/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:10:25,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:10:25,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:10:25,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:10:25,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:10:25,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:10:25,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:10:25,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:10:25,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:10:25,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:10:25,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:10:25,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:10:25,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:10:25,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:10:25,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:10:25,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:10:25,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:10:25,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:10:25,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:10:25,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:10:25,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:10:25,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:10:25,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:10:25,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:10:25,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:10:25,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:10:25,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:10:25,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:10:25,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:10:25,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:10:25,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:10:25,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:10:25,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:10:25,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:10:25,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:10:25,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:10:25,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:10:25,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:10:25,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:10:25,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:10:25,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:10:25,735 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 19:10:25,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:10:25,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:10:25,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:10:25,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:10:25,807 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:10:25,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:10:25,808 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:10:25,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:10:25,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:10:25,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:10:25,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:10:25,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:10:25,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:10:25,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:10:25,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:10:25,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:10:25,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:10:25,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:10:25,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:10:25,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:10:25,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:10:25,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:10:25,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:10:25,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:10:25,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:10:25,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:10:25,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:10:25,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:10:25,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:10:25,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:10:26,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:10:26,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:10:26,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:10:26,329 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:10:26,329 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:10:26,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label28.c [2020-10-27 19:10:26,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/345790474/361b6326395c4aa185c9792ceaa6b421/FLAGb30349ca6 [2020-10-27 19:10:27,616 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:10:27,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label28.c [2020-10-27 19:10:27,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/345790474/361b6326395c4aa185c9792ceaa6b421/FLAGb30349ca6 [2020-10-27 19:10:28,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/345790474/361b6326395c4aa185c9792ceaa6b421 [2020-10-27 19:10:28,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:10:28,053 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:10:28,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:10:28,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:10:28,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:10:28,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:10:28" (1/1) ... [2020-10-27 19:10:28,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c76db6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:28, skipping insertion in model container [2020-10-27 19:10:28,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:10:28" (1/1) ... [2020-10-27 19:10:28,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:10:28,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:10:29,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:10:29,320 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:10:29,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:10:29,991 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:10:29,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:29 WrapperNode [2020-10-27 19:10:29,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:10:29,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:10:29,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:10:29,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:10:30,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:29" (1/1) ... [2020-10-27 19:10:30,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:29" (1/1) ... [2020-10-27 19:10:30,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:29" (1/1) ... [2020-10-27 19:10:30,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:29" (1/1) ... [2020-10-27 19:10:30,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:29" (1/1) ... [2020-10-27 19:10:30,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:29" (1/1) ... [2020-10-27 19:10:30,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:29" (1/1) ... [2020-10-27 19:10:30,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:10:30,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:10:30,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:10:30,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:10:30,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:10:30,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:10:30,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:10:30,410 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:10:30,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 19:10:30,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 19:10:30,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 19:10:30,411 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:10:30,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 19:10:30,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 19:10:30,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 19:10:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:10:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:10:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:10:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:10:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:10:30,413 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:10:30,413 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:10:30,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:10:30,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:10:30,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:10:30,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:10:30,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:10:30,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:10:34,642 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:10:34,642 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:10:34,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:10:34 BoogieIcfgContainer [2020-10-27 19:10:34,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:10:34,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:10:34,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:10:34,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:10:34,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:10:28" (1/3) ... [2020-10-27 