18,191 INFO L87 Difference]: Start difference. First operand 1802 states and 2612 transitions. Second operand 5 states. [2020-10-29 04:55:18,570 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:22,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:22,035 INFO L93 Difference]: Finished difference Result 5280 states and 7862 transitions. [2020-10-29 04:55:22,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:22,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 255 [2020-10-29 04:55:22,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:22,072 INFO L225 Difference]: With dead ends: 5280 [2020-10-29 04:55:22,072 INFO L226 Difference]: Without dead ends: 3484 [2020-10-29 04:55:22,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:22,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3484 states. [2020-10-29 04:55:22,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3484 to 3479. [2020-10-29 04:55:22,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3479 states. [2020-10-29 04:55:22,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 4858 transitions. [2020-10-29 04:55:22,215 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 4858 transitions. Word has length 255 [2020-10-29 04:55:22,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:22,216 INFO L481 AbstractCegarLoop]: Abstraction has 3479 states and 4858 transitions. [2020-10-29 04:55:22,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:22,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 4858 transitions. [2020-10-29 04:55:22,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-29 04:55:22,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:22,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:22,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:55:22,232 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:22,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:22,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1600441745, now seen corresponding path program 1 times [2020-10-29 04:55:22,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:22,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036779115] [2020-10-29 04:55:22,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:22,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:22,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:23,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:24,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:25,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:25,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-29 04:55:25,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:55:25,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3626 [2020-10-29 04:55:25,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:25,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:25,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:55:25,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:55:25,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-29 04:55:25,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:26,272 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:26,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:26,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:26,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:26,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:26,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:26,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:55:26,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:26,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:26,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:26,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:26,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:26,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:26,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:26,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:26,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:26,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:55:26,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:26,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 04:55:26,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:26,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:55:26,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:26,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:55:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:26,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:26,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:26,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:55:26,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:26,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 04:55:26,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:26,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:26,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:26,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:26,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 04:55:26,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:55:26,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036779115] [2020-10-29 04:55:26,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:26,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:55:26,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967585785] [2020-10-29 04:55:26,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:55:26,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:26,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:55:26,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:55:26,778 INFO L87 Difference]: Start difference. First operand 3479 states and 4858 transitions. Second operand 7 states. [2020-10-29 04:55:27,138 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:30,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:30,532 INFO L93 Difference]: Finished difference Result 10200 states and 15278 transitions. [2020-10-29 04:55:30,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:55:30,533 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-29 04:55:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:30,588 INFO L225 Difference]: With dead ends: 10200 [2020-10-29 04:55:30,588 INFO L226 Difference]: Without dead ends: 6727 [2020-10-29 04:55:30,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:55:30,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6727 states. [2020-10-29 04:55:30,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6727 to 6664. [2020-10-29 04:55:30,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6664 states. [2020-10-29 04:55:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6664 states to 6664 states and 9606 transitions. [2020-10-29 04:55:30,894 INFO L78 Accepts]: Start accepts. Automaton has 6664 states and 9606 transitions. Word has length 255 [2020-10-29 04:55:30,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:30,895 INFO L481 AbstractCegarLoop]: Abstraction has 6664 states and 9606 transitions. [2020-10-29 04:55:30,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:55:30,895 INFO L276 IsEmpty]: Start isEmpty. Operand 6664 states and 9606 transitions. [2020-10-29 04:55:30,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-29 04:55:30,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:30,930 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:30,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:55:30,931 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:30,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:30,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1062196532, now seen corresponding path program 1 times [2020-10-29 04:55:30,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:30,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258791571] [2020-10-29 04:55:30,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:31,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:31,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:32,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:35,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:35,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:35,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-29 04:55:35,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:55:35,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4875 [2020-10-29 04:55:35,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:35,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:55:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-29 04:55:35,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:36,252 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:36,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:36,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:36,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:36,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:36,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:36,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 04:55:36,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:36,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:36,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:36,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:36,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:36,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:36,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:36,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:36,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:36,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:55:36,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:36,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 04:55:36,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:36,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:36,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:36,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:36,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 04:55:36,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:36,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:55:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:36,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:36,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:36,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:55:36,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:36,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 