/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/reducercommutativity/avg10-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:09:31,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:09:31,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:09:31,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:09:31,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:09:31,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:09:31,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:09:31,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:09:31,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:09:31,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:09:31,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:09:31,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:09:31,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:09:31,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:09:31,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:09:31,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:09:31,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:09:31,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:09:31,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:09:31,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:09:31,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:09:31,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:09:31,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:09:31,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:09:31,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:09:31,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:09:31,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:09:31,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:09:31,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:09:31,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:09:31,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:09:31,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:09:31,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:09:31,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:09:31,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:09:31,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:09:31,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:09:31,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:09:31,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:09:31,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:09:31,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:09:31,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:09:31,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:09:31,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:09:31,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:09:31,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:09:31,620 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:09:31,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:09:31,621 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:09:31,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:09:31,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:09:31,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:09:31,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:09:31,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:09:31,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:09:31,623 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:09:31,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:09:31,623 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:09:31,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:09:31,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:09:31,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:09:31,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:09:31,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:09:31,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:09:31,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:09:31,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:09:31,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:09:31,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:09:31,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:09:31,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:09:31,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:09:31,626 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:09:32,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:09:32,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:09:32,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:09:32,104 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:09:32,104 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:09:32,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg10-2.i [2020-10-27 04:09:32,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84f1170c9/01b9d382ec7945738e229fc12451544d/FLAGd41167734 [2020-10-27 04:09:32,854 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:09:32,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/avg10-2.i [2020-10-27 04:09:32,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84f1170c9/01b9d382ec7945738e229fc12451544d/FLAGd41167734 [2020-10-27 04:09:33,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84f1170c9/01b9d382ec7945738e229fc12451544d [2020-10-27 04:09:33,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:09:33,210 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:09:33,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:09:33,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:09:33,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:09:33,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:09:33" (1/1) ... [2020-10-27 04:09:33,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44275195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:33, skipping insertion in model container [2020-10-27 04:09:33,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:09:33" (1/1) ... [2020-10-27 04:09:33,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:09:33,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:09:33,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:09:33,452 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:09:33,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:09:33,512 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:09:33,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:33 WrapperNode [2020-10-27 04:09:33,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:09:33,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:09:33,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:09:33,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:09:33,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:33" (1/1) ... [2020-10-27 04:09:33,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:33" (1/1) ... [2020-10-27 04:09:33,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:33" (1/1) ... [2020-10-27 04:09:33,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:33" (1/1) ... [2020-10-27 04:09:33,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:33" (1/1) ... [2020-10-27 04:09:33,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:33" (1/1) ... [2020-10-27 04:09:33,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:33" (1/1) ... [2020-10-27 04:09:33,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:09:33,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:09:33,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:09:33,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:09:33,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:09:33,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:09:33,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:09:33,665 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:09:33,665 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2020-10-27 04:09:33,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:09:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:09:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:09:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 04:09:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 04:09:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:09:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:09:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 04:09:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2020-10-27 04:09:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:09:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:09:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:09:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:09:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:09:33,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:09:33,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:09:34,028 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:09:34,029 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 04:09:34,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:09:34 BoogieIcfgContainer [2020-10-27 04:09:34,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:09:34,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:09:34,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:09:34,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:09:34,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:09:33" (1/3) ... [2020-10-27 04:09:34,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f519900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:09:34, skipping insertion in model container [2020-10-27 04:09:34,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:33" (2/3) ... [2020-10-27 04:09:34,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f519900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:09:34, skipping insertion in model container [2020-10-27 04:09:34,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:09:34" (3/3) ... [2020-10-27 04:09:34,043 INFO L111 eAbstractionObserver]: Analyzing ICFG avg10-2.i [2020-10-27 04:09:34,056 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:09:34,065 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:09:34,098 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:09:34,172 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:09:34,172 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:09:34,173 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:09:34,173 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:09:34,173 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:09:34,173 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:09:34,173 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:09:34,173 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:09:34,193 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 04:09:34,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:09:34,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:34,201 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:34,202 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:34,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:34,209 INFO L82 PathProgramCache]: Analyzing trace with hash 585288593, now seen corresponding path program 1 times [2020-10-27 04:09:34,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:34,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135264033] [2020-10-27 04:09:34,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:34,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:34,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:34,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:34,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:34,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:35,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:36,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:36,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:09:36,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:09:36,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1771 [2020-10-27 04:09:36,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:36,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:36,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:09:36,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:36,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 04:09:36,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:36,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:36,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:36,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:36,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:36,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:09:36,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:36,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:36,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:36,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:36,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:09:36,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:09:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:36,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:36,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:36,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:36,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:09:36,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:09:36,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:09:36,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:09:36,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:36,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:09:36,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:09:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:36,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:36,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:36,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:36,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:09:36,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:09:36,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:09:36,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:36,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:36,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:09:36,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:36,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:36,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:09:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:36,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:36,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:36,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:36,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:09:36,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:09:36,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:09:36,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:36,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:36,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:09:36,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:36,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:09:36,358 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:09:36,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135264033] [2020-10-27 04:09:36,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:09:36,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 04:09:36,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237854473] [2020-10-27 04:09:36,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 04:09:36,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:36,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 