/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:34:23,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:34:23,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:34:23,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:34:23,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:34:23,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:34:23,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:34:23,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:34:23,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:34:23,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:34:23,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:34:23,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:34:23,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:34:23,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:34:23,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:34:23,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:34:23,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:34:23,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:34:23,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:34:23,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:34:23,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:34:23,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:34:23,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:34:23,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:34:23,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:34:23,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:34:23,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:34:23,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:34:23,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:34:23,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:34:23,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:34:23,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:34:23,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:34:23,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:34:23,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:34:23,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:34:23,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:34:23,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:34:23,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:34:23,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:34:23,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:34:23,667 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 18:34:23,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:34:23,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:34:23,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:34:23,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:34:23,723 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:34:23,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:34:23,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:34:23,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:34:23,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:34:23,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:34:23,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:34:23,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:34:23,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:34:23,725 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:34:23,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:34:23,726 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:34:23,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:34:23,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:34:23,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:34:23,727 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:34:23,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:34:23,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:34:23,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:34:23,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:34:23,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:34:23,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:34:23,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:34:23,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:34:23,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:34:23,728 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:34:24,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:34:24,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:34:24,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:34:24,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:34:24,195 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:34:24,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label01.c [2020-10-27 18:34:24,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e90fb6dde/7176ede58deb4da78bc4e9d92eb23519/FLAG5956fe056 [2020-10-27 18:34:25,113 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:34:25,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label01.c [2020-10-27 18:34:25,133 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e90fb6dde/7176ede58deb4da78bc4e9d92eb23519/FLAG5956fe056 [2020-10-27 18:34:25,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e90fb6dde/7176ede58deb4da78bc4e9d92eb23519 [2020-10-27 18:34:25,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:34:25,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:34:25,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:34:25,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:34:25,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:34:25,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:34:25" (1/1) ... [2020-10-27 18:34:25,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b374bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:25, skipping insertion in model container [2020-10-27 18:34:25,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:34:25" (1/1) ... [2020-10-27 18:34:25,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:34:25,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:34:26,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:34:26,165 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:34:26,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:34:26,514 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:34:26,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:26 WrapperNode [2020-10-27 18:34:26,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:34:26,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:34:26,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:34:26,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:34:26,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:26" (1/1) ... [2020-10-27 18:34:26,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:26" (1/1) ... [2020-10-27 18:34:26,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:26" (1/1) ... [2020-10-27 18:34:26,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:26" (1/1) ... [2020-10-27 18:34:26,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:26" (1/1) ... [2020-10-27 18:34:26,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:26" (1/1) ... [2020-10-27 18:34:26,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:26" (1/1) ... [2020-10-27 18:34:26,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:34:26,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:34:26,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:34:26,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:34:26,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:26" (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 18:34:26,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:34:26,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:34:26,804 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:34:26,804 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:34:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:34:26,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:34:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:34:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:34:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:34:26,806 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:34:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:34:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:34:26,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:34:26,808 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:34:26,808 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:34:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:34:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:34:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:34:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:34:26,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:34:26,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:34:29,354 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:34:29,354 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:34:29,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:34:29 BoogieIcfgContainer [2020-10-27 18:34:29,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:34:29,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:34:29,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:34:29,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:34:29,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:34:25" (1/3) ... [2020-10-27 18:34:29,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b09bb84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:34:29, skipping insertion in model container [2020-10-27 18:34:29,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:26" (2/3) ... [2020-10-27 18:34:29,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b09bb84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:34:29, skipping insertion in model container [2020-10-27 18:34:29,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:34:29" (3/3) ... [2020-10-27 18:34:29,366 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label01.c [2020-10-27 18:34:29,378 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:34:29,383 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:34:29,398 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:34:29,427 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:34:29,428 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:34:29,428 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:34:29,428 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:34:29,428 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:34:29,428 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:34:29,428 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:34:29,429 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:34:29,456 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 18:34:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 18:34:29,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:34:29,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:34:29,465 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:34:29,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:34:29,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1434778076, now seen corresponding path program 1 times [2020-10-27 18:34:29,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:34:29,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201020276] [2020-10-27 18:34:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:34:29,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:29,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:30,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:30,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 18:34:30,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:30,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-27 18:34:30,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:30,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:34:30,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:34:30,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 18:34:30,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:34:30,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:34:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:30,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:30,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:30,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:34:30,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:34:30,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:34:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:34:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:30,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:34:30,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201020276] [2020-10-27 18:34:30,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:34:30,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:34:30,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032240313] [2020-10-27 18:34:30,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:34:30,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:34:30,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:34:30,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:34:30,498 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-27 18:34:35,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:34:35,024 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-27 18:34:35,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:34:35,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-27 18:34:35,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:34:35,047 INFO L225 Difference]: With dead ends: 1174 [2020-10-27 18:34:35,047 INFO L226 Difference]: Without dead ends: 697 [2020-10-27 18:34:35,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:34:35,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-27 18:34:35,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-27 18:34:35,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-27 18:34:35,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-27 18:34:35,191 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 33 [2020-10-27 18:34:35,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:34:35,192 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-27 18:34:35,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:34:35,192 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-27 18:34:35,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 18:34:35,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:34:35,202 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:34:35,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:34:35,202 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:34:35,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:34:35,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1161169853, now seen corresponding path program 1 times [2020-10-27 18:34:35,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:34:35,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793309806] [2020-10-27 18:34:35,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:34:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:35,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:35,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:36,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:36,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 