/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/Problem03_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:22:07,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:22:07,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:22:07,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:22:07,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:22:07,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:22:07,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:22:07,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:22:07,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:22:07,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:22:07,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:22:07,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:22:07,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:22:07,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:22:07,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:22:07,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:22:07,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:22:07,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:22:07,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:22:07,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:22:07,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:22:07,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:22:07,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:22:07,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:22:07,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:22:07,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:22:07,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:22:07,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:22:07,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:22:07,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:22:07,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:22:07,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:22:07,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:22:07,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:22:07,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:22:07,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:22:07,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:22:07,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:22:07,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:22:07,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:22:07,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:22:07,517 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 10:22:07,542 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:22:07,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:22:07,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:22:07,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:22:07,545 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:22:07,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:22:07,545 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:22:07,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:22:07,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:22:07,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:22:07,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:22:07,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:22:07,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:22:07,546 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:22:07,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:22:07,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:22:07,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:22:07,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:22:07,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:22:07,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:22:07,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:22:07,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:22:07,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:22:07,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:22:07,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:22:07,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:22:07,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:22:07,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:22:07,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:22:07,550 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:22:07,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:22:07,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:22:07,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:22:07,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:22:07,966 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:22:07,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label55.c [2020-10-28 10:22:08,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ca4db103/6c55235c82b648a780ad7041d4a9f737/FLAG12b2945c3 [2020-10-28 10:22:08,902 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:22:08,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label55.c [2020-10-28 10:22:08,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ca4db103/6c55235c82b648a780ad7041d4a9f737/FLAG12b2945c3 [2020-10-28 10:22:09,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ca4db103/6c55235c82b648a780ad7041d4a9f737 [2020-10-28 10:22:09,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:22:09,073 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:22:09,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:22:09,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:22:09,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:22:09,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:22:09" (1/1) ... [2020-10-28 10:22:09,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ebe2121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:22:09, skipping insertion in model container [2020-10-28 10:22:09,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:22:09" (1/1) ... [2020-10-28 10:22:09,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:22:09,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:22:09,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:22:09,980 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:22:10,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:22:10,261 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:22:10,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:22:10 WrapperNode [2020-10-28 10:22:10,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:22:10,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:22:10,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:22:10,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:22:10,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:22:10" (1/1) ... [2020-10-28 10:22:10,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:22:10" (1/1) ... [2020-10-28 10:22:10,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:22:10" (1/1) ... [2020-10-28 10:22:10,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:22:10" (1/1) ... [2020-10-28 10:22:10,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:22:10" (1/1) ... [2020-10-28 10:22:10,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:22:10" (1/1) ... [2020-10-28 10:22:10,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:22:10" (1/1) ... [2020-10-28 10:22:10,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:22:10,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:22:10,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:22:10,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:22:10,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:22:10" (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 10:22:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:22:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:22:10,574 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:22:10,574 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:22:10,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:22:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:22:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:22:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:22:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:22:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:22:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:22:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:22:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:22:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:22:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:22:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:22:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:22:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:22:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:22:12,669 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:22:12,669 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:22:12,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:22:12 BoogieIcfgContainer [2020-10-28 10:22:12,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:22:12,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:22:12,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:22:12,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:22:12,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:22:09" (1/3) ... [2020-10-28 10:22:12,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486ee6a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:22:12, skipping insertion in model container [2020-10-28 10:22:12,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:22:10" (2/3) ... [2020-10-28 10:22:12,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486ee6a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:22:12, skipping insertion in model container [2020-10-28 10:22:12,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:22:12" (3/3) ... [2020-10-28 10:22:12,684 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label55.c [2020-10-28 10:22:12,696 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:22:12,702 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:22:12,715 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:22:12,760 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:22:12,760 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:22:12,760 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:22:12,760 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:22:12,760 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:22:12,761 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:22:12,761 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:22:12,761 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:22:12,797 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-28 10:22:12,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-28 10:22:12,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:22:12,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:22:12,820 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:22:12,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:22:12,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1328892236, now seen corresponding path program 1 times [2020-10-28 10:22:12,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:22:12,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561968493] [2020-10-28 10:22:12,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:22:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:13,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:13,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:17,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:17,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 10:22:17,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:22:17,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4387 [2020-10-28 10:22:17,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:17,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:17,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:22:17,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:22:17,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-28 10:22:17,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:22:18,143 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:22:18,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:22:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:18,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:18,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:18,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:22:18,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:18,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 10:22:18,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:18,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:22:18,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:18,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:22:18,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:22:18,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:22:18,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561968493] [2020-10-28 10:22:18,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:22:18,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 10:22:18,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192858683] [2020-10-28 10:22:18,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:22:18,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:22:18,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:22:18,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:22:18,355 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 5 states. [2020-10-28 10:22:18,622 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:22:22,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:22:22,277 INFO L93 Difference]: Finished difference Result 898 states and 1560 transitions. [2020-10-28 10:22:22,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:22:22,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-28 10:22:22,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:22:22,297 INFO L225 Difference]: With dead ends: 898 [2020-10-28 10:22:22,298 INFO L226 Difference]: Without dead ends: 489 [2020-10-28 10:22:22,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:22:22,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-10-28 10:22:22,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 471. [2020-10-28 10:22:22,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-28 10:22:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 756 transitions. [2020-10-28 10:22:22,465 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 756 transitions. Word has length 169 [2020-10-28 10:22:22,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:22:22,466 INFO L481 AbstractCegarLoop]: Abstraction has 471 states and 756 transitions. [2020-10-28 10:22:22,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:22:22,467 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 756 transitions. [2020-10-28 10:22:22,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 10:22:22,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:22:22,474 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 10:22:22,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:22:22,474 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:22:22,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:22:22,475 INFO L82 PathProgramCache]: Analyzing trace with hash -966131141, now seen corresponding path program 1 times [2020-10-28 10:22:22,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:22:22,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082833133] [2020-10-28 10:22:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:22:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:22,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:23,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:25,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:25,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:25,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-28 10:22:25,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:22:25,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2867 [2020-10-28 10:22:25,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:25,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:25,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:22:25,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:22:25,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-28 10:22:25,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:22:25,776 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:22:25,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:22:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:25,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:25,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:25,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:22:25,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:25,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:22:25,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:25,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:25,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:22:25,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:25,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:22:25,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:22:25,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:22:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:25,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:25,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:25,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:22:25,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:25,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 10:22:25,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:25,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:25,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:22:25,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:25,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:22:25,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:22:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:22:26,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082833133] [2020-10-28 10:22:26,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:22:26,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:22:26,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711311154] [2020-10-28 10:22:26,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:22:26,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:22:26,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:22:26,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:22:26,055 INFO L87 Difference]: Start difference. First operand 471 states and 756 transitions. Second operand 5 states. [2020-10-28 10:22:26,459 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:22:29,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:22:29,541 INFO L93 Difference]: Finished difference Result 1363 states and 2221 transitions. [2020-10-28 10:22:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:22:29,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-28 10:22:29,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:22:29,549 INFO L225 Difference]: With dead ends: 1363 [2020-10-28 10:22:29,549 INFO L226 Difference]: Without dead ends: 898 [2020-10-28 10:22:29,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:22:29,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-10-28 10:22:29,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 892. [2020-10-28 10:22:29,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-10-28 10:22:29,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1266 transitions. [2020-10-28 10:22:29,596 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1266 transitions. Word has length 178 [2020-10-28 10:22:29,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:22:29,596 INFO L481 AbstractCegarLoop]: Abstraction has 892 states and 1266 transitions. [2020-10-28 10:22:29,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:22:29,597 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1266 transitions. [2020-10-28 10:22:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-28 10:22:29,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:22:29,601 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:22:29,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:22:29,601 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:22:29,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:22:29,602 INFO L82 PathProgramCache]: Analyzing trace with hash 728179168, now seen corresponding path program 1 times [2020-10-28 10:22:29,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:22:29,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316536805] [2020-10-28 10:22:29,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:22:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:29,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:29,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:29,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:30,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:31,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:32,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:32,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-28 10:22:32,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:22:32,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2899 [2020-10-28 10:22:32,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:32,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:32,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:22:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:22:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 10:22:32,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:22:32,890 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:22:32,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:22:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:32,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:32,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:32,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:22:32,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:32,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:22:32,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:32,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:22:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:22:32,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:33,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:22:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:33,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:33,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:33,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:33,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:22:33,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:22:33,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 10:22:33,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:33,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:22:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:22:33,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:33,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:22:33,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316536805] [2020-10-28 10:22:33,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:22:33,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:22:33,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211966661] [2020-10-28 10:22:33,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:22:33,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:22:33,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:22:33,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:22:33,142 INFO L87 Difference]: Start difference. First operand 892 states and 1266 transitions. Second operand 5 states. [2020-10-28 10:22:33,574 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:22:36,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:22:36,505 INFO L93 Difference]: Finished difference Result 2622 states and 3751 transitions. [2020-10-28 10:22:36,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:22:36,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-28 10:22:36,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:22:36,514 INFO L225 Difference]: With dead ends: 2622 [2020-10-28 10:22:36,515 INFO L226 Difference]: Without dead ends: 896 [2020-10-28 10:22:36,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:22:36,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-10-28 10:22:36,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 892. [2020-10-28 10:22:36,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-10-28 10:22:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1265 transitions. [2020-10-28 10:22:36,581 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1265 transitions. Word has length 179 [2020-10-28 10:22:36,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:22:36,582 INFO L481 AbstractCegarLoop]: Abstraction has 892 states and 1265 transitions. [2020-10-28 10:22:36,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:22:36,582 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1265 transitions. [2020-10-28 10:22:36,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-28 10:22:36,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:22:36,592 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:22:36,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:22:36,594 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:22:36,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:22:36,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1418010658, now seen corresponding path program 1 times [2020-10-28 10:22:36,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:22:36,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484942279] [2020-10-28 10:22:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:22:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:36,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:37,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:37,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:39,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:39,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-28 10:22:39,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:22:39,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3039 [2020-10-28 10:22:39,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:39,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:22:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 10:22:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-28 10:22:39,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:40,059 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:22:40,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:22:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:40,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:40,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:40,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:22:40,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:40,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:22:40,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:40,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:22:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:22:40,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:40,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:22:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:40,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:40,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:40,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:22:40,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:40,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:22:40,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:40,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:22:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 10:22:40,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:22:40,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484942279] [2020-10-28 10:22:40,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:22:40,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:22:40,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746667360] [2020-10-28 10:22:40,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:22:40,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:22:40,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:22:40,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:22:40,257 INFO L87 Difference]: Start difference. First operand 892 states and 1265 transitions. Second operand 5 states. [2020-10-28 10:22:40,600 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:22:43,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:22:43,961 INFO L93 Difference]: Finished difference Result 2202 states and 3250 transitions. [2020-10-28 10:22:43,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:22:43,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-28 10:22:43,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:22:43,970 INFO L225 Difference]: With dead ends: 2202 [2020-10-28 10:22:43,970 INFO L226 Difference]: Without dead ends: 1316 [2020-10-28 10:22:43,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:22:43,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2020-10-28 10:22:44,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1310. [2020-10-28 10:22:44,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2020-10-28 10:22:44,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1909 transitions. [2020-10-28 10:22:44,026 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1909 transitions. Word has length 179 [2020-10-28 10:22:44,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:22:44,027 INFO L481 AbstractCegarLoop]: Abstraction has 1310 states and 1909 transitions. [2020-10-28 10:22:44,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:22:44,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1909 transitions. [2020-10-28 10:22:44,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-28 10:22:44,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:22:44,032 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:22:44,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:22:44,032 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:22:44,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:22:44,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1716964693, now seen corresponding path program 1 times [2020-10-28 10:22:44,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:22:44,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765816938] [2020-10-28 10:22:44,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:22:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:44,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:44,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:44,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-28 10:22:44,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:44,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 785 [2020-10-28 10:22:44,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:44,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:22:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:22:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 10:22:44,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:45,142 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:22:45,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:22:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:45,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:45,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:45,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:22:45,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:22:45,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:45,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:22:45,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:45,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:22:45,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:45,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:22:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:45,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:45,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:45,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 10:22:45,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:45,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 10:22:45,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:45,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:22:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:22:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:22:45,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:22:45,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765816938] [2020-10-28 10:22:45,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:22:45,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:22:45,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630839256] [2020-10-28 