04:09:36,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 04:09:36,385 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-27 04:09:36,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:36,490 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-27 04:09:36,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 04:09:36,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 04:09:36,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:36,501 INFO L225 Difference]: With dead ends: 60 [2020-10-27 04:09:36,501 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 04:09:36,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 04:09:36,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 04:09:36,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 04:09:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 04:09:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-27 04:09:36,552 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-27 04:09:36,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:36,552 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-27 04:09:36,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 04:09:36,553 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-27 04:09:36,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:09:36,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:36,555 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:36,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:09:36,556 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:36,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:36,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1339353745, now seen corresponding path program 1 times [2020-10-27 04:09:36,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:36,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416688078] [2020-10-27 04:09:36,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:36,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:36,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:36,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:36,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:36,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:37,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:38,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:38,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:09:38,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:09:38,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2089 [2020-10-27 04:09:38,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:38,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:09:38,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:09:38,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:09:38,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:38,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:38,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:38,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:38,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:38,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:38,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:09:38,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:38,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:38,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:09:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:38,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:38,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:38,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:09:38,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:09:38,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:09:38,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:38,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:09:38,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:38,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:09:38,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:09:38,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:09:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:38,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:38,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:38,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:38,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:09:38,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:09:38,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:09:38,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:38,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:09:38,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:09:38,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:09:38,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:09:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:38,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:38,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:38,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:38,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:09:38,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:09:38,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:09:38,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:09:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:09:38,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:09:38,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416688078] [2020-10-27 04:09:38,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:09:38,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:09:38,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7596052] [2020-10-27 04:09:38,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:09:38,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:38,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:09:38,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:09:38,847 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-10-27 04:09:39,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:39,017 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2020-10-27 04:09:39,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:09:39,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-27 04:09:39,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:39,019 INFO L225 Difference]: With dead ends: 52 [2020-10-27 04:09:39,019 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 04:09:39,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:09:39,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 04:09:39,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-27 04:09:39,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 04:09:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-27 04:09:39,031 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 34 [2020-10-27 04:09:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:39,031 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-27 04:09:39,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:09:39,031 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-27 04:09:39,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 04:09:39,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:39,033 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:39,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:09:39,034 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:39,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:39,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1648388849, now seen corresponding path program 1 times [2020-10-27 04:09:39,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:39,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129712335] [2020-10-27 04:09:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:39,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:39,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:39,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:39,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:39,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:44,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:44,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 04:09:44,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:09:44,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:09:44,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:44,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:09:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:09:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:09:44,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:44,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:44,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:44,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:44,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:44,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:44,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:09:44,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:44,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:44,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:44,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:44,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:44,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 04:09:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:44,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:44,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:44,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:44,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:09:44,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:09:44,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:09:44,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:44,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:09:44,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:44,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:09:44,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:09:44,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 04:09:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:44,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:44,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:44,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:44,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:09:44,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:09:44,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 04:09:44,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:09:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:09:44,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:44,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:09:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:44,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:44,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:44,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:44,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:09:44,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:09:44,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:09:44,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:44,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:09:44,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:44,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:09:44,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:44,281 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 04:09:44,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129712335] [2020-10-27 04:09:44,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:09:44,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 04:09:44,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837975037] [2020-10-27 04:09:44,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:09:44,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:44,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:09:44,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:09:44,284 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-10-27 04:09:44,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:44,439 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2020-10-27 04:09:44,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:09:44,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-27 04:09:44,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:44,441 INFO L225 Difference]: With dead ends: 57 [2020-10-27 04:09:44,441 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 04:09:44,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:09:44,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 04:09:44,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-27 04:09:44,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 04:09:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-27 04:09:44,450 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 42 [2020-10-27 04:09:44,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:44,451 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-27 04:09:44,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:09:44,451 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-27 04:09:44,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 04:09:44,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:44,453 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:44,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:09:44,453 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:44,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:44,454 INFO L82 PathProgramCache]: Analyzing trace with hash 60514641, now seen corresponding path program 2 times [2020-10-27 04:09:44,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:44,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344119337] [2020-10-27 04:09:44,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:44,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:44,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:44,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:44,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:46,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:49,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:49,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:09:49,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:09:49,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:09:49,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:09:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:09:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:09:49,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:49,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:49,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:49,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:49,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:49,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:09:49,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:49,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:49,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:09:49,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 04:09:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:49,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:49,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:49,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:49,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:09:49,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:09:49,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 04:09:49,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:49,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:09:49,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:49,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:09:49,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:49,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 