/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/Problem06_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:47:26,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:47:26,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:47:27,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:47:27,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:47:27,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:47:27,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:47:27,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:47:27,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:47:27,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:47:27,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:47:27,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:47:27,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:47:27,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:47:27,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:47:27,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:47:27,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:47:27,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:47:27,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:47:27,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:47:27,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:47:27,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:47:27,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:47:27,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:47:27,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:47:27,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:47:27,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:47:27,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:47:27,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:47:27,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:47:27,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:47:27,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:47:27,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:47:27,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:47:27,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:47:27,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:47:27,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:47:27,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:47:27,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:47:27,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:47:27,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:47:27,055 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 05:47:27,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:47:27,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:47:27,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:47:27,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:47:27,104 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:47:27,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:47:27,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:47:27,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:47:27,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:47:27,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:47:27,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:47:27,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:47:27,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:47:27,107 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:47:27,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:47:27,108 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:47:27,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:47:27,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:47:27,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:47:27,109 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:47:27,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:47:27,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:47:27,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:47:27,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:47:27,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:47:27,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:47:27,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:47:27,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:47:27,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:47:27,111 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:47:27,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:47:27,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:47:27,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:47:27,571 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:47:27,571 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:47:27,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label49.c [2020-10-29 05:47:27,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9a8d2632/c561c93c8ace45afa1ccc6b4bac4683f/FLAGc9449913e [2020-10-29 05:47:28,931 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:47:28,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label49.c [2020-10-29 05:47:28,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9a8d2632/c561c93c8ace45afa1ccc6b4bac4683f/FLAGc9449913e [2020-10-29 05:47:29,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9a8d2632/c561c93c8ace45afa1ccc6b4bac4683f [2020-10-29 05:47:29,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:47:29,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:47:29,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:47:29,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:47:29,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:47:29,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:47:29" (1/1) ... [2020-10-29 05:47:29,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca0bb4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:29, skipping insertion in model container [2020-10-29 05:47:29,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:47:29" (1/1) ... [2020-10-29 05:47:29,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:47:29,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:47:31,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:47:31,589 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:47:32,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:47:32,727 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:47:32,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:32 WrapperNode [2020-10-29 05:47:32,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:47:32,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:47:32,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:47:32,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:47:32,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:32" (1/1) ... [2020-10-29 05:47:32,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:32" (1/1) ... [2020-10-29 05:47:32,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:32" (1/1) ... [2020-10-29 05:47:32,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:32" (1/1) ... [2020-10-29 05:47:33,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:32" (1/1) ... [2020-10-29 05:47:33,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:32" (1/1) ... [2020-10-29 05:47:33,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:32" (1/1) ... [2020-10-29 05:47:33,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:47:33,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:47:33,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:47:33,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:47:33,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:32" (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 05:47:33,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:47:33,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:47:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:47:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:47:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:47:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:47:33,491 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:47:33,491 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:47:33,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:47:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:47:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:47:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:47:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:47:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:47:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:47:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:47:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:47:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:47:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:47:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:47:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:47:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:47:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:47:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:47:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:47:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:47:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:47:41,146 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:47:41,147 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:47:41,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:47:41 BoogieIcfgContainer [2020-10-29 05:47:41,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:47:41,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:47:41,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:47:41,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:47:41,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:47:29" (1/3) ... [2020-10-29 05:47:41,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396305c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:47:41, skipping insertion in model container [2020-10-29 05:47:41,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:32" (2/3) ... [2020-10-29 05:47:41,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396305c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:47:41, skipping insertion in model container [2020-10-29 05:47:41,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:47:41" (3/3) ... [2020-10-29 05:47:41,164 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label49.c [2020-10-29 05:47:41,176 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:47:41,182 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:47:41,195 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:47:41,230 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:47:41,230 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:47:41,230 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:47:41,230 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:47:41,230 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:47:41,231 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:47:41,231 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:47:41,231 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:47:41,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-29 05:47:41,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2020-10-29 05:47:41,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:47:41,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:47:41,364 