18:34:36,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:34:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1173 [2020-10-27 18:34:36,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:34:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 18:34:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 18:34:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:34:36,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:34:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:36,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:36,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:36,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:34:36,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:36,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:34:36,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:36,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:34:36,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:36,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:34:36,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:36,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:34:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:36,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:36,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:36,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:34:36,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:36,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 18:34:36,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:34:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:34:36,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:36,771 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:34:36,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793309806] [2020-10-27 18:34:36,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:34:36,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:34:36,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588598937] [2020-10-27 18:34:36,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:34:36,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:34:36,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:34:36,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:34:36,779 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 5 states. [2020-10-27 18:34:41,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:34:41,399 INFO L93 Difference]: Finished difference Result 2065 states and 3054 transitions. [2020-10-27 18:34:41,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:34:41,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-27 18:34:41,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:34:41,414 INFO L225 Difference]: With dead ends: 2065 [2020-10-27 18:34:41,414 INFO L226 Difference]: Without dead ends: 1378 [2020-10-27 18:34:41,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:34:41,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2020-10-27 18:34:41,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1374. [2020-10-27 18:34:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1374 states. [2020-10-27 18:34:41,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1867 transitions. [2020-10-27 18:34:41,504 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1867 transitions. Word has length 109 [2020-10-27 18:34:41,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:34:41,505 INFO L481 AbstractCegarLoop]: Abstraction has 1374 states and 1867 transitions. [2020-10-27 18:34:41,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:34:41,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1867 transitions. [2020-10-27 18:34:41,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 18:34:41,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:34:41,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:34:41,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:34:41,509 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:34:41,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:34:41,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1846997429, now seen corresponding path program 1 times [2020-10-27 18:34:41,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:34:41,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747079878] [2020-10-27 18:34:41,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:34:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:41,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:41,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:41,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:34:41,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:41,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-27 18:34:41,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:34:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 18:34:41,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 18:34:41,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:41,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:34:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:41,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:41,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:41,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:34:41,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:41,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:34:41,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:41,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:34:41,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:41,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:34:41,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:41,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:34:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:41,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:42,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:42,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:34:42,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:42,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 18:34:42,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:42,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:34:42,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:42,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:34:42,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:34:42,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747079878] [2020-10-27 18:34:42,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:34:42,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:34:42,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681672712] [2020-10-27 18:34:42,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:34:42,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:34:42,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:34:42,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:34:42,140 INFO L87 Difference]: Start difference. First operand 1374 states and 1867 transitions. Second operand 5 states. [2020-10-27 18:34:46,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:34:46,719 INFO L93 Difference]: Finished difference Result 3427 states and 4770 transitions. [2020-10-27 18:34:46,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:34:46,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-27 18:34:46,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:34:46,736 INFO L225 Difference]: With dead ends: 3427 [2020-10-27 18:34:46,736 INFO L226 Difference]: Without dead ends: 2059 [2020-10-27 18:34:46,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:34:46,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2020-10-27 18:34:46,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1374. [2020-10-27 18:34:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1374 states. [2020-10-27 18:34:46,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1867 transitions. [2020-10-27 18:34:46,811 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1867 transitions. Word has length 124 [2020-10-27 18:34:46,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:34:46,812 INFO L481 AbstractCegarLoop]: Abstraction has 1374 states and 1867 transitions. [2020-10-27 18:34:46,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:34:46,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1867 transitions. [2020-10-27 18:34:46,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 18:34:46,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:34:46,825 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:34:46,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:34:46,826 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:34:46,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:34:46,829 INFO L82 PathProgramCache]: Analyzing trace with hash -2072228767, now seen corresponding path program 1 times [2020-10-27 18:34:46,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:34:46,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394716486] [2020-10-27 18:34:46,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:34:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:46,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:47,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:47,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:47,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:47,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 18:34:47,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:34:47,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 794 [2020-10-27 18:34:47,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:47,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:34:47,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-27 18:34:47,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 18:34:47,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 18:34:47,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:34:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:47,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:47,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:47,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:34:47,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:47,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 18:34:47,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:47,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:34:47,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:47,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:34:47,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:47,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:34:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:47,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:47,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:47,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 18:34:47,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:47,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 18:34:47,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:47,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:34:47,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:47,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 18:34:47,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:34:47,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394716486] [2020-10-27 18:34:47,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:34:47,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:34:47,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457596460] [2020-10-27 18:34:47,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:34:47,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:34:47,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:34:47,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:34:47,977 INFO L87 Difference]: Start difference. First operand 1374 states and 1867 transitions. Second operand 5 states. [2020-10-27 18:34:52,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:34:52,681 INFO L93 Difference]: Finished difference Result 3427 states and 4773 transitions. [2020-10-27 18:34:52,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:34:52,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-27 18:34:52,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:34:52,692 INFO L225 Difference]: With dead ends: 3427 [2020-10-27 18:34:52,692 INFO L226 Difference]: Without dead ends: 2059 [2020-10-27 18:34:52,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:34:52,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2020-10-27 18:34:52,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 2055. [2020-10-27 18:34:52,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2055 states. [2020-10-27 18:34:52,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 2728 transitions. [2020-10-27 18:34:52,762 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 2728 transitions. Word has length 127 [2020-10-27 18:34:52,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:34:52,762 INFO L481 AbstractCegarLoop]: Abstraction has 2055 states and 2728 transitions. [2020-10-27 18:34:52,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:34:52,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 2728 transitions. [2020-10-27 18:34:52,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 18:34:52,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:34:52,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:34:52,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:34:52,766 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:34:52,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:34:52,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1677790207, now seen corresponding path program 1 times [2020-10-27 18:34:52,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:34:52,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049206251] [2020-10-27 18:34:52,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:34:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:52,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:52,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:54,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:54,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 18:34:54,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:34:54,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1329 [2020-10-27 18:34:54,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:54,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:34:54,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-27 18:34:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 18:34:54,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:54,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:34:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:54,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:54,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:54,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:34:54,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:54,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:34:54,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:34:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:34:54,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:54,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:34:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:54,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:54,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:54,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 