04:09:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:49,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:49,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:49,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:49,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:09:49,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:09:49,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 04:09:49,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:49,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:09:49,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:49,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:09:49,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:49,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:09:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:49,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:49,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:49,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:49,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:09:49,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:09:49,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 04:09:49,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:09:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:49,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:09:49,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 04:09:49,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344119337] [2020-10-27 04:09:49,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:09:49,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 04:09:49,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929140147] [2020-10-27 04:09:49,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:09:49,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:49,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:09:49,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:09:49,749 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 9 states. [2020-10-27 04:09:49,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:49,983 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-10-27 04:09:49,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 04:09:49,984 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-10-27 04:09:49,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:49,985 INFO L225 Difference]: With dead ends: 63 [2020-10-27 04:09:49,985 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 04:09:49,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:09:49,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 04:09:49,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-27 04:09:49,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 04:09:49,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-27 04:09:49,994 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 50 [2020-10-27 04:09:49,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:49,994 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-27 04:09:49,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:09:49,994 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-27 04:09:49,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 04:09:49,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:49,996 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:49,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:09:49,996 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:49,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:49,997 INFO L82 PathProgramCache]: Analyzing trace with hash 2107559345, now seen corresponding path program 3 times [2020-10-27 04:09:49,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:49,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406047928] [2020-10-27 04:09:49,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:50,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:50,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:50,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:50,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:52,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:55,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:55,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 04:09:55,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:09:55,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:09:55,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:55,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:09:55,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:09:55,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:09:55,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:55,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:55,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:55,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:55,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:55,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:55,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:09:55,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:55,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:55,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:55,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:55,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:55,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 04:09:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:55,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:55,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:55,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:55,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:09:55,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:09:55,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 04:09:55,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:55,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:09:55,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:55,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:09:55,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:55,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 04:09:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:55,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:55,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:55,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:55,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:09:55,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:09:55,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 04:09:55,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:55,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:09:55,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:55,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:09:55,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:55,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:09:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:55,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:55,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:55,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:55,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:09:55,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:09:55,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 04:09:55,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:09:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:09:55,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:55,309 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 27 proven. 63 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 04:09:55,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406047928] [2020-10-27 04:09:55,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:09:55,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 04:09:55,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060509177] [2020-10-27 04:09:55,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:09:55,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:55,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:09:55,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:09:55,313 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 11 states. [2020-10-27 04:09:55,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:55,579 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-10-27 04:09:55,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 04:09:55,580 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-27 04:09:55,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:55,581 INFO L225 Difference]: With dead ends: 69 [2020-10-27 04:09:55,581 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 04:09:55,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:09:55,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 04:09:55,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-27 04:09:55,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 04:09:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-27 04:09:55,594 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 58 [2020-10-27 04:09:55,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:55,595 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-27 04:09:55,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:09:55,595 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-27 04:09:55,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 04:09:55,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:55,598 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:55,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:09:55,600 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:55,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:55,600 INFO L82 PathProgramCache]: Analyzing trace with hash -844910575, now seen corresponding path program 4 times [2020-10-27 04:09:55,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:55,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397589859] [2020-10-27 04:09:55,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:55,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:55,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:55,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:00,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:00,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 04:10:00,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:10:00,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:10:00,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:00,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:10:00,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:00,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:00,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:00,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:00,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:00,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:00,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:10:00,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:00,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:00,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 04:10:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:00,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:00,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:00,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:00,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:10:00,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:00,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 04:10:00,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:00,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:00,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:00,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:10:00,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:10:00,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 04:10:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:00,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:00,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:00,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:10:00,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:00,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 04:10:00,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:00,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:00,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:00,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:10:00,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:00,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:10:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:00,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:00,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:00,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:00,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:10:00,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:00,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 04:10:00,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:00,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:00,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:00,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:10:00,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:00,977 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 48 proven. 112 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 04:10:00,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397589859] [2020-10-27 04:10:00,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:00,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 04:10:00,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287312312] [2020-10-27 04:10:00,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:10:00,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:00,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:10:00,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:10:00,982 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 13 states. [2020-10-27 04:10:01,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:01,295 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2020-10-27 04:10:01,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:10:01,296 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-27 04:10:01,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:01,298 INFO L225 Difference]: With dead ends: 75 [2020-10-27 04:10:01,298 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 04:10:01,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:10:01,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 04:10:01,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-27 04:10:01,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 04:10:01,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-27 04:10:01,312 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 66 [2020-10-27 04:10:01,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:01,312 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-27 04:10:01,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:10:01,312 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-27 04:10:01,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 04:10:01,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:01,315 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:01,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:10:01,317 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:01,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:01,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1264383887, now seen corresponding path program 5 times [2020-10-27 04:10:01,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:01,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396217751] [2020-10-27 04:10:01,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:01,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:01,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:01,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:06,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:06,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:10:06,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:10:06,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 04:10:06,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:06,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:10:06,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:06,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:10:06,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:06,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:06,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:06,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:06,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:06,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:06,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:10:06,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:06,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:06,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 04:10:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:06,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:06,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:06,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:06,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:10:06,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:06,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 04:10:06,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:10:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:10:06,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:06,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:10:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:06,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:06,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:06,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:06,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:10:06,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:06,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 04:10:06,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:06,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:10:06,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:06,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:10:06,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:06,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:10:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:06,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:06,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:06,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:06,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:10:06,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:06,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 04:10:06,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:06,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:10:06,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:06,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:10:06,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 75 proven. 175 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 04:10:06,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396217751] [2020-10-27 04:10:06,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:06,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 04:10:06,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431589271] [2020-10-27 04:10:06,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:10:06,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:06,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:10:06,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:10:06,754 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 15 states. [2020-10-27 04:10:07,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:07,253 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-10-27 04:10:07,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:10:07,254 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2020-10-27 04:10:07,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:07,255 INFO L225 Difference]: With dead ends: 81 [2020-10-27 04:10:07,255 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 04:10:07,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:10:07,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 04:10:07,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-27 04:10:07,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 04:10:07,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-27 04:10:07,265 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 74 [2020-10-27 04:10:07,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:07,265 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-27 04:10:07,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:10:07,265 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-27 04:10:07,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 04:10:07,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:07,266 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:07,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:10:07,267 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:07,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:07,267 INFO L82 PathProgramCache]: Analyzing trace with hash -952772911, now seen corresponding path program 6 times [2020-10-27 04:10:07,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:07,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556497157] [2020-10-27 04:10:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:07,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:07,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:07,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:07,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:12,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:12,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 04:10:12,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:10:12,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:10:12,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:12,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:10:12,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:12,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:10:12,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:12,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:12,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:12,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:12,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:12,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:12,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:10:12,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:12,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:12,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:12,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:12,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:12,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 04:10:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:12,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:12,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:12,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:12,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:10:12,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:12,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 04:10:12,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:12,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:10:12,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:12,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:10:12,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:12,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:10:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:12,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:12,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:12,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:12,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:10:12,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:12,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 04:10:12,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:12,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:10:12,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:12,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:10:12,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:12,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:10:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:12,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:12,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:12,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:12,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:10:12,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:12,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 04:10:12,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:10:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:10:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 108 proven. 252 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 04:10:12,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556497157] [2020-10-27 04:10:12,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:12,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 04:10:12,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578727460] [2020-10-27 04:10:12,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 04:10:12,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:12,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 04:10:12,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-27 04:10:12,803 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 17 states. [2020-10-27 04:10:13,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:13,241 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2020-10-27 04:10:13,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 04:10:13,241 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 82 [2020-10-27 04:10:13,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:13,243 INFO L225 Difference]: With dead ends: 87 [2020-10-27 04:10:13,243 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 04:10:13,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:10:13,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 04:10:13,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-27 04:10:13,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 04:10:13,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-27 04:10:13,258 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 82 [2020-10-27 04:10:13,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:13,260 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-27 04:10:13,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 04:10:13,260 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-27 04:10:13,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 04:10:13,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:13,268 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:13,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:10:13,268 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:13,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:13,269 INFO L82 PathProgramCache]: Analyzing trace with hash 2106923825, now seen corresponding path program 7 times [2020-10-27 04:10:13,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:13,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305304619] [2020-10-27 04:10:13,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:13,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:13,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:13,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:13,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:18,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:18,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 04:10:18,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:10:18,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 04:10:18,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:10:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:10:18,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:18,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:18,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:18,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:18,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:18,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:18,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:10:18,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:18,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:18,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 04:10:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:18,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:18,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:18,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:18,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:10:18,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:18,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 04:10:18,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:10:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:10:18,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:18,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 04:10:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:18,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:18,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:18,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:18,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:10:18,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:18,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 04:10:18,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:18,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:10:18,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:10:18,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:18,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:10:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:18,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:18,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:18,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:18,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:10:18,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:18,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 04:10:18,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:10:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:10:18,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 147 proven. 