10:22:45,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:22:45,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:22:45,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:22:45,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:22:45,417 INFO L87 Difference]: Start difference. First operand 1310 states and 1909 transitions. Second operand 7 states. [2020-10-28 10:22:45,658 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 10:22:48,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:22:48,866 INFO L93 Difference]: Finished difference Result 3934 states and 5847 transitions. [2020-10-28 10:22:48,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 10:22:48,867 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-10-28 10:22:48,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:22:48,883 INFO L225 Difference]: With dead ends: 3934 [2020-10-28 10:22:48,883 INFO L226 Difference]: Without dead ends: 2630 [2020-10-28 10:22:48,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 10:22:48,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2020-10-28 10:22:48,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2611. [2020-10-28 10:22:48,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2611 states. [2020-10-28 10:22:48,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3846 transitions. [2020-10-28 10:22:48,993 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3846 transitions. Word has length 185 [2020-10-28 10:22:48,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:22:48,994 INFO L481 AbstractCegarLoop]: Abstraction has 2611 states and 3846 transitions. [2020-10-28 10:22:48,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:22:48,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3846 transitions. [2020-10-28 10:22:49,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-28 10:22:49,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:22:49,003 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:22:49,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:22:49,004 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:22:49,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:22:49,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1733059977, now seen corresponding path program 1 times [2020-10-28 10:22:49,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:22:49,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274899267] [2020-10-28 10:22:49,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:22:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:49,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:49,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:50,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:50,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-28 10:22:50,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:22:50,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1871 [2020-10-28 10:22:50,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:50,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:22:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 10:22:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-28 10:22:50,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:51,312 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:22:51,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:22:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:51,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:51,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:51,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:22:51,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:51,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:22:51,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:51,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:51,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:22:51,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:51,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:22:51,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:51,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:22:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:51,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:51,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:51,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 10:22:51,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:51,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 10:22:51,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:51,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:51,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:22:51,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:51,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:22:51,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:22:51,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274899267] [2020-10-28 10:22:51,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:22:51,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:22:51,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409742948] [2020-10-28 10:22:51,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:22:51,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:22:51,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:22:51,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:22:51,568 INFO L87 Difference]: Start difference. First operand 2611 states and 3846 transitions. Second operand 5 states. [2020-10-28 10:22:51,920 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:22:55,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:22:55,458 INFO L93 Difference]: Finished difference Result 7788 states and 11819 transitions. [2020-10-28 10:22:55,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:22:55,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-10-28 10:22:55,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:22:55,494 INFO L225 Difference]: With dead ends: 7788 [2020-10-28 10:22:55,494 INFO L226 Difference]: Without dead ends: 5183 [2020-10-28 10:22:55,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:22:55,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5183 states. [2020-10-28 10:22:55,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5183 to 5141. [2020-10-28 10:22:55,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5141 states. [2020-10-28 10:22:55,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 7691 transitions. [2020-10-28 10:22:55,707 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 7691 transitions. Word has length 192 [2020-10-28 10:22:55,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:22:55,707 INFO L481 AbstractCegarLoop]: Abstraction has 5141 states and 7691 transitions. [2020-10-28 10:22:55,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:22:55,708 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 7691 transitions. [2020-10-28 10:22:55,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-28 10:22:55,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:22:55,725 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:22:55,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:22:55,725 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:22:55,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:22:55,726 INFO L82 PathProgramCache]: Analyzing trace with hash -155221084, now seen corresponding path program 1 times [2020-10-28 10:22:55,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:22:55,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079882155] [2020-10-28 10:22:55,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:22:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:55,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:56,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:56,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:57,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:58,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:58,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-28 10:22:58,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:22:58,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3091 [2020-10-28 10:22:58,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:58,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:22:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 10:22:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-28 10:22:58,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:59,190 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:22:59,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:22:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:59,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:59,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:59,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:22:59,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:59,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:22:59,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:59,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:22:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:22:59,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:59,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:22:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:59,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:59,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:59,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 10:22:59,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:59,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 10:22:59,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:59,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:22:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 10:22:59,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:22:59,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079882155] [2020-10-28 10:22:59,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:22:59,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:22:59,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861853337] [2020-10-28 10:22:59,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:22:59,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:22:59,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:22:59,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:22:59,437 INFO L87 Difference]: Start difference. First operand 5141 states and 7691 transitions. Second operand 5 states. [2020-10-28 10:22:59,699 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:23:03,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:23:03,012 INFO L93 Difference]: Finished difference Result 15336 states and 23639 transitions. [2020-10-28 10:23:03,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:23:03,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-28 10:23:03,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:23:03,068 INFO L225 Difference]: With dead ends: 15336 [2020-10-28 10:23:03,068 INFO L226 Difference]: Without dead ends: 10201 [2020-10-28 10:23:03,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:23:03,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10201 states. [2020-10-28 10:23:03,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10201 to 10196. [2020-10-28 10:23:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10196 states. [2020-10-28 10:23:03,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10196 states to 10196 states and 14727 transitions. [2020-10-28 10:23:03,471 INFO L78 Accepts]: Start accepts. Automaton has 10196 states and 14727 transitions. Word has length 205 [2020-10-28 10:23:03,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:23:03,472 INFO L481 AbstractCegarLoop]: Abstraction has 10196 states and 14727 transitions. [2020-10-28 10:23:03,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:23:03,472 INFO L276 IsEmpty]: Start isEmpty. Operand 10196 states and 14727 transitions. [2020-10-28 10:23:03,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-28 10:23:03,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:23:03,506 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:23:03,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:23:03,507 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:23:03,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:23:03,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1087117496, now seen corresponding path program 1 times [2020-10-28 10:23:03,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:23:03,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814237537] [2020-10-28 10:23:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:23:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:03,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:04,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:05,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:05,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:05,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-28 10:23:05,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:23:05,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2191 [2020-10-28 10:23:05,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:05,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:23:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 10:23:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-28 10:23:05,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:06,075 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:23:06,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:23:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:06,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:06,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:06,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:23:06,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:06,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:23:06,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:06,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:06,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:23:06,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:06,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:23:06,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:06,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:23:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:06,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:06,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:06,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 10:23:06,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:06,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 10:23:06,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:06,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:23:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 10:23:06,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:23:06,430 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:23:06,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814237537] [2020-10-28 10:23:06,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:23:06,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:23:06,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694283790] [2020-10-28 10:23:06,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:23:06,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:23:06,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:23:06,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:23:06,434 INFO L87 Difference]: Start difference. First operand 10196 states and 14727 transitions. Second operand 5 states. [2020-10-28 10:23:06,737 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:23:09,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:23:09,736 INFO L93 Difference]: Finished difference Result 28598 states and 42545 transitions. [2020-10-28 10:23:09,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:23:09,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-28 10:23:09,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:23:09,817 INFO L225 Difference]: With dead ends: 28598 [2020-10-28 10:23:09,817 INFO L226 Difference]: Without dead ends: 18408 [2020-10-28 10:23:09,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:23:09,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18408 states. [2020-10-28 10:23:10,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18408 to 18183. [2020-10-28 10:23:10,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18183 states. [2020-10-28 10:23:10,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18183 states to 18183 states and 25897 transitions. [2020-10-28 10:23:10,471 INFO L78 Accepts]: Start accepts. Automaton has 18183 states and 25897 transitions. Word has length 215 [2020-10-28 10:23:10,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:23:10,472 INFO L481 AbstractCegarLoop]: Abstraction has 18183 states and 25897 transitions. [2020-10-28 10:23:10,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:23:10,472 INFO L276 IsEmpty]: Start isEmpty. Operand 18183 states and 25897 transitions. [2020-10-28 10:23:10,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-28 10:23:10,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:23:10,536 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:23:10,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:23:10,536 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:23:10,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:23:10,537 INFO L82 PathProgramCache]: Analyzing trace with hash -909234966, now seen corresponding path program 1 times [2020-10-28 10:23:10,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:23:10,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376130210] [2020-10-28 10:23:10,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:23:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:10,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:10,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:10,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:11,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:12,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:15,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:15,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-28 10:23:15,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:23:15,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 10:23:15,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:15,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:23:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:23:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 10:23:15,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:15,889 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:23:15,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:23:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:15,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:15,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:15,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:23:15,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:15,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:23:15,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:15,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:15,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:23:15,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:15,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:23:15,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:16,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:23:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:16,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:16,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:16,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:23:16,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:16,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:23:16,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:16,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:23:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:23:16,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:16,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 10:23:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:16,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:16,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:16,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 10:23:16,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:16,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 10:23:16,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:16,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:16,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:23:16,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:23:16,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 10:23:16,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:16,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 10:23:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:16,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:16,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:16,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 10:23:16,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:16,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 10:23:16,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:16,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:23:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:23:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:23:16,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 10:23:16,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376130210] [2020-10-28 10:23:16,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:23:16,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:23:16,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922458194] [2020-10-28 10:23:16,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:23:16,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:23:16,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:23:16,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:23:16,311 INFO L87 Difference]: Start difference. First operand 18183 states and 25897 transitions. Second operand 8 states. [2020-10-28 10:23:16,556 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:23:17,032 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:23:19,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:23:19,842 INFO L93 Difference]: Finished difference Result 36606 states and 54278 transitions. [2020-10-28 10:23:19,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:23:19,843 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-10-28 10:23:19,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:23:19,929 INFO L225 Difference]: With dead ends: 36606 [2020-10-28 10:23:19,929 INFO L226 Difference]: Without dead ends: 18429 [2020-10-28 10:23:19,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:23:20,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18429 states. [2020-10-28 10:23:20,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18429 to 18250. [2020-10-28 10:23:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18250 states. [2020-10-28 10:23:20,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18250 states to 18250 states and 24789 transitions. [2020-10-28 10:23:20,635 INFO L78 Accepts]: Start accepts. Automaton has 18250 states and 24789 transitions. Word has length 218 [2020-10-28 10:23:20,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:23:20,635 INFO L481 AbstractCegarLoop]: Abstraction has 18250 states and 24789 transitions. [2020-10-28 10:23:20,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:23:20,635 INFO L276 IsEmpty]: Start isEmpty. Operand 18250 states and 24789 transitions. [2020-10-28 10:23:20,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-28 10:23:20,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:23:20,687 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:23:20,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 10:23:20,687 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:23:20,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:23:20,688 INFO L82 PathProgramCache]: Analyzing trace with hash -2134454381, now seen corresponding path program 1 times [2020-10-28 10:23:20,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:23:20,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102808758] [2020-10-28 10:23:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:23:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:20,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:21,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:23,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:23,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 10:23:23,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:23:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2946 [2020-10-28 10:23:23,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:23,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:23:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:23:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 10:23:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:23,955 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:23:23,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:23:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:23,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:23,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:23:23,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:23,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 10:23:23,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:23,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:23:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:23,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:23:23,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:24,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:23:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:24,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:24,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:24,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:23:24,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:24,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 10:23:24,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:24,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:23:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:23:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:23:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:24,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 10:23:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:24,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:24,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:24,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 10:23:24,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:24,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:23:24,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:24,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:24,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:23:24,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 10:23:24,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:23:24,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 55 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 10:23:24,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102808758] [2020-10-28 10:23:24,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:23:24,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:23:24,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137888366] [2020-10-28 10:23:24,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:23:24,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:23:24,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:23:24,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:23:24,379 INFO L87 Difference]: Start difference. First operand 18250 states and 24789 transitions. Second operand 7 states. [2020-10-28 10:23:24,634 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:23:25,612 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:23:28,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:23:28,290 INFO L93 Difference]: Finished difference Result 42503 states and 58097 transitions. [2020-10-28 10:23:28,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:23:28,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-28 10:23:28,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:23:28,369 INFO L225 Difference]: With dead ends: 42503 [2020-10-28 10:23:28,369 INFO L226 Difference]: Without dead ends: 24259 [2020-10-28 10:23:28,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:23:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24259 states. [2020-10-28 10:23:28,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24259 to 23821. [2020-10-28 10:23:28,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23821 states. [2020-10-28 10:23:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23821 states to 23821 states and 31242 transitions. [2020-10-28 10:23:28,996 INFO L78 Accepts]: Start accepts. Automaton has 23821 states and 31242 transitions. Word has length 230 [2020-10-28 10:23:28,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:23:28,997 INFO L481 AbstractCegarLoop]: Abstraction has 23821 states and 31242 transitions. [2020-10-28 10:23:28,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:23:28,997 INFO L276 IsEmpty]: Start isEmpty. Operand 23821 states and 31242 transitions. [2020-10-28 10:23:29,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-28 10:23:29,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:23:29,042 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:23:29,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 10:23:29,042 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:23:29,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:23:29,043 INFO L82 PathProgramCache]: Analyzing trace with hash 285411621, now seen corresponding path program 1 times [2020-10-28 10:23:29,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:23:29,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293454179] [2020-10-28 10:23:29,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:23:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:29,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:29,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:29,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:30,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:31,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:34,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:34,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-28 10:23:34,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:23:34,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 10:23:34,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:34,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:23:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:23:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 10:23:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:34,347 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:23:34,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:23:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:34,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:34,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:34,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:23:34,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:34,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:23:34,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:34,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:34,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:23:34,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:34,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:23:34,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:34,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:23:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:34,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:34,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:34,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:23:34,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:34,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 10:23:34,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:34,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:23:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:23:34,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:34,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:23:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:34,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:34,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:34,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 10:23:34,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:34,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 10:23:34,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:34,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:23:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:23:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 10:23:34,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:34,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 10:23:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:34,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:34,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:34,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 10:23:34,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:34,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 10:23:34,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:34,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:23:34,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 10:23:34,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:23:34,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:34,713 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 73 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-28 10:23:34,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293454179] [2020-10-28 10:23:34,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:23:34,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:23:34,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674309960] [2020-10-28 10:23:34,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:23:34,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:23:34,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:23:34,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:23:34,715 INFO L87 Difference]: Start difference. First operand 23821 states and 31242 transitions. Second operand 7 states. [2020-10-28 10:23:35,082 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:23:35,543 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:23:40,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:23:40,695 INFO L93 Difference]: Finished difference Result 52176 states and 71712 transitions. [2020-10-28 10:23:40,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:23:40,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-10-28 10:23:40,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:23:40,933 INFO L225 Difference]: With dead ends: 52176 [2020-10-28 10:23:40,933 INFO L226 Difference]: Without dead ends: 28361 [2020-10-28 10:23:40,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:23:40,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28361 states. [2020-10-28 10:23:41,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28361 to 26630. [2020-10-28 10:23:41,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26630 states. [2020-10-28 10:23:41,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26630 states to 26630 states and 34455 transitions. [2020-10-28 10:23:41,653 INFO L78 Accepts]: Start accepts. Automaton has 26630 states and 34455 transitions. Word has length 231 [2020-10-28 10:23:41,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:23:41,653 INFO L481 AbstractCegarLoop]: Abstraction has 26630 states and 34455 transitions. [2020-10-28 10:23:41,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:23:41,653 INFO L276 IsEmpty]: Start isEmpty. Operand 26630 states and 34455 transitions. [2020-10-28 10:23:41,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-28 10:23:41,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:23:41,689 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:23:41,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 10:23:41,690 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:23:41,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:23:41,690 INFO L82 PathProgramCache]: Analyzing trace with hash -496351619, now seen corresponding path program 1 times [2020-10-28 10:23:41,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:23:41,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4104599] [2020-10-28 10:23:41,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:23:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:41,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:42,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:43,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:43,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 10:23:43,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:23:43,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1717 [2020-10-28 10:23:43,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:43,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:43,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:23:43,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-28 10:23:43,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-28 10:23:43,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:43,761 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:23:43,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:23:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:43,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:43,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:43,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:23:43,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:43,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:23:43,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:43,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:23:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:23:43,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:43,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:23:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:43,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:43,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:43,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 10:23:43,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:43,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 10:23:43,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:43,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:43,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:23:43,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:43,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 10:23:43,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:44,072 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:23:44,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4104599] [2020-10-28 10:23:44,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:23:44,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:23:44,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435960919] [2020-10-28 10:23:44,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:23:44,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:23:44,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:23:44,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:23:44,075 INFO L87 Difference]: Start difference. First operand 26630 states and 34455 transitions. Second operand 5 states. [2020-10-28 10:23:44,402 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:23:47,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:23:47,987 INFO L93 Difference]: Finished difference Result 64292 states and 83778 transitions. [2020-10-28 10:23:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:23:47,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 236 [2020-10-28 10:23:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:23:48,120 INFO L225 Difference]: With dead ends: 64292 [2020-10-28 10:23:48,121 INFO L226 Difference]: Without dead ends: 38327 [2020-10-28 10:23:48,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:23:48,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38327 states. [2020-10-28 10:23:48,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38327 to 37662. [2020-10-28 10:23:48,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37662 states. [2020-10-28 10:23:49,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37662 states to 37662 states and 47831 transitions. [2020-10-28 10:23:49,003 INFO L78 Accepts]: Start accepts. Automaton has 37662 states and 47831 transitions. Word has length 236 [2020-10-28 10:23:49,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:23:49,004 INFO L481 AbstractCegarLoop]: Abstraction has 37662 states and 47831 transitions. [2020-10-28 10:23:49,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:23:49,004 INFO L276 IsEmpty]: Start isEmpty. Operand 37662 states and 47831 transitions. [2020-10-28 10:23:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-28 10:23:49,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:23:49,048 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:23:49,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 10:23:49,048 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:23:49,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:23:49,049 INFO L82 PathProgramCache]: Analyzing trace with hash 936766656, now seen corresponding path program 1 times [2020-10-28 10:23:49,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:23:49,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828494373] [2020-10-28 10:23:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:23:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:49,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:49,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:50,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:51,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:52,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:52,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-28 10:23:52,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:23:52,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3339 [2020-10-28 10:23:52,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:52,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:52,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:23:52,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 10:23:52,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 10:23:52,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:52,722 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:23:52,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:23:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:52,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:52,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:52,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:23:52,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:52,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:23:52,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:52,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:23:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:23:52,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:52,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:23:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:52,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:52,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:52,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:23:52,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:52,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:23:52,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:52,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:23:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 10:23:52,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:52,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:23:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:52,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:52,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:52,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:23:52,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:52,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 10:23:52,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:52,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:23:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:23:52,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:23:52,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:53,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 10:23:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:53,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:53,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:53,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 10:23:53,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:53,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 10:23:53,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:53,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:53,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:23:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 10:23:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:23:53,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:53,170 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 75 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 10:23:53,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828494373] [2020-10-28 10:23:53,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:23:53,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:23:53,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773516854] [2020-10-28 10:23:53,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:23:53,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:23:53,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:23:53,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:23:53,172 INFO L87 Difference]: Start difference. First operand 37662 states and 47831 transitions. Second operand 7 states. [2020-10-28 10:23:53,420 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:23:54,333 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:23:57,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:23:57,137 INFO L93 Difference]: Finished difference Result 74404 states and 95447 transitions. [2020-10-28 10:23:57,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:23:57,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-10-28 10:23:57,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:23:57,255 INFO L225 Difference]: With dead ends: 74404 [2020-10-28 10:23:57,256 INFO L226 Difference]: Without dead ends: 37852 [2020-10-28 10:23:57,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:23:57,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37852 states. [2020-10-28 10:23:57,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37852 to 37521. [2020-10-28 10:23:57,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37521 states. [2020-10-28 10:23:58,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37521 states to 37521 states and 44501 transitions. [2020-10-28 10:23:58,032 INFO L78 Accepts]: Start accepts. Automaton has 37521 states and 44501 transitions. Word has length 241 [2020-10-28 10:23:58,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:23:58,033 INFO L481 AbstractCegarLoop]: Abstraction has 37521 states and 44501 transitions. [2020-10-28 10:23:58,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:23:58,033 INFO L276 IsEmpty]: Start isEmpty. Operand 37521 states and 44501 transitions. [2020-10-28 10:23:58,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-28 10:23:58,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:23:58,068 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:23:58,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 10:23:58,068 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:23:58,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:23:58,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1025765840, now seen corresponding path program 1 times [2020-10-28 10:23:58,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:23:58,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828955382] [2020-10-28 10:23:58,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:23:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:58,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:58,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:59,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:03,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:03,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-28 10:24:03,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:24:03,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 10:24:03,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:03,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 10:24:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 10:24:03,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 10:24:03,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:03,486 