18:34:54,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:54,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 18:34:54,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:34:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 18:34:54,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:34:54,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049206251] [2020-10-27 18:34:54,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:34:54,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:34:54,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198213174] [2020-10-27 18:34:54,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:34:54,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:34:54,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:34:54,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:34:54,568 INFO L87 Difference]: Start difference. First operand 2055 states and 2728 transitions. Second operand 5 states. [2020-10-27 18:34:59,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:34:59,206 INFO L93 Difference]: Finished difference Result 5467 states and 7472 transitions. [2020-10-27 18:34:59,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:34:59,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-27 18:34:59,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:34:59,226 INFO L225 Difference]: With dead ends: 5467 [2020-10-27 18:34:59,226 INFO L226 Difference]: Without dead ends: 3418 [2020-10-27 18:34:59,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:34:59,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2020-10-27 18:34:59,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 3414. [2020-10-27 18:34:59,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3414 states. [2020-10-27 18:34:59,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3414 states to 3414 states and 4296 transitions. [2020-10-27 18:34:59,332 INFO L78 Accepts]: Start accepts. Automaton has 3414 states and 4296 transitions. Word has length 162 [2020-10-27 18:34:59,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:34:59,333 INFO L481 AbstractCegarLoop]: Abstraction has 3414 states and 4296 transitions. [2020-10-27 18:34:59,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:34:59,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3414 states and 4296 transitions. [2020-10-27 18:34:59,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 18:34:59,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:34:59,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:34:59,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:34:59,337 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:34:59,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:34:59,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1725114949, now seen corresponding path program 1 times [2020-10-27 18:34:59,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:34:59,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087250673] [2020-10-27 18:34:59,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:34:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:59,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:59,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:00,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:00,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-27 18:35:00,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:35:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1097 [2020-10-27 18:35:00,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:35:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-27 18:35:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 18:35:00,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:00,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:35:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:00,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:00,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:00,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:35:00,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:00,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:35:00,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:00,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:00,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:35:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:00,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:00,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:00,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 18:35:00,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:00,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 18:35:00,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:00,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:35:00,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-27 18:35:00,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:00,845 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:35:00,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087250673] [2020-10-27 18:35:00,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:35:00,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:35:00,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070885860] [2020-10-27 18:35:00,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:35:00,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:35:00,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:35:00,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:35:00,848 INFO L87 Difference]: Start difference. First operand 3414 states and 4296 transitions. Second operand 5 states. [2020-10-27 18:35:05,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:35:05,706 INFO L93 Difference]: Finished difference Result 8188 states and 10622 transitions. [2020-10-27 18:35:05,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:35:05,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-27 18:35:05,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:35:05,738 INFO L225 Difference]: With dead ends: 8188 [2020-10-27 18:35:05,738 INFO L226 Difference]: Without dead ends: 4780 [2020-10-27 18:35:05,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:35:05,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4780 states. [2020-10-27 18:35:05,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4780 to 4776. [2020-10-27 18:35:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4776 states. [2020-10-27 18:35:05,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4776 states to 4776 states and 5885 transitions. [2020-10-27 18:35:05,878 INFO L78 Accepts]: Start accepts. Automaton has 4776 states and 5885 transitions. Word has length 196 [2020-10-27 18:35:05,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:35:05,879 INFO L481 AbstractCegarLoop]: Abstraction has 4776 states and 5885 transitions. [2020-10-27 18:35:05,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:35:05,879 INFO L276 IsEmpty]: Start isEmpty. Operand 4776 states and 5885 transitions. [2020-10-27 18:35:05,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-27 18:35:05,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:35:05,883 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:35:05,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:35:05,883 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:35:05,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:35:05,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1599355528, now seen corresponding path program 1 times [2020-10-27 18:35:05,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:35:05,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735839151] [2020-10-27 18:35:05,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:35:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:05,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:06,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:07,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:10,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:10,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:35:10,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:35:10,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4240 [2020-10-27 18:35:10,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:10,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:35:10,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-27 18:35:10,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 18:35:10,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:10,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:35:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:10,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:10,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:10,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:35:10,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:10,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:35:10,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:10,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:10,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:35:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:10,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:10,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:10,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:35:10,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:10,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:35:10,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:10,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:10,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:10,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:10,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:35:10,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 18:35:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:10,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:10,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:10,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 18:35:10,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:10,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 18:35:10,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:35:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 18:35:10,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:35:10,493 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 18:35:10,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735839151] [2020-10-27 18:35:10,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:35:10,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:35:10,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146308083] [2020-10-27 18:35:10,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:35:10,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:35:10,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:35:10,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:35:10,497 INFO L87 Difference]: Start difference. First operand 4776 states and 5885 transitions. Second operand 5 states. [2020-10-27 18:35:15,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:35:15,521 INFO L93 Difference]: Finished difference Result 11248 states and 14275 transitions. [2020-10-27 18:35:15,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:35:15,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-27 18:35:15,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:35:15,554 INFO L225 Difference]: With dead ends: 11248 [2020-10-27 18:35:15,554 INFO L226 Difference]: Without dead ends: 6478 [2020-10-27 18:35:15,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:35:15,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6478 states. [2020-10-27 18:35:15,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6478 to 6474. [2020-10-27 18:35:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6474 states. [2020-10-27 18:35:15,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6474 states to 6474 states and 7828 transitions. [2020-10-27 18:35:15,734 INFO L78 Accepts]: Start accepts. Automaton has 6474 states and 7828 transitions. Word has length 202 [2020-10-27 18:35:15,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:35:15,735 INFO L481 AbstractCegarLoop]: Abstraction has 6474 states and 7828 transitions. [2020-10-27 18:35:15,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:35:15,735 INFO L276 IsEmpty]: Start isEmpty. Operand 6474 states and 7828 transitions. [2020-10-27 18:35:15,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-27 18:35:15,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:35:15,740 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:15,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:35:15,740 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:35:15,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:35:15,741 INFO L82 PathProgramCache]: Analyzing trace with hash -444123539, now seen corresponding path program 1 times [2020-10-27 18:35:15,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:35:15,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369925916] [2020-10-27 18:35:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:35:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:15,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:16,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:16,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-27 18:35:16,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:16,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-27 18:35:16,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:16,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:35:16,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:35:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-27 18:35:16,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:16,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:35:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:16,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:16,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:16,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:35:16,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:16,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:35:16,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:16,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:35:16,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:16,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:35:16,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:16,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:35:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:16,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:16,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:16,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 18:35:16,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-27 18:35:16,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:35:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:35:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-27 18:35:16,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:35:16,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369925916] [2020-10-27 18:35:16,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:35:16,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 18:35:16,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730212809] [2020-10-27 18:35:16,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:35:16,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:35:16,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:35:16,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:35:16,892 INFO L87 Difference]: Start difference. First operand 6474 states and 7828 transitions. Second operand 7 states. [2020-10-27 18:35:22,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:35:22,290 INFO L93 Difference]: Finished difference Result 14722 states and 18428 transitions. [2020-10-27 18:35:22,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:35:22,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-10-27 18:35:22,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:35:22,342 INFO L225 Difference]: With dead ends: 14722 [2020-10-27 18:35:22,342 INFO L226 Difference]: Without dead ends: 8254 [2020-10-27 18:35:22,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:35:22,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8254 states. [2020-10-27 18:35:22,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8254 to 8228. [2020-10-27 18:35:22,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8228 states. [2020-10-27 18:35:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8228 states to 8228 states and 9902 transitions. [2020-10-27 18:35:22,570 INFO L78 Accepts]: Start accepts. Automaton has 8228 states and 9902 transitions. Word has length 216 [2020-10-27 18:35:22,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:35:22,570 INFO L481 AbstractCegarLoop]: Abstraction has 8228 states and 9902 transitions. [2020-10-27 18:35:22,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:35:22,571 INFO L276 IsEmpty]: Start isEmpty. Operand 8228 states and 9902 transitions. [2020-10-27 18:35:22,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-27 18:35:22,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:35:22,577 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:22,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:35:22,577 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:35:22,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:35:22,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1952453685, now seen corresponding path program 1 times [2020-10-27 18:35:22,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:35:22,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039112830] [2020-10-27 18:35:22,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:35:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:22,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:23,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:24,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:24,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-27 18:35:24,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:35:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1914 [2020-10-27 18:35:24,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:24,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 18:35:24,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:35:24,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-27 18:35:24,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:35:24,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:35:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:24,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:24,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:24,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:35:24,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:24,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 18:35:24,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:35:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:35:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:24,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:35:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:24,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:25,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:25,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-27 18:35:25,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:35:25,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1080 [2020-10-27 18:35:25,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:25,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:35:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:35:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-27 18:35:25,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:26,970 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:35:26,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039112830] [2020-10-27 18:35:26,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:35:26,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 18:35:26,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330801807] [2020-10-27 18:35:26,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:35:26,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:35:26,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:35:26,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:35:26,973 INFO L87 Difference]: Start difference. First operand 8228 states and 9902 transitions. Second operand 8 states. [2020-10-27 18:35:32,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:35:32,409 INFO L93 Difference]: Finished difference Result 16938 states and 20764 transitions. [2020-10-27 18:35:32,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:35:32,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 297 [2020-10-27 18:35:32,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:35:32,442 INFO L225 Difference]: With dead ends: 16938 [2020-10-27 18:35:32,443 INFO L226 Difference]: Without dead ends: 8716 [2020-10-27 18:35:32,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:35:32,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8716 states. [2020-10-27 18:35:32,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8716 to 8609. [2020-10-27 18:35:32,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8609 states. [2020-10-27 18:35:32,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8609 states to 8609 states and 10342 transitions. [2020-10-27 18:35:32,692 INFO L78 Accepts]: Start accepts. Automaton has 8609 states and 10342 transitions. Word has length 297 [2020-10-27 18:35:32,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:35:32,693 INFO L481 AbstractCegarLoop]: Abstraction has 8609 states and 10342 transitions. [2020-10-27 18:35:32,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:35:32,693 INFO L276 IsEmpty]: Start isEmpty. Operand 8609 states and 10342 transitions. [2020-10-27 18:35:32,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-27 18:35:32,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:35:32,702 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:35:32,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:35:32,703 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:35:32,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:35:32,703 INFO L82 PathProgramCache]: Analyzing trace with hash -926026543, now seen corresponding path program 1 times [2020-10-27 18:35:32,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:35:32,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973502179] [2020-10-27 18:35:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:35:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:32,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:32,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:32,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:34,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:35,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:37,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:37,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-27 18:35:37,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:35:37,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 18:35:37,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:35:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-27 18:35:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-27 18:35:37,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:37,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:35:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:37,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:37,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:37,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:35:37,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:37,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:35:37,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:37,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:37,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:35:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:37,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:37,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:37,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:35:37,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:37,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:35:37,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:37,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:37,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:37,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:37,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:37,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:35:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:38,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:38,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:38,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 18:35:38,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:38,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 18:35:38,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:38,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:35:38,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:38,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 18:35:38,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:38,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-27 18:35:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:38,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:38,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:38,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 18:35:38,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:38,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-27 18:35:38,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:35:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:35:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 18:35:38,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-27 18:35:38,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973502179] [2020-10-27 18:35:38,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:35:38,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:35:38,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843774523] [2020-10-27 18:35:38,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:35:38,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:35:38,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:35:38,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:35:38,656 INFO L87 Difference]: Start difference. First operand 8609 states and 10342 transitions. Second operand 7 states. [2020-10-27 18:35:44,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:35:44,643 INFO L93 Difference]: Finished difference Result 20037 states and 25003 transitions. [2020-10-27 18:35:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:35:44,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 380 [2020-10-27 18:35:44,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:35:44,686 INFO L225 Difference]: With dead ends: 20037 [2020-10-27 18:35:44,686 INFO L226 Difference]: Without dead ends: 11771 [2020-10-27 18:35:44,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:35:44,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11771 states. [2020-10-27 18:35:44,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11771 to 11687. [2020-10-27 18:35:44,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11687 states. [2020-10-27 18:35:45,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11687 states to 11687 states and 13818 transitions. [2020-10-27 18:35:45,016 INFO L78 Accepts]: Start accepts. Automaton has 11687 states and 13818 transitions. Word has length 380 [2020-10-27 18:35:45,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:35:45,017 INFO L481 AbstractCegarLoop]: Abstraction has 11687 states and 13818 transitions. [2020-10-27 18:35:45,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:35:45,017 INFO L276 IsEmpty]: Start isEmpty. Operand 11687 states and 13818 transitions. [2020-10-27 18:35:45,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2020-10-27 18:35:45,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:35:45,033 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:35:45,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:35:45,034 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:35:45,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:35:45,034 INFO L82 PathProgramCache]: Analyzing trace with hash 937817164, now seen corresponding path program 1 times [2020-10-27 18:35:45,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:35:45,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153774399] [2020-10-27 18:35:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:35:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:45,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:45,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:47,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:47,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 469 [2020-10-27 18:35:47,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:35:47,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2346 [2020-10-27 18:35:47,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:47,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:35:47,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 18:35:47,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 18:35:47,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:47,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:35:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:47,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:47,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:47,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:35:47,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:47,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:35:47,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:47,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:47,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:47,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:47,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:47,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:35:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:47,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:47,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:47,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 18:35:47,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:47,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-27 18:35:47,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:47,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:35:47,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:47,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 18:35:47,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:47,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 18:35:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:48,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:48,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:48,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 18:35:48,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:48,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-27 18:35:48,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:35:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:35:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-27 18:35:48,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:48,716 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 203 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:35:48,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153774399] [2020-10-27 18:35:48,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:35:48,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:35:48,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716142898] [2020-10-27 18:35:48,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:35:48,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:35:48,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:35:48,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:35:48,719 INFO L87 Difference]: Start difference. First operand 11687 states and 13818 transitions. Second operand 8 states. [2020-10-27 18:35:49,694 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-27 18:35:57,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:35:57,954 INFO L93 Difference]: Finished difference Result 26918 states and 32964 transitions. [2020-10-27 18:35:57,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 18:35:57,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 455 [2020-10-27 18:35:57,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:35:58,004 INFO L225 Difference]: With dead ends: 26918 [2020-10-27 18:35:58,004 INFO L226 Difference]: Without dead ends: 15574 [2020-10-27 18:35:58,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:35:58,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15574 states. [2020-10-27 18:35:58,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15574 to 15546. [2020-10-27 18:35:58,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15546 states. [2020-10-27 18:35:58,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15546 states to 15546 states and 19043 transitions. [2020-10-27 18:35:58,359 INFO L78 Accepts]: Start accepts. Automaton has 15546 states and 19043 transitions. Word has length 455 [2020-10-27 18:35:58,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:35:58,360 INFO L481 AbstractCegarLoop]: Abstraction has 15546 states and 19043 transitions. [2020-10-27 18:35:58,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:35:58,360 INFO L276 IsEmpty]: Start isEmpty. Operand 15546 states and 19043 transitions. [2020-10-27 18:35:58,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2020-10-27 18:35:58,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:35:58,377 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:58,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:35:58,378 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:35:58,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:35:58,379 INFO L82 PathProgramCache]: Analyzing trace with hash 412704273, now seen corresponding path program 1 times [2020-10-27 18:35:58,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:35:58,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567549683] [2020-10-27 18:35:58,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:35:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:58,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:58,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:59,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:59,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:00,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:00,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:03,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:03,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:03,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-27 18:36:03,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:36:03,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 18:36:03,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:03,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:03,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 437 [2020-10-27 18:36:03,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 18:36:03,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:03,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:03,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:03,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:03,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:03,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:03,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:36:03,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:03,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:03,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:03,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:03,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:03,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:03,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:36:03,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:03,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:36:03,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:03,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:03,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:03,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:03,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:03,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:36:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:03,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:03,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:03,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:36:03,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:03,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 18:36:03,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:03,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-27 18:36:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:03,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:03,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:03,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:36:03,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:03,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 18:36:03,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 18:36:03,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 78 proven. 3 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2020-10-27 18:36:04,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567549683] [2020-10-27 18:36:04,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:04,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:36:04,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025229640] [2020-10-27 18:36:04,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:36:04,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:04,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:36:04,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:36:04,064 INFO L87 Difference]: Start difference. First operand 15546 states and 19043 transitions. Second operand 5 states. [2020-10-27 18:36:09,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:36:09,690 INFO L93 Difference]: Finished difference Result 36179 states and 45287 transitions. [2020-10-27 18:36:09,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:36:09,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 456 [2020-10-27 18:36:09,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:36:09,756 INFO L225 Difference]: With dead ends: 36179 [2020-10-27 18:36:09,756 INFO L226 Difference]: Without dead ends: 20976 [2020-10-27 18:36:09,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:36:09,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20976 states. [2020-10-27 18:36:10,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20976 to 20976. [2020-10-27 18:36:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20976 states. [2020-10-27 18:36:10,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20976 states to 20976 states and 25690 transitions. [2020-10-27 18:36:10,223 INFO L78 Accepts]: Start accepts. Automaton has 20976 states and 25690 transitions. Word has length 456 [2020-10-27 18:36:10,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:36:10,224 INFO L481 AbstractCegarLoop]: Abstraction has 20976 states and 25690 transitions. [2020-10-27 18:36:10,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:36:10,224 INFO L276 IsEmpty]: Start isEmpty. Operand 20976 states and 25690 transitions. [2020-10-27 18:36:10,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-10-27 18:36:10,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:10,236 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:36:10,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:36:10,237 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:10,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:10,241 INFO L82 PathProgramCache]: Analyzing trace with hash 107965277, now seen corresponding path program 1 times [2020-10-27 18:36:10,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:10,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293111675] [2020-10-27 18:36:10,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:10,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:10,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:11,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:12,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:15,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:15,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 474 [2020-10-27 18:36:15,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:36:15,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 18:36:15,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 436 [2020-10-27 18:36:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 18:36:15,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:15,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:15,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:15,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:15,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:15,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:15,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:36:15,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:15,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:15,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:15,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:15,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:15,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:15,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:15,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:15,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:36:15,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:15,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:36:15,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:15,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:15,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:15,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:36:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:15,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:15,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:15,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-27 18:36:15,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-27 18:36:15,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 328 [2020-10-27 18:36:15,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:15,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:36:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:15,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:15,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:15,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 18:36:15,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:15,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 18:36:15,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:15,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:15,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:15,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 18:36:15,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:16,201 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-27 18:36:16,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293111675] [2020-10-27 18:36:16,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:16,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:36:16,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359376197] [2020-10-27 18:36:16,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:36:16,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:16,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:36:16,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:36:16,204 INFO L87 Difference]: Start difference. First operand 20976 states and 25690 transitions. Second operand 6 states. [2020-10-27 18:36:21,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:36:21,337 INFO L93 Difference]: Finished difference Result 46659 states and 57428 transitions. [2020-10-27 18:36:21,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:36:21,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 458 [2020-10-27 18:36:21,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:36:21,407 INFO L225 Difference]: With dead ends: 46659 [2020-10-27 18:36:21,407 INFO L226 Difference]: Without dead ends: 26026 [2020-10-27 18:36:21,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:36:21,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26026 states. [2020-10-27 18:36:21,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26026 to 25687. [2020-10-27 18:36:21,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25687 states. [2020-10-27 18:36:21,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25687 states to 25687 states and 30924 transitions. [2020-10-27 18:36:21,926 INFO L78 Accepts]: Start accepts. Automaton has 25687 states and 30924 transitions. Word has length 458 [2020-10-27 18:36:21,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:36:21,927 INFO L481 AbstractCegarLoop]: Abstraction has 25687 states and 30924 transitions. [2020-10-27 18:36:21,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:36:21,927 INFO L276 IsEmpty]: Start isEmpty. Operand 25687 states and 30924 transitions. [2020-10-27 18:36:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-27 18:36:21,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:21,947 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:36:21,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:36:21,947 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:21,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:21,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1088452519, now seen corresponding path program 1 times [2020-10-27 18:36:21,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:21,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641958918] [2020-10-27 18:36:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:22,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:22,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:22,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:23,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:24,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:24,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 517 [2020-10-27 18:36:24,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:36:24,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2956 [2020-10-27 18:36:24,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 369 [2020-10-27 18:36:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-27 18:36:24,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:25,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:25,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:25,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:25,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:25,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:25,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:36:25,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:25,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:25,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:25,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:25,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:25,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:36:25,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:25,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:36:25,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:25,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:25,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:36:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:25,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:25,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:25,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-27 18:36:25,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:25,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 18:36:25,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:25,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:25,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:25,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 261 [2020-10-27 18:36:25,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:25,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-27 18:36:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:25,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:25,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:25,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 18:36:25,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:25,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 18:36:25,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:36:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 18:36:25,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-27 18:36:25,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641958918] [2020-10-27 18:36:25,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:25,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:36:25,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376399983] [2020-10-27 18:36:25,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:36:25,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:25,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:36:25,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:36:25,750 INFO L87 Difference]: Start difference. First operand 25687 states and 30924 transitions. Second operand 7 states. [2020-10-27 18:36:32,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:36:32,658 INFO L93 Difference]: Finished difference Result 56529 states and 69048 transitions. [2020-10-27 18:36:32,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:36:32,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 501 [2020-10-27 18:36:32,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:36:32,757 INFO L225 Difference]: With dead ends: 56529 [2020-10-27 18:36:32,757 INFO L226 Difference]: Without dead ends: 31185 [2020-10-27 18:36:32,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:36:32,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31185 states. [2020-10-27 18:36:33,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31185 to 31162. [2020-10-27 18:36:33,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31162 states. [2020-10-27 18:36:33,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31162 states to 31162 states and 38194 transitions. [2020-10-27 18:36:33,442 INFO L78 Accepts]: Start accepts. Automaton has 31162 states and 38194 transitions. Word has length 501 [2020-10-27 18:36:33,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:36:33,444 INFO L481 AbstractCegarLoop]: Abstraction has 31162 states and 38194 transitions. [2020-10-27 18:36:33,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:36:33,444 INFO L276 IsEmpty]: Start isEmpty. Operand 31162 states and 38194 transitions. [2020-10-27 18:36:33,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-10-27 18:36:33,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:33,476 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:33,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 18:36:33,477 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:33,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:33,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1122510911, now seen corresponding path program 1 times [2020-10-27 18:36:33,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:33,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863560401] [2020-10-27 18:36:33,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:33,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:33,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:33,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:35,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:37,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:37,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 549 [2020-10-27 18:36:37,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:36:37,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4056 [2020-10-27 18:36:37,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-27 18:36:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-27 18:36:37,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:37,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:37,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:37,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:37,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:37,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:37,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:36:37,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:37,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:37,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:37,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:37,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:37,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:37,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:37,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:37,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:36:37,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:37,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:36:37,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:37,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:37,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:36:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:37,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:37,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:37,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 18:36:37,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:37,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 18:36:37,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 18:36:37,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:38,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-27 18:36:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:38,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:38,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:38,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-27 18:36:38,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:38,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-27 18:36:38,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:36:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-27 18:36:38,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-27 18:36:38,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863560401] [2020-10-27 18:36:38,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:38,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:36:38,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454126312] [2020-10-27 18:36:38,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:36:38,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:38,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:36:38,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:36:38,807 INFO L87 Difference]: Start difference. First operand 31162 states and 38194 transitions. Second operand 8 states. [2020-10-27 18:36:47,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:36:47,753 INFO L93 Difference]: Finished difference Result 60995 states and 75061 transitions. [2020-10-27 18:36:47,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 18:36:47,754 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 533 [2020-10-27 18:36:47,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:36:47,834 INFO L225 Difference]: With dead ends: 60995 [2020-10-27 18:36:47,834 INFO L226 Difference]: Without dead ends: 30176 [2020-10-27 18:36:47,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-27 18:36:47,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30176 states. [2020-10-27 18:36:48,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30176 to 29161. [2020-10-27 18:36:48,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29161 states. [2020-10-27 18:36:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29161 states to 29161 states and 34621 transitions. [2020-10-27 18:36:48,617 INFO L78 Accepts]: Start accepts. Automaton has 29161 states and 34621 transitions. Word has length 533 [2020-10-27 18:36:48,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:36:48,618 INFO L481 AbstractCegarLoop]: Abstraction has 29161 states and 34621 transitions. [2020-10-27 18:36:48,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:36:48,618 INFO L276 IsEmpty]: Start isEmpty. Operand 29161 states and 34621 transitions. [2020-10-27 18:36:48,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2020-10-27 18:36:48,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:48,639 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 18:36:48,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 18:36:48,640 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:48,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:48,640 INFO L82 PathProgramCache]: Analyzing trace with hash 383677623, now seen corresponding path program 1 times [2020-10-27 18:36:48,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:48,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711175161] [2020-10-27 18:36:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:48,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:48,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:48,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:50,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:52,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:53,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:53,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 557 [2020-10-27 18:36:53,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:36:53,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 18:36:53,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:53,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:53,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 321 [2020-10-27 18:36:53,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-27 18:36:53,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:53,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:53,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:53,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:53,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:53,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:53,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:36:53,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:53,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:53,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:53,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:53,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:53,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:53,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:53,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:53,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:36:53,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:53,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:36:53,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:53,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:53,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:53,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:53,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:53,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:36:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:53,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:54,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:54,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 18:36:54,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:54,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 18:36:54,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:54,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:54,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:54,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-27 18:36:54,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:54,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-27 18:36:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:54,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:54,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:54,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-27 18:36:54,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-27 18:36:54,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:36:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-27 18:36:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:54,738 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-27 18:36:54,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711175161] [2020-10-27 18:36:54,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:54,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:36:54,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172181096] [2020-10-27 18:36:54,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:36:54,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:54,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:36:54,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:36:54,741 INFO L87 Difference]: Start difference. First operand 29161 states and 34621 transitions. Second operand 8 states. [2020-10-27 18:37:02,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:02,138 INFO L93 Difference]: Finished difference Result 59675 states and 71069 transitions. [2020-10-27 18:37:02,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:37:02,139 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 541 [2020-10-27 18:37:02,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:02,212 INFO L225 Difference]: With dead ends: 59675 [2020-10-27 18:37:02,213 INFO L226 Difference]: Without dead ends: 30857 [2020-10-27 18:37:02,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:37:02,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30857 states. [2020-10-27 18:37:02,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30857 to 26462. [2020-10-27 18:37:02,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26462 states. [2020-10-27 18:37:02,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26462 states to 26462 states and 30002 transitions. [2020-10-27 18:37:02,772 INFO L78 Accepts]: Start accepts. Automaton has 26462 states and 30002 transitions. Word has length 541 [2020-10-27 18:37:02,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:02,773 INFO L481 AbstractCegarLoop]: Abstraction has 26462 states and 30002 transitions. [2020-10-27 18:37:02,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:37:02,774 INFO L276 IsEmpty]: Start isEmpty. Operand 26462 states and 30002 transitions. [2020-10-27 18:37:02,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-10-27 18:37:02,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:02,792 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:37:02,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 18:37:02,793 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:02,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:02,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1488474182, now seen corresponding path program 1 times [2020-10-27 18:37:02,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:02,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301064026] [2020-10-27 18:37:02,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:02,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:03,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:04,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:04,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 558 [2020-10-27 18:37:04,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:37:04,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1426 [2020-10-27 18:37:04,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:04,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:04,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-27 18:37:04,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-27 18:37:04,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:04,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:04,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:04,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:04,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:04,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:04,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:37:04,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:04,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:04,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:04,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:04,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:04,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:04,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 18:37:04,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:04,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 18:37:04,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:04,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-27 18:37:04,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:04,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 18:37:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:04,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:05,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:05,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-27 18:37:05,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:05,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-27 18:37:05,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:05,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:05,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:37:05,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-27 18:37:05,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:37:05,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301064026] [2020-10-27 18:37:05,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:37:05,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:37:05,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385671760] [2020-10-27 18:37:05,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:37:05,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:37:05,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:37:05,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:37:05,660 INFO L87 Difference]: Start difference. First operand 26462 states and 30002 transitions. Second operand 7 states. [2020-10-27 18:37:11,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:11,538 INFO L93 Difference]: Finished difference Result 52619 states and 59783 transitions. [2020-10-27 18:37:11,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:37:11,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 544 [2020-10-27 18:37:11,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:11,616 INFO L225 Difference]: With dead ends: 52619 [2020-10-27 18:37:11,616 INFO L226 Difference]: Without dead ends: 26500 [2020-10-27 18:37:11,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:37:11,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26500 states. [2020-10-27 18:37:12,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26500 to 26468. [2020-10-27 18:37:12,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26468 states. [2020-10-27 18:37:12,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26468 states to 26468 states and 29998 transitions. [2020-10-27 18:37:12,262 INFO L78 Accepts]: Start accepts. Automaton has 26468 states and 29998 transitions. Word has length 544 [2020-10-27 18:37:12,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:12,264 INFO L481 AbstractCegarLoop]: Abstraction has 26468 states and 29998 transitions. [2020-10-27 18:37:12,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:37:12,264 INFO L276 IsEmpty]: Start isEmpty. Operand 26468 states and 29998 transitions. [2020-10-27 18:37:12,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-10-27 18:37:12,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:12,294 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:37:12,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 18:37:12,295 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:12,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:12,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1275870890, now seen corresponding path program 1 times [2020-10-27 18:37:12,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:12,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830075945] [2020-10-27 18:37:12,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:12,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:13,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:13,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 566 [2020-10-27 18:37:13,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:13,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 745 [2020-10-27 18:37:13,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:37:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-27 18:37:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 305 [2020-10-27 18:37:13,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:13,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:13,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:13,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:13,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:13,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:13,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:37:13,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:13,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:13,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:13,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:13,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:13,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:13,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:13,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:13,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 18:37:13,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:13,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 18:37:13,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-27 18:37:13,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:13,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 18:37:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:13,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:13,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:13,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-27 18:37:13,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:13,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-27 18:37:13,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:37:13,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:37:13,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-27 18:37:13,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 271 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:37:14,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830075945] [2020-10-27 18:37:14,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:37:14,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:37:14,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97617684] [2020-10-27 18:37:14,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:37:14,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:37:14,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:37:14,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:37:14,349 INFO L87 Difference]: Start difference. First operand 26468 states and 29998 transitions. Second operand 8 states. [2020-10-27 18:37:23,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:23,485 INFO L93 Difference]: Finished difference Result 58410 states and 66351 transitions. [2020-10-27 18:37:23,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 18:37:23,487 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 552 [2020-10-27 18:37:23,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:23,551 INFO L225 Difference]: With dead ends: 58410 [2020-10-27 18:37:23,551 INFO L226 Difference]: Without dead ends: 32285 [2020-10-27 18:37:23,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:37:23,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32285 states. [2020-10-27 18:37:24,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32285 to 31915. [2020-10-27 18:37:24,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31915 states. [2020-10-27 18:37:24,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31915 states to 31915 states and 36171 transitions. [2020-10-27 18:37:24,137 INFO L78 Accepts]: Start accepts. Automaton has 31915 states and 36171 transitions. Word has length 552 [2020-10-27 18:37:24,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:24,138 INFO L481 AbstractCegarLoop]: Abstraction has 31915 states and 36171 transitions. [2020-10-27 18:37:24,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:37:24,139 INFO L276 IsEmpty]: Start isEmpty. Operand 31915 states and 36171 transitions. [2020-10-27 18:37:24,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-10-27 18:37:24,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:24,159 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:37:24,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 18:37:24,159 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:24,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:24,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1658549400, now seen corresponding path program 1 times [2020-10-27 18:37:24,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:24,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725578957] [2020-10-27 18:37:24,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:24,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:24,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:24,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:25,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:25,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:27,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:28,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:29,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:29,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-27 18:37:29,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:37:29,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 18:37:29,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:29,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:29,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 450 [2020-10-27 18:37:29,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-27 18:37:29,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:29,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:29,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:29,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:29,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:29,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:29,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:37:29,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:29,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:29,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:29,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:29,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:29,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:29,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:29,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:29,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:37:29,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:29,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 18:37:29,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:29,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:29,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:37:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:29,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:29,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:29,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:37:29,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:29,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 18:37:29,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:29,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:29,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:29,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:29,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:29,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-27 18:37:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:29,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:29,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:29,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 18:37:29,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:29,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 18:37:29,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 18:37:29,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:29,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-10-27 18:37:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:29,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:29,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:29,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 18:37:29,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:29,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 18:37:29,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:29,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:29,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:37:29,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 18:37:29,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 414 proven. 2 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2020-10-27 18:37:30,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725578957] [2020-10-27 18:37:30,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:37:30,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:37:30,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611485334] [2020-10-27 18:37:30,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:37:30,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:37:30,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:37:30,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:37:30,132 INFO L87 Difference]: Start difference. First operand 31915 states and 36171 transitions. Second operand 7 states. [2020-10-27 18:37:37,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:37,403 INFO L93 Difference]: Finished difference Result 66585 states and 75701 transitions. [2020-10-27 18:37:37,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:37:37,405 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 580 [2020-10-27 18:37:37,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:37,470 INFO L225 Difference]: With dead ends: 66585 [2020-10-27 18:37:37,471 INFO L226 Difference]: Without dead ends: 35013 [2020-10-27 18:37:37,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:37:37,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35013 states. [2020-10-27 18:37:38,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35013 to 34984. [2020-10-27 18:37:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34984 states. [2020-10-27 18:37:38,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34984 states to 34984 states and 39765 transitions. [2020-10-27 18:37:38,078 INFO L78 Accepts]: Start accepts. Automaton has 34984 states and 39765 transitions. Word has length 580 [2020-10-27 18:37:38,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:38,079 INFO L481 AbstractCegarLoop]: Abstraction has 34984 states and 39765 transitions. [2020-10-27 18:37:38,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:37:38,080 INFO L276 IsEmpty]: Start isEmpty. Operand 34984 states and 39765 transitions. [2020-10-27 18:37:38,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2020-10-27 18:37:38,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:38,103 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:38,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 18:37:38,104 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:38,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:38,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1675590749, now seen corresponding path program 1 times [2020-10-27 18:37:38,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:38,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773533400] [2020-10-27 18:37:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:38,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:38,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:38,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:40,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:43,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:43,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 608 [2020-10-27 18:37:43,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:37:43,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 18:37:43,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:37:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-27 18:37:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 18:37:43,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:43,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:43,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:43,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:43,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:43,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:43,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:37:43,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:43,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:43,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:43,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:43,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:43,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:43,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:43,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:43,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:37:43,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:43,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:37:43,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:43,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:43,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:43,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:43,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:43,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:37:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:43,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:43,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:43,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 18:37:43,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:43,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 18:37:43,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:43,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:43,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:43,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-27 18:37:43,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:43,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:37:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:43,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:43,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:43,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 18:37:43,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:43,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:37:43,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:43,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:43,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:43,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 18:37:43,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:43,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-10-27 18:37:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:43,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:43,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:44,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:44,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-27 18:37:44,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:37:44,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-27 18:37:44,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:37:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:37:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-27 18:37:44,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:45,015 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 336 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-27 18:37:45,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773533400] [2020-10-27 18:37:45,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:37:45,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 18:37:45,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313361388] [2020-10-27 18:37:45,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 18:37:45,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:37:45,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 18:37:45,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:37:45,017 INFO L87 Difference]: Start difference. First operand 34984 states and 39765 transitions. Second operand 10 states. [2020-10-27 18:37:45,356 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-27 18:37:45,644 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-27 18:37:45,905 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-27 18:37:46,161 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-10-27 18:37:48,947 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2020-10-27 18:37:49,353 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2020-10-27 18:37:49,617 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2020-10-27 18:37:52,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:52,658 INFO L93 Difference]: Finished difference Result 66506 states and 75525 transitions. [2020-10-27 18:37:52,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 18:37:52,660 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 590 [2020-10-27 18:37:52,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:52,726 INFO L225 Difference]: With dead ends: 66506 [2020-10-27 18:37:52,726 INFO L226 Difference]: Without dead ends: 31446 [2020-10-27 18:37:52,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-10-27 18:37:52,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31446 states. [2020-10-27 18:37:53,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31446 to 31212. [2020-10-27 18:37:53,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31212 states. [2020-10-27 18:37:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31212 states to 31212 states and 34897 transitions. [2020-10-27 18:37:53,139 INFO L78 Accepts]: Start accepts. Automaton has 31212 states and 34897 transitions. Word has length 590 [2020-10-27 18:37:53,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:53,140 INFO L481 AbstractCegarLoop]: Abstraction has 31212 states and 34897 transitions. [2020-10-27 18:37:53,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 18:37:53,141 INFO L276 IsEmpty]: Start isEmpty. Operand 31212 states and 34897 transitions. [2020-10-27 18:37:53,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2020-10-27 18:37:53,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:53,157 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:37:53,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 18:37:53,158 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:53,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:53,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1454063398, now seen corresponding path program 1 times [2020-10-27 18:37:53,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:53,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468668801] [2020-10-27 18:37:53,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:53,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:53,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:53,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:53,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:54,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:55,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:55,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:56,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:58,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:58,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 608 [2020-10-27 18:37:58,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 18:37:58,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 18:37:58,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:37:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-27 18:37:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 256 [2020-10-27 18:37:58,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:58,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:58,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:58,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:58,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:58,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:58,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:37:58,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:58,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:58,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:58,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:58,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:58,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:37:58,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:58,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:37:58,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:58,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:58,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:58,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:58,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:58,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:37:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:58,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:58,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:58,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:37:58,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:58,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-27 18:37:58,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:58,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:58,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:58,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-27 18:37:58,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:58,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314