04:55:36,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:36,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:36,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:36,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:36,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:55:36,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:36,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:55:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:36,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:36,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:36,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:55:36,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:36,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-29 04:55:36,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:36,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:36,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:55:36,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:36,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 04:55:36,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-29 04:55:37,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258791571] [2020-10-29 04:55:37,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:37,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:55:37,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125982087] [2020-10-29 04:55:37,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:55:37,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:37,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:55:37,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:55:37,120 INFO L87 Difference]: Start difference. First operand 6664 states and 9606 transitions. Second operand 9 states. [2020-10-29 04:55:37,426 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:55:37,813 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:39,799 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:44,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:44,621 INFO L93 Difference]: Finished difference Result 26497 states and 41380 transitions. [2020-10-29 04:55:44,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:55:44,622 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 282 [2020-10-29 04:55:44,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:44,766 INFO L225 Difference]: With dead ends: 26497 [2020-10-29 04:55:44,766 INFO L226 Difference]: Without dead ends: 19839 [2020-10-29 04:55:44,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:55:44,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19839 states. [2020-10-29 04:55:45,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19839 to 19626. [2020-10-29 04:55:45,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19626 states. [2020-10-29 04:55:45,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19626 states to 19626 states and 28186 transitions. [2020-10-29 04:55:45,729 INFO L78 Accepts]: Start accepts. Automaton has 19626 states and 28186 transitions. Word has length 282 [2020-10-29 04:55:45,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:45,730 INFO L481 AbstractCegarLoop]: Abstraction has 19626 states and 28186 transitions. [2020-10-29 04:55:45,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:55:45,730 INFO L276 IsEmpty]: Start isEmpty. Operand 19626 states and 28186 transitions. [2020-10-29 04:55:45,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-29 04:55:45,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:45,810 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:45,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:55:45,810 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:45,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:45,811 INFO L82 PathProgramCache]: Analyzing trace with hash 109294304, now seen corresponding path program 1 times [2020-10-29 04:55:45,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:45,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051861980] [2020-10-29 04:55:45,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:45,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:45,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:46,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:49,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:50,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:50,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-29 04:55:50,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:55:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 04:55:50,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:50,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:55:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 04:55:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:51,362 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:51,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:51,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:51,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:51,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:51,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:51,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 04:55:51,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:51,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:51,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:51,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:51,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:51,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:51,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:51,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:51,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:55:51,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:51,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 04:55:51,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:51,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 04:55:51,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:51,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 04:55:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:51,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:51,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:51,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:55:51,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:51,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 04:55:51,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:51,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:55:51,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:51,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:55:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:51,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:52,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:52,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 04:55:52,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:52,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-29 04:55:52,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:52,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:55:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 04:55:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 16 proven. 108 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-29 04:55:52,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051861980] [2020-10-29 04:55:52,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:52,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:55:52,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785118102] [2020-10-29 04:55:52,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:55:52,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:52,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:55:52,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:55:52,641 INFO L87 Difference]: Start difference. First operand 19626 states and 28186 transitions. Second operand 9 states. [2020-10-29 04:55:52,951 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:55:55,761 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 172 [2020-10-29 04:55:57,455 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-29 04:56:01,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:01,287 INFO L93 Difference]: Finished difference Result 59518 states and 86241 transitions. [2020-10-29 04:56:01,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 04:56:01,288 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 321 [2020-10-29 04:56:01,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:01,507 INFO L225 Difference]: With dead ends: 59518 [2020-10-29 04:56:01,508 INFO L226 Difference]: Without dead ends: 39778 [2020-10-29 04:56:01,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:56:01,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39778 states. [2020-10-29 04:56:02,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39778 to 39604. [2020-10-29 04:56:02,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39604 states. [2020-10-29 04:56:02,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39604 states to 39604 states and 56887 transitions. [2020-10-29 04:56:02,948 INFO L78 Accepts]: Start accepts. Automaton has 39604 states and 56887 transitions. Word has length 321 [2020-10-29 04:56:02,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:02,949 INFO L481 AbstractCegarLoop]: Abstraction has 39604 states and 56887 transitions. [2020-10-29 04:56:02,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:56:02,949 INFO L276 IsEmpty]: Start isEmpty. Operand 39604 states and 56887 transitions. [2020-10-29 04:56:03,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-29 04:56:03,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:03,089 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:03,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:56:03,089 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:03,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:03,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1449764184, now seen corresponding path program 1 times [2020-10-29 04:56:03,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:03,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977573974] [2020-10-29 04:56:03,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:03,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:03,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:04,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:08,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:08,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:08,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-29 04:56:08,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:56:08,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 04:56:08,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:08,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 04:56:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-29 04:56:08,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:08,680 