19:10:34,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2286b492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:10:34, skipping insertion in model container [2020-10-27 19:10:34,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:10:29" (2/3) ... [2020-10-27 19:10:34,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2286b492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:10:34, skipping insertion in model container [2020-10-27 19:10:34,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:10:34" (3/3) ... [2020-10-27 19:10:34,663 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label28.c [2020-10-27 19:10:34,677 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:10:34,685 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:10:34,699 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:10:34,736 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:10:34,736 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:10:34,736 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:10:34,736 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:10:34,736 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:10:34,737 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:10:34,737 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:10:34,737 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:10:34,774 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 19:10:34,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 19:10:34,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:10:34,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:10:34,787 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:10:34,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:10:34,793 INFO L82 PathProgramCache]: Analyzing trace with hash -901646568, now seen corresponding path program 1 times [2020-10-27 19:10:34,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:10:34,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856818752] [2020-10-27 19:10:34,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:10:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:35,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:35,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:35,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 19:10:35,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:35,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-10-27 19:10:35,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:10:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:10:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 19:10:35,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:10:35,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:10:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:36,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:36,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:36,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:10:36,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:36,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 19:10:36,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:10:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:10:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:10:36,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:10:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:10:36,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856818752] [2020-10-27 19:10:36,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:10:36,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:10:36,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214665585] [2020-10-27 19:10:36,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:10:36,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:10:36,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:10:36,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:10:36,155 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 19:10:48,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:10:48,855 INFO L93 Difference]: Finished difference Result 2989 states and 5773 transitions. [2020-10-27 19:10:48,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 19:10:48,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-27 19:10:48,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:10:48,903 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 19:10:48,903 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 19:10:48,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:10:48,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 19:10:49,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 19:10:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 19:10:49,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3228 transitions. [2020-10-27 19:10:49,161 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3228 transitions. Word has length 71 [2020-10-27 19:10:49,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:10:49,164 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3228 transitions. [2020-10-27 19:10:49,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:10:49,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3228 transitions. [2020-10-27 19:10:49,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 19:10:49,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:10:49,180 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:10:49,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:10:49,180 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:10:49,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:10:49,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1507283535, now seen corresponding path program 1 times [2020-10-27 19:10:49,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:10:49,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424328873] [2020-10-27 19:10:49,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:10:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:49,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:49,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:50,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:51,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:51,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 19:10:51,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:10:51,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2521 [2020-10-27 19:10:51,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:10:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 19:10:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:10:51,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:10:51,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:10:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:51,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:51,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:51,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:10:51,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:51,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:10:51,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:51,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:10:51,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:10:51,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:10:51,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:51,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:10:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:52,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:52,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:52,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 19:10:52,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:52,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 19:10:52,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:10:52,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:10:52,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 19:10:52,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:10:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:10:52,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424328873] [2020-10-27 19:10:52,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:10:52,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:10:52,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382572055] [2020-10-27 19:10:52,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:10:52,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:10:52,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:10:52,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:10:52,173 INFO L87 Difference]: Start difference. First operand 2136 states and 3228 transitions. Second operand 5 states. [2020-10-27 19:11:01,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:11:01,474 INFO L93 Difference]: Finished difference Result 4983 states and 7828 transitions. [2020-10-27 19:11:01,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:11:01,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-27 19:11:01,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:11:01,501 INFO L225 Difference]: With dead ends: 4983 [2020-10-27 19:11:01,501 INFO L226 Difference]: Without dead ends: 2853 [2020-10-27 19:11:01,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:11:01,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2853 states. [2020-10-27 19:11:01,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2853 to 2849. [2020-10-27 