/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:29:19,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:29:19,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:29:19,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:29:19,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:29:19,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:29:19,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:29:19,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:29:19,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:29:19,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:29:19,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:29:19,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:29:19,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:29:19,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:29:19,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:29:19,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:29:19,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:29:19,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:29:19,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:29:19,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:29:19,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:29:19,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:29:19,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:29:19,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:29:19,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:29:19,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:29:19,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:29:19,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:29:19,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:29:19,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:29:19,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:29:19,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:29:19,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:29:19,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:29:19,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:29:19,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:29:19,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:29:19,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:29:19,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:29:19,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:29:19,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:29:19,528 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 [2020-10-26 23:29:19,559 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:29:19,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:29:19,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:29:19,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:29:19,561 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:29:19,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:29:19,561 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:29:19,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:29:19,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:29:19,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:29:19,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:29:19,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:29:19,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:29:19,564 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:29:19,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:29:19,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:29:19,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:29:19,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:29:19,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:29:19,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:29:19,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:29:19,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:29:19,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:29:19,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:29:19,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:29:19,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:29:19,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:29:19,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:29:19,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:29:19,568 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:29:19,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:29:20,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:29:20,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:29:20,026 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:29:20,026 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:29:20,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label40.c [2020-10-26 23:29:20,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/116fdd554/8aa04564b5ef41bfb4d18131ad65086a/FLAG6f228f5c9 [2020-10-26 23:29:20,834 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:29:20,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label40.c [2020-10-26 23:29:20,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/116fdd554/8aa04564b5ef41bfb4d18131ad65086a/FLAG6f228f5c9 [2020-10-26 23:29:21,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/116fdd554/8aa04564b5ef41bfb4d18131ad65086a [2020-10-26 23:29:21,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:29:21,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:29:21,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:29:21,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:29:21,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:29:21,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:29:21" (1/1) ... [2020-10-26 23:29:21,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e24083e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:21, skipping insertion in model container [2020-10-26 23:29:21,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:29:21" (1/1) ... [2020-10-26 23:29:21,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:29:21,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:29:21,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:29:21,659 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:29:21,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:29:21,878 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:29:21,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:21 WrapperNode [2020-10-26 23:29:21,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:29:21,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:29:21,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:29:21,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:29:21,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:21" (1/1) ... [2020-10-26 23:29:21,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:21" (1/1) ... [2020-10-26 23:29:21,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:21" (1/1) ... [2020-10-26 23:29:21,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:21" (1/1) ... [2020-10-26 23:29:22,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:21" (1/1) ... [2020-10-26 23:29:22,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:21" (1/1) ... [2020-10-26 23:29:22,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:21" (1/1) ... [2020-10-26 23:29:22,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:29:22,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:29:22,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:29:22,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:29:22,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:21" (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 [2020-10-26 23:29:22,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:29:22,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:29:22,203 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:29:22,203 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:29:22,203 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:29:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:29:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:29:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:29:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:29:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:29:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:29:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:29:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:29:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:29:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:29:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:29:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:29:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:29:22,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:29:23,754 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:29:23,754 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:29:23,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:29:23 BoogieIcfgContainer [2020-10-26 23:29:23,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:29:23,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:29:23,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:29:23,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:29:23,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:29:21" (1/3) ... [2020-10-26 23:29:23,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba96e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:29:23, skipping insertion in model container [2020-10-26 23:29:23,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:21" (2/3) ... [2020-10-26 23:29:23,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba96e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:29:23, skipping insertion in model container [2020-10-26 23:29:23,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:29:23" (3/3) ... [2020-10-26 23:29:23,764 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label40.c [2020-10-26 23:29:23,776 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:29:23,782 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:29:23,796 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:29:23,827 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:29:23,827 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:29:23,827 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:29:23,827 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:29:23,827 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:29:23,828 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:29:23,828 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:29:23,828 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:29:23,851 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:29:23,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-26 23:29:23,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:23,858 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] [2020-10-26 23:29:23,859 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:23,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:23,868 INFO L82 PathProgramCache]: Analyzing trace with hash -900009696, now seen corresponding path program 1 times [2020-10-26 23:29:23,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:23,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629734393] [2020-10-26 23:29:23,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:24,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:24,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:24,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-26 23:29:24,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:24,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-26 23:29:24,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:29:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:29:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 23:29:24,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 23:29:24,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:24,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:24,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:24,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:24,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:24,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:29:24,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:29:24,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:29:24,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629734393] [2020-10-26 23:29:24,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:29:24,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:29:24,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581933493] [2020-10-26 23:29:24,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:29:24,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:24,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:29:24,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:29:24,839 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-26 23:29:27,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:27,108 INFO L93 Difference]: Finished difference Result 703 states and 1247 transitions. [2020-10-26 23:29:27,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:29:27,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-26 23:29:27,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:27,127 INFO L225 Difference]: With dead ends: 703 [2020-10-26 23:29:27,127 INFO L226 Difference]: Without dead ends: 381 [2020-10-26 23:29:27,138 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 [2020-10-26 23:29:27,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-26 23:29:27,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 375. [2020-10-26 23:29:27,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-26 23:29:27,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 605 transitions. [2020-10-26 23:29:27,246 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 605 transitions. Word has length 26 [2020-10-26 23:29:27,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:27,247 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 605 transitions. [2020-10-26 23:29:27,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:29:27,247 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 605 transitions. [2020-10-26 23:29:27,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-26 23:29:27,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:27,252 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 23:29:27,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:29:27,253 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:27,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:27,254 INFO L82 PathProgramCache]: Analyzing trace with hash -176540692, now seen corresponding path program 1 times [2020-10-26 23:29:27,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:27,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923804819] [2020-10-26 23:29:27,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:27,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:27,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:28,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-26 23:29:28,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:28,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1158 [2020-10-26 23:29:28,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:29:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:29:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:29:28,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:29:28,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:28,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:28,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:28,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:28,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:29:28,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:28,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:29:28,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:28,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:28,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:28,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:29:28,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:28,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-26 23:29:28,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:28,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:28,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:29:28,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:28,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:29:28,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923804819] [2020-10-26 23:29:28,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:29:28,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:29:28,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695926249] [2020-10-26 23:29:28,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:28,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:28,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:28,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:28,819 INFO L87 Difference]: Start difference. First operand 375 states and 605 transitions. Second operand 7 states. [2020-10-26 23:29:31,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:31,679 INFO L93 Difference]: Finished difference Result 1147 states and 1882 transitions. [2020-10-26 23:29:31,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:29:31,680 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-26 23:29:31,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:31,687 INFO L225 Difference]: With dead ends: 1147 [2020-10-26 23:29:31,688 INFO L226 Difference]: Without dead ends: 778 [2020-10-26 23:29:31,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:29:31,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-10-26 23:29:31,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 751. [2020-10-26 23:29:31,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-10-26 23:29:31,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1065 transitions. [2020-10-26 23:29:31,790 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1065 transitions. Word has length 95 [2020-10-26 23:29:31,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:31,791 INFO L481 AbstractCegarLoop]: Abstraction has 751 states and 1065 transitions. [2020-10-26 23:29:31,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:31,791 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1065 transitions. [2020-10-26 23:29:31,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-26 23:29:31,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:31,795 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 23:29:31,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:29:31,796 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:31,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:31,797 INFO L82 PathProgramCache]: Analyzing trace with hash 960958632, now seen corresponding path program 1 times [2020-10-26 23:29:31,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:31,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918974245] [2020-10-26 23:29:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:31,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:31,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:32,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:32,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:29:32,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:32,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 680 [2020-10-26 