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:08,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:08,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:08,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:08,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:08,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:08,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:56:08,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:08,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:08,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:08,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:08,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:08,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:08,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:08,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:08,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:08,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:56:08,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:08,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:56:08,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:08,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:08,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:08,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:08,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:08,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:08,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:56:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:08,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:09,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:09,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 04:56:09,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:09,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 04:56:09,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:09,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:09,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:09,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:09,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 04:56:09,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-29 04:56:09,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977573974] [2020-10-29 04:56:09,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:09,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:56:09,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158041462] [2020-10-29 04:56:09,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:56:09,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:09,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:56:09,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:56:09,290 INFO L87 Difference]: Start difference. First operand 39604 states and 56887 transitions. Second operand 5 states. [2020-10-29 04:56:09,669 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:13,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:13,871 INFO L93 Difference]: Finished difference Result 103081 states and 151235 transitions. [2020-10-29 04:56:13,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:56:13,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 339 [2020-10-29 04:56:13,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:14,184 INFO L225 Difference]: With dead ends: 103081 [2020-10-29 04:56:14,184 INFO L226 Difference]: Without dead ends: 63483 [2020-10-29 04:56:14,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:56:14,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63483 states. [2020-10-29 04:56:16,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63483 to 63412. [2020-10-29 04:56:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63412 states. [2020-10-29 04:56:16,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63412 states to 63412 states and 91793 transitions. [2020-10-29 04:56:16,556 INFO L78 Accepts]: Start accepts. Automaton has 63412 states and 91793 transitions. Word has length 339 [2020-10-29 04:56:16,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:16,557 INFO L481 AbstractCegarLoop]: Abstraction has 63412 states and 91793 transitions. [2020-10-29 04:56:16,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:56:16,557 INFO L276 IsEmpty]: Start isEmpty. Operand 63412 states and 91793 transitions. [2020-10-29 04:56:17,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-29 04:56:17,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:17,187 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:17,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:56:17,188 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:17,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:17,192 INFO L82 PathProgramCache]: Analyzing trace with hash 716358838, now seen corresponding path program 1 times [2020-10-29 04:56:17,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:17,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624616438] [2020-10-29 04:56:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:17,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:17,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:17,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:18,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:20,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:21,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:22,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:22,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-29 04:56:22,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:56:22,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 04:56:22,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:22,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:22,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:56:22,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 04:56:22,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 04:56:22,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:22,677 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:22,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:22,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:22,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:22,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:22,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:22,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:56:22,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:22,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:22,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:22,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:22,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:22,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:22,813 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:56:22,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:22,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:22,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:22,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:56:22,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:22,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 04:56:22,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:22,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:22,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:22,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:22,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:56:22,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:22,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:56:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:22,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:22,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:22,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:56:22,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:22,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 04:56:22,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:22,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 04:56:22,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:22,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:56:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:22,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:22,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:23,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:23,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 04:56:23,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:56:23,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 04:56:23,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:23,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:23,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:23,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:23,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 04:56:23,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:23,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 04:56:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:23,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:23,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:23,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 04:56:23,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:23,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 04:56:23,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:23,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:23,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:23,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:23,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 04:56:23,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 203 proven. 