19:11:01,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2020-10-27 19:11:01,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 4089 transitions. [2020-10-27 19:11:01,608 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 4089 transitions. Word has length 141 [2020-10-27 19:11:01,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:11:01,609 INFO L481 AbstractCegarLoop]: Abstraction has 2849 states and 4089 transitions. [2020-10-27 19:11:01,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:11:01,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 4089 transitions. [2020-10-27 19:11:01,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 19:11:01,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:11:01,612 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:11:01,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:11:01,613 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:11:01,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:11:01,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1342007979, now seen corresponding path program 1 times [2020-10-27 19:11:01,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:11:01,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536523583] [2020-10-27 19:11:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:11:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:01,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:01,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:02,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:03,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:03,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 19:11:03,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:11:03,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1465 [2020-10-27 19:11:03,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:11:03,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 19:11:03,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 19:11:03,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:03,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:11:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:03,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:03,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:03,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:11:03,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:03,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:11:03,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:11:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:11:03,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:03,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:11:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:03,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:03,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:03,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 19:11:03,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:03,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 19:11:03,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:11:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 19:11:03,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:11:03,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536523583] [2020-10-27 19:11:03,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:11:03,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:11:03,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767894330] [2020-10-27 19:11:03,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:11:03,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:11:03,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:11:03,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:11:03,501 INFO L87 Difference]: Start difference. First operand 2849 states and 4089 transitions. Second operand 5 states. [2020-10-27 19:11:09,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:11:09,327 INFO L93 Difference]: Finished difference Result 5714 states and 8209 transitions. [2020-10-27 19:11:09,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:11:09,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-27 19:11:09,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:11:09,351 INFO L225 Difference]: With dead ends: 5714 [2020-10-27 19:11:09,351 INFO L226 Difference]: Without dead ends: 2853 [2020-10-27 19:11:09,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:11:09,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2853 states. [2020-10-27 19:11:09,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2853 to 2849. [2020-10-27 19:11:09,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2020-10-27 19:11:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 4086 transitions. [2020-10-27 19:11:09,444 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 4086 transitions. Word has length 159 [2020-10-27 19:11:09,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:11:09,446 INFO L481 AbstractCegarLoop]: Abstraction has 2849 states and 4086 transitions. [2020-10-27 19:11:09,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:11:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 4086 transitions. [2020-10-27 19:11:09,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-27 19:11:09,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:11:09,454 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:11:09,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:11:09,455 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:11:09,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:11:09,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1008401747, now seen corresponding path program 1 times [2020-10-27 19:11:09,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:11:09,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000296488] [2020-10-27 19:11:09,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:11:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:09,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:09,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:10,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:10,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-27 19:11:10,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:11:10,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1125 [2020-10-27 19:11:10,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:11:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 19:11:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:11:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:11:10,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:11:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:10,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:10,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:10,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:11:10,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:10,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:11:10,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:10,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:11:10,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:10,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:11:10,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:10,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:11:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:10,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:10,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:10,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 19:11:10,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:10,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 19:11:10,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:10,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:11:10,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:10,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 19:11:10,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:11:11,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000296488] [2020-10-27 19:11:11,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:11:11,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 19:11:11,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836034086] [2020-10-27 19:11:11,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:11:11,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:11:11,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:11:11,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:11:11,076 INFO L87 Difference]: Start difference. First operand 2849 states and 4086 transitions. Second operand 6 states. [2020-10-27 19:11:22,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:11:22,697 INFO L93 Difference]: Finished difference Result 6406 states and 9548 transitions. [2020-10-27 19:11:22,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 19:11:22,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-10-27 19:11:22,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:11:22,724 INFO L225 Difference]: With dead ends: 6406 [2020-10-27 19:11:22,725 INFO L226 Difference]: Without dead ends: 3563 [2020-10-27 19:11:22,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:11:22,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2020-10-27 19:11:22,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 3559. [2020-10-27 19:11:22,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3559 states. [2020-10-27 19:11:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3559 states