23:29:32,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:32,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:29:32,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:29:32,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:29:32,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:32,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:32,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:32,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:32,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:32,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:32,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:29:32,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:32,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:32,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:32,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:29:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:29:32,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:32,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:32,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:32,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:29:32,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:32,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:29:32,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:29:32,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:29:32,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918974245] [2020-10-26 23:29:32,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:29:32,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:29:32,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682938638] [2020-10-26 23:29:32,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:32,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:32,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:32,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:32,860 INFO L87 Difference]: Start difference. First operand 751 states and 1065 transitions. Second operand 7 states. [2020-10-26 23:29:35,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:35,663 INFO L93 Difference]: Finished difference Result 1942 states and 2939 transitions. [2020-10-26 23:29:35,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:29:35,666 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-26 23:29:35,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:35,686 INFO L225 Difference]: With dead ends: 1942 [2020-10-26 23:29:35,686 INFO L226 Difference]: Without dead ends: 1197 [2020-10-26 23:29:35,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:29:35,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2020-10-26 23:29:35,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1129. [2020-10-26 23:29:35,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2020-10-26 23:29:35,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1541 transitions. [2020-10-26 23:29:35,810 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1541 transitions. Word has length 96 [2020-10-26 23:29:35,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:35,810 INFO L481 AbstractCegarLoop]: Abstraction has 1129 states and 1541 transitions. [2020-10-26 23:29:35,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:35,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1541 transitions. [2020-10-26 23:29:35,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-26 23:29:35,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:35,821 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 23:29:35,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:29:35,822 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:35,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:35,823 INFO L82 PathProgramCache]: Analyzing trace with hash -383522332, now seen corresponding path program 1 times [2020-10-26 23:29:35,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:35,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549541044] [2020-10-26 23:29:35,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:35,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:35,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:37,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:37,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:37,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:37,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1193 [2020-10-26 23:29:37,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:37,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:29:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:29:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:29:37,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:37,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:37,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:37,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:37,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:37,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:37,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:29:37,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:37,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:37,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:37,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:29:37,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:37,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:37,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:37,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:37,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:29:37,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:37,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-26 23:29:37,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:29:37,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:29:37,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549541044] [2020-10-26 23:29:37,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:29:37,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:29:37,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439789953] [2020-10-26 23:29:37,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:37,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:37,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:37,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:37,487 INFO L87 Difference]: Start difference. First operand 1129 states and 1541 transitions. Second operand 7 states. [2020-10-26 23:29:40,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:40,014 INFO L93 Difference]: Finished difference Result 2093 states and 2902 transitions. [2020-10-26 23:29:40,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:29:40,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-26 23:29:40,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:40,025 INFO L225 Difference]: With dead ends: 2093 [2020-10-26 23:29:40,025 INFO L226 Difference]: Without dead ends: 970 [2020-10-26 23:29:40,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:29:40,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-26 23:29:40,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 943. [2020-10-26 23:29:40,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-10-26 23:29:40,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1286 transitions. [2020-10-26 23:29:40,083 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1286 transitions. Word has length 99 [2020-10-26 23:29:40,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:40,083 INFO L481 AbstractCegarLoop]: Abstraction has 943 states and 1286 transitions. [2020-10-26 23:29:40,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:40,083 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1286 transitions. [2020-10-26 23:29:40,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-26 23:29:40,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:40,087 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 23:29:40,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:29:40,087 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:40,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:40,088 INFO L82 PathProgramCache]: Analyzing trace with hash 656464140, now seen corresponding path program 1 times [2020-10-26 23:29:40,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:40,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291591519] [2020-10-26 23:29:40,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 23:29:40,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-26 23:29:40,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:40,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:29:40,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 23:29:40,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:40,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:29:40,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:29:40,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:29:40,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:40,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:29:40,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,562 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:29:40,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291591519] [2020-10-26 23:29:40,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:40,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:29:40,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150139864] [2020-10-26 23:29:40,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:29:40,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:40,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:29:40,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:29:40,566 INFO L87 Difference]: Start difference. First operand 943 states and 1286 transitions. Second operand 5 states. [2020-10-26 23:29:42,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:42,735 INFO L93 Difference]: Finished difference Result 2254 states and 3099 transitions. [2020-10-26 23:29:42,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:29:42,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-26 23:29:42,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:42,745 INFO L225 Difference]: With dead ends: 2254 [2020-10-26 23:29:42,745 INFO L226 Difference]: Without dead ends: 1317 [2020-10-26 23:29:42,748 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 [2020-10-26 23:29:42,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-10-26 23:29:42,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1125. [2020-10-26 23:29:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2020-10-26 23:29:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1476 transitions. [2020-10-26 23:29:42,796 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1476 transitions. Word has length 110 [2020-10-26 23:29:42,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:42,797 INFO L481 AbstractCegarLoop]: Abstraction has 1125 states and 1476 transitions. [2020-10-26 23:29:42,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:29:42,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1476 transitions. [2020-10-26 23:29:42,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-26 23:29:42,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:42,801 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:42,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:29:42,801 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:42,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:42,802 INFO L82 PathProgramCache]: Analyzing trace with hash 145228132, now seen corresponding path program 1 times [2020-10-26 23:29:42,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:42,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90459548] [2020-10-26 23:29:42,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:42,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:42,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:43,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:43,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:44,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:45,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:45,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-26 23:29:45,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:29:45,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2513 [2020-10-26 23:29:45,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:45,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:29:45,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:29:45,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 23:29:45,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:45,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:45,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:45,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:45,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:45,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:45,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:29:45,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:29:45,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:45,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:45,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:45,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:45,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:29:45,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:45,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:29:45,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:45,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:45,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:45,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:29:45,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:45,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:29:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:45,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:46,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:46,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:29:46,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:46,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-26 23:29:46,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:29:46,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:29:46,466 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:29:46,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90459548] [2020-10-26 23:29:46,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:46,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:46,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893760197] [2020-10-26 23:29:46,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:29:46,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:46,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:29:46,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:29:46,470 INFO L87 Difference]: Start difference. First operand 1125 states and 1476 transitions. Second operand 8 states. [2020-10-26 23:29:49,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:49,196 INFO L93 Difference]: Finished difference Result 2658 states and 3414 transitions. [2020-10-26 23:29:49,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:29:49,198 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 193 [2020-10-26 23:29:49,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:49,207 INFO L225 Difference]: With dead ends: 2658 [2020-10-26 23:29:49,207 INFO L226 Difference]: Without dead ends: 1355 [2020-10-26 23:29:49,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:29:49,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2020-10-26 23:29:49,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1309. [2020-10-26 23:29:49,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1309 states. [2020-10-26 23:29:49,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1662 transitions. [2020-10-26 23:29:49,257 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1662 transitions. Word has length 193 [2020-10-26 23:29:49,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:49,258 INFO L481 AbstractCegarLoop]: Abstraction has 1309 states and 1662 transitions. [2020-10-26 23:29:49,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:29:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1662 transitions. [2020-10-26 23:29:49,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-26 23:29:49,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:49,263 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:49,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:29:49,264 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:49,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:49,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1211489024, now seen corresponding path program 1 times [2020-10-26 23:29:49,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:49,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651282876] [2020-10-26 23:29:49,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:49,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:49,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:49,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:51,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:51,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:52,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:54,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:54,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-26 23:29:54,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:29:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 23:29:54,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:29:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:29:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:29:54,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:54,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:54,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:54,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:54,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:54,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:54,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:29:54,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:54,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:54,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:54,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:29:54,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:29:54,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:54,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:54,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:54,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:54,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:54,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-26 23:29:54,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:29:54,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:54,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:29:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:54,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:54,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:54,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:29:54,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:54,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:29:54,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:54,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:54,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-26 23:29:54,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:54,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:54,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-26 23:29:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:54,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:54,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:54,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:29:54,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:54,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:29:54,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:29:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:54,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 54 proven. 142 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-26 23:29:55,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651282876] [2020-10-26 23:29:55,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:55,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:55,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903340789] [2020-10-26 23:29:55,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:55,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:55,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:55,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:55,061 INFO L87 Difference]: Start difference. First operand 1309 states and 1662 transitions. Second operand 7 states. [2020-10-26 23:29:57,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:57,771 INFO L93 Difference]: Finished difference Result 3382 states and 4477 transitions. [2020-10-26 23:29:57,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:29:57,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 287 [2020-10-26 23:29:57,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:57,788 INFO L225 Difference]: With dead ends: 3382 [2020-10-26 23:29:57,788 INFO L226 Difference]: Without dead ends: 2261 [2020-10-26 23:29:57,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:29:57,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2020-10-26 23:29:57,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2063. [2020-10-26 23:29:57,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2063 states. [2020-10-26 23:29:57,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 2641 transitions. [2020-10-26 23:29:57,869 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 2641 transitions. Word has length 287 [2020-10-26 23:29:57,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:57,869 INFO L481 AbstractCegarLoop]: Abstraction has 2063 states and 2641 transitions. [2020-10-26 23:29:57,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:57,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 2641 transitions. [2020-10-26 23:29:57,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-10-26 23:29:57,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:57,878 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-26 23:29:57,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:29:57,879 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:57,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:57,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1191936136, now seen corresponding path program 1 times [2020-10-26 23:29:57,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:57,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823235959] [2020-10-26 23:29:57,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:58,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:58,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:59,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:59,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:01,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:02,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:02,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-26 23:30:02,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:30:02,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 23:30:02,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:30:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:30:02,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:03,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:03,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:30:03,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:03,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:03,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:03,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:03,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:30:03,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:03,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:03,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:30:03,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:30:03,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:30:03,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:30:03,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:03,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:03,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:30:03,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-26 23:30:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:03,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:30:03,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:30:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:03,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 223 proven. 71 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-26 23:30:03,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823235959] [2020-10-26 23:30:03,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:03,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:03,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714851879] [2020-10-26 23:30:03,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:03,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:03,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:03,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:03,737 INFO L87 Difference]: Start difference. First operand 2063 states and 2641 transitions. Second operand 7 states. [2020-10-26 23:30:06,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:06,439 INFO L93 Difference]: Finished difference Result 4910 states and 6663 transitions. [2020-10-26 23:30:06,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:30:06,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 400 [2020-10-26 23:30:06,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:06,461 INFO L225 Difference]: With dead ends: 4910 [2020-10-26 23:30:06,462 INFO L226 Difference]: Without dead ends: 3219 [2020-10-26 23:30:06,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:30:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2020-10-26 23:30:06,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3197. [2020-10-26 23:30:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-10-26 23:30:06,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4122 transitions. [2020-10-26 23:30:06,565 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4122 transitions. Word has length 400 [2020-10-26 23:30:06,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:06,566 INFO L481 AbstractCegarLoop]: Abstraction has 3197 states and 4122 transitions. [2020-10-26 23:30:06,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:06,566 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4122 transitions. [2020-10-26 23:30:06,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-26 23:30:06,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:06,575 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-26 23:30:06,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:30:06,575 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:06,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:06,576 INFO L82 PathProgramCache]: Analyzing trace with hash 410843088, now seen corresponding path program 1 times [2020-10-26 23:30:06,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:06,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242434228] [2020-10-26 23:30:06,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:06,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:06,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:11,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:11,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-26 23:30:11,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:30:11,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 23:30:11,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:11,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:11,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:30:11,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:30:11,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:11,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:11,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:11,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:11,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:11,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:11,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:30:11,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:11,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:11,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:11,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:11,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:11,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:11,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:30:11,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:11,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:11,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:11,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:11,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:11,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:11,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:12,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:12,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:12,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:12,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 23:30:12,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:30:12,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:12,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:12,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:12,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:12,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:12,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:12,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 23:30:12,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:12,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:12,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:12,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:30:12,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:12,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-26 23:30:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:12,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:12,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:12,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:12,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:12,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:30:12,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:12,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:12,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:30:12,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:12,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 225 proven. 72 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-26 23:30:12,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242434228] [2020-10-26 23:30:12,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:12,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:12,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966287168] [2020-10-26 23:30:12,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:12,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:12,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:12,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:12,641 INFO L87 Difference]: Start difference. First operand 3197 states and 4122 transitions. Second operand 7 states. [2020-10-26 23:30:12,791 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:30:15,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:15,419 INFO L93 Difference]: Finished difference Result 6402 states and 8308 transitions. [2020-10-26 23:30:15,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:30:15,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 401 [2020-10-26 23:30:15,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:15,450 INFO L225 Difference]: With dead ends: 6402 [2020-10-26 23:30:15,450 INFO L226 Difference]: Without dead ends: 3577 [2020-10-26 23:30:15,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:30:15,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2020-10-26 23:30:15,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3201. [2020-10-26 23:30:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3201 states. [2020-10-26 23:30:15,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4058 transitions. [2020-10-26 23:30:15,562 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4058 transitions. Word has length 401 [2020-10-26 23:30:15,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:15,563 INFO L481 AbstractCegarLoop]: Abstraction has 3201 states and 4058 transitions. [2020-10-26 23:30:15,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:15,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4058 transitions. [2020-10-26 23:30:15,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-26 23:30:15,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:15,575 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-26 23:30:15,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:30:15,575 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:15,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:15,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1618709720, now seen corresponding path program 1 times [2020-10-26 23:30:15,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:15,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11047845] [2020-10-26 23:30:15,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:15,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:15,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:16,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:17,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:18,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:20,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:20,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-10-26 23:30:20,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:30:20,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 23:30:20,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:20,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:20,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:30:20,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:30:20,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:20,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:20,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:20,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:20,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:20,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:20,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:30:20,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:20,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:20,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:20,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:20,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:20,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:20,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:20,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:20,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:20,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:20,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:30:20,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:20,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:20,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:20,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:20,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:20,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:20,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:20,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:20,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:20,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:30:20,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:30:20,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:21,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:21,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:21,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:21,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-26 23:30:21,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:21,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:30:21,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 23:30:21,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:21,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-10-26 23:30:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:21,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:21,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:21,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:21,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:21,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:30:21,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:21,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:21,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:30:21,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:21,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 233 proven. 76 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-26 23:30:21,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11047845] [2020-10-26 23:30:21,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:21,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:21,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227055054] [2020-10-26 23:30:21,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:21,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:21,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:21,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:21,495 INFO L87 Difference]: Start difference. First operand 3201 states and 4058 transitions. Second operand 7 states. [2020-10-26 23:30:24,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:24,105 INFO L93 Difference]: Finished difference Result 6586 states and 8473 transitions. [2020-10-26 23:30:24,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:30:24,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 405 [2020-10-26 23:30:24,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:24,124 INFO L225 Difference]: With dead ends: 6586 [2020-10-26 23:30:24,124 INFO L226 Difference]: Without dead ends: 3573 [2020-10-26 23:30:24,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:30:24,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2020-10-26 23:30:24,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 3571. [2020-10-26 23:30:24,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3571 states. [2020-10-26 23:30:24,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3571 states to 3571 states and 4522 transitions. [2020-10-26 23:30:24,249 INFO L78 Accepts]: Start accepts. Automaton has 3571 states and 4522 transitions. Word has length 405 [2020-10-26 23:30:24,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:24,249 INFO L481 AbstractCegarLoop]: Abstraction has 3571 states and 4522 transitions. [2020-10-26 23:30:24,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:24,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3571 states and 4522 transitions. [2020-10-26 23:30:24,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-26 23:30:24,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:24,258 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:24,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:30:24,258 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:24,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:24,259 INFO L82 PathProgramCache]: Analyzing trace with hash 505530528, now seen corresponding path program 1 times [2020-10-26 23:30:24,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:24,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733635129] [2020-10-26 23:30:24,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:24,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:24,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:28,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:28,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-10-26 23:30:28,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:30:28,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4110 [2020-10-26 23:30:28,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:28,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:28,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:30:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:30:28,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:28,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:28,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:28,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:28,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:28,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:28,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:30:28,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:28,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:28,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:28,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:28,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:28,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:28,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:28,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:30:28,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:28,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:28,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:28,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:28,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:28,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:28,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:28,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:30:28,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:30:28,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:28,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:28,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:28,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:29,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:29,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:30:29,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:29,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 23:30:29,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:29,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:29,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:29,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:30:29,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:29,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-26 23:30:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:29,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:29,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:29,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:29,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:29,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 23:30:29,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:30:29,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 401 proven. 6 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2020-10-26 23:30:29,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733635129] [2020-10-26 23:30:29,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:29,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:30:29,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363943390] [2020-10-26 23:30:29,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:30:29,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:29,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:30:29,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:30:29,489 INFO L87 Difference]: Start difference. First operand 3571 states and 4522 transitions. Second operand 9 states. [2020-10-26 23:30:33,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:33,560 INFO L93 Difference]: Finished difference Result 6986 states and 8985 transitions. [2020-10-26 23:30:33,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:30:33,561 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 412 [2020-10-26 23:30:33,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:33,580 INFO L225 Difference]: With dead ends: 6986 [2020-10-26 23:30:33,580 INFO L226 Difference]: Without dead ends: 3787 [2020-10-26 23:30:33,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:30:33,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2020-10-26 23:30:33,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3765. [2020-10-26 23:30:33,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3765 states. [2020-10-26 23:30:33,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3765 states to 3765 states and 4756 transitions. [2020-10-26 23:30:33,689 INFO L78 Accepts]: Start accepts. Automaton has 3765 states and 4756 transitions. Word has length 412 [2020-10-26 23:30:33,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:33,690 INFO L481 AbstractCegarLoop]: Abstraction has 3765 states and 4756 transitions. [2020-10-26 23:30:33,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:30:33,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3765 states and 4756 transitions. [2020-10-26 23:30:33,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-10-26 23:30:33,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:33,700 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:33,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:30:33,700 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:33,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:33,701 INFO L82 PathProgramCache]: Analyzing trace with hash -225466176, now seen corresponding path program 1 times [2020-10-26 23:30:33,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:33,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418285342] [2020-10-26 23:30:33,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:33,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:34,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:34,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:34,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:35,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:35,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 446 [2020-10-26 23:30:35,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:30:35,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1866 [2020-10-26 23:30:35,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:35,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:35,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 333 [2020-10-26 23:30:35,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:30:35,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:35,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:35,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:35,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:35,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:35,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:35,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:30:35,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:35,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:35,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:35,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:35,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:35,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:35,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:30:35,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:35,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:35,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:35,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:35,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:35,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:35,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:35,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:30:35,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:35,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:35,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:35,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:35,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:35,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:30:35,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:35,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:30:35,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:30:35,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:35,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-26 23:30:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:36,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:36,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-26 23:30:36,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:36,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:36,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:30:36,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 322 proven. 2 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-26 23:30:36,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418285342] [2020-10-26 23:30:36,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:36,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:30:36,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882093685] [2020-10-26 23:30:36,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:36,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:36,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:36,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:36,366 INFO L87 Difference]: Start difference. First operand 3765 states and 4756 transitions. Second operand 8 states. [2020-10-26 23:30:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:40,755 INFO L93 Difference]: Finished difference Result 9016 states and 11726 transitions. [2020-10-26 23:30:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:30:40,756 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 428 [2020-10-26 23:30:40,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:40,775 INFO L225 Difference]: With dead ends: 9016 [2020-10-26 23:30:40,775 INFO L226 Difference]: Without dead ends: 4665 [2020-10-26 23:30:40,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:30:40,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4665 states. [2020-10-26 23:30:40,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4665 to 3925. [2020-10-26 23:30:40,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3925 states. [2020-10-26 23:30:40,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3925 states to 3925 states and 4452 transitions. [2020-10-26 23:30:40,883 INFO L78 Accepts]: Start accepts. Automaton has 3925 states and 4452 transitions. Word has length 428 [2020-10-26 23:30:40,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:40,884 INFO L481 AbstractCegarLoop]: Abstraction has 3925 states and 4452 transitions. [2020-10-26 23:30:40,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:40,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3925 states and 4452 transitions. [2020-10-26 23:30:40,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2020-10-26 23:30:40,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:40,893 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:40,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:30:40,893 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:40,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:40,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1260750740, now seen corresponding path program 1 times [2020-10-26 23:30:40,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:40,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342483236] [2020-10-26 23:30:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:41,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:41,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:42,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:46,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:46,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 802 [2020-10-26 23:30:46,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:30:46,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 23:30:46,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:46,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:46,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:30:46,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-26 23:30:46,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:46,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:46,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:46,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:46,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:46,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:46,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:30:46,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:46,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:46,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:46,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:46,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:46,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:46,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:46,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:46,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:46,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:46,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:30:46,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:46,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:46,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:46,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:46,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:46,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:46,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:46,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:30:46,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:46,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:46,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:46,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:46,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:46,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:46,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:46,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:46,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:46,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:46,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:30:46,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:46,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:46,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:46,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:46,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:46,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:46,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:46,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:46,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:30:46,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:46,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 23:30:46,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:30:46,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:46,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:30:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:46,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:46,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:46,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:30:46,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:46,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-26 23:30:46,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:30:46,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:46,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-10-26 23:30:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:47,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:47,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:47,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:30:47,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:47,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:30:47,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:30:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:47,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1667 backedges. 622 proven. 79 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2020-10-26 23:30:47,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342483236] [2020-10-26 23:30:47,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:47,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:47,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038225063] [2020-10-26 23:30:47,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:47,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:47,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:47,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:47,434 INFO L87 Difference]: Start difference. First operand 3925 states and 4452 transitions. Second operand 7 states. [2020-10-26 23:30:49,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:49,467 INFO L93 Difference]: Finished difference Result 8954 states and 10380 transitions. [2020-10-26 23:30:49,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:30:49,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 780 [2020-10-26 23:30:49,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:49,502 INFO L225 Difference]: With dead ends: 8954 [2020-10-26 23:30:49,502 INFO L226 Difference]: Without dead ends: 5401 [2020-10-26 23:30:49,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:30:49,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5401 states. [2020-10-26 23:30:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5401 to 4849. [2020-10-26 23:30:49,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4849 states. [2020-10-26 23:30:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4849 states to 4849 states and 5639 transitions. [2020-10-26 23:30:49,620 INFO L78 Accepts]: Start accepts. Automaton has 4849 states and 5639 transitions. Word has length 780 [2020-10-26 23:30:49,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:49,623 INFO L481 AbstractCegarLoop]: Abstraction has 4849 states and 5639 transitions. [2020-10-26 23:30:49,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:49,623 INFO L276 IsEmpty]: Start isEmpty. Operand 4849 states and 5639 transitions. [2020-10-26 23:30:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2020-10-26 23:30:49,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:49,634 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:49,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:30:49,635 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:49,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:49,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1645730792, now seen corresponding path program 1 times [2020-10-26 23:30:49,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:49,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596620319] [2020-10-26 23:30:49,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:49,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:50,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:50,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:54,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:54,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 880 [2020-10-26 23:30:54,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:30:54,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-26 23:30:54,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:54,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:54,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:30:54,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:30:54,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:54,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:54,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:54,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:54,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:54,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:54,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:30:54,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:54,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:54,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:54,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:54,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:54,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:55,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:55,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:55,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:30:55,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:55,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:55,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:55,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:55,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:55,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:55,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:55,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:30:55,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:55,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:55,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:55,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:55,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:55,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:30:55,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:55,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:55,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:55,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:30:55,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:55,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:30:55,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:55,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:55,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:30:55,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:55,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:30:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:55,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:30:55,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:55,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:30:55,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:55,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:55,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:30:55,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:55,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-26 23:30:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:55,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:30:55,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:55,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:30:55,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:55,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:30:55,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:55,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:55,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-10-26 23:30:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:55,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:30:55,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:55,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:30:55,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:30:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:55,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:56,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2141 backedges. 465 proven. 148 refuted. 0 times theorem prover too weak. 1528 trivial. 0 not checked. [2020-10-26 23:30:56,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596620319] [2020-10-26 23:30:56,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:56,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:56,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188997891] [2020-10-26 23:30:56,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:56,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:56,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:56,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:56,073 INFO L87 Difference]: Start difference. First operand 4849 states and 5639 transitions. Second operand 7 states. [2020-10-26 23:30:57,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:57,921 INFO L93 Difference]: Finished difference Result 10438 states and 12286 transitions. [2020-10-26 23:30:57,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:30:57,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 856 [2020-10-26 23:30:57,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:57,945 INFO L225 Difference]: With dead ends: 10438 [2020-10-26 23:30:57,945 INFO L226 Difference]: Without dead ends: 5961 [2020-10-26 23:30:57,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:30:57,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2020-10-26 23:30:58,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 5953. [2020-10-26 23:30:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5953 states. [2020-10-26 23:30:58,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5953 states to 5953 states and 6920 transitions. [2020-10-26 23:30:58,086 INFO L78 Accepts]: Start accepts. Automaton has 5953 states and 6920 transitions. Word has length 856 [2020-10-26 23:30:58,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:58,087 INFO L481 AbstractCegarLoop]: Abstraction has 5953 states and 6920 transitions. [2020-10-26 23:30:58,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:58,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5953 states and 6920 transitions. [2020-10-26 23:30:58,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2020-10-26 23:30:58,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:58,100 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:58,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:30:58,101 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:58,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:58,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1325377584, now seen corresponding path program 1 times [2020-10-26 23:30:58,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:58,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415284321] [2020-10-26 23:30:58,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:58,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:58,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:59,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:00,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 904 [2020-10-26 23:31:03,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:03,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-26 23:31:03,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:03,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:31:03,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:31:03,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:03,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:03,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:03,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:31:03,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:03,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:31:03,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:03,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:31:03,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:03,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:31:03,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:03,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-26 23:31:03,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:31:03,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:04,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:31:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:04,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:04,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:04,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:31:04,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:04,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:31:04,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:04,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:04,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:31:04,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:04,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:04,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-26 23:31:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:04,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:04,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:04,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:31:04,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:04,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:31:04,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:04,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:04,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:31:04,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:04,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:04,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2020-10-26 23:31:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:04,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:04,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:04,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:31:04,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:04,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:31:04,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:31:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:04,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2189 backedges. 499 proven. 332 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2020-10-26 23:31:04,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415284321] [2020-10-26 23:31:04,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:04,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:04,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978333943] [2020-10-26 23:31:04,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:04,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:04,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:04,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:04,779 INFO L87 Difference]: Start difference. First operand 5953 states and 6920 transitions. Second operand 7 states. [2020-10-26 23:31:06,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:06,800 INFO L93 Difference]: Finished difference Result 12274 states and 14298 transitions. [2020-10-26 23:31:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:31:06,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 880 [2020-10-26 23:31:06,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:06,823 INFO L225 Difference]: With dead ends: 12274 [2020-10-26 23:31:06,823 INFO L226 Difference]: Without dead ends: 6693 [2020-10-26 23:31:06,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:31:06,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6693 states. [2020-10-26 23:31:06,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6693 to 6685. [2020-10-26 23:31:06,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6685 states. [2020-10-26 23:31:06,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6685 states to 6685 states and 7669 transitions. [2020-10-26 23:31:06,986 INFO L78 Accepts]: Start accepts. Automaton has 6685 states and 7669 transitions. Word has length 880 [2020-10-26 23:31:06,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:06,987 INFO L481 AbstractCegarLoop]: Abstraction has 6685 states and 7669 transitions. [2020-10-26 23:31:06,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:06,987 INFO L276 IsEmpty]: Start isEmpty. Operand 6685 states and 7669 transitions. [2020-10-26 23:31:07,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2020-10-26 23:31:07,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:07,003 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:31:07,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:31:07,003 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:07,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:07,004 INFO L82 PathProgramCache]: Analyzing trace with hash 651721244, now seen corresponding path program 1 times [2020-10-26 23:31:07,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:07,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189847808] [2020-10-26 23:31:07,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:07,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:07,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:07,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:09,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 943 [2020-10-26 23:31:12,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:12,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-26 23:31:12,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:31:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:31:12,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:12,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:12,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:12,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:31:12,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:12,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:31:12,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:12,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:31:12,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:12,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:31:12,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:12,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:31:12,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:31:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:31:12,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:31:12,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:31:12,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2020-10-26 23:31:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:13,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:13,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:31:13,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:13,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:31:13,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:13,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:13,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:31:13,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:13,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:13,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 815 [2020-10-26 23:31:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:13,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:13,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:13,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:31:13,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:13,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:31:13,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:31:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:13,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2403 backedges. 630 proven. 215 refuted. 0 times theorem prover too weak. 1558 trivial. 0 not checked. [2020-10-26 23:31:13,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189847808] [2020-10-26 23:31:13,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:13,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:13,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274133990] [2020-10-26 23:31:13,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:13,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:13,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:13,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:13,772 INFO L87 Difference]: Start difference. First operand 6685 states and 7669 transitions. Second operand 7 states. [2020-10-26 23:31:15,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:15,930 INFO L93 Difference]: Finished difference Result 13006 states and 14969 transitions. [2020-10-26 23:31:15,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:31:15,931 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 919 [2020-10-26 23:31:15,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:15,964 INFO L225 Difference]: With dead ends: 13006 [2020-10-26 23:31:15,964 INFO L226 Difference]: Without dead ends: 6693 [2020-10-26 23:31:15,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:31:15,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6693 states. [2020-10-26 23:31:16,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6693 to 6685. [2020-10-26 23:31:16,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6685 states. [2020-10-26 23:31:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6685 states to 6685 states and 7653 transitions. [2020-10-26 23:31:16,117 INFO L78 Accepts]: Start accepts. Automaton has 6685 states and 7653 transitions. Word has length 919 [2020-10-26 23:31:16,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:16,118 INFO L481 AbstractCegarLoop]: Abstraction has 6685 states and 7653 transitions. [2020-10-26 23:31:16,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:16,118 INFO L276 IsEmpty]: Start isEmpty. Operand 6685 states and 7653 transitions. [2020-10-26 23:31:16,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2020-10-26 23:31:16,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:16,133 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:16,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:31:16,133 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:16,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:16,136 INFO L82 PathProgramCache]: Analyzing trace with hash 2138334612, now seen corresponding path program 1 times [2020-10-26 23:31:16,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:16,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197375622] [2020-10-26 23:31:16,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:16,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:16,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:21,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:21,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 987 [2020-10-26 23:31:21,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:21,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-26 23:31:21,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:21,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:31:21,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:31:21,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-26 23:31:21,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:21,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:21,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:21,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:21,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:21,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:21,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:21,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:21,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:21,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:21,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:21,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:21,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:21,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:21,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:31:21,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:21,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:21,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:21,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:21,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:21,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:21,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:21,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:31:21,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:21,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:21,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:21,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:21,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:21,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:21,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:21,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:21,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:21,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:21,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:21,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:21,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:21,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:21,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:21,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:21,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:21,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:21,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:21,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:31:21,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:21,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:21,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:21,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:21,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:21,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:31:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:21,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:21,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:21,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:21,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:21,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:31:21,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:21,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:21,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:21,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:21,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:21,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:31:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:21,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:21,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:21,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:31:21,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:21,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:31:21,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:31:21,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:21,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:31:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:31:22,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-26 23:31:22,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:31:22,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:22,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:31:22,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:22,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:31:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:22,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:31:22,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:22,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:31:22,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:31:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2769 backedges. 1318 proven. 6 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2020-10-26 23:31:23,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197375622] [2020-10-26 23:31:23,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:23,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:31:23,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486655903] [2020-10-26 23:31:23,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:31:23,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:23,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:31:23,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:31:23,041 INFO L87 Difference]: Start difference. First operand 6685 states and 7653 transitions. Second operand 9 states. [2020-10-26 23:31:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:26,795 INFO L93 Difference]: Finished difference Result 15032 states and 17504 transitions. [2020-10-26 23:31:26,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 23:31:26,801 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 961 [2020-10-26 23:31:26,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:26,828 INFO L225 Difference]: With dead ends: 15032 [2020-10-26 23:31:26,829 INFO L226 Difference]: Without dead ends: 8719 [2020-10-26 23:31:26,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-26 23:31:26,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8719 states. [2020-10-26 23:31:26,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8719 to 8347. [2020-10-26 23:31:26,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8347 states. [2020-10-26 23:31:27,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8347 states to 8347 states and 9772 transitions. [2020-10-26 23:31:27,006 INFO L78 Accepts]: Start accepts. Automaton has 8347 states and 9772 transitions. Word has length 961 [2020-10-26 23:31:27,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:27,007 INFO L481 AbstractCegarLoop]: Abstraction has 8347 states and 9772 transitions. [2020-10-26 23:31:27,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:31:27,007 INFO L276 IsEmpty]: Start isEmpty. Operand 8347 states and 9772 transitions. [2020-10-26 23:31:27,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2020-10-26 23:31:27,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:27,026 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:31:27,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:31:27,027 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:27,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:27,028 INFO L82 PathProgramCache]: Analyzing trace with hash -800225004, now seen corresponding path program 1 times [2020-10-26 23:31:27,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:27,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876828346] [2020-10-26 23:31:27,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:27,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:27,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:28,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:32,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:32,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1044 [2020-10-26 23:31:32,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:31:32,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-26 23:31:32,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:31:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:31:32,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:32,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:32,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:32,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:32,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:32,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:32,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:32,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:32,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:32,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:32,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:32,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:32,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:32,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:32,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:32,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:32,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:32,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:32,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:32,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:32,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:32,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:31:32,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:32,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:32,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:32,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:32,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:32,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:32,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:32,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:32,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:32,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:31:32,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:32,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:32,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:32,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:32,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:32,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:32,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:32,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:31:32,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:32,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:32,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:31:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:32,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:32,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:32,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:32,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:32,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 23:31:32,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:32,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:32,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:32,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:31:32,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:32,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:31:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:32,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:32,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:32,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:31:32,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:32,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 23:31:32,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:32,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:32,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:32,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:31:32,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:32,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2020-10-26 23:31:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:33,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:33,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:33,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:31:33,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:33,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:31:33,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:33,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:33,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:31:33,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:33,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:33,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 914 [2020-10-26 23:31:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:33,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:33,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:33,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:31:33,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:33,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:31:33,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:31:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:33,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:33,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3006 backedges. 739 proven. 215 refuted. 0 times theorem prover too weak. 2052 trivial. 0 not checked. [2020-10-26 23:31:33,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876828346] [2020-10-26 23:31:33,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:33,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:33,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480022708] [2020-10-26 23:31:33,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:33,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:33,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:33,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:33,773 INFO L87 Difference]: Start difference. First operand 8347 states and 9772 transitions. Second operand 7 states. [2020-10-26 23:31:37,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:37,014 INFO L93 Difference]: Finished difference Result 17808 states and 20873 transitions. [2020-10-26 23:31:37,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:31:37,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1018 [2020-10-26 23:31:37,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:37,049 INFO L225 Difference]: With dead ends: 17808 [2020-10-26 23:31:37,049 INFO L226 Difference]: Without dead ends: 9649 [2020-10-26 23:31:37,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:31:37,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9649 states. [2020-10-26 23:31:37,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9649 to 9453. [2020-10-26 23:31:37,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9453 states. [2020-10-26 23:31:37,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9453 states to 9453 states and 10984 transitions. [2020-10-26 23:31:37,236 INFO L78 Accepts]: Start accepts. Automaton has 9453 states and 10984 transitions. Word has length 1018 [2020-10-26 23:31:37,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:37,237 INFO L481 AbstractCegarLoop]: Abstraction has 9453 states and 10984 transitions. [2020-10-26 23:31:37,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:37,237 INFO L276 IsEmpty]: Start isEmpty. Operand 9453 states and 10984 transitions. [2020-10-26 23:31:37,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2020-10-26 23:31:37,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:37,254 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:37,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:31:37,254 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:37,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:37,255 INFO L82 PathProgramCache]: Analyzing trace with hash -984851392, now seen corresponding path program 1 times [2020-10-26 23:31:37,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:37,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009113008] [2020-10-26 23:31:37,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:37,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:37,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:38,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:42,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:42,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1073 [2020-10-26 23:31:42,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:42,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 23:31:42,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:42,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:31:42,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:31:42,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:31:42,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:42,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:42,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:42,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:42,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:42,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:42,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:42,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:42,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:42,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:42,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:42,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:42,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:42,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:42,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:42,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:42,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:42,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:31:42,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:42,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:42,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:42,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:42,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:42,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:42,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:42,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:31:42,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:42,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:42,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:42,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:42,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:42,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:42,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:42,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:42,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:42,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:42,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:42,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:42,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:42,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:42,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:42,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:42,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:31:42,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:42,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:42,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:31:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:42,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:43,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:43,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:43,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:43,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:31:43,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:43,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:43,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:43,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:31:43,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:43,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:31:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:43,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:43,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:43,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:43,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:31:43,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:43,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-26 23:31:43,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:43,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:43,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:43,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:31:43,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:43,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-26 23:31:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:43,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:43,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:43,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:31:43,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:43,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:31:43,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:31:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:43,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:44,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 943 [2020-10-26 23:31:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:44,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:44,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:44,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:31:44,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:44,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:31:44,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:44,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:44,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:31:44,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:44,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3064 backedges. 768 proven. 244 refuted. 0 times theorem prover too weak. 2052 trivial. 0 not checked. [2020-10-26 23:31:44,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009113008] [2020-10-26 23:31:44,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:44,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:31:44,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321899795] [2020-10-26 23:31:44,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:31:44,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:44,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:31:44,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:31:44,846 INFO L87 Difference]: Start difference. First operand 9453 states and 10984 transitions. Second operand 8 states. [2020-10-26 23:31:47,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:47,205 INFO L93 Difference]: Finished difference Result 18728 states and 21799 transitions. [2020-10-26 23:31:47,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:31:47,206 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1047 [2020-10-26 23:31:47,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:47,234 INFO L225 Difference]: With dead ends: 18728 [2020-10-26 23:31:47,234 INFO L226 Difference]: Without dead ends: 9647 [2020-10-26 23:31:47,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:31:47,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9647 states. [2020-10-26 23:31:47,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9647 to 9635. [2020-10-26 23:31:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9635 states. [2020-10-26 23:31:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9635 states to 9635 states and 11168 transitions. [2020-10-26 23:31:47,429 INFO L78 Accepts]: Start accepts. Automaton has 9635 states and 11168 transitions. Word has length 1047 [2020-10-26 23:31:47,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:47,430 INFO L481 AbstractCegarLoop]: Abstraction has 9635 states and 11168 transitions. [2020-10-26 23:31:47,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:31:47,430 INFO L276 IsEmpty]: Start isEmpty. Operand 9635 states and 11168 transitions. [2020-10-26 23:31:47,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2020-10-26 23:31:47,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:47,448 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:47,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:31:47,448 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:47,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:47,449 INFO L82 PathProgramCache]: Analyzing trace with hash 609024028, now seen corresponding path program 1 times [2020-10-26 23:31:47,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:47,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065625961] [2020-10-26 23:31:47,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:47,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:48,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:48,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:50,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:52,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:52,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1104 [2020-10-26 23:31:52,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:52,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-26 23:31:52,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:31:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:31:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 387 [2020-10-26 23:31:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:52,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:52,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:52,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:52,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:52,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:52,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:52,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:52,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:52,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:52,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:53,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:53,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:53,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:53,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:31:53,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:53,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:53,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:53,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:53,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:53,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:53,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:53,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:53,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:53,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:53,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:31:53,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:53,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:53,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:53,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:53,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:53,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:53,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:53,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:53,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:53,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:53,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:31:53,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:53,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:53,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:53,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:53,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:53,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:53,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:53,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:53,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:31:53,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:53,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:53,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:53,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:53,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:53,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:31:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:53,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:53,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:53,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:53,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:53,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:31:53,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:53,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:53,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:53,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:53,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:53,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:31:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:53,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:53,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:53,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:31:53,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:53,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:31:53,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:31:53,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:53,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:31:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:53,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:53,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:53,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:31:53,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:53,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-26 23:31:53,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:31:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:31:53,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:54,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:31:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:54,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:54,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:54,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:31:54,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:54,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 23:31:54,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:31:54,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:54,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:31:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:54,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:54,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:54,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:31:54,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:54,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:31:54,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:31:54,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3584 backedges. 2042 proven. 164 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2020-10-26 23:31:55,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065625961] [2020-10-26 23:31:55,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:55,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:31:55,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504946642] [2020-10-26 23:31:55,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:31:55,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:55,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:31:55,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:31:55,385 INFO L87 Difference]: Start difference. First operand 9635 states and 11168 transitions. Second operand 11 states. [2020-10-26 23:31:59,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:59,363 INFO L93 Difference]: Finished difference Result 19276 states and 22363 transitions. [2020-10-26 23:31:59,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 23:31:59,364 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1076 [2020-10-26 23:31:59,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:59,391 INFO L225 Difference]: With dead ends: 19276 [2020-10-26 23:31:59,391 INFO L226 Difference]: Without dead ends: 10013 [2020-10-26 23:31:59,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:31:59,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10013 states. [2020-10-26 23:31:59,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10013 to 9451. [2020-10-26 23:31:59,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9451 states. [2020-10-26 23:31:59,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9451 states to 9451 states and 10964 transitions. [2020-10-26 23:31:59,582 INFO L78 Accepts]: Start accepts. Automaton has 9451 states and 10964 transitions. Word has length 1076 [2020-10-26 23:31:59,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:59,584 INFO L481 AbstractCegarLoop]: Abstraction has 9451 states and 10964 transitions. [2020-10-26 23:31:59,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:31:59,584 INFO L276 IsEmpty]: Start isEmpty. Operand 9451 states and 10964 transitions. [2020-10-26 23:31:59,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1118 [2020-10-26 23:31:59,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:59,603 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:59,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:31:59,604 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:59,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:59,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1212626972, now seen corresponding path program 1 times [2020-10-26 23:31:59,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:59,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505449790] [2020-10-26 23:31:59,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:59,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:00,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:00,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:04,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:04,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1145 [2020-10-26 23:32:04,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:32:04,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-26 23:32:04,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:04,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:32:04,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:32:04,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-26 23:32:04,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:04,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:04,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:04,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:04,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:04,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:04,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:32:04,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:04,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:04,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:04,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:05,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:05,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:05,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:05,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:32:05,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:05,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:05,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:05,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:05,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:05,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:05,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:05,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:32:05,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:05,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:05,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:05,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:05,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:05,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:05,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:05,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:05,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:05,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:05,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:05,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:32:05,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:05,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:32:05,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:05,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:32:05,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:05,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:32:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:05,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:05,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:05,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:05,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 23:32:05,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:05,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:05,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:05,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:32:05,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:05,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-10-26 23:32:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:05,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:05,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:05,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:32:05,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:05,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:32:05,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:05,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2020-10-26 23:32:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:05,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:05,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:32:05,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:05,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:32:05,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-26 23:32:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:05,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:05,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 834 [2020-10-26 23:32:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:05,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:05,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:05,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:05,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:32:05,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:32:05,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:05,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:05,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1013 [2020-10-26 23:32:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:05,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:05,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:32:05,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:05,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:32:05,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:05,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:05,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:32:05,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:05,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:06,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3860 backedges. 996 proven. 545 refuted. 0 times theorem prover too weak. 2319 trivial. 0 not checked. [2020-10-26 23:32:06,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505449790] [2020-10-26 23:32:06,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:06,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:32:06,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871744696] [2020-10-26 23:32:06,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:32:06,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:06,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:32:06,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:32:06,426 INFO L87 Difference]: Start difference. First operand 9451 states and 10964 transitions. Second operand 7 states. [2020-10-26 23:32:08,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:08,967 INFO L93 Difference]: Finished difference Result 20020 states and 23493 transitions. [2020-10-26 23:32:08,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:32:08,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1117 [2020-10-26 23:32:08,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:09,000 INFO L225 Difference]: With dead ends: 20020 [2020-10-26 23:32:09,000 INFO L226 Difference]: Without dead ends: 10941 [2020-10-26 23:32:09,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:32:09,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10941 states. [2020-10-26 23:32:09,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10941 to 9639. [2020-10-26 23:32:09,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9639 states. [2020-10-26 23:32:09,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9639 states to 9639 states and 10979 transitions. [2020-10-26 23:32:09,228 INFO L78 Accepts]: Start accepts. Automaton has 9639 states and 10979 transitions. Word has length 1117 [2020-10-26 23:32:09,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:09,229 INFO L481 AbstractCegarLoop]: Abstraction has 9639 states and 10979 transitions. [2020-10-26 23:32:09,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:32:09,229 INFO L276 IsEmpty]: Start isEmpty. Operand 9639 states and 10979 transitions. [2020-10-26 23:32:09,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1122 [2020-10-26 23:32:09,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:09,247 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 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, 3, 3, 3, 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] [2020-10-26 23:32:09,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:32:09,247 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:09,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:09,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1160425060, now seen corresponding path program 1 times [2020-10-26 23:32:09,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:09,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012093581] [2020-10-26 23:32:09,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:09,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:09,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:14,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:14,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1147 [2020-10-26 23:32:14,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:14,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-26 23:32:14,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:14,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:32:14,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:32:14,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 23:32:14,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:14,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:14,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:14,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:14,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:14,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:14,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:32:14,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:14,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:14,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:14,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:14,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:14,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:14,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:14,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:14,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:14,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:14,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:32:14,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:14,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:14,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:14,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:14,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:14,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:14,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:14,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:14,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:14,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:14,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:32:14,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:14,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:14,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:14,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:14,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:15,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:15,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:15,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:15,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:15,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:15,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:32:15,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:15,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:15,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:15,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:15,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:15,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:15,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:15,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:15,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:32:15,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:15,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:32:15,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:15,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:15,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:15,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:32:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:15,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:15,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:15,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:32:15,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:32:15,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:15,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:15,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:32:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:15,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:15,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:15,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:32:15,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:15,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 23:32:15,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:32:15,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:15,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:32:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:15,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:15,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:16,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:16,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:16,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-26 23:32:16,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:32:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:32:16,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:17,243 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2020-10-26 23:32:17,476 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2020-10-26 23:32:17,720 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2020-10-26 23:32:17,986 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-10-26 23:32:18,256 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-10-26 23:32:18,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1017 [2020-10-26 23:32:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:18,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:18,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:18,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:32:18,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:18,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:32:18,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:32:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:18,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:21,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3392 backedges. 1005 proven. 85 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2020-10-26 23:32:21,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012093581] [2020-10-26 23:32:21,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:21,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:32:21,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968771898] [2020-10-26 23:32:21,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:32:21,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:21,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:32:21,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:32:21,669 INFO L87 Difference]: Start difference. First operand 9639 states and 10979 transitions. Second operand 13 states. [2020-10-26 23:32:22,021 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-10-26 23:32:22,813 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2020-10-26 23:32:23,214 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2020-10-26 23:32:23,665 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-26 23:32:24,075 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-10-26 23:32:24,548 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2020-10-26 23:32:25,021 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2020-10-26 23:32:25,477 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 106 [2020-10-26 23:32:25,922 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2020-10-26 23:32:26,295 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-26 23:32:27,137 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2020-10-26 23:32:27,552 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2020-10-26 23:32:28,122 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2020-10-26 23:32:28,394 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 26 [2020-10-26 23:32:28,775 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2020-10-26 23:32:29,345 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2020-10-26 23:32:29,634 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-26 23:32:30,101 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 91 [2020-10-26 23:32:30,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:30,681 INFO L93 Difference]: Finished difference Result 19108 states and 21805 transitions. [2020-10-26 23:32:30,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-26 23:32:30,682 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1121 [2020-10-26 23:32:30,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:30,703 INFO L225 Difference]: With dead ends: 19108 [2020-10-26 23:32:30,703 INFO L226 Difference]: Without dead ends: 9653 [2020-10-26 23:32:30,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=280, Invalid=712, Unknown=0, NotChecked=0, Total=992 [2020-10-26 23:32:30,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9653 states. [2020-10-26 23:32:30,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9653 to 9637. [2020-10-26 23:32:30,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9637 states. [2020-10-26 23:32:30,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9637 states to 9637 states and 10922 transitions. [2020-10-26 23:32:30,890 INFO L78 Accepts]: Start accepts. Automaton has 9637 states and 10922 transitions. Word has length 1121 [2020-10-26 23:32:30,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:30,891 INFO L481 AbstractCegarLoop]: Abstraction has 9637 states and 10922 transitions. [2020-10-26 23:32:30,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:32:30,891 INFO L276 IsEmpty]: Start isEmpty. Operand 9637 states and 10922 transitions. [2020-10-26 23:32:30,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1217 [2020-10-26 23:32:30,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:30,916 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:30,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 23:32:30,916 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:30,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:30,917 INFO L82 PathProgramCache]: Analyzing trace with hash 591940640, now seen corresponding path program 1 times [2020-10-26 23:32:30,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:30,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859250048] [2020-10-26 23:32:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:31,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:32,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:35,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:36,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:36,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1246 [2020-10-26 23:32:36,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:32:36,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-26 23:32:36,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:36,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 23:32:36,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:32:36,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 306 [2020-10-26 23:32:36,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:36,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:36,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:36,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:36,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:36,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:36,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 23:32:36,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:36,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:36,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:36,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:36,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:36,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:36,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:36,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:32:36,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:36,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:36,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:36,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:36,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:36,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:36,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:36,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:36,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:36,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:36,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:36,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:36,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:36,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:36,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:36,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:32:36,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:36,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:36,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:36,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:36,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:36,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:36,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:36,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:36,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:36,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:36,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:32:36,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:36,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:36,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:36,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:36,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:36,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:36,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:36,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:32:36,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:36,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:36,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:36,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:36,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:36,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:36,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:36,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:36,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:36,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:36,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:32:36,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:36,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:36,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:36,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:32:36,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:36,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:32:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:36,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:37,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:37,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:37,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:37,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-26 23:32:37,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:37,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:32:37,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:37,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:32:37,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:37,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:32:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:37,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:37,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:37,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:37,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:32:37,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:37,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-26 23:32:37,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-26 23:32:37,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:37,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 997 [2020-10-26 23:32:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:37,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:37,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:37,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:32:37,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:37,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:32:37,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-26 23:32:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:37,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:37,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-26 23:32:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:37,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:38,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:38,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:32:38,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:38,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:32:38,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:38,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:32:38,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:38,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:38,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4576 backedges. 1675 proven. 392 refuted. 0 times theorem prover too weak. 2509 trivial. 0 not checked. [2020-10-26 23:32:38,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859250048] [2020-10-26 23:32:38,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:38,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:32:38,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053561255] [2020-10-26 23:32:38,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:32:38,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:38,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:32:38,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:32:38,984 INFO L87 Difference]: Start difference. First operand 9637 states and 10922 transitions. Second operand 11 states. [2020-10-26 23:32:40,345 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 13