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:47:41,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:47:41,371 INFO L82 PathProgramCache]: Analyzing trace with hash 2011261980, now seen corresponding path program 1 times [2020-10-29 05:47:41,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:47:41,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402697867] [2020-10-29 05:47:41,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:47:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:42,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:43,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:47,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:47,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1023 [2020-10-29 05:47:47,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:47:47,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5209 [2020-10-29 05:47:47,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:47,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:47:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:47:47,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1014 [2020-10-29 05:47:47,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:47:49,040 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:47:49,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:47:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:47:49,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:47:49,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:47:49,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:47:49,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:47:49,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 05:47:49,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:47:49,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:47:49,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:47:49,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:47:49,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:47:49,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:47:50,481 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 05:47:50,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402697867] [2020-10-29 05:47:50,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:47:50,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:47:50,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115861615] [2020-10-29 05:47:50,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:47:50,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:47:50,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:47:50,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:47:50,509 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 4 states. [2020-10-29 05:47:50,790 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:48:07,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:48:07,009 INFO L93 Difference]: Finished difference Result 3770 states and 7012 transitions. [2020-10-29 05:48:07,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:48:07,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1005 [2020-10-29 05:48:07,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:48:07,068 INFO L225 Difference]: With dead ends: 3770 [2020-10-29 05:48:07,068 INFO L226 Difference]: Without dead ends: 2387 [2020-10-29 05:48:07,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:48:07,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2020-10-29 05:48:07,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 2374. [2020-10-29 05:48:07,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2020-10-29 05:48:07,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3972 transitions. [2020-10-29 05:48:07,303 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3972 transitions. Word has length 1005 [2020-10-29 05:48:07,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:48:07,306 INFO L481 AbstractCegarLoop]: Abstraction has 2374 states and 3972 transitions. [2020-10-29 05:48:07,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:48:07,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3972 transitions. [2020-10-29 05:48:07,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2020-10-29 05:48:07,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:48:07,355 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:07,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:48:07,356 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:48:07,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:48:07,358 INFO L82 PathProgramCache]: Analyzing trace with hash 507164419, now seen corresponding path program 1 times [2020-10-29 05:48:07,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:48:07,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066623402] [2020-10-29 05:48:07,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:48:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:48:07,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:48:09,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:48:12,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:48:12,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1037 [2020-10-29 05:48:12,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:48:12,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5240 [2020-10-29 05:48:12,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:48:12,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:48:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:48:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:48:12,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1011 [2020-10-29 05:48:12,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:48:13,692 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:48:13,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:48:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:48:13,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:48:13,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:48:13,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:48:13,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:48:13,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:48:13,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:48:13,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:48:13,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:48:13,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:48:13,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:48:13,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:48:13,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:48:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:48:13,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:48:13,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:48:13,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:48:13,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:48:13,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:48:13,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:48:13,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:48:13,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:48:13,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:48:13,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:48:13,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:48:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:48:15,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066623402] [2020-10-29 05:48:15,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:48:15,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:48:15,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398913275] [2020-10-29 05:48:15,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:48:15,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:48:15,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:48:15,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:48:15,030 INFO L87 Difference]: Start difference. First operand 2374 states and 3972 transitions. Second operand 5 states. [2020-10-29 05:48:15,446 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:48:33,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:48:33,611 INFO L93 Difference]: Finished difference Result 6855 states and 11619 transitions. [2020-10-29 05:48:33,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:48:33,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1017 [2020-10-29 05:48:33,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:48:33,645 INFO L225 Difference]: With dead ends: 6855 [2020-10-29 05:48:33,646 INFO L226 Difference]: Without dead ends: 4487 [2020-10-29 05:48:33,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 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 05:48:33,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2020-10-29 05:48:33,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 4459. [2020-10-29 05:48:33,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4459 states. [2020-10-29 05:48:33,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4459 states to 4459 states and 6888 transitions. [2020-10-29 05:48:33,822 INFO L78 Accepts]: Start accepts. Automaton has 4459 states and 6888 transitions. Word has length 1017 [2020-10-29 05:48:33,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:48:33,824 INFO L481 AbstractCegarLoop]: Abstraction has 4459 states and 6888 transitions. [2020-10-29 05:48:33,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:48:33,824 INFO L276 IsEmpty]: Start isEmpty. Operand 4459 states and 6888 transitions. [2020-10-29 05:48:33,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1022 [2020-10-29 05:48:33,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:48:33,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:33,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:48:33,844 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:48:33,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:48:33,845 INFO L82 PathProgramCache]: Analyzing trace with hash 2063483595, now seen corresponding path program 1 times [2020-10-29 05:48:33,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:48:33,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141969228] [2020-10-29 05:48:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:48:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:48:34,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:48:34,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:48:39,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:48:39,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1041 [2020-10-29 05:48:39,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:48:39,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5166 [2020-10-29 05:48:39,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:48:39,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:48:39,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 05:48:39,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:48:39,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 919 [2020-10-29 05:48:39,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:48:43,721 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-29 05:48:44,013 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-29 05:48:44,266 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-29 05:48:44,537 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-29 05:48:44,769 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-29 05:48:44,990 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-29 05:48:45,241 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-29 05:48:45,435 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-29 05:48:45,630 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-29 05:48:45,840 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2020-10-29 05:48:46,035 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-10-29 05:48:46,259 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-10-29 05:48:46,605 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-10-29 05:48:46,880 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2020-10-29 05:48:47,193 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 50 [2020-10-29 05:48:47,481 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:48:47,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:48:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:48:47,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:48:47,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:48:47,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:48:47,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:48:47,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:48:47,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:48:47,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:48:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:48:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:48:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:48:47,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:48:47,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:48:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:48:47,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:48:47,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:48:47,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:48:47,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:48:47,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:48:47,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 05:48:47,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:48:47,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:48:47,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:48:47,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:48:47,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:48:47,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:49:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:49:04,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141969228] [2020-10-29 05:49:04,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:49:04,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 05:49:04,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088596009] [2020-10-29 05:49:04,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 05:49:04,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:49:04,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 05:49:04,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2020-10-29 05:49:04,617 INFO L87 Difference]: Start difference. First operand 4459 states and 6888 transitions. Second operand 22 states. [2020-10-29 05:49:05,082 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 05:49:07,531 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:49:56,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:49:56,132 INFO L93 Difference]: Finished difference Result 11144 states and 17736 transitions. [2020-10-29 05:49:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:49:56,133 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 1021 [2020-10-29 05:49:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:49:56,168 INFO L225 Difference]: With dead ends: 11144 [2020-10-29 05:49:56,168 INFO L226 Difference]: Without dead ends: 6691 [2020-10-29 05:49:56,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2020-10-29 05:49:56,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6691 states. [2020-10-29 05:49:56,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6691 to 6631. [2020-10-29 05:49:56,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6631 states. [2020-10-29 05:49:56,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6631 states to 6631 states and 9304 transitions. [2020-10-29 05:49:56,374 INFO L78 Accepts]: Start accepts. Automaton has 6631 states and 9304 transitions. Word has length 1021 [2020-10-29 05:49:56,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:49:56,374 INFO L481 AbstractCegarLoop]: Abstraction has 6631 states and 9304 transitions. [2020-10-29 05:49:56,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 05:49:56,375 INFO L276 IsEmpty]: Start isEmpty. Operand 6631 states and 9304 transitions. [2020-10-29 05:49:56,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2020-10-29 05:49:56,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:49:56,404 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:49:56,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:49:56,405 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:49:56,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:49:56,405 INFO L82 PathProgramCache]: Analyzing trace with hash -901338955, now seen corresponding path program 1 times [2020-10-29 05:49:56,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:49:56,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487012763] [2020-10-29 05:49:56,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:49:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:49:56,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:58,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:49:59,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:01,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:01,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1092 [2020-10-29 05:50:01,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:50:01,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5259 [2020-10-29 05:50:01,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:01,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:01,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:50:01,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 05:50:01,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1011 [2020-10-29 05:50:01,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:50:02,811 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:50:02,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:50:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:02,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:02,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:02,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:50:02,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:50:02,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:50:02,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:02,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:02,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:50:02,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:50:02,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:50:02,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:50:02,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:50:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:02,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:02,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:02,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 05:50:02,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:50:02,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:50:02,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:02,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:02,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:50:02,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:50:02,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:50:02,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:50:02,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 05:50:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:02,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:03,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:03,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:50:03,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:50:03,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:50:03,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:03,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:03,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:50:03,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:50:03,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:50:03,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:50:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 05:50:04,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487012763] [2020-10-29 05:50:04,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:50:04,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:50:04,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319134416] [2020-10-29 05:50:04,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:50:04,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:50:04,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:50:04,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:50:04,160 INFO L87 Difference]: Start difference. First operand 6631 states and 9304 transitions. Second operand 6 states. [2020-10-29 05:50:04,779 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:50:22,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:50:22,365 INFO L93 Difference]: Finished difference Result 15574 states and 23546 transitions. [2020-10-29 05:50:22,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:50:22,372 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1070 [2020-10-29 05:50:22,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:50:22,433 INFO L225 Difference]: With dead ends: 15574 [2020-10-29 05:50:22,433 INFO L226 Difference]: Without dead ends: 11010 [2020-10-29 05:50:22,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:50:22,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11010 states. [2020-10-29 05:50:22,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11010 to 10938. [2020-10-29 05:50:22,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10938 states. [2020-10-29 05:50:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10938 states to 10938 states and 15511 transitions. [2020-10-29 05:50:22,755 INFO L78 Accepts]: Start accepts. Automaton has 10938 states and 15511 transitions. Word has length 1070 [2020-10-29 05:50:22,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:50:22,757 INFO L481 AbstractCegarLoop]: Abstraction has 10938 states and 15511 transitions. [2020-10-29 05:50:22,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:50:22,757 INFO L276 IsEmpty]: Start isEmpty. Operand 10938 states and 15511 transitions. [2020-10-29 05:50:22,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1090 [2020-10-29 05:50:22,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:50:22,800 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:50:22,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:50:22,800 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:50:22,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:50:22,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1786967645, now seen corresponding path program 1 times [2020-10-29 05:50:22,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:50:22,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342905416] [2020-10-29 05:50:22,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:50:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:22,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:23,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:27,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:27,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1113 [2020-10-29 05:50:27,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:50:27,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 05:50:27,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:27,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:27,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:50:27,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:50:27,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 05:50:27,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:50:28,390 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:50:28,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:50:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:28,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:28,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:28,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:50:28,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:50:28,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:50:28,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:28,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:28,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:50:28,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:50:28,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:50:28,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:50:28,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:50:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:28,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:28,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:28,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 05:50:28,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:50:28,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 05:50:28,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:28,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:50:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:50:28,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 05:50:28,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:50:28,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 05:50:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:28,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:28,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:28,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:50:28,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:50:28,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:50:28,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:28,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:28,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:50:28,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 05:50:28,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:50:28,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:50:28,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 05:50:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:28,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:28,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:28,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:50:28,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:50:28,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:50:28,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:28,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:28,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:50:28,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 05:50:28,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:50:28,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:50:29,559 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 75 proven. 26 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-29 05:50:29,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342905416] [2020-10-29 05:50:29,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:50:29,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:50:29,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661898147] [2020-10-29 05:50:29,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:50:29,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:50:29,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:50:29,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:50:29,562 INFO L87 Difference]: Start difference. First operand 10938 states and 15511 transitions. Second operand 7 states. [2020-10-29 05:50:29,844 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:50:30,807 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 05:50:52,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:50:52,128 INFO L93 Difference]: Finished difference Result 27595 states and 40423 transitions. [2020-10-29 05:50:52,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:50:52,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1089 [2020-10-29 05:50:52,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:50:52,182 INFO L225 Difference]: With dead ends: 27595 [2020-10-29 05:50:52,182 INFO L226 Difference]: Without dead ends: 16663 [2020-10-29 05:50:52,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 05:50:52,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16663 states. [2020-10-29 05:50:52,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16663 to 16444. [2020-10-29 05:50:52,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16444 states. [2020-10-29 05:50:52,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16444 states to 16444 states and 22980 transitions. [2020-10-29 05:50:52,599 INFO L78 Accepts]: Start accepts. Automaton has 16444 states and 22980 transitions. Word has length 1089 [2020-10-29 05:50:52,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:50:52,600 INFO L481 AbstractCegarLoop]: Abstraction has 16444 states and 22980 transitions. [2020-10-29 05:50:52,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:50:52,600 INFO L276 IsEmpty]: Start isEmpty. Operand 16444 states and 22980 transitions. [2020-10-29 05:50:52,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1092 [2020-10-29 05:50:52,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:50:52,652 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:50:52,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:50:52,653 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:50:52,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:50:52,653 INFO L82 PathProgramCache]: Analyzing trace with hash -530205790, now seen corresponding path program 1 times [2020-10-29 05:50:52,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:50:52,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164883527] [2020-10-29 05:50:52,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:50:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:52,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:53,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:53,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:57,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:57,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1113 [2020-10-29 05:50:57,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:50:57,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-29 05:50:57,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:57,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:57,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:50:57,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 05:50:57,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1012 [2020-10-29 05:50:57,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:50:58,738 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:50:58,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:50:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:58,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:58,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:58,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:50:58,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:50:58,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:50:58,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:58,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:58,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:50:58,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:50:58,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:50:58,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:50:58,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:50:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:58,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:58,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:58,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 05:50:58,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:50:58,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:50:58,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:58,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:50:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:50:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:50:58,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:50:58,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 05:50:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:50:58,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:50:58,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:50:58,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:50:58,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:50:58,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:50:58,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:50:58,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:50:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:50:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:50:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:50:58,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:51:00,452 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 05:51:00,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164883527] [2020-10-29 05:51:00,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:51:00,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:51:00,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197522343] [2020-10-29 05:51:00,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:51:00,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:51:00,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:51:00,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:51:00,455 INFO L87 Difference]: Start difference. First operand 16444 states and 22980 transitions. Second operand 5 states. [2020-10-29 05:51:00,879 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 159