to 3559 states and 5215 transitions. [2020-10-27 19:11:22,833 INFO L78 Accepts]: Start accepts. Automaton has 3559 states and 5215 transitions. Word has length 203 [2020-10-27 19:11:22,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:11:22,834 INFO L481 AbstractCegarLoop]: Abstraction has 3559 states and 5215 transitions. [2020-10-27 19:11:22,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:11:22,834 INFO L276 IsEmpty]: Start isEmpty. Operand 3559 states and 5215 transitions. [2020-10-27 19:11:22,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-27 19:11:22,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:11:22,839 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:11:22,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:11:22,839 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:11:22,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:11:22,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1400325551, now seen corresponding path program 1 times [2020-10-27 19:11:22,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:11:22,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499911449] [2020-10-27 19:11:22,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:11:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:22,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:23,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:23,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:24,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:24,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-27 19:11:24,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:11:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1790 [2020-10-27 19:11:24,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:11:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-27 19:11:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:11:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:24,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:11:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:24,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:24,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:24,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:11:24,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:24,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:11:24,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:24,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:11:24,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:24,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:11:24,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:24,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:11:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:24,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:24,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:24,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 19:11:24,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:24,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 19:11:24,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:24,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:11:24,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:24,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 19:11:24,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:11:25,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499911449] [2020-10-27 19:11:25,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:11:25,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:11:25,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147420625] [2020-10-27 19:11:25,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:11:25,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:11:25,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:11:25,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:11:25,127 INFO L87 Difference]: Start difference. First operand 3559 states and 5215 transitions. Second operand 5 states. [2020-10-27 19:11:35,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:11:35,530 INFO L93 Difference]: Finished difference Result 10663 states and 15799 transitions. [2020-10-27 19:11:35,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:11:35,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-27 19:11:35,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:11:35,570 INFO L225 Difference]: With dead ends: 10663 [2020-10-27 19:11:35,570 INFO L226 Difference]: Without dead ends: 7110 [2020-10-27 19:11:35,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:11:35,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7110 states. [2020-10-27 19:11:35,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7110 to 7106. [2020-10-27 19:11:35,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7106 states. [2020-10-27 19:11:35,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7106 states to 7106 states and 9427 transitions. [2020-10-27 19:11:35,785 INFO L78 Accepts]: Start accepts. Automaton has 7106 states and 9427 transitions. Word has length 221 [2020-10-27 19:11:35,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:11:35,787 INFO L481 AbstractCegarLoop]: Abstraction has 7106 states and 9427 transitions. [2020-10-27 19:11:35,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:11:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 7106 states and 9427 transitions. [2020-10-27 19:11:35,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-27 19:11:35,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:11:35,792 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:11:35,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:11:35,792 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:11:35,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:11:35,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1340558020, now seen corresponding path program 1 times [2020-10-27 19:11:35,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:11:35,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283969478] [2020-10-27 19:11:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:11:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:35,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:36,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:36,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:36,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-27 19:11:36,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:11:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1091 [2020-10-27 19:11:36,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:11:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-27 19:11:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:11:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:37,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:11:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:37,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:37,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:37,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:11:37,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:37,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:11:37,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:11:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:11:37,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:37,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:11:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:37,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:37,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:37,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 19:11:37,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:37,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 19:11:37,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:37,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:11:37,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:37,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:11:37,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:37,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 19:11:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:37,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:37,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:37,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 19:11:37,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:37,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 19:11:37,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:37,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:11:37,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:37,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 19:11:37,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-27 19:11:37,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283969478] [2020-10-27 19:11:37,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:11:37,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:11:37,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991249498] [2020-10-27 19:11:37,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:11:37,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:11:37,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:11:37,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:11:37,344 INFO L87 Difference]: Start difference. First operand 7106 states and 9427 transitions. Second operand 5 states. [2020-10-27 19:11:48,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:11:48,228 INFO L93 Difference]: Finished difference Result 19885 states and 26903 transitions. [2020-10-27 19:11:48,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:11:48,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2020-10-27 19:11:48,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:11:48,339 INFO L225 Difference]: With dead ends: 19885 [2020-10-27 19:11:48,339 INFO L226 Difference]: Without dead ends: 12785 [2020-10-27 19:11:48,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:11:48,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12785 states. [2020-10-27 19:11:48,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12785 to 12777. [2020-10-27 19:11:48,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12777 states. [2020-10-27 19:11:48,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12777 states to 12777 states and 16290 transitions. [2020-10-27 19:11:48,651 INFO L78 Accepts]: Start accepts. Automaton has 12777 states and 16290 transitions. Word has length 232 [2020-10-27 19:11:48,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:11:48,652 INFO L481 AbstractCegarLoop]: Abstraction has 12777 states and 16290 transitions. [2020-10-27 19:11:48,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:11:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 12777 states and 16290 transitions. [2020-10-27 19:11:48,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-27 19:11:48,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:11:48,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:11:48,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:11:48,660 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:11:48,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:11:48,662 INFO L82 PathProgramCache]: Analyzing trace with hash -714759039, now seen corresponding path program 1 times [2020-10-27 19:11:48,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:11:48,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229604724] [2020-10-27 19:11:48,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:11:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:49,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:49,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:50,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:50,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-27 19:11:50,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:11:50,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1413 [2020-10-27 19:11:50,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:50,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:11:50,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-27 19:11:50,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:11:50,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:50,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:11:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:50,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:50,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:50,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:11:50,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:50,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:11:50,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:50,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:11:50,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:50,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:11:50,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:50,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:11:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:50,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:50,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:50,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 19:11:50,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:50,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-27 19:11:50,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:11:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-27 19:11:50,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:11:50,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229604724] [2020-10-27 19:11:50,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:11:50,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:11:50,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577612892] [2020-10-27 19:11:50,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:11:50,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:11:50,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:11:50,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:11:50,590 INFO L87 Difference]: Start difference. First operand 12777 states and 16290 transitions. Second operand 5 states. [2020-10-27 19:12:01,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:12:01,703 INFO L93 Difference]: Finished difference Result 30511 states and 39812 transitions. [2020-10-27 19:12:01,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:12:01,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2020-10-27 19:12:01,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:12:01,767 INFO L225 Difference]: With dead ends: 30511 [2020-10-27 19:12:01,767 INFO L226 Difference]: Without dead ends: 17740 [2020-10-27 19:12:01,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:12:01,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17740 states. [2020-10-27 19:12:02,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17740 to 17732. [2020-10-27 19:12:02,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17732 states. [2020-10-27 19:12:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17732 states to 17732 states and 22103 transitions. [2020-10-27 19:12:02,196 INFO L78 Accepts]: Start accepts. Automaton has 17732 states and 22103 transitions. Word has length 245 [2020-10-27 19:12:02,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:12:02,197 INFO L481 AbstractCegarLoop]: Abstraction has 17732 states and 22103 transitions. [2020-10-27 19:12:02,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:12:02,197 INFO L276 IsEmpty]: Start isEmpty. Operand 17732 states and 22103 transitions. [2020-10-27 19:12:02,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-27 19:12:02,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:12:02,211 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-27 19:12:02,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:12:02,211 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:12:02,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:12:02,212 INFO L82 PathProgramCache]: Analyzing trace with hash 845340421, now seen corresponding path program 1 times [2020-10-27 19:12:02,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:12:02,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43544733] [2020-10-27 19:12:02,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:12:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:02,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:02,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:02,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:06,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:07,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:07,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-27 19:12:07,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:12:07,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 19:12:07,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:07,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:12:07,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 269 [2020-10-27 19:12:07,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:12:07,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:07,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:12:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:07,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:07,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:07,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:12:07,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:07,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:12:07,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:07,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:12:07,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:07,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:12:07,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:07,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:12:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:07,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:07,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:07,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 19:12:07,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:07,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 19:12:07,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:07,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:12:07,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:07,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:12:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:07,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 19:12:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:07,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:07,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:07,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 19:12:07,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:07,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 19:12:07,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:12:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:12:07,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:07,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-27 19:12:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:07,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:07,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:07,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 19:12:07,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:07,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 19:12:07,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:07,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:12:07,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:07,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 19:12:07,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:07,786 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 192 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-27 19:12:07,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43544733] [2020-10-27 19:12:07,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:12:07,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:12:07,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317961984] [2020-10-27 19:12:07,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:12:07,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:12:07,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:12:07,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:12:07,790 INFO L87 Difference]: Start difference. First operand 17732 states and 22103 transitions. Second operand 5 states. [2020-10-27 19:12:20,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:12:20,232 INFO L93 Difference]: Finished difference Result 48212 states and 61341 transitions. [2020-10-27 19:12:20,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:12:20,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-27 19:12:20,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:12:20,356 INFO L225 Difference]: With dead ends: 48212 [2020-10-27 19:12:20,356 INFO L226 Difference]: Without dead ends: 30486 [2020-10-27 19:12:20,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:12:20,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30486 states. [2020-10-27 19:12:20,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30486 to 30478. [2020-10-27 19:12:20,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30478 states. [2020-10-27 19:12:21,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30478 states to 30478 states and 36800 transitions. [2020-10-27 19:12:21,033 INFO L78 Accepts]: Start accepts. Automaton has 30478 states and 36800 transitions. Word has length 326 [2020-10-27 19:12:21,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:12:21,034 INFO L481 AbstractCegarLoop]: Abstraction has 30478 states and 36800 transitions. [2020-10-27 19:12:21,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:12:21,034 INFO L276 IsEmpty]: Start isEmpty. Operand 30478 states and 36800 transitions. [2020-10-27 19:12:21,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-27 19:12:21,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:12:21,066 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:12:21,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:12:21,067 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:12:21,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:12:21,068 INFO L82 PathProgramCache]: Analyzing trace with hash 570772640, now seen corresponding path program 1 times [2020-10-27 19:12:21,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:12:21,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132898487] [2020-10-27 19:12:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:12:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:21,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:21,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:21,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:23,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:23,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:26,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:26,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 448 [2020-10-27 19:12:26,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 19:12:26,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 19:12:26,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:12:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 375 [2020-10-27 19:12:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:12:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:26,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:12:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:26,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:26,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:26,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:12:26,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:26,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:12:26,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:26,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:12:26,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:26,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:12:26,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:26,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:12:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:26,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:26,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:26,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 19:12:26,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:26,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 19:12:26,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:12:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:12:26,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:26,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-27 19:12:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:26,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:26,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:26,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 19:12:26,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:26,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 19:12:26,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:26,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:12:26,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:26,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-27 19:12:26,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:26,770 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-27 19:12:26,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132898487] [2020-10-27 19:12:26,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:12:26,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:12:26,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333099742] [2020-10-27 19:12:26,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:12:26,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:12:26,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:12:26,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:12:26,774 INFO L87 Difference]: Start difference. First operand 30478 states and 36800 transitions. Second operand 5 states. [2020-10-27 19:12:38,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:12:38,486 INFO L93 Difference]: Finished difference Result 74419 states and 92072 transitions. [2020-10-27 19:12:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:12:38,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 434 [2020-10-27 19:12:38,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:12:38,642 INFO L225 Difference]: With dead ends: 74419 [2020-10-27 19:12:38,643 INFO L226 Difference]: Without dead ends: 43947 [2020-10-27 19:12:38,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:12:38,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43947 states. [2020-10-27 19:12:39,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43947 to 43939. [2020-10-27 19:12:39,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43939 states. [2020-10-27 19:12:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43939 states to 43939 states and 52840 transitions. [2020-10-27 19:12:39,729 INFO L78 Accepts]: Start accepts. Automaton has 43939 states and 52840 transitions. Word has length 434 [2020-10-27 19:12:39,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:12:39,730 INFO L481 AbstractCegarLoop]: Abstraction has 43939 states and 52840 transitions. [2020-10-27 19:12:39,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:12:39,730 INFO L276 IsEmpty]: Start isEmpty. Operand 43939 states and 52840 transitions. [2020-10-27 19:12:39,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-27 19:12:39,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:12:39,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:12:39,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:12:39,776 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:12:39,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:12:39,777 INFO L82 PathProgramCache]: Analyzing trace with hash -591724513, now seen corresponding path program 1 times [2020-10-27 19:12:39,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:12:39,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026341526] [2020-10-27 19:12:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:12:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:39,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:40,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:41,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:42,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:42,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-27 19:12:42,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:12:42,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3046 [2020-10-27 19:12:42,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:42,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:12:42,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 400 [2020-10-27 19:12:42,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 19:12:42,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:43,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:12:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:43,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:43,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:12:43,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:43,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:12:43,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:43,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:12:43,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:43,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:12:43,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:43,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:12:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:43,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:43,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:43,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-27 19:12:43,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:43,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-27 19:12:43,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:12:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 385 [2020-10-27 19:12:43,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:43,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:12:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:43,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:43,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:12:43,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 19:12:43,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:12:43,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 19:12:43,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:12:43,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:12:43,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:12:43,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 19:12:43,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:12:43,743 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:12:43,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026341526] [2020-10-27 19:12:43,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:12:43,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:12:43,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936368567] [2020-10-27 19:12:43,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:12:43,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:12:43,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:12:43,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:12:43,746 INFO L87 Difference]: Start difference. First operand 43939 states and 52840 transitions. Second operand 5 states. [2020-10-27 19:12:56,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:12:56,121 INFO L93 Difference]: Finished difference Result 99892 states and 121237 transitions. [2020-10-27 19:12:56,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:12:56,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 462 [2020-10-27 19:12:56,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:12:56,480 INFO L225 Difference]: With dead ends: 99892 [2020-10-27 19:12:56,481 INFO L226 Difference]: Without dead ends: 55959 [2020-10-27 19:12:56,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:12:56,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55959 states. [2020-10-27 19:12:57,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55959 to 55951. [2020-10-27 19:12:57,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55951 states. [2020-10-27 19:12:57,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55951 states to 55951 states and 66293 transitions. [2020-10-27 19:12:57,869 INFO L78 Accepts]: Start accepts. Automaton has 55951 states and 66293 transitions. Word has length 462 [2020-10-27 19:12:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:12:57,871 INFO L481 AbstractCegarLoop]: Abstraction has 55951 states and 66293 transitions. [2020-10-27 19:12:57,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:12:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 55951 states and 66293 transitions. [2020-10-27 19:12:57,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2020-10-27 19:12:57,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:12:57,945 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:12:57,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:12:57,946 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:12:57,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:12:57,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1053176989, now seen corresponding path program 1 times [2020-10-27 19:12:57,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:12:57,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913798601] [2020-10-27 19:12:57,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:12:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:12:58,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:58,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:12:58,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:03,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:03,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 577 [2020-10-27 19:13:03,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:13:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 19:13:03,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:13:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 19:13:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 418 [2020-10-27 19:13:03,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:03,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:13:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:03,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:03,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:03,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:13:03,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:13:03,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:13:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:13:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:03,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:13:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:03,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:03,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:03,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 19:13:03,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:03,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 19:13:03,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:03,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:13:03,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:03,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:13:03,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:03,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 19:13:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:03,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:04,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:04,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-27 19:13:04,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:04,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 734 [2020-10-27 19:13:04,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:04,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:13:04,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:13:04,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 419 [2020-10-27 19:13:04,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:04,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:13:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:04,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:04,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:04,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 19:13:04,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:04,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-27 19:13:04,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:04,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:13:04,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:13:04,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-27 19:13:04,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:13:05,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913798601] [2020-10-27 19:13:05,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:13:05,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:13:05,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627645160] [2020-10-27 19:13:05,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:13:05,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:13:05,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:13:05,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:13:05,140 INFO L87 Difference]: Start difference. First operand 55951 states and 66293 transitions. Second operand 7 states. [2020-10-27 19:13:33,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:13:33,221 INFO L93 Difference]: Finished difference Result 145298 states and 182146 transitions. [2020-10-27 19:13:33,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:13:33,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 561 [2020-10-27 19:13:33,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:13:33,642 INFO L225 Difference]: With dead ends: 145298 [2020-10-27 19:13:33,643 INFO L226 Difference]: Without dead ends: 89353 [2020-10-27 19:13:33,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:13:33,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89353 states. [2020-10-27 19:13:36,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89353 to 88869. [2020-10-27 19:13:36,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88869 states. [2020-10-27 19:13:36,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88869 states to 88869 states and 106631 transitions. [2020-10-27 19:13:36,619 INFO L78 Accepts]: Start accepts. Automaton has 88869 states and 106631 transitions. Word has length 561 [2020-10-27 19:13:36,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:13:36,621 INFO L481 AbstractCegarLoop]: Abstraction has 88869 states and 106631 transitions. [2020-10-27 19:13:36,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:13:36,621 INFO L276 IsEmpty]: Start isEmpty. Operand 88869 states and 106631 transitions. [2020-10-27 19:13:36,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2020-10-27 19:13:36,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:13:36,727 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:13:36,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 19:13:36,727 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:13:36,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:13:36,728 INFO L82 PathProgramCache]: Analyzing trace with hash -577679695, now seen corresponding path program 1 times [2020-10-27 19:13:36,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:13:36,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587470839] [2020-10-27 19:13:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:13:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:36,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:37,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:37,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:40,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:41,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:41,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:41,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 651 [2020-10-27 19:13:41,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 19:13:41,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 19:13:41,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:41,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:13:41,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 575 [2020-10-27 19:13:41,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 19:13:41,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:42,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:13:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:42,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:42,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:42,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:13:42,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:42,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:13:42,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:42,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:13:42,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:42,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:13:42,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:42,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:13:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:42,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:42,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:42,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 19:13:42,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:42,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 19:13:42,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:42,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:13:42,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:42,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:13:42,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:42,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-27 19:13:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:42,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:42,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:42,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-27 19:13:42,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:42,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-27 19:13:42,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:13:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 410 [2020-10-27 19:13:42,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:42,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:13:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:42,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:42,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:13:42,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 19:13:42,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:13:42,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 19:13:42,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:13:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:13:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:13:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 19:13:42,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:13:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-27 19:13:43,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587470839] [2020-10-27 19:13:43,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:13:43,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:13:43,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802614447] [2020-10-27 19:13:43,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:13:43,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:13:43,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:13:43,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:13:43,333 INFO L87 Difference]: Start difference. First operand 88869 states and 106631 transitions. Second operand 5 states. [2020-10-27 19:13:49,494 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-27 19:13:52,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:13:52,395 INFO L93 Difference]: Finished difference Result 175670 states and 210764 transitions. [2020-10-27 19:13:52,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:13:52,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 635 [2020-10-27 19:13:52,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:13:52,766 INFO L225 Difference]: With dead ends: 175670 [2020-10-27 19:13:52,767 INFO L226 Difference]: Without dead ends: 86770 [2020-10-27 19:13:52,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:13:53,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86770 states. [2020-10-27 19:13:54,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86770 to 86756. [2020-10-27 19:13:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86756 states. [2020-10-27 19:13:55,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86756 states to 86756 states and 103840 transitions. [2020-10-27 19:13:55,440 INFO L78 Accepts]: Start accepts. Automaton has 86756 states and 103840 transitions. Word has length 635 [2020-10-27 19:13:55,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:13:55,441 INFO L481 AbstractCegarLoop]: Abstraction has 86756 states and 103840 transitions. [2020-10-27 19:13:55,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:13:55,442 INFO L276 IsEmpty]: Start isEmpty. Operand 86756 states and 103840 transitions. [2020-10-27 19:13:55,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2020-10-27 19:13:55,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:13:55,535 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:13:55,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 19:13:55,535 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:13:55,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:13:55,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1392243626, now seen corresponding path program 1 times [2020-10-27 19:13:55,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:13:55,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900484252] [2020-10-27 19:13:55,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:13:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:13:55,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:55,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:58,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:58,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:13:59,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking...