/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem18_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:47:37,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:47:37,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:47:37,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:47:37,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:47:37,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:47:37,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:47:37,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:47:37,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:47:37,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:47:37,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:47:37,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:47:37,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:47:37,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:47:37,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:47:37,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:47:37,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:47:37,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:47:37,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:47:37,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:47:37,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:47:37,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:47:37,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:47:37,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:47:37,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:47:37,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:47:37,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:47:37,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:47:37,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:47:37,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:47:37,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:47:37,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:47:37,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:47:37,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:47:37,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:47:37,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:47:37,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:47:37,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:47:37,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:47:37,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:47:37,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:47:37,167 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 [2020-10-28 13:47:37,223 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:47:37,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:47:37,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:47:37,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:47:37,229 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:47:37,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:47:37,229 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:47:37,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:47:37,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:47:37,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:47:37,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:47:37,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:47:37,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:47:37,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:47:37,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:47:37,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:47:37,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:47:37,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:47:37,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:47:37,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:47:37,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:47:37,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:47:37,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:47:37,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:47:37,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:47:37,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:47:37,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:47:37,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:47:37,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:47:37,235 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:47:37,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:47:37,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:47:37,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:47:37,716 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:47:37,717 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:47:37,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label06.c [2020-10-28 13:47:37,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c03f8091/a8b29f663ad347beb45269ba0955053e/FLAG52e4c2768 [2020-10-28 13:47:38,941 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:47:38,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label06.c [2020-10-28 13:47:38,974 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c03f8091/a8b29f663ad347beb45269ba0955053e/FLAG52e4c2768 [2020-10-28 13:47:39,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c03f8091/a8b29f663ad347beb45269ba0955053e [2020-10-28 13:47:39,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:47:39,435 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:47:39,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:47:39,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:47:39,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:47:39,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:47:39" (1/1) ... [2020-10-28 13:47:39,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c57453f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:47:39, skipping insertion in model container [2020-10-28 13:47:39,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:47:39" (1/1) ... [2020-10-28 13:47:39,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:47:39,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:47:40,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:47:40,881 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:47:41,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:47:41,392 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:47:41,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:47:41 WrapperNode [2020-10-28 13:47:41,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:47:41,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:47:41,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:47:41,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:47:41,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:47:41" (1/1) ... [2020-10-28 13:47:41,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:47:41" (1/1) ... [2020-10-28 13:47:41,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:47:41" (1/1) ... [2020-10-28 13:47:41,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:47:41" (1/1) ... [2020-10-28 13:47:41,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:47:41" (1/1) ... [2020-10-28 13:47:41,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:47:41" (1/1) ... [2020-10-28 13:47:41,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:47:41" (1/1) ... [2020-10-28 13:47:41,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:47:41,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:47:41,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:47:41,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:47:41,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:47:41" (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 [2020-10-28 13:47:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:47:41,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:47:41,815 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:47:41,815 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:47:41,816 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:47:41,816 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:47:41,816 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:47:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:47:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:47:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:47:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:47:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:47:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:47:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:47:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:47:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:47:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:47:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:47:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:47:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:47:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:47:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:47:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:47:45,531 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:47:45,531 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:47:45,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:47:45 BoogieIcfgContainer [2020-10-28 13:47:45,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:47:45,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:47:45,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:47:45,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:47:45,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:47:39" (1/3) ... [2020-10-28 13:47:45,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e5887d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:47:45, skipping insertion in model container [2020-10-28 13:47:45,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:47:41" (2/3) ... [2020-10-28 13:47:45,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e5887d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:47:45, skipping insertion in model container [2020-10-28 13:47:45,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:47:45" (3/3) ... [2020-10-28 13:47:45,548 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label06.c [2020-10-28 13:47:45,561 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:47:45,566 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:47:45,579 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:47:45,614 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:47:45,614 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:47:45,614 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:47:45,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:47:45,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:47:45,615 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:47:45,615 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:47:45,615 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:47:45,652 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:47:45,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 13:47:45,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:47:45,661 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] [2020-10-28 13:47:45,661 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:47:45,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:47:45,669 INFO L82 PathProgramCache]: Analyzing trace with hash -2144460280, now seen corresponding path program 1 times [2020-10-28 13:47:45,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:47:45,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482254218] [2020-10-28 13:47:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:47:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:45,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:46,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:46,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 13:47:46,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:46,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-28 13:47:46,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:46,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:46,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:47:46,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:47:46,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 13:47:46,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:47:46,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:47:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:46,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:46,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:46,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:47:46,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:46,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:47:46,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:46,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:47:46,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:47:46,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:47:46,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:47:46,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482254218] [2020-10-28 13:47:46,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:47:46,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:47:46,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097743011] [2020-10-28 13:47:46,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:47:46,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:47:46,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:47:46,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:47:46,766 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-28 13:47:55,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:47:55,347 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-28 13:47:55,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:47:55,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-28 13:47:55,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:47:55,391 INFO L225 Difference]: With dead ends: 2275 [2020-10-28 13:47:55,391 INFO L226 Difference]: Without dead ends: 1433 [2020-10-28 13:47:55,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:47:55,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-28 13:47:55,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-28 13:47:55,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-28 13:47:55,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2230 transitions. [2020-10-28 13:47:55,554 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2230 transitions. Word has length 32 [2020-10-28 13:47:55,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:47:55,554 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2230 transitions. [2020-10-28 13:47:55,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:47:55,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2230 transitions. [2020-10-28 13:47:55,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 13:47:55,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:47:55,560 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:47:55,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:47:55,561 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:47:55,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:47:55,561 INFO L82 PathProgramCache]: Analyzing trace with hash -554824976, now seen corresponding path program 1 times [2020-10-28 13:47:55,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:47:55,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930024828] [2020-10-28 13:47:55,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:47:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:55,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:56,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:56,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:56,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 13:47:56,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:47:56,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1104 [2020-10-28 13:47:56,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:56,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:56,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:47:56,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:47:56,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:47:56,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:47:56,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:47:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:56,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:56,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:56,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:47:56,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:56,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:47:56,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:56,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:56,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:47:56,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:47:56,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 13:47:56,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:47:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:56,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:57,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:57,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:47:57,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:57,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 13:47:57,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:57,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:57,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:47:57,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:47:57,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:47:57,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:47:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:47:57,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930024828] [2020-10-28 13:47:57,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:47:57,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:47:57,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914446877] [2020-10-28 13:47:57,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:47:57,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:47:57,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:47:57,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:47:57,186 INFO L87 Difference]: Start difference. First operand 1426 states and 2230 transitions. Second operand 7 states. [2020-10-28 13:48:07,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:48:07,129 INFO L93 Difference]: Finished difference Result 4354 states and 6840 transitions. [2020-10-28 13:48:07,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:48:07,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 102 [2020-10-28 13:48:07,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:48:07,147 INFO L225 Difference]: With dead ends: 4354 [2020-10-28 13:48:07,148 INFO L226 Difference]: Without dead ends: 2934 [2020-10-28 13:48:07,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:48:07,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-10-28 13:48:07,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 2879. [2020-10-28 13:48:07,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2879 states. [2020-10-28 13:48:07,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 3877 transitions. [2020-10-28 13:48:07,281 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 3877 transitions. Word has length 102 [2020-10-28 13:48:07,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:48:07,282 INFO L481 AbstractCegarLoop]: Abstraction has 2879 states and 3877 transitions. [2020-10-28 13:48:07,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:48:07,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 3877 transitions. [2020-10-28 13:48:07,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 13:48:07,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:48:07,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:48:07,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:48:07,295 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:48:07,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:48:07,296 INFO L82 PathProgramCache]: Analyzing trace with hash -854275512, now seen corresponding path program 1 times [2020-10-28 13:48:07,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:48:07,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000412820] [2020-10-28 13:48:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:48:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:07,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:07,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:08,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:08,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 13:48:08,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:48:08,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 882 [2020-10-28 13:48:08,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:08,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:48:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:48:08,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:48:08,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:48:08,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:48:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:08,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:08,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:08,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:48:08,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:08,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:48:08,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:08,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:08,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:48:08,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:48:08,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:48:08,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:08,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:48:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:08,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:08,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:08,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:48:08,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:08,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 13:48:08,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:08,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:08,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:48:08,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:48:08,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:48:08,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:48:08,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000412820] [2020-10-28 13:48:08,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:48:08,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:48:08,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520479669] [2020-10-28 13:48:08,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:48:08,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:48:08,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:48:08,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:48:08,750 INFO L87 Difference]: Start difference. First operand 2879 states and 3877 transitions. Second operand 7 states. [2020-10-28 13:48:17,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:48:17,966 INFO L93 Difference]: Finished difference Result 7307 states and 9575 transitions. [2020-10-28 13:48:17,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:48:17,967 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-28 13:48:17,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:48:17,993 INFO L225 Difference]: With dead ends: 7307 [2020-10-28 13:48:17,993 INFO L226 Difference]: Without dead ends: 4434 [2020-10-28 13:48:17,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:48:18,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4434 states. [2020-10-28 13:48:18,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4434 to 4333. [2020-10-28 13:48:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4333 states. [2020-10-28 13:48:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4333 states to 4333 states and 5420 transitions. [2020-10-28 13:48:18,132 INFO L78 Accepts]: Start accepts. Automaton has 4333 states and 5420 transitions. Word has length 122 [2020-10-28 13:48:18,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:48:18,133 INFO L481 AbstractCegarLoop]: Abstraction has 4333 states and 5420 transitions. [2020-10-28 13:48:18,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:48:18,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4333 states and 5420 transitions. [2020-10-28 13:48:18,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-28 13:48:18,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:48:18,135 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:48:18,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:48:18,135 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:48:18,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:48:18,136 INFO L82 PathProgramCache]: Analyzing trace with hash 825550318, now seen corresponding path program 1 times [2020-10-28 13:48:18,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:48:18,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867208265] [2020-10-28 13:48:18,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:48:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:18,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:18,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:19,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:19,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 13:48:19,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:48:19,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1226 [2020-10-28 13:48:19,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:19,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:19,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:48:19,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:48:19,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 13:48:19,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:19,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:48:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:19,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:19,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:19,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:48:19,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:19,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:48:19,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:19,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:48:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:48:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:48:19,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:19,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:48:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:19,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:19,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:19,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:48:19,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:19,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 13:48:19,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:19,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:19,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:48:19,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:48:19,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:48:19,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:48:20,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867208265] [2020-10-28 13:48:20,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:48:20,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:48:20,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792400980] [2020-10-28 13:48:20,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:48:20,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:48:20,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:48:20,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:48:20,041 INFO L87 Difference]: Start difference. First operand 4333 states and 5420 transitions. Second operand 7 states. [2020-10-28 13:48:31,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:48:31,638 INFO L93 Difference]: Finished difference Result 10900 states and 14183 transitions. [2020-10-28 13:48:31,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:48:31,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-10-28 13:48:31,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:48:31,683 INFO L225 Difference]: With dead ends: 10900 [2020-10-28 13:48:31,683 INFO L226 Difference]: Without dead ends: 7993 [2020-10-28 13:48:31,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:48:31,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7993 states. [2020-10-28 13:48:31,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7993 to 7250. [2020-10-28 13:48:31,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7250 states. [2020-10-28 13:48:31,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7250 states to 7250 states and 8619 transitions. [2020-10-28 13:48:31,885 INFO L78 Accepts]: Start accepts. Automaton has 7250 states and 8619 transitions. Word has length 129 [2020-10-28 13:48:31,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:48:31,886 INFO L481 AbstractCegarLoop]: Abstraction has 7250 states and 8619 transitions. [2020-10-28 13:48:31,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:48:31,886 INFO L276 IsEmpty]: Start isEmpty. Operand 7250 states and 8619 transitions. [2020-10-28 13:48:31,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-28 13:48:31,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:48:31,891 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:48:31,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:48:31,892 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:48:31,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:48:31,892 INFO L82 PathProgramCache]: Analyzing trace with hash -736146834, now seen corresponding path program 1 times [2020-10-28 13:48:31,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:48:31,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902743320] [2020-10-28 13:48:31,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:48:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:32,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:32,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:32,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:34,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:34,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-28 13:48:34,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:48:34,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2233 [2020-10-28 13:48:34,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:34,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:34,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:48:34,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:48:34,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 13:48:34,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:48:34,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:48:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:34,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:34,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:34,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:48:34,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:34,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:48:34,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:34,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:34,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:48:34,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:48:34,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:48:34,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:48:34,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:48:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:34,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:34,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:48:34,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:34,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 13:48:34,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:34,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:34,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:48:34,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:48:34,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:48:34,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:34,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 13:48:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:34,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:34,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:34,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:48:34,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:34,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-28 13:48:34,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:34,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:34,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:48:34,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:48:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:48:34,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:48:35,113 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:48:35,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902743320] [2020-10-28 13:48:35,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:48:35,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:48:35,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269328827] [2020-10-28 13:48:35,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:48:35,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:48:35,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:48:35,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:48:35,117 INFO L87 Difference]: Start difference. First operand 7250 states and 8619 transitions. Second operand 7 states. [2020-10-28 13:48:50,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:48:50,009 INFO L93 Difference]: Finished difference Result 17548 states and 21454 transitions. [2020-10-28 13:48:50,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:48:50,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 315 [2020-10-28 13:48:50,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:48:50,065 INFO L225 Difference]: With dead ends: 17548 [2020-10-28 13:48:50,065 INFO L226 Difference]: Without dead ends: 9584 [2020-10-28 13:48:50,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:48:50,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9584 states. [2020-10-28 13:48:50,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9584 to 8077. [2020-10-28 13:48:50,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8077 states. [2020-10-28 13:48:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8077 states to 8077 states and 9600 transitions. [2020-10-28 13:48:50,318 INFO L78 Accepts]: Start accepts. Automaton has 8077 states and 9600 transitions. Word has length 315 [2020-10-28 13:48:50,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:48:50,319 INFO L481 AbstractCegarLoop]: Abstraction has 8077 states and 9600 transitions. [2020-10-28 13:48:50,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:48:50,319 INFO L276 IsEmpty]: Start isEmpty. Operand 8077 states and 9600 transitions. [2020-10-28 13:48:50,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-28 13:48:50,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:48:50,330 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:48:50,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:48:50,331 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:48:50,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:48:50,331 INFO L82 PathProgramCache]: Analyzing trace with hash -2143068424, now seen corresponding path program 1 times [2020-10-28 13:48:50,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:48:50,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621812939] [2020-10-28 13:48:50,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:48:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:50,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:50,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:50,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:55,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:55,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-28 13:48:55,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:48:55,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 13:48:55,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:55,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:55,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:48:55,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:48:55,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:48:55,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:55,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:48:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:55,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:55,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:55,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:48:55,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:55,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:48:55,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:55,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:48:55,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:48:55,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:48:55,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:48:55,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:48:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:55,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:56,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:56,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:48:56,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:56,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-28 13:48:56,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:56,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:56,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:48:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:48:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:48:56,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:48:56,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:48:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:56,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:56,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:56,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:48:56,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:56,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:48:56,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:56,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:56,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:48:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:48:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:48:56,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:56,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:48:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:56,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:56,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:56,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:48:56,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:56,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 13:48:56,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:56,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:56,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:48:56,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:48:56,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:48:56,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:56,809 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:48:56,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621812939] [2020-10-28 13:48:56,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:48:56,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:48:56,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722592870] [2020-10-28 13:48:56,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:48:56,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:48:56,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:48:56,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:48:56,813 INFO L87 Difference]: Start difference. First operand 8077 states and 9600 transitions. Second operand 7 states. [2020-10-28 13:49:08,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:49:08,615 INFO L93 Difference]: Finished difference Result 20140 states and 24891 transitions. [2020-10-28 13:49:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:49:08,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 429 [2020-10-28 13:49:08,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:49:08,658 INFO L225 Difference]: With dead ends: 20140 [2020-10-28 13:49:08,658 INFO L226 Difference]: Without dead ends: 12771 [2020-10-28 13:49:08,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:49:08,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12771 states. [2020-10-28 13:49:08,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12771 to 11852. [2020-10-28 13:49:08,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11852 states. [2020-10-28 13:49:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11852 states to 11852 states and 14386 transitions. [2020-10-28 13:49:08,966 INFO L78 Accepts]: Start accepts. Automaton has 11852 states and 14386 transitions. Word has length 429 [2020-10-28 13:49:08,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:49:08,967 INFO L481 AbstractCegarLoop]: Abstraction has 11852 states and 14386 transitions. [2020-10-28 13:49:08,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:49:08,968 INFO L276 IsEmpty]: Start isEmpty. Operand 11852 states and 14386 transitions. [2020-10-28 13:49:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-28 13:49:08,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:49:08,978 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:49:08,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:49:08,978 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:49:08,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:49:08,979 INFO L82 PathProgramCache]: Analyzing trace with hash -955864258, now seen corresponding path program 1 times [2020-10-28 13:49:08,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:49:08,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397262973] [2020-10-28 13:49:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:49:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:09,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:09,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:09,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:14,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:14,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 452 [2020-10-28 13:49:14,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:49:14,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 13:49:14,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:14,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:14,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:49:14,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:49:14,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 13:49:14,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:14,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:49:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:14,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:14,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:49:14,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:14,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:49:14,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:14,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:14,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:49:14,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:14,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:49:14,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:14,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:49:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:14,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:14,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:14,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:49:14,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:14,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-28 13:49:14,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:14,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:14,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:14,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:14,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:49:14,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:14,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:49:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:14,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:14,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:14,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:49:14,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:14,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:49:14,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:14,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:14,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:14,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:49:14,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:14,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:49:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:14,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:15,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:15,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:49:15,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:15,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 13:49:15,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:15,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:49:15,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:49:15,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:49:15,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:15,251 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:49:15,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397262973] [2020-10-28 13:49:15,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:49:15,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:49:15,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034588967] [2020-10-28 13:49:15,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:49:15,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:49:15,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:49:15,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:49:15,253 INFO L87 Difference]: Start difference. First operand 11852 states and 14386 transitions. Second operand 7 states. [2020-10-28 13:49:28,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:49:28,530 INFO L93 Difference]: Finished difference Result 33531 states and 43350 transitions. [2020-10-28 13:49:28,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:49:28,532 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 436 [2020-10-28 13:49:28,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:49:28,627 INFO L225 Difference]: With dead ends: 33531 [2020-10-28 13:49:28,627 INFO L226 Difference]: Without dead ends: 22387 [2020-10-28 13:49:28,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:49:28,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22387 states. [2020-10-28 13:49:29,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22387 to 21422. [2020-10-28 13:49:29,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21422 states. [2020-10-28 13:49:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21422 states to 21422 states and 25641 transitions. [2020-10-28 13:49:29,193 INFO L78 Accepts]: Start accepts. Automaton has 21422 states and 25641 transitions. Word has length 436 [2020-10-28 13:49:29,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:49:29,196 INFO L481 AbstractCegarLoop]: Abstraction has 21422 states and 25641 transitions. [2020-10-28 13:49:29,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:49:29,196 INFO L276 IsEmpty]: Start isEmpty. Operand 21422 states and 25641 transitions. [2020-10-28 13:49:29,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-28 13:49:29,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:49:29,206 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:49:29,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:49:29,207 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:49:29,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:49:29,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1799517763, now seen corresponding path program 1 times [2020-10-28 13:49:29,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:49:29,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455466068] [2020-10-28 13:49:29,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:49:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:29,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:29,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:29,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:34,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:34,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-28 13:49:34,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:49:34,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-28 13:49:34,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:34,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:49:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-28 13:49:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 13:49:34,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:34,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:49:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:34,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:34,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:34,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:49:34,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:34,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:49:34,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:34,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:49:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:49:34,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:49:34,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:49:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:34,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:34,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:34,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 13:49:34,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:34,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-28 13:49:34,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:34,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:34,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:34,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:34,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-28 13:49:34,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:34,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:49:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:34,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:34,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:34,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 13:49:34,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:34,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:49:34,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:34,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:34,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:34,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:34,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 13:49:34,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:35,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-28 13:49:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:35,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:35,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:35,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:49:35,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:35,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:49:35,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:35,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:35,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:49:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:49:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:49:35,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:49:35,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455466068] [2020-10-28 13:49:35,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:49:35,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:49:35,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37566931] [2020-10-28 13:49:35,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:49:35,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:49:35,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:49:35,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:49:35,335 INFO L87 Difference]: Start difference. First operand 21422 states and 25641 transitions. Second operand 7 states. [2020-10-28 13:49:51,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:49:51,351 INFO L93 Difference]: Finished difference Result 50999 states and 61271 transitions. [2020-10-28 13:49:51,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:49:51,353 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 443 [2020-10-28 13:49:51,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:49:51,454 INFO L225 Difference]: With dead ends: 50999 [2020-10-28 13:49:51,455 INFO L226 Difference]: Without dead ends: 30285 [2020-10-28 13:49:51,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:49:51,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30285 states. [2020-10-28 13:49:52,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30285 to 28661. [2020-10-28 13:49:52,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28661 states. [2020-10-28 13:49:52,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28661 states to 28661 states and 33773 transitions. [2020-10-28 13:49:52,075 INFO L78 Accepts]: Start accepts. Automaton has 28661 states and 33773 transitions. Word has length 443 [2020-10-28 13:49:52,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:49:52,076 INFO L481 AbstractCegarLoop]: Abstraction has 28661 states and 33773 transitions. [2020-10-28 13:49:52,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:49:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 28661 states and 33773 transitions. [2020-10-28 13:49:52,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-28 13:49:52,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:49:52,087 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:49:52,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:49:52,087 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:49:52,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:49:52,088 INFO L82 PathProgramCache]: Analyzing trace with hash 323529113, now seen corresponding path program 1 times [2020-10-28 13:49:52,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:49:52,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430572289] [2020-10-28 13:49:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:49:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:52,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:52,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:52,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:57,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:57,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 477 [2020-10-28 13:49:57,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:49:57,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 13:49:57,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:57,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:57,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:49:57,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-28 13:49:57,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 13:49:57,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:57,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:49:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:57,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:57,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:57,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:49:57,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:57,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:49:57,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:57,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:49:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:49:57,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:57,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:49:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:57,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:57,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:57,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 13:49:57,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:57,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 13:49:57,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:57,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:57,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:57,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:57,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-28 13:49:57,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:57,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:49:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:57,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:57,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:57,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 13:49:57,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:57,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:49:57,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:57,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:57,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:57,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:57,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 13:49:57,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:57,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-28 13:49:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:57,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:57,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:57,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:49:57,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:57,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 13:49:57,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:57,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:57,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:49:57,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:49:57,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 13:49:57,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:49:57,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430572289] [2020-10-28 13:49:57,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:49:57,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:49:57,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016741609] [2020-10-28 13:49:57,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:49:57,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:49:57,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:49:57,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:49:57,987 INFO L87 Difference]: Start difference. First operand 28661 states and 33773 transitions. Second operand 7 states. [2020-10-28 13:50:11,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:50:11,769 INFO L93 Difference]: Finished difference Result 68957 states and 83671 transitions. [2020-10-28 13:50:11,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:50:11,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 461 [2020-10-28 13:50:11,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:50:11,870 INFO L225 Difference]: With dead ends: 68957 [2020-10-28 13:50:11,870 INFO L226 Difference]: Without dead ends: 39955 [2020-10-28 13:50:11,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:50:11,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39955 states. [2020-10-28 13:50:12,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39955 to 39856. [2020-10-28 13:50:12,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39856 states. [2020-10-28 13:50:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39856 states to 39856 states and 44472 transitions. [2020-10-28 13:50:12,648 INFO L78 Accepts]: Start accepts. Automaton has 39856 states and 44472 transitions. Word has length 461 [2020-10-28 13:50:12,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:50:12,649 INFO L481 AbstractCegarLoop]: Abstraction has 39856 states and 44472 transitions. [2020-10-28 13:50:12,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:50:12,649 INFO L276 IsEmpty]: Start isEmpty. Operand 39856 states and 44472 transitions. [2020-10-28 13:50:12,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1100 [2020-10-28 13:50:12,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:50:12,704 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:50:12,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:50:12,704 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:50:12,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:50:12,705 INFO L82 PathProgramCache]: Analyzing trace with hash 510604896, now seen corresponding path program 1 times [2020-10-28 13:50:12,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:50:12,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648406379] [2020-10-28 13:50:12,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:50:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:13,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:13,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:16,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:16,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1123 [2020-10-28 13:50:16,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:50:16,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3639 [2020-10-28 13:50:16,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:16,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:16,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:50:16,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-28 13:50:16,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 13:50:16,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:17,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:50:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:17,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:17,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:17,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:50:17,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:17,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:50:17,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:17,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:17,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:17,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:17,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:17,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:17,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:50:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:17,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:17,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:17,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:50:17,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:17,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:50:17,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:17,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:17,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:17,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:17,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:17,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:17,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:50:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:17,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:17,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:17,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:50:17,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:50:17,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:17,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:17,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:17,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:17,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:17,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:17,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:50:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:17,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:17,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:17,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:50:17,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:17,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:50:17,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:17,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:17,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:17,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:17,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:17,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:17,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:50:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:17,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:17,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:17,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:50:17,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:17,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:50:17,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:17,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:17,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:17,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:17,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:17,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:17,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:50:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:17,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:17,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:17,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:50:17,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:17,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:50:17,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:17,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:17,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:17,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:17,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:17,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:17,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:50:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:17,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:17,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:17,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:50:17,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:17,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:50:17,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:17,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:50:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 13:50:17,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:18,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-28 13:50:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:18,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:18,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:18,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:50:18,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:18,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:50:18,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:18,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:18,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:50:18,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:50:18,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:50:18,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 367 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-28 13:50:18,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648406379] [2020-10-28 13:50:18,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:50:18,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:50:18,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558335345] [2020-10-28 13:50:18,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:50:18,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:50:18,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:50:18,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:50:18,721 INFO L87 Difference]: Start difference. First operand 39856 states and 44472 transitions. Second operand 7 states. [2020-10-28 13:50:29,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:50:29,426 INFO L93 Difference]: Finished difference Result 89758 states and 101586 transitions. [2020-10-28 13:50:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:50:29,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1099 [2020-10-28 13:50:29,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:50:29,557 INFO L225 Difference]: With dead ends: 89758 [2020-10-28 13:50:29,557 INFO L226 Difference]: Without dead ends: 50608 [2020-10-28 13:50:29,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:50:29,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50608 states. [2020-10-28 13:50:30,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50608 to 50576. [2020-10-28 13:50:30,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50576 states. [2020-10-28 13:50:30,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50576 states to 50576 states and 56376 transitions. [2020-10-28 13:50:30,668 INFO L78 Accepts]: Start accepts. Automaton has 50576 states and 56376 transitions. Word has length 1099 [2020-10-28 13:50:30,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:50:30,670 INFO L481 AbstractCegarLoop]: Abstraction has 50576 states and 56376 transitions. [2020-10-28 13:50:30,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:50:30,670 INFO L276 IsEmpty]: Start isEmpty. Operand 50576 states and 56376 transitions. [2020-10-28 13:50:30,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1121 [2020-10-28 13:50:30,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:50:30,686 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:50:30,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:50:30,687 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:50:30,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:50:30,688 INFO L82 PathProgramCache]: Analyzing trace with hash -188760326, now seen corresponding path program 1 times [2020-10-28 13:50:30,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:50:30,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520465165] [2020-10-28 13:50:30,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:50:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:31,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:32,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:32,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1144 [2020-10-28 13:50:32,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:32,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1249 [2020-10-28 13:50:32,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:32,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:32,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:50:32,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-28 13:50:32,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 13:50:32,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:32,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:50:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:32,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:32,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:32,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:50:32,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:32,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:50:32,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:32,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:32,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:32,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:50:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:32,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:32,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:32,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:50:32,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:32,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 13:50:32,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:32,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:32,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:33,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:50:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:33,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:33,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:33,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:50:33,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:50:33,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:33,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:33,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:33,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:50:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:33,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:33,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:33,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:50:33,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:33,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:50:33,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:33,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:33,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:33,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:33,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:50:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:33,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:33,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:33,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:50:33,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:33,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:50:33,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:33,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:33,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:33,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:33,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:33,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:33,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:50:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:33,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:33,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:33,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:50:33,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:33,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:50:33,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:33,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:33,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:33,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:33,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:33,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:33,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:50:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:33,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:33,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:33,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:50:33,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:33,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:50:33,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:33,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:33,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:33,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:33,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:33,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:33,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-28 13:50:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:33,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:33,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:33,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:50:33,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:33,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:50:33,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:33,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:50:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:50:33,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1022 backedges. 101 proven. 4 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2020-10-28 13:50:34,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520465165] [2020-10-28 13:50:34,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:50:34,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:50:34,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089125390] [2020-10-28 13:50:34,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:50:34,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:50:34,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:50:34,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:50:34,321 INFO L87 Difference]: Start difference. First operand 50576 states and 56376 transitions. Second operand 5 states. [2020-10-28 13:50:43,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:50:43,394 INFO L93 Difference]: Finished difference Result 101180 states and 112782 transitions. [2020-10-28 13:50:43,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:50:43,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1120 [2020-10-28 13:50:43,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:50:43,648 INFO L225 Difference]: With dead ends: 101180 [2020-10-28 13:50:43,649 INFO L226 Difference]: Without dead ends: 50608 [2020-10-28 13:50:43,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:50:43,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50608 states. [2020-10-28 13:50:44,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50608 to 49168. [2020-10-28 13:50:44,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49168 states. [2020-10-28 13:50:44,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49168 states to 49168 states and 53472 transitions. [2020-10-28 13:50:44,712 INFO L78 Accepts]: Start accepts. Automaton has 49168 states and 53472 transitions. Word has length 1120 [2020-10-28 13:50:44,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:50:44,714 INFO L481 AbstractCegarLoop]: Abstraction has 49168 states and 53472 transitions. [2020-10-28 13:50:44,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:50:44,714 INFO L276 IsEmpty]: Start isEmpty. Operand 49168 states and 53472 transitions. [2020-10-28 13:50:44,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1132 [2020-10-28 13:50:44,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:50:44,735 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:50:44,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:50:44,735 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:50:44,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:50:44,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1811832288, now seen corresponding path program 1 times [2020-10-28 13:50:44,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:50:44,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333098474] [2020-10-28 13:50:44,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:50:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:45,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:49,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:49,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1155 [2020-10-28 13:50:49,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:50:49,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4115 [2020-10-28 13:50:49,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:49,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:49,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:50:49,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-28 13:50:49,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 13:50:49,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:49,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:50:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:49,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:49,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:50:49,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:50:49,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:49,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:49,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:49,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:50:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:49,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:49,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:49,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:50:49,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:49,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:50:49,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:49,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:49,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:49,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:49,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:49,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:49,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:50:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:49,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:49,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:49,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:50:49,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:49,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:50:49,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:49,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:49,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:49,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:49,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:49,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:49,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:50:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:49,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:49,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:49,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:50:49,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:49,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:50:49,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:49,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:49,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:49,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:50:50,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:50:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:50,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:50,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:50,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:50:50,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:50,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:50:50,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:50,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:50,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:50,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:50,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:50:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:50,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:50,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:50,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:50:50,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:50,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:50:50,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:50,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:50,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:50,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:50:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:50,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:50,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:50,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:50:50,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:50,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:50:50,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:50,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:50,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:50:50,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:50,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 13:50:50,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:50,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-28 13:50:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:50,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:50,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:50,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:50:50,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:50,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 13:50:50,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:50,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:50,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:50:50,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:50:50,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:50:50,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 463 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-28 13:50:51,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333098474] [2020-10-28 13:50:51,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:50:51,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:50:51,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481300452] [2020-10-28 13:50:51,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:50:51,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:50:51,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:50:51,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:50:51,495 INFO L87 Difference]: Start difference. First operand 49168 states and 53472 transitions. Second operand 7 states. [2020-10-28 13:51:02,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:51:02,427 INFO L93 Difference]: Finished difference Result 101910 states and 111105 transitions. [2020-10-28 13:51:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:51:02,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1131 [2020-10-28 13:51:02,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:51:02,539 INFO L225 Difference]: With dead ends: 101910 [2020-10-28 13:51:02,680 INFO L226 Difference]: Without dead ends: 53458 [2020-10-28 13:51:02,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:51:02,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53458 states. [2020-10-28 13:51:03,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53458 to 51299. [2020-10-28 13:51:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51299 states. [2020-10-28 13:51:03,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51299 states to 51299 states and 55919 transitions. [2020-10-28 13:51:03,413 INFO L78 Accepts]: Start accepts. Automaton has 51299 states and 55919 transitions. Word has length 1131 [2020-10-28 13:51:03,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:51:03,415 INFO L481 AbstractCegarLoop]: Abstraction has 51299 states and 55919 transitions. [2020-10-28 13:51:03,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:51:03,415 INFO L276 IsEmpty]: Start isEmpty. Operand 51299 states and 55919 transitions. [2020-10-28 13:51:03,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1152 [2020-10-28 13:51:03,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:51:03,433 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:51:03,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:51:03,434 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:51:03,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:51:03,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1459545464, now seen corresponding path program 1 times [2020-10-28 13:51:03,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:51:03,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557328490] [2020-10-28 13:51:03,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:51:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:04,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:07,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:07,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1175 [2020-10-28 13:51:07,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:51:07,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3701 [2020-10-28 13:51:07,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:07,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:07,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:07,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-28 13:51:07,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 13:51:07,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:07,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:51:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:07,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:07,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:07,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:51:07,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:07,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:51:07,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:07,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:07,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:07,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:07,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:07,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:07,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:51:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:08,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:08,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:51:08,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:08,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:51:08,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:08,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:08,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:08,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:51:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:08,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:08,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:08,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:51:08,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:08,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:51:08,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:08,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:08,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:08,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:08,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:08,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:08,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:51:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:08,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:08,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:08,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:51:08,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:08,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:51:08,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:08,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:08,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:08,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:08,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:08,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:08,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:51:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:08,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:08,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:08,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:51:08,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:08,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:51:08,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:08,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:08,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:08,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:08,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:08,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:08,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:51:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:08,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:08,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:08,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:51:08,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:08,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:51:08,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:08,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:08,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:08,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:08,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:08,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:08,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:51:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:08,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:08,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:08,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:51:08,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:08,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:51:08,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:08,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:08,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:08,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:08,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 13:51:08,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:08,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-28 13:51:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:08,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:08,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:08,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:51:08,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:08,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 13:51:08,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:08,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:08,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:08,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:51:08,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 13:51:08,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 523 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-28 13:51:09,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557328490] [2020-10-28 13:51:09,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:51:09,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:51:09,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859859656] [2020-10-28 13:51:09,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:51:09,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:51:09,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:51:09,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:51:09,827 INFO L87 Difference]: Start difference. First operand 51299 states and 55919 transitions. Second operand 7 states.