10 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-29 04:56:23,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624616438] [2020-10-29 04:56:23,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:23,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:56:23,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200462320] [2020-10-29 04:56:23,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:56:23,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:23,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:56:23,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:56:23,458 INFO L87 Difference]: Start difference. First operand 63412 states and 91793 transitions. Second operand 8 states. [2020-10-29 04:56:23,888 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:24,585 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:31,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:31,504 INFO L93 Difference]: Finished difference Result 141580 states and 230281 transitions. [2020-10-29 04:56:31,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:56:31,505 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 343 [2020-10-29 04:56:31,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:32,150 INFO L225 Difference]: With dead ends: 141580 [2020-10-29 04:56:32,150 INFO L226 Difference]: Without dead ends: 78174 [2020-10-29 04:56:32,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:56:32,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78174 states. [2020-10-29 04:56:35,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78174 to 76005. [2020-10-29 04:56:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76005 states. [2020-10-29 04:56:35,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76005 states to 76005 states and 104383 transitions. [2020-10-29 04:56:35,866 INFO L78 Accepts]: Start accepts. Automaton has 76005 states and 104383 transitions. Word has length 343 [2020-10-29 04:56:35,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:35,866 INFO L481 AbstractCegarLoop]: Abstraction has 76005 states and 104383 transitions. [2020-10-29 04:56:35,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:56:35,867 INFO L276 IsEmpty]: Start isEmpty. Operand 76005 states and 104383 transitions. [2020-10-29 04:56:36,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-29 04:56:36,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:36,009 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:36,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:56:36,010 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:36,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:36,010 INFO L82 PathProgramCache]: Analyzing trace with hash -692943071, now seen corresponding path program 1 times [2020-10-29 04:56:36,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:36,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851400475] [2020-10-29 04:56:36,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:36,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:36,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:36,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:36,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:38,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:41,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:41,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-29 04:56:41,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:56:41,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-29 04:56:41,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:41,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:41,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:56:41,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 04:56:41,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 04:56:41,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:41,452 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:41,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:41,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:41,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:41,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:41,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:41,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:56:41,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:41,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:41,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:41,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:41,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:41,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:41,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:41,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:41,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:41,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:56:41,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:41,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:56:41,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:41,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:41,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:41,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:41,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 04:56:41,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:41,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 04:56:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:41,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:41,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:41,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:56:41,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:41,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 04:56:41,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:41,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:41,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:41,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:41,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:56:41,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:41,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:56:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:41,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:41,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:41,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:41,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 04:56:41,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:56:41,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 04:56:41,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:41,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 04:56:41,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:41,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 04:56:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:41,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:41,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:41,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:56:41,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:41,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 04:56:41,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:41,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:56:41,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:41,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-29 04:56:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:41,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:42,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:42,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:56:42,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:42,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 04:56:42,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:42,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:42,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:42,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:42,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 04:56:42,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:42,237 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 233 proven. 12 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-29 04:56:42,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851400475] [2020-10-29 04:56:42,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:42,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:56:42,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007824089] [2020-10-29 04:56:42,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:56:42,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:42,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:56:42,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:56:42,239 INFO L87 Difference]: Start difference. First operand 76005 states and 104383 transitions. Second operand 9 states. [2020-10-29 04:56:42,530 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:43,309 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:47,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:47,311 INFO L93 Difference]: Finished difference Result 152636 states and 215162 transitions. [2020-10-29 04:56:47,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:56:47,312 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 350 [2020-10-29 04:56:47,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:48,074 INFO L225 Difference]: With dead ends: 152636 [2020-10-29 04:56:48,077 INFO L226 Difference]: Without dead ends: 76653 [2020-10-29 04:56:48,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:56:48,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76653 states. [2020-10-29 04:56:50,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76653 to 76083. [2020-10-29 04:56:50,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76083 states. [2020-10-29 04:56:51,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76083 states to 76083 states and 99806 transitions. [2020-10-29 04:56:51,255 INFO L78 Accepts]: Start accepts. Automaton has 76083 states and 99806 transitions. Word has length 350 [2020-10-29 04:56:51,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:51,257 INFO L481 AbstractCegarLoop]: Abstraction has 76083 states and 99806 transitions. [2020-10-29 04:56:51,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:56:51,257 INFO L276 IsEmpty]: Start isEmpty. Operand 76083 states and 99806 transitions. [2020-10-29 04:56:51,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-29 04:56:51,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:51,719 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:51,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:56:51,719 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:51,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:51,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1708076718, now seen corresponding path program 1 times [2020-10-29 04:56:51,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:51,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924418202] [2020-10-29 04:56:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:51,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:51,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:52,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:53,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:54,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:56,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:56,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-29 04:56:56,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:56:56,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 04:56:56,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:56,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:56,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:56:56,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-29 04:56:56,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:56:56,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:57,167 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:57,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:57,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:57,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:57,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:57,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:57,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:56:57,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:57,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:57,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:57,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:57,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:57,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:57,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:56:57,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:57,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:56:57,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:57,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:57,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:57,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:57,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:57,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:57,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:56:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:57,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:57,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:57,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:56:57,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:57,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 04:56:57,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:57,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:56:57,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:57,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:56:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:57,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:57,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:57,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:56:57,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:57,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 04:56:57,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:57,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:56:57,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:57,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 04:56:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:57,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:57,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:57,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 04:56:57,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:57,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 04:56:57,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:57,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:57,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:57,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:57,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 04:56:57,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:57,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-29 04:56:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:57,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:57,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:57,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:56:57,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:57,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:56:57,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:57,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:57,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:57,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 04:56:57,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:57,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:57,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-29 04:56:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:57,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:57,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:57,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:56:57,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:57,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 04:56:57,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:57,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:57,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:57,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 04:56:57,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:57,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 239 proven. 90 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-29 04:56:57,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924418202] [2020-10-29 04:56:57,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:57,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:56:57,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388464245] [2020-10-29 04:56:57,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:56:57,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:57,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:56:57,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:56:57,817 INFO L87 Difference]: Start difference. First operand 76083 states and 99806 transitions. Second operand 7 states. [2020-10-29 04:56:58,104 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:57:01,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:01,067 INFO L93 Difference]: Finished difference Result 140343 states and 183875 transitions. [2020-10-29 04:57:01,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:57:01,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 374 [2020-10-29 04:57:01,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:01,300 INFO L225 Difference]: With dead ends: 140343 [2020-10-29 04:57:01,300 INFO L226 Difference]: Without dead ends: 64282 [2020-10-29 04:57:01,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:57:01,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64282 states. [2020-10-29 04:57:03,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64282 to 64278. [2020-10-29 04:57:03,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64278 states. [2020-10-29 04:57:03,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64278 states to 64278 states and 82374 transitions. [2020-10-29 04:57:03,789 INFO L78 Accepts]: Start accepts. Automaton has 64278 states and 82374 transitions. Word has length 374 [2020-10-29 04:57:03,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:03,789 INFO L481 AbstractCegarLoop]: Abstraction has 64278 states and 82374 transitions. [2020-10-29 04:57:03,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:57:03,790 INFO L276 IsEmpty]: Start isEmpty. Operand 64278 states and 82374 transitions. [2020-10-29 04:57:03,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-29 04:57:03,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:03,869 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:57:03,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:57:03,870 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:03,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:03,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1842664104, now seen corresponding path program 1 times [2020-10-29 04:57:03,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:03,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366231628] [2020-10-29 04:57:03,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:03,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:03,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:04,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:04,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:04,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:06,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:08,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:08,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-29 04:57:08,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:57:08,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 04:57:08,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:08,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:57:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 04:57:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 04:57:08,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:09,276 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:09,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:09,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:09,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:09,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:09,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:09,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:57:09,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:09,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:09,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:09,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:09,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:09,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:09,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:09,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:09,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:09,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:57:09,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:09,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:57:09,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:09,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:09,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:09,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:57:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:09,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:09,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:09,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:57:09,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:09,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:57:09,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:09,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:57:09,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:09,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:57:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:09,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:09,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:09,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 04:57:09,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:09,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 04:57:09,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:09,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:09,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:09,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:09,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 04:57:09,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:09,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 04:57:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:09,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:09,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:09,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 04:57:09,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:09,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 04:57:09,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:09,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:09,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:09,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 04:57:09,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:09,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-29 04:57:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:09,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:09,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:09,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 04:57:09,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:09,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 04:57:09,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:09,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-29 04:57:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:09,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:10,046 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 244 proven. 98 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-29 04:57:10,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366231628] [2020-10-29 04:57:10,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:10,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:57:10,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441211487] [2020-10-29 04:57:10,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:57:10,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:10,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:57:10,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:57:10,048 INFO L87 Difference]: Start difference. First operand 64278 states and 82374 transitions. Second operand 8 states. [2020-10-29 04:57:10,734 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:57:11,499 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:57:16,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:16,323 INFO L93 Difference]: Finished difference Result 127825 states and 186672 transitions. [2020-10-29 04:57:16,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:57:16,324 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 388 [2020-10-29 04:57:16,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:17,188 INFO L225 Difference]: With dead ends: 127825 [2020-10-29 04:57:17,188 INFO L226 Difference]: Without dead ends: 94816 [2020-10-29 04:57:17,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:57:17,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94816 states. [2020-10-29 04:57:19,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94816 to 90381. [2020-10-29 04:57:19,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90381 states. [2020-10-29 04:57:20,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90381 states to 90381 states and 114236 transitions. [2020-10-29 04:57:20,014 INFO L78 Accepts]: Start accepts. Automaton has 90381 states and 114236 transitions. Word has length 388 [2020-10-29 04:57:20,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:20,015 INFO L481 AbstractCegarLoop]: Abstraction has 90381 states and 114236 transitions. [2020-10-29 04:57:20,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:57:20,015 INFO L276 IsEmpty]: Start isEmpty. Operand 90381 states and 114236 transitions. [2020-10-29 04:57:20,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-10-29 04:57:20,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:20,156 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:57:20,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:57:20,156 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:20,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:20,157 INFO L82 PathProgramCache]: Analyzing trace with hash 207940659, now seen corresponding path program 1 times [2020-10-29 04:57:20,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:20,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179951072] [2020-10-29 04:57:20,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:20,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:20,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:21,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:21,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:21,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:23,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:25,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:25,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-29 04:57:25,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:57:25,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 04:57:25,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:25,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 04:57:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:57:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-29 04:57:25,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:25,567 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:25,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:25,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:25,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:25,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:25,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:57:25,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:25,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:57:25,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:25,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:25,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:25,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 04:57:25,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:25,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 04:57:25,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:25,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:25,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:25,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:25,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 04:57:25,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:25,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 04:57:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:25,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:25,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:25,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:57:25,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:25,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 04:57:25,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:25,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:25,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:25,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:25,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 04:57:25,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:25,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 04:57:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:25,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:26,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:26,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 04:57:26,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:26,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 04:57:26,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:26,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 04:57:26,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:26,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-29 04:57:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:26,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:26,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:26,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 04:57:26,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:26,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 04:57:26,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:26,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 04:57:26,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:26,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-29 04:57:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:26,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:26,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:26,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 04:57:26,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:26,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 04:57:26,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:26,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:26,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:26,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-29 04:57:26,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:26,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:26,635 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 266 proven. 176 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-29 04:57:26,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179951072] [2020-10-29 04:57:26,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:26,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:57:26,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294730841] [2020-10-29 04:57:26,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:57:26,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:26,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:57:26,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:57:26,637 INFO L87 Difference]: Start difference. First operand 90381 states and 114236 transitions. Second operand 8 states. [2020-10-29 04:57:26,963 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:57:32,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:32,377 INFO L93 Difference]: Finished difference Result 243490 states and 311670 transitions. [2020-10-29 04:57:32,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 04:57:32,384 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 458 [2020-10-29 04:57:32,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:32,883 INFO L225 Difference]: With dead ends: 243490 [2020-10-29 04:57:32,883 INFO L226 Difference]: Without dead ends: 153131 [2020-10-29 04:57:32,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:57:33,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153131 states.