343 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 04:10:18,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305304619] [2020-10-27 04:10:18,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:18,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 04:10:18,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434572038] [2020-10-27 04:10:18,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 04:10:18,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:18,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 04:10:18,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:10:18,849 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 19 states. [2020-10-27 04:10:19,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:19,296 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-10-27 04:10:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:10:19,298 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 90 [2020-10-27 04:10:19,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:19,299 INFO L225 Difference]: With dead ends: 93 [2020-10-27 04:10:19,299 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 04:10:19,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:10:19,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 04:10:19,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-27 04:10:19,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 04:10:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-10-27 04:10:19,314 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 90 [2020-10-27 04:10:19,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:19,315 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-10-27 04:10:19,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 04:10:19,315 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-10-27 04:10:19,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 04:10:19,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:19,318 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:19,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:10:19,318 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:19,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:19,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1134155153, now seen corresponding path program 8 times [2020-10-27 04:10:19,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:19,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056137698] [2020-10-27 04:10:19,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:19,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:19,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:24,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:24,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 04:10:24,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:10:24,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 04:10:24,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:24,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:10:24,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:24,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:10:24,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:24,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:24,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:24,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:24,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:24,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:24,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:10:24,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:24,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:24,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:10:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:24,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:24,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:24,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:24,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:10:24,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:24,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 04:10:24,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:10:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:10:24,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:24,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:10:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:24,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:24,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:24,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:24,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:10:24,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:24,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 04:10:24,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:10:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:10:24,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:24,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:10:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:24,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:24,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:24,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:24,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:10:24,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:24,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 04:10:24,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:24,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:10:24,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:24,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:10:24,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 192 proven. 448 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-27 04:10:24,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056137698] [2020-10-27 04:10:24,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:24,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 04:10:24,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317833587] [2020-10-27 04:10:24,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 04:10:24,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:24,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 04:10:24,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:10:24,910 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 21 states. [2020-10-27 04:10:25,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:25,482 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2020-10-27 04:10:25,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:10:25,483 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 98 [2020-10-27 04:10:25,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:25,484 INFO L225 Difference]: With dead ends: 99 [2020-10-27 04:10:25,484 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 04:10:25,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2020-10-27 04:10:25,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 04:10:25,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-10-27 04:10:25,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 04:10:25,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-10-27 04:10:25,499 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 98 [2020-10-27 04:10:25,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:25,499 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-10-27 04:10:25,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 04:10:25,500 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-10-27 04:10:25,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:10:25,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:25,501 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:25,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:10:25,501 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:25,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:25,502 INFO L82 PathProgramCache]: Analyzing trace with hash -2000878095, now seen corresponding path program 9 times [2020-10-27 04:10:25,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:25,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029193675] [2020-10-27 04:10:25,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:25,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:25,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:30,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:10:30,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:10:30,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 04:10:30,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:30,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:10:30,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:10:30,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:10:30,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:30,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:30,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:30,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:30,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:30,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:10:30,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:30,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:30,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:10:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:30,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:30,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:30,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:10:30,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:30,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-27 04:10:30,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:30,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:10:30,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:30,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:10:30,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:31,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:10:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:31,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:31,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:31,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:31,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:10:31,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:31,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 04:10:31,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:10:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:10:31,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:31,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:10:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:31,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:31,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:31,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:31,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:10:31,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:10:31,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 04:10:31,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:31,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:10:31,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:10:31,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:10:31,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 243 proven. 567 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 04:10:31,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029193675] [2020-10-27 04:10:31,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:31,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 04:10:31,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81278737] [2020-10-27 04:10:31,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 04:10:31,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:31,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 04:10:31,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:10:31,300 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 23 states. [2020-10-27 04:10:31,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:31,926 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2020-10-27 04:10:31,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 04:10:31,927 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 106 [2020-10-27 04:10:31,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:31,928 INFO L225 Difference]: With dead ends: 103 [2020-10-27 04:10:31,928 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 04:10:31,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:10:31,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 04:10:31,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-27 04:10:31,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 04:10:31,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-10-27 04:10:31,938 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 106 [2020-10-27 04:10:31,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:31,938 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-10-27 04:10:31,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 04:10:31,939 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-10-27 04:10:31,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:10:31,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:31,940 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:31,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:10:31,940 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:31,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:31,941 INFO L82 PathProgramCache]: Analyzing trace with hash -803754927, now seen corresponding path program 10 times [2020-10-27 04:10:31,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:31,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664507464] [2020-10-27 04:10:31,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:31,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:32,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:32,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 04:10:32,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:32,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-27 04:10:32,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:10:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:10:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:10:32,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:32,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:32,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:32,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:32,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:32,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:32,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:10:32,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:32,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:32,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:32,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:32,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:32,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:10:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:32,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:32,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:32,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:32,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:32,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:10:32,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:32,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:32,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:32,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:32,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:32,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:10:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:32,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:32,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:32,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:32,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:32,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:10:32,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:32,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:32,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:32,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:32,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:10:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:32,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:32,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:32,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:32,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:32,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:10:32,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:10:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:32,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:10:32,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664507464] [2020-10-27 04:10:32,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:10:32,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:10:32,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315840956] [2020-10-27 04:10:32,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:10:32,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:32,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:10:32,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:10:32,539 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 4 states. [2020-10-27 04:10:32,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:32,633 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-10-27 04:10:32,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 04:10:32,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-10-27 04:10:32,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:32,635 INFO L225 Difference]: With dead ends: 101 [2020-10-27 04:10:32,635 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 04:10:32,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:10:32,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 04:10:32,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-27 04:10:32,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 04:10:32,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-27 04:10:32,653 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 114 [2020-10-27 04:10:32,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:32,658 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-27 04:10:32,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:10:32,658 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-27 04:10:32,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 04:10:32,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:32,660 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:32,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:10:32,663 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:32,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:32,664 INFO L82 PathProgramCache]: Analyzing trace with hash -2122825265, now seen corresponding path program 1 times [2020-10-27 04:10:32,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:32,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573379283] [2020-10-27 04:10:32,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:32,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:33,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:33,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 04:10:33,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:33,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 804 [2020-10-27 04:10:33,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:33,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:10:33,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:10:33,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:10:33,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:33,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:33,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:33,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:33,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:33,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:10:33,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:33,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:33,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:33,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:33,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:33,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:10:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:33,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:33,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:33,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:33,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:33,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:10:33,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:33,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:33,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:33,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:33,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:33,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:10:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:33,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:33,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:33,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:33,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:33,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:10:33,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:33,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:33,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:33,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:33,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:33,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:10:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:33,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:33,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:33,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:33,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:33,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:10:33,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:10:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:33,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:10:33,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573379283] [2020-10-27 04:10:33,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:33,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 04:10:33,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404718457] [2020-10-27 04:10:33,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:10:33,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:33,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:10:33,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:10:33,624 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-10-27 04:10:33,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:33,716 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2020-10-27 04:10:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:10:33,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-27 04:10:33,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:33,718 INFO L225 Difference]: With dead ends: 103 [2020-10-27 04:10:33,718 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 04:10:33,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:10:33,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 04:10:33,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-27 04:10:33,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 04:10:33,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-27 04:10:33,729 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 116 [2020-10-27 04:10:33,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:33,729 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-27 04:10:33,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:10:33,730 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-27 04:10:33,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 04:10:33,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:33,731 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:33,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:10:33,732 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:33,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:33,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1560899533, now seen corresponding path program 2 times [2020-10-27 04:10:33,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:33,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034747045] [2020-10-27 04:10:33,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:33,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:34,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:34,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 04:10:34,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:34,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-27 04:10:34,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:34,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:10:34,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:10:34,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:10:34,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:34,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:34,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:34,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:34,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:34,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:34,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:10:34,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:34,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:34,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:34,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:10:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:34,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:34,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:34,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:34,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:34,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:10:34,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:34,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:34,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:34,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:34,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:34,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:10:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:34,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:34,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:34,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:34,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:34,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:10:34,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:34,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:34,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:34,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:34,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:34,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 04:10:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:34,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:34,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:34,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:34,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:34,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:10:34,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:34,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:34,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:10:34,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:34,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:10:34,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034747045] [2020-10-27 04:10:34,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:34,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 04:10:34,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921155158] [2020-10-27 04:10:34,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:10:34,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:34,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:10:34,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:10:34,427 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 6 states. [2020-10-27 04:10:34,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:34,534 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2020-10-27 04:10:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:10:34,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-27 04:10:34,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:34,537 INFO L225 Difference]: With dead ends: 105 [2020-10-27 04:10:34,537 INFO L226 Difference]: Without dead ends: 72 [2020-10-27 04:10:34,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:10:34,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-27 04:10:34,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-27 04:10:34,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-27 04:10:34,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-27 04:10:34,543 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 118 [2020-10-27 04:10:34,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:34,543 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-27 04:10:34,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:10:34,543 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-27 04:10:34,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 04:10:34,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:34,545 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:34,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:10:34,545 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:34,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:34,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1727588789, now seen corresponding path program 3 times [2020-10-27 04:10:34,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:34,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896110679] [2020-10-27 04:10:34,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:34,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:35,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:35,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 04:10:35,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:35,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-10-27 04:10:35,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:35,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:10:35,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:10:35,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:10:35,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:35,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:35,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:35,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:35,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:35,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:35,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:10:35,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:35,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:35,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:35,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:35,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:35,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:10:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:35,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:35,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:35,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:35,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:35,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:10:35,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:35,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:35,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:10:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:35,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:35,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:35,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:35,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:35,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:10:35,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:35,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:35,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:10:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:35,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:35,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:35,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:35,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:35,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:10:35,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:10:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:35,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:10:35,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896110679] [2020-10-27 04:10:35,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:35,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 04:10:35,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120436657] [2020-10-27 04:10:35,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:10:35,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:35,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:10:35,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:10:35,566 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 7 states. [2020-10-27 04:10:35,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:35,676 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-27 04:10:35,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:10:35,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-27 04:10:35,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:35,677 INFO L225 Difference]: With dead ends: 107 [2020-10-27 04:10:35,677 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 04:10:35,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:10:35,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 04:10:35,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-27 04:10:35,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-27 04:10:35,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-27 04:10:35,684 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 120 [2020-10-27 04:10:35,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:35,685 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-27 04:10:35,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:10:35,685 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-27 04:10:35,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 04:10:35,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:35,687 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:35,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:10:35,689 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:35,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:35,690 INFO L82 PathProgramCache]: Analyzing trace with hash -868936375, now seen corresponding path program 4 times [2020-10-27 04:10:35,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:35,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201636637] [2020-10-27 04:10:35,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:35,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:36,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 04:10:36,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:36,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1170 [2020-10-27 04:10:36,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:36,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:10:36,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:10:36,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:10:36,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:36,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:36,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:36,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:36,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:36,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:10:36,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:36,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:36,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:10:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:36,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:36,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:36,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:36,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:10:36,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:36,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:36,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:36,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:36,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:36,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:10:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:36,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:36,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:36,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:36,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:36,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:10:36,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:36,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:36,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:36,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:36,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:36,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 04:10:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:36,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:37,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:37,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:37,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:37,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:10:37,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:37,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:37,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:10:37,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:37,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:37,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:10:37,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201636637] [2020-10-27 04:10:37,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:37,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 04:10:37,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294077658] [2020-10-27 04:10:37,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:10:37,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:37,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:10:37,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:10:37,023 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 8 states. [2020-10-27 04:10:37,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:37,148 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2020-10-27 04:10:37,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:10:37,149 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-10-27 04:10:37,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:37,150 INFO L225 Difference]: With dead ends: 109 [2020-10-27 04:10:37,150 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 04:10:37,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:10:37,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 04:10:37,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-27 04:10:37,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-27 04:10:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-27 04:10:37,158 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 122 [2020-10-27 04:10:37,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:37,159 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-27 04:10:37,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:10:37,159 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-27 04:10:37,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 04:10:37,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:37,160 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:37,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:10:37,160 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:37,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:37,161 INFO L82 PathProgramCache]: Analyzing trace with hash -337687353, now seen corresponding path program 5 times [2020-10-27 04:10:37,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:37,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737217128] [2020-10-27 04:10:37,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:37,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:38,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:38,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 04:10:38,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:38,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1688 [2020-10-27 04:10:38,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:10:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:10:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:10:38,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:38,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:38,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:38,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:38,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:38,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:38,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:10:38,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:38,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:38,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:10:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:38,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:38,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:38,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:38,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:38,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:10:38,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:38,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:38,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:38,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:38,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:38,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:10:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:38,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:38,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:38,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:38,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:38,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:10:38,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:38,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:38,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:38,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:38,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:38,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 04:10:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:38,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:38,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:38,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:38,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:38,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:10:38,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:10:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:38,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:10:39,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737217128] [2020-10-27 04:10:39,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:39,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 04:10:39,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105815497] [2020-10-27 04:10:39,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:10:39,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:39,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:10:39,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:10:39,010 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 9 states. [2020-10-27 04:10:39,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:39,162 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-27 04:10:39,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 04:10:39,162 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2020-10-27 04:10:39,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:39,163 INFO L225 Difference]: With dead ends: 111 [2020-10-27 04:10:39,164 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 04:10:39,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:10:39,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 04:10:39,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-27 04:10:39,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-27 04:10:39,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-27 04:10:39,182 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-27 04:10:39,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:39,183 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-27 04:10:39,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:10:39,183 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-27 04:10:39,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 04:10:39,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:39,186 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:39,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:10:39,187 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:39,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:39,187 INFO L82 PathProgramCache]: Analyzing trace with hash -908485435, now seen corresponding path program 6 times [2020-10-27 04:10:39,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:39,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195747082] [2020-10-27 04:10:39,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:39,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:41,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:41,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 04:10:41,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:41,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2035 [2020-10-27 04:10:41,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:41,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:10:41,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:10:41,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:10:41,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:41,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:41,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:41,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:41,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:41,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:41,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:10:41,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:41,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:41,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:41,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:41,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:41,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:10:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:41,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:41,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:41,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:41,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:41,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:10:41,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:41,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:41,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:10:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:41,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:41,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:41,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:41,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:41,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:10:41,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:41,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:41,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:41,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:41,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:10:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:41,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:41,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:41,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:41,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:10:41,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:10:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:10:41,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195747082] [2020-10-27 04:10:41,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:41,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 04:10:41,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598527477] [2020-10-27 04:10:41,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:10:41,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:41,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:10:41,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:10:41,405 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 10 states. [2020-10-27 04:10:41,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:41,557 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2020-10-27 04:10:41,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 04:10:41,558 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 126 [2020-10-27 04:10:41,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:41,559 INFO L225 Difference]: With dead ends: 113 [2020-10-27 04:10:41,559 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 04:10:41,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:10:41,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 04:10:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-27 04:10:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 04:10:41,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-27 04:10:41,572 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-27 04:10:41,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:41,573 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-27 04:10:41,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:10:41,573 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-27 04:10:41,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 04:10:41,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:41,574 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:41,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:10:41,575 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:41,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:41,575 INFO L82 PathProgramCache]: Analyzing trace with hash 310371651, now seen corresponding path program 7 times [2020-10-27 04:10:41,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:41,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548211000] [2020-10-27 04:10:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:41,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:43,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:43,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 04:10:43,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:43,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2358 [2020-10-27 04:10:43,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:43,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:10:43,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:10:43,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:10:43,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:44,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:44,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:44,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:44,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:44,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:44,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:10:44,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:44,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:44,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:10:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:44,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:44,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:44,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:44,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:44,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:10:44,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:44,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:44,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:44,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:44,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:44,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:10:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:44,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:44,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:44,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:44,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:44,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:10:44,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:44,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:44,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 04:10:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:44,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:44,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:44,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:44,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:44,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:10:44,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:44,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:10:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:44,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:44,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:10:44,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548211000] [2020-10-27 04:10:44,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:44,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 04:10:44,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043071936] [2020-10-27 04:10:44,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:10:44,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:44,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:10:44,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:10:44,132 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 11 states. [2020-10-27 04:10:44,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:44,283 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-10-27 04:10:44,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 04:10:44,284 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 128 [2020-10-27 04:10:44,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:44,285 INFO L225 Difference]: With dead ends: 115 [2020-10-27 04:10:44,285 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 04:10:44,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:10:44,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 04:10:44,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-27 04:10:44,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 04:10:44,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-27 04:10:44,304 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2020-10-27 04:10:44,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:44,304 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-27 04:10:44,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:10:44,304 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-27 04:10:44,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 04:10:44,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:44,306 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:44,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 04:10:44,308 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:44,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:44,308 INFO L82 PathProgramCache]: Analyzing trace with hash -894040511, now seen corresponding path program 8 times [2020-10-27 04:10:44,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:44,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40833562] [2020-10-27 04:10:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:47,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 04:10:47,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:47,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3273 [2020-10-27 04:10:47,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:47,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:10:47,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 04:10:47,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:10:47,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:47,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:10:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:47,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:10:47,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:47,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:10:47,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:47,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:47,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:47,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:47,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:47,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:10:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:47,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:47,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:47,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:47,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:10:47,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:47,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:47,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:47,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:47,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:47,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:10:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:47,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:47,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:47,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:47,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:10:47,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:47,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:47,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 04:10:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:47,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:47,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:47,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:10:47,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:47,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:10:47,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:47,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:10:47,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 04:10:47,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:10:47,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-27 04:10:47,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40833562] [2020-10-27 04:10:47,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:47,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 04:10:47,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809703213] [2020-10-27 04:10:47,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:10:47,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:47,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:10:47,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:10:47,828 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 12 states. [2020-10-27 04:10:47,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:47,965 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2020-10-27 04:10:47,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 04:10:47,966 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-10-27 04:10:47,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:47,967 INFO L225 Difference]: With dead ends: 116 [2020-10-27 04:10:47,967 INFO L226 Difference]: Without dead ends: 83 [2020-10-27 04:10:47,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:10:47,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-27 04:10:47,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-27 04:10:47,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-27 04:10:47,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-27 04:10:47,975 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 130 [2020-10-27 04:10:47,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:47,975 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-27 04:10:47,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:10:47,975 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-27 04:10:47,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 04:10:47,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:47,976 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:47,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 04:10:47,977 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:47,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:47,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1307041727, now seen corresponding path program 9 times [2020-10-27 04:10:47,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:47,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724343297] [2020-10-27 04:10:47,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:48,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:57,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:57,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 04:10:57,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:57,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9395 [2020-10-27 04:10:57,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 92 [2020-10-27 04:10:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 04:10:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 04:10:57,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0