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:24:03,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:24:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:03,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:03,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:03,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:24:03,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:03,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:24:03,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:03,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:03,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:24:03,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:24:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:24:03,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:03,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:24:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:03,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:03,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:03,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:24:03,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:03,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:24:03,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:03,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:24:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:24:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 10:24:03,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:03,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:24:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:03,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:03,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:03,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:24:03,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:03,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 10:24:03,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:03,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 10:24:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:24:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 10:24:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:03,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 10:24:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:03,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:04,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:04,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:24:04,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:04,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 10:24:04,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:04,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:04,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:24:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:24:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:24:04,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:24:04,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 10:24:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:04,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:04,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:04,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 10:24:04,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:04,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:24:04,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:04,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:24:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 10:24:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:24:04,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:04,244 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 145 proven. 30 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 10:24:04,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828955382] [2020-10-28 10:24:04,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:24:04,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 10:24:04,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892902842] [2020-10-28 10:24:04,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 10:24:04,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:24:04,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 10:24:04,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 10:24:04,246 INFO L87 Difference]: Start difference. First operand 37521 states and 44501 transitions. Second operand 10 states. [2020-10-28 10:24:04,528 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:24:05,491 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 163 [2020-10-28 10:24:06,643 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-28 10:24:07,187 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-28 10:24:09,298 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 164 [2020-10-28 10:24:10,093 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 159 [2020-10-28 10:24:12,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:24:12,711 INFO L93 Difference]: Finished difference Result 76761 states and 92673 transitions. [2020-10-28 10:24:12,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 10:24:12,711 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 273 [2020-10-28 10:24:12,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:24:12,834 INFO L225 Difference]: With dead ends: 76761 [2020-10-28 10:24:12,834 INFO L226 Difference]: Without dead ends: 40403 [2020-10-28 10:24:12,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2020-10-28 10:24:12,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40403 states. [2020-10-28 10:24:13,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40403 to 40025. [2020-10-28 10:24:13,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40025 states. [2020-10-28 10:24:13,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40025 states to 40025 states and 47119 transitions. [2020-10-28 10:24:13,841 INFO L78 Accepts]: Start accepts. Automaton has 40025 states and 47119 transitions. Word has length 273 [2020-10-28 10:24:13,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:24:13,841 INFO L481 AbstractCegarLoop]: Abstraction has 40025 states and 47119 transitions. [2020-10-28 10:24:13,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 10:24:13,842 INFO L276 IsEmpty]: Start isEmpty. Operand 40025 states and 47119 transitions. [2020-10-28 10:24:13,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-28 10:24:13,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:24:13,872 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 10:24:13,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 10:24:13,873 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:24:13,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:24:13,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1844858077, now seen corresponding path program 1 times [2020-10-28 10:24:13,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:24:13,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681646758] [2020-10-28 10:24:13,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:24:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:13,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:14,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:14,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:15,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:18,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:18,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-28 10:24:18,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:24:18,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 10:24:18,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:18,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:24:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 10:24:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 10:24:18,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:19,216 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:24:19,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:24:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:19,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:19,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:19,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:24:19,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:19,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:24:19,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:19,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:24:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:24:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:24:19,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:19,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:24:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:19,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:19,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:19,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:24:19,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:19,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:24:19,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:19,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:19,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:24:19,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:24:19,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:24:19,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:19,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:24:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:19,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:19,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:19,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 10:24:19,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:19,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 10:24:19,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:19,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:19,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:24:19,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:24:19,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 10:24:19,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:19,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 10:24:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:19,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:19,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:19,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:24:19,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:19,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 10:24:19,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:19,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:19,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:24:19,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:24:19,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:24:19,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:19,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 10:24:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:19,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:19,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:19,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 10:24:19,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:19,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 10:24:19,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:19,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:19,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:24:19,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 10:24:19,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:24:19,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 148 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-28 10:24:19,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681646758] [2020-10-28 10:24:19,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:24:19,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:24:19,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342307738] [2020-10-28 10:24:19,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:24:19,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:24:19,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:24:19,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:24:19,664 INFO L87 Difference]: Start difference. First operand 40025 states and 47119 transitions. Second operand 7 states. [2020-10-28 10:24:20,021 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:24:20,390 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:24:25,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:24:25,393 INFO L93 Difference]: Finished difference Result 88127 states and 108143 transitions. [2020-10-28 10:24:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:24:25,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2020-10-28 10:24:25,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:24:25,528 INFO L225 Difference]: With dead ends: 88127 [2020-10-28 10:24:25,528 INFO L226 Difference]: Without dead ends: 49263 [2020-10-28 10:24:25,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:24:25,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49263 states. [2020-10-28 10:24:26,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49263 to 48381. [2020-10-28 10:24:26,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48381 states. [2020-10-28 10:24:27,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48381 states to 48381 states and 56459 transitions. [2020-10-28 10:24:27,334 INFO L78 Accepts]: Start accepts. Automaton has 48381 states and 56459 transitions. Word has length 276 [2020-10-28 10:24:27,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:24:27,338 INFO L481 AbstractCegarLoop]: Abstraction has 48381 states and 56459 transitions. [2020-10-28 10:24:27,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:24:27,339 INFO L276 IsEmpty]: Start isEmpty. Operand 48381 states and 56459 transitions. [2020-10-28 10:24:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-28 10:24:27,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:24:27,411 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:27,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 10:24:27,412 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:24:27,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:24:27,413 INFO L82 PathProgramCache]: Analyzing trace with hash -955435799, now seen corresponding path program 1 times [2020-10-28 10:24:27,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:24:27,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523208805] [2020-10-28 10:24:27,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:24:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:27,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:27,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:28,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:31,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:31,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:32,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:32,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-28 10:24:32,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:24:32,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 10:24:32,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:32,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:24:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 10:24:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 10:24:32,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:32,821 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:24:32,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:24:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:32,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:32,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:32,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:24:32,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:32,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:24:32,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:32,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:32,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:24:32,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:24:32,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:24:32,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:32,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:24:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:32,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:32,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:32,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:24:32,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:32,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:24:32,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:32,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:32,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:24:32,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:24:32,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 10:24:32,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:32,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:24:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:33,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:33,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 10:24:33,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:33,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 10:24:33,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:33,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:33,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:24:33,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:24:33,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 10:24:33,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:33,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 10:24:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:33,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:33,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:33,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:24:33,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:33,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 10:24:33,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:33,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:24:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 10:24:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:24:33,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:33,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-28 10:24:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:33,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:33,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 10:24:33,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:33,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:24:33,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:33,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:24:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 10:24:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:24:33,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 140 proven. 57 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-28 10:24:33,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523208805] [2020-10-28 10:24:33,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:24:33,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:24:33,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376736438] [2020-10-28 10:24:33,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:24:33,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:24:33,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:24:33,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:24:33,466 INFO L87 Difference]: Start difference. First operand 48381 states and 56459 transitions. Second operand 7 states. [2020-10-28 10:24:33,843 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:24:35,120 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:24:38,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:24:38,864 INFO L93 Difference]: Finished difference Result 95884 states and 116314 transitions. [2020-10-28 10:24:38,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:24:38,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 305 [2020-10-28 10:24:38,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:24:39,126 INFO L225 Difference]: With dead ends: 95884 [2020-10-28 10:24:39,127 INFO L226 Difference]: Without dead ends: 50600 [2020-10-28 10:24:39,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:24:39,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50600 states. [2020-10-28 10:24:40,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50600 to 49672. [2020-10-28 10:24:40,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49672 states. [2020-10-28 10:24:40,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49672 states to 49672 states and 57427 transitions. [2020-10-28 10:24:40,761 INFO L78 Accepts]: Start accepts. Automaton has 49672 states and 57427 transitions. Word has length 305 [2020-10-28 10:24:40,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:24:40,761 INFO L481 AbstractCegarLoop]: Abstraction has 49672 states and 57427 transitions. [2020-10-28 10:24:40,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:24:40,761 INFO L276 IsEmpty]: Start isEmpty. Operand 49672 states and 57427 transitions. [2020-10-28 10:24:40,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-28 10:24:40,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:24:40,808 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:24:40,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 10:24:40,808 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:24:40,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:24:40,809 INFO L82 PathProgramCache]: Analyzing trace with hash -646058137, now seen corresponding path program 1 times [2020-10-28 10:24:40,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:24:40,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549454137] [2020-10-28 10:24:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:24:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:40,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:41,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:41,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:41,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:44,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:45,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:45,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-28 10:24:45,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:24:45,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 10:24:45,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:45,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:45,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:24:45,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 10:24:45,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 10:24:45,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:46,143 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:24:46,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:24:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:46,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:46,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:46,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:24:46,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:46,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:24:46,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:46,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:46,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:24:46,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:24:46,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:24:46,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:46,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:24:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:46,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:46,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:46,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:24:46,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:24:46,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:46,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:24:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:24:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:24:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:46,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:24:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:46,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:46,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:46,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 10:24:46,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:46,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 10:24:46,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:46,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:46,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:24:46,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:24:46,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 10:24:46,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:46,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 10:24:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:46,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:46,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:46,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 10:24:46,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:46,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 10:24:46,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:46,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:46,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:24:46,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:24:46,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 10:24:46,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:46,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 10:24:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:46,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:46,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:46,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:24:46,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:46,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 10:24:46,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:46,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:24:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:24:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:24:46,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:46,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 10:24:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:46,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:46,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:46,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 10:24:46,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:46,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:24:46,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:46,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:46,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:24:46,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 10:24:46,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:24:46,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 229 proven. 30 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-28 10:24:46,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549454137] [2020-10-28 10:24:46,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:24:46,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:24:46,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162848485] [2020-10-28 10:24:46,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:24:46,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:24:46,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:24:46,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:24:46,756 INFO L87 Difference]: Start difference. First operand 49672 states and 57427 transitions. Second operand 7 states. [2020-10-28 10:24:47,128 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:24:47,490 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:24:52,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:24:52,620 INFO L93 Difference]: Finished difference Result 110442 states and 131479 transitions. [2020-10-28 10:24:52,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:24:52,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 314 [2020-10-28 10:24:52,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:24:52,767 INFO L225 Difference]: With dead ends: 110442 [2020-10-28 10:24:52,767 INFO L226 Difference]: Without dead ends: 63881 [2020-10-28 10:24:52,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:24:52,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63881 states. [2020-10-28 10:24:54,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63881 to 62883. [2020-10-28 10:24:54,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62883 states. [2020-10-28 10:24:54,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62883 states to 62883 states and 72017 transitions. [2020-10-28 10:24:54,504 INFO L78 Accepts]: Start accepts. Automaton has 62883 states and 72017 transitions. Word has length 314 [2020-10-28 10:24:54,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:24:54,504 INFO L481 AbstractCegarLoop]: Abstraction has 62883 states and 72017 transitions. [2020-10-28 10:24:54,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:24:54,504 INFO L276 IsEmpty]: Start isEmpty. Operand 62883 states and 72017 transitions. [2020-10-28 10:24:54,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-28 10:24:54,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:24:54,551 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:54,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 10:24:54,552 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:24:54,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:24:54,552 INFO L82 PathProgramCache]: Analyzing trace with hash -732965287, now seen corresponding path program 1 times [2020-10-28 10:24:54,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:24:54,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842354739] [2020-10-28 10:24:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:24:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:54,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:54,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:55,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:58,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:59,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:59,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-28 10:24:59,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:24:59,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-28 10:24:59,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:59,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:59,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 10:24:59,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 10:24:59,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 10:24:59,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:59,945 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:24:59,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:24:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:59,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:59,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:59,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:24:59,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:59,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:24:59,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:59,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:59,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:24:59,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:24:59,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:24:59,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:00,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:25:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:00,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:00,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:00,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:25:00,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:00,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 10:25:00,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:00,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:25:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:25:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:25:00,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:00,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:25:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:00,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:00,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:00,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:25:00,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:00,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 10:25:00,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:00,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:25:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:25:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 10:25:00,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:00,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 10:25:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:00,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:00,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:00,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:00,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 10:25:00,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:25:00,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-28 10:25:00,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:00,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:25:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:25:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 10:25:00,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:00,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 10:25:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:00,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:00,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:00,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:25:00,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:00,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 10:25:00,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:00,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 10:25:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:25:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:25:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:00,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-28 10:25:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:00,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:00,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:00,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 10:25:00,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:00,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 10:25:00,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:00,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:00,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:25:00,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:25:00,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:25:00,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 292 proven. 10 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-28 10:25:00,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842354739] [2020-10-28 10:25:00,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:25:00,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 10:25:00,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794301507] [2020-10-28 10:25:00,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 10:25:00,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:25:00,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 10:25:00,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 10:25:00,933 INFO L87 Difference]: Start difference. First operand 62883 states and 72017 transitions. Second operand 10 states. [2020-10-28 10:25:01,245 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:25:03,950 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:25:06,100 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 161 [2020-10-28 10:25:06,988 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:25:07,660 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:25:09,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:25:09,154 INFO L93 Difference]: Finished difference Result 151252 states and 175590 transitions. [2020-10-28 10:25:09,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 10:25:09,154 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 337 [2020-10-28 10:25:09,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:25:09,553 INFO L225 Difference]: With dead ends: 151252 [2020-10-28 10:25:09,554 INFO L226 Difference]: Without dead ends: 103659 [2020-10-28 10:25:09,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-28 10:25:09,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103659 states. [2020-10-28 10:25:11,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103659 to 102763. [2020-10-28 10:25:11,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102763 states. [2020-10-28 10:25:11,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102763 states to 102763 states and 116587 transitions. [2020-10-28 10:25:11,858 INFO L78 Accepts]: Start accepts. Automaton has 102763 states and 116587 transitions. Word has length 337 [2020-10-28 10:25:11,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:25:11,858 INFO L481 AbstractCegarLoop]: Abstraction has 102763 states and 116587 transitions. [2020-10-28 10:25:11,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 10:25:11,858 INFO L276 IsEmpty]: Start isEmpty. Operand 102763 states and 116587 transitions. [2020-10-28 10:25:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2020-10-28 10:25:11,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:25:11,943 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-28 10:25:11,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 10:25:11,943 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:25:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:25:11,944 INFO L82 PathProgramCache]: Analyzing trace with hash -645639379, now seen corresponding path program 1 times [2020-10-28 10:25:11,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:25:11,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346527750] [2020-10-28 10:25:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:25:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:12,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:12,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:12,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:12,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:14,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:17,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:17,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 715 [2020-10-28 10:25:17,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:25:17,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-28 10:25:17,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:17,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:17,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:25:17,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-28 10:25:17,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-28 10:25:17,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:17,462 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:25:17,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:25:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:17,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:17,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:17,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:25:17,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:17,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:25:17,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:17,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:17,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:25:17,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:25:17,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:25:17,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:17,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:25:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:17,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:17,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:17,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:25:17,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:17,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:25:17,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:17,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:25:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:25:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:25:17,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:17,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:25:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:17,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:17,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:17,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:25:17,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:17,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:25:17,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:17,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:17,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:25:17,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:25:17,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:25:17,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:17,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 10:25:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:17,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:17,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:17,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 10:25:17,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:17,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 10:25:17,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:17,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:17,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:25:17,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:25:17,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:25:17,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:17,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 10:25:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:17,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:17,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:17,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 10:25:17,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:17,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 10:25:17,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:17,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:17,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:25:17,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:25:17,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:25:17,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:17,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-28 10:25:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:17,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:17,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:17,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 10:25:17,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:17,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 10:25:17,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:17,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:25:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:25:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 10:25:17,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:18,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-10-28 10:25:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:18,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:18,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:18,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 10:25:18,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:18,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-28 10:25:18,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:18,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:25:18,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:25:18,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 10:25:18,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:18,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-10-28 10:25:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:18,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:18,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:18,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:25:18,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:18,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 10:25:18,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:18,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:18,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:25:18,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 10:25:18,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:25:18,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:18,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-10-28 10:25:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:18,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:18,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:18,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 10:25:18,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:25:18,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:18,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:25:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 10:25:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:25:18,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 857 proven. 57 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-10-28 10:25:19,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346527750] [2020-10-28 10:25:19,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:25:19,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:25:19,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957847882] [2020-10-28 10:25:19,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:25:19,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:25:19,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:25:19,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:25:19,423 INFO L87 Difference]: Start difference. First operand 102763 states and 116587 transitions. Second operand 7 states. [2020-10-28 10:25:20,409 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 10:25:21,718 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:25:25,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:25:25,819 INFO L93 Difference]: Finished difference Result 194291 states and 228229 transitions. [2020-10-28 10:25:25,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:25:25,820 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 689 [2020-10-28 10:25:25,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:25:26,538 INFO L225 Difference]: With dead ends: 194291 [2020-10-28 10:25:26,539 INFO L226 Difference]: Without dead ends: 106824 [2020-10-28 10:25:26,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:25:26,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106824 states. [2020-10-28 10:25:28,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106824 to 104648. [2020-10-28 10:25:28,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104648 states. [2020-10-28 10:25:29,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104648 states to 104648 states and 118638 transitions. [2020-10-28 10:25:29,275 INFO L78 Accepts]: Start accepts. Automaton has 104648 states and 118638 transitions. Word has length 689 [2020-10-28 10:25:29,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:25:29,276 INFO L481 AbstractCegarLoop]: Abstraction has 104648 states and 118638 transitions. [2020-10-28 10:25:29,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:25:29,276 INFO L276 IsEmpty]: Start isEmpty. Operand 104648 states and 118638 transitions. [2020-10-28 10:25:29,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2020-10-28 10:25:29,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:25:29,366 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-28 10:25:29,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 10:25:29,366 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:25:29,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:25:29,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1715066007, now seen corresponding path program 1 times [2020-10-28 10:25:29,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:25:29,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883311840] [2020-10-28 10:25:29,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:25:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:29,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:29,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:30,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:30,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking...