/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 11:08:00,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 11:08:00,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 11:08:00,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 11:08:00,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 11:08:00,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 11:08:00,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 11:08:00,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 11:08:00,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 11:08:00,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 11:08:00,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 11:08:00,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 11:08:00,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 11:08:00,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 11:08:00,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 11:08:00,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 11:08:00,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 11:08:00,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 11:08:00,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 11:08:00,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 11:08:00,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 11:08:00,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 11:08:00,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 11:08:00,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 11:08:00,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 11:08:00,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 11:08:00,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 11:08:00,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 11:08:00,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 11:08:00,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 11:08:00,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 11:08:00,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 11:08:00,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 11:08:00,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 11:08:00,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 11:08:00,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 11:08:00,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 11:08:00,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 11:08:00,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 11:08:00,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 11:08:00,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 11:08:00,889 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 11:08:00,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 11:08:00,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 11:08:00,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 11:08:00,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 11:08:00,946 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 11:08:00,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 11:08:00,947 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 11:08:00,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 11:08:00,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 11:08:00,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 11:08:00,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 11:08:00,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 11:08:00,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 11:08:00,949 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 11:08:00,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 11:08:00,949 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 11:08:00,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 11:08:00,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 11:08:00,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 11:08:00,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 11:08:00,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 11:08:00,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 11:08:00,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 11:08:00,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 11:08:00,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 11:08:00,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 11:08:00,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 11:08:00,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 11:08:00,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 11:08:00,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 11:08:01,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 11:08:01,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 11:08:01,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 11:08:01,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 11:08:01,429 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 11:08:01,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label51.c [2020-10-28 11:08:01,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e927da5f8/e03613870b6d41f192a6501d2fb5af9b/FLAG5430338ea [2020-10-28 11:08:02,900 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 11:08:02,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label51.c [2020-10-28 11:08:02,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e927da5f8/e03613870b6d41f192a6501d2fb5af9b/FLAG5430338ea [2020-10-28 11:08:03,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e927da5f8/e03613870b6d41f192a6501d2fb5af9b [2020-10-28 11:08:03,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 11:08:03,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 11:08:03,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 11:08:03,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 11:08:03,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 11:08:03,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:08:03" (1/1) ... [2020-10-28 11:08:03,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e1373c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:03, skipping insertion in model container [2020-10-28 11:08:03,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:08:03" (1/1) ... [2020-10-28 11:08:03,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 11:08:03,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 11:08:05,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 11:08:05,675 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 11:08:07,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 11:08:07,269 INFO L208 MainTranslator]: Completed translation [2020-10-28 11:08:07,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:07 WrapperNode [2020-10-28 11:08:07,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 11:08:07,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 11:08:07,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 11:08:07,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 11:08:07,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:07" (1/1) ... [2020-10-28 11:08:07,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:07" (1/1) ... [2020-10-28 11:08:07,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:07" (1/1) ... [2020-10-28 11:08:07,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:07" (1/1) ... [2020-10-28 11:08:07,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:07" (1/1) ... [2020-10-28 11:08:07,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:07" (1/1) ... [2020-10-28 11:08:07,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:07" (1/1) ... [2020-10-28 11:08:07,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 11:08:07,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 11:08:07,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 11:08:07,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 11:08:07,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 11:08:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 11:08:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 11:08:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 11:08:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 11:08:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 11:08:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 11:08:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 11:08:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 11:08:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 11:08:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 11:08:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 11:08:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 11:08:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 11:08:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 11:08:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 11:08:07,826 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 11:08:07,826 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 11:08:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 11:08:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 11:08:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 11:08:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 11:08:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 11:08:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 11:08:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 11:08:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 11:08:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 11:08:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 11:08:16,163 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 11:08:16,164 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 11:08:16,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:08:16 BoogieIcfgContainer [2020-10-28 11:08:16,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 11:08:16,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 11:08:16,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 11:08:16,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 11:08:16,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:08:03" (1/3) ... [2020-10-28 11:08:16,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b8f7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:08:16, skipping insertion in model container [2020-10-28 11:08:16,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:07" (2/3) ... [2020-10-28 11:08:16,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b8f7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:08:16, skipping insertion in model container [2020-10-28 11:08:16,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:08:16" (3/3) ... [2020-10-28 11:08:16,179 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label51.c [2020-10-28 11:08:16,192 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 11:08:16,198 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 11:08:16,213 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 11:08:16,251 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 11:08:16,252 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 11:08:16,252 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 11:08:16,252 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 11:08:16,252 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 11:08:16,252 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 11:08:16,252 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 11:08:16,253 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 11:08:16,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-28 11:08:16,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-28 11:08:16,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:08:16,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:08:16,375 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:08:16,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:08:16,392 INFO L82 PathProgramCache]: Analyzing trace with hash -14942760, now seen corresponding path program 1 times [2020-10-28 11:08:16,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:08:16,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90577163] [2020-10-28 11:08:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:08:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:08:18,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:08:20,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:08:22,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:08:22,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1014 [2020-10-28 11:08:22,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 11:08:22,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5242 [2020-10-28 11:08:22,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:08:22,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:08:22,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 11:08:22,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 11:08:22,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1005 [2020-10-28 11:08:22,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 11:08:25,221 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:08:25,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:08:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:08:25,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:08:25,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:08:25,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:08:25,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:08:25,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 11:08:25,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:08:25,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:08:25,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:08:25,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:08:25,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 11:08:25,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 11:08:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 11:08:26,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90577163] [2020-10-28 11:08:26,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 11:08:26,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 11:08:26,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623600107] [2020-10-28 11:08:26,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 11:08:26,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 11:08:26,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 11:08:26,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 11:08:26,461 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 4 states. [2020-10-28 11:08:26,835 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:08:44,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 11:08:44,397 INFO L93 Difference]: Finished difference Result 3770 states and 7012 transitions. [2020-10-28 11:08:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 11:08:44,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 996 [2020-10-28 11:08:44,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 11:08:44,460 INFO L225 Difference]: With dead ends: 3770 [2020-10-28 11:08:44,460 INFO L226 Difference]: Without dead ends: 2387 [2020-10-28 11:08:44,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 11:08:44,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2020-10-28 11:08:44,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 2374. [2020-10-28 11:08:44,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2020-10-28 11:08:44,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3972 transitions. [2020-10-28 11:08:44,682 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3972 transitions. Word has length 996 [2020-10-28 11:08:44,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 11:08:44,686 INFO L481 AbstractCegarLoop]: Abstraction has 2374 states and 3972 transitions. [2020-10-28 11:08:44,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 11:08:44,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3972 transitions. [2020-10-28 11:08:44,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2020-10-28 11:08:44,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:08:44,728 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:08:44,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 11:08:44,729 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:08:44,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:08:44,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1683848431, now seen corresponding path program 1 times [2020-10-28 11:08:44,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:08:44,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072317096] [2020-10-28 11:08:44,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:08:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:08:44,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:08:47,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:08:49,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:08:49,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1028 [2020-10-28 11:08:49,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 11:08:49,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 11:08:49,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:08:49,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:08:49,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 11:08:49,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 11:08:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 11:08:49,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 11:08:50,651 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:08:50,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:08:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:08:50,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:08:50,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:08:50,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:08:50,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:08:50,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 11:08:50,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:08:50,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:08:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:08:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:08:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 11:08:50,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 11:08:50,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 11:08:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:08:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:08:50,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:08:50,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 11:08:50,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:08:50,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 11:08:50,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:08:50,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:08:50,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:08:50,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 11:08:50,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 11:08:50,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:08:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 11:08:51,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072317096] [2020-10-28 11:08:51,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 11:08:51,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 11:08:51,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365947016] [2020-10-28 11:08:51,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 11:08:51,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 11:08:51,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 11:08:51,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 11:08:51,494 INFO L87 Difference]: Start difference. First operand 2374 states and 3972 transitions. Second operand 7 states. [2020-10-28 11:08:51,788 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:08:53,047 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 11:09:13,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 11:09:13,368 INFO L93 Difference]: Finished difference Result 6954 states and 11751 transitions. [2020-10-28 11:09:13,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 11:09:13,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1008 [2020-10-28 11:09:13,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 11:09:13,400 INFO L225 Difference]: With dead ends: 6954 [2020-10-28 11:09:13,401 INFO L226 Difference]: Without dead ends: 4586 [2020-10-28 11:09:13,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 11:09:13,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2020-10-28 11:09:13,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 4542. [2020-10-28 11:09:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4542 states. [2020-10-28 11:09:13,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4542 states to 4542 states and 7000 transitions. [2020-10-28 11:09:13,567 INFO L78 Accepts]: Start accepts. Automaton has 4542 states and 7000 transitions. Word has length 1008 [2020-10-28 11:09:13,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 11:09:13,568 INFO L481 AbstractCegarLoop]: Abstraction has 4542 states and 7000 transitions. [2020-10-28 11:09:13,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 11:09:13,568 INFO L276 IsEmpty]: Start isEmpty. Operand 4542 states and 7000 transitions. [2020-10-28 11:09:13,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2020-10-28 11:09:13,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:09:13,598 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:09:13,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 11:09:13,598 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:09:13,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:09:13,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1831147081, now seen corresponding path program 1 times [2020-10-28 11:09:13,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:09:13,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259653219] [2020-10-28 11:09:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:09:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:09:13,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:09:15,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:09:18,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:09:18,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1032 [2020-10-28 11:09:18,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 11:09:18,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-28 11:09:18,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:09:18,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:09:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 11:09:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 11:09:18,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 11:09:18,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 11:09:19,221 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:09:19,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:09:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:09:19,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:09:19,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:09:19,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:09:19,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:09:19,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 11:09:19,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:09:19,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:09:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:09:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:09:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 11:09:19,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:09:19,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 11:09:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:09:19,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:09:19,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:09:19,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 11:09:19,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:09:19,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 11:09:19,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:09:19,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:09:19,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:09:19,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 11:09:19,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 11:09:19,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:09:20,094 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 11:09:20,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259653219] [2020-10-28 11:09:20,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 11:09:20,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 11:09:20,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277234770] [2020-10-28 11:09:20,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 11:09:20,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 11:09:20,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 11:09:20,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 11:09:20,099 INFO L87 Difference]: Start difference. First operand 4542 states and 7000 transitions. Second operand 7 states. [2020-10-28 11:09:20,378 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:09:20,928 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:09:44,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 11:09:44,149 INFO L93 Difference]: Finished difference Result 13789 states and 22191 transitions. [2020-10-28 11:09:44,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 11:09:44,152 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1012 [2020-10-28 11:09:44,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 11:09:44,217 INFO L225 Difference]: With dead ends: 13789 [2020-10-28 11:09:44,217 INFO L226 Difference]: Without dead ends: 9253 [2020-10-28 11:09:44,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 11:09:44,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9253 states. [2020-10-28 11:09:44,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9253 to 9000. [2020-10-28 11:09:44,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-10-28 11:09:44,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 12936 transitions. [2020-10-28 11:09:44,544 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 12936 transitions. Word has length 1012 [2020-10-28 11:09:44,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 11:09:44,545 INFO L481 AbstractCegarLoop]: Abstraction has 9000 states and 12936 transitions. [2020-10-28 11:09:44,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 11:09:44,545 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 12936 transitions. [2020-10-28 11:09:44,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2020-10-28 11:09:44,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:09:44,581 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:09:44,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 11:09:44,581 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:09:44,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:09:44,582 INFO L82 PathProgramCache]: Analyzing trace with hash 887529362, now seen corresponding path program 1 times [2020-10-28 11:09:44,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:09:44,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399530429] [2020-10-28 11:09:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:09:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:09:44,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:09:44,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:09:49,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:09:49,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1038 [2020-10-28 11:09:49,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 11:09:49,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 11:09:49,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:09:49,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:09:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:09:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 11:09:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 11:09:49,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:09:50,210 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:09:50,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:09:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:09:50,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:09:50,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:09:50,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:09:50,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:09:50,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 11:09:50,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:09:50,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:09:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:09:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:09:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:09:50,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:09:50,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 11:09:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:09:50,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:09:50,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:09:50,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 11:09:50,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:09:50,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 11:09:50,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:09:50,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:09:50,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:09:50,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:09:50,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 11:09:50,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:09:50,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 11:09:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:09:50,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:09:50,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:09:50,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 11:09:50,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:09:50,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 11:09:50,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:09:50,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:09:50,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:09:50,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 11:09:50,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 11:09:50,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 11:09:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 11:09:51,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399530429] [2020-10-28 11:09:51,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 11:09:51,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 11:09:51,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40810075] [2020-10-28 11:09:51,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 11:09:51,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 11:09:51,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 11:09:51,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 11:09:51,252 INFO L87 Difference]: Start difference. First operand 9000 states and 12936 transitions. Second operand 7 states. [2020-10-28 11:09:51,600 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:09:52,249 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:10:25,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 11:10:25,114 INFO L93 Difference]: Finished difference Result 35873 states and 56348 transitions. [2020-10-28 11:10:25,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 11:10:25,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1016 [2020-10-28 11:10:25,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 11:10:25,267 INFO L225 Difference]: With dead ends: 35873 [2020-10-28 11:10:25,267 INFO L226 Difference]: Without dead ends: 26879 [2020-10-28 11:10:25,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 11:10:25,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26879 states. [2020-10-28 11:10:26,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26879 to 26761. [2020-10-28 11:10:26,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26761 states. [2020-10-28 11:10:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26761 states to 26761 states and 37916 transitions. [2020-10-28 11:10:26,191 INFO L78 Accepts]: Start accepts. Automaton has 26761 states and 37916 transitions. Word has length 1016 [2020-10-28 11:10:26,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 11:10:26,192 INFO L481 AbstractCegarLoop]: Abstraction has 26761 states and 37916 transitions. [2020-10-28 11:10:26,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 11:10:26,192 INFO L276 IsEmpty]: Start isEmpty. Operand 26761 states and 37916 transitions. [2020-10-28 11:10:26,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2020-10-28 11:10:26,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:10:26,500 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:10:26,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 11:10:26,501 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:10:26,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:10:26,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1444219466, now seen corresponding path program 1 times [2020-10-28 11:10:26,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:10:26,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158727756] [2020-10-28 11:10:26,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:10:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:10:26,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:10:26,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:10:31,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:10:31,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1042 [2020-10-28 11:10:31,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 11:10:31,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 11:10:31,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:10:31,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:10:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:10:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 11:10:31,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 11:10:31,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 11:10:32,258 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:10:32,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:10:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:10:32,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:10:32,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:10:32,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:10:32,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:10:32,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 11:10:32,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:10:32,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:10:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:10:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:10:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:10:32,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 11:10:32,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 11:10:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:10:32,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:10:32,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:10:32,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 11:10:32,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:10:32,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 11:10:32,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:10:32,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:10:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:10:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:10:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 11:10:32,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 11:10:32,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 11:10:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:10:32,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:10:32,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:10:32,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 11:10:32,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:10:32,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 11:10:32,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:10:32,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:10:32,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:10:32,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 11:10:32,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 11:10:32,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:10:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 11:10:33,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158727756] [2020-10-28 11:10:33,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 11:10:33,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 11:10:33,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622313481] [2020-10-28 11:10:33,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 11:10:33,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 11:10:33,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 11:10:33,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 11:10:33,360 INFO L87 Difference]: Start difference. First operand 26761 states and 37916 transitions. Second operand 7 states. [2020-10-28 11:10:33,688 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:10:34,163 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:10:55,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 11:10:55,899 INFO L93 Difference]: Finished difference Result 66955 states and 102553 transitions. [2020-10-28 11:10:55,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 11:10:55,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1020 [2020-10-28 11:10:55,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 11:10:56,100 INFO L225 Difference]: With dead ends: 66955 [2020-10-28 11:10:56,100 INFO L226 Difference]: Without dead ends: 40200 [2020-10-28 11:10:56,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 11:10:56,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40200 states. [2020-10-28 11:10:57,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40200 to 39988. [2020-10-28 11:10:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39988 states. [2020-10-28 11:10:57,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39988 states to 39988 states and 59157 transitions. [2020-10-28 11:10:57,754 INFO L78 Accepts]: Start accepts. Automaton has 39988 states and 59157 transitions. Word has length 1020 [2020-10-28 11:10:57,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 11:10:57,755 INFO L481 AbstractCegarLoop]: Abstraction has 39988 states and 59157 transitions. [2020-10-28 11:10:57,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 11:10:57,755 INFO L276 IsEmpty]: Start isEmpty. Operand 39988 states and 59157 transitions. [2020-10-28 11:10:57,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1045 [2020-10-28 11:10:57,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:10:57,917 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:10:57,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 11:10:57,917 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:10:57,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:10:57,918 INFO L82 PathProgramCache]: Analyzing trace with hash -214632498, now seen corresponding path program 1 times [2020-10-28 11:10:57,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:10:57,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930739736] [2020-10-28 11:10:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:10:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:10:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:10:58,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:10:58,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:10:58,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:11:03,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:11:03,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1070 [2020-10-28 11:11:03,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 11:11:03,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5300 [2020-10-28 11:11:03,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:11:03,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:11:03,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:11:03,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 11:11:03,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 11:11:03,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 11:11:03,918 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:11:03,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:11:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:11:03,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:11:03,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:11:03,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:11:03,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:11:03,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 11:11:03,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:11:03,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:11:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:11:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:11:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:11:03,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:11:04,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 11:11:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:11:04,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:11:04,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:11:04,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 11:11:04,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:11:04,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 11:11:04,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:11:04,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:11:04,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:11:04,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:11:04,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:11:04,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:11:04,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 11:11:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:11:04,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:11:04,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:11:04,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 11:11:04,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:11:04,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 11:11:04,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:11:04,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:11:04,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:11:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:11:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 11:11:04,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:11:04,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 11:11:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:11:04,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:11:04,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:11:04,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 11:11:04,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:11:04,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 11:11:04,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:11:04,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:11:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:11:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 11:11:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 11:11:04,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:11:04,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 11:11:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:11:04,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:11:04,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:11:04,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 11:11:04,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:11:04,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 11:11:04,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:11:04,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:11:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:11:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 11:11:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:11:04,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:11:04,773 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 64 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-28 11:11:04,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930739736] [2020-10-28 11:11:04,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 11:11:04,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 11:11:04,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194604071] [2020-10-28 11:11:04,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 11:11:04,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 11:11:04,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 11:11:04,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 11:11:04,777 INFO L87 Difference]: Start difference. First operand 39988 states and 59157 transitions. Second operand 7 states. [2020-10-28 11:11:05,033 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:11:07,112 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:11:25,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 11:11:25,734 INFO L93 Difference]: Finished difference Result 93639 states and 147973 transitions. [2020-10-28 11:11:25,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 11:11:25,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1044 [2020-10-28 11:11:25,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 11:11:26,013 INFO L225 Difference]: With dead ends: 93639 [2020-10-28 11:11:26,014 INFO L226 Difference]: Without dead ends: 53657 [2020-10-28 11:11:26,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 11:11:26,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53657 states. [2020-10-28 11:11:27,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53657 to 53484. [2020-10-28 11:11:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53484 states. [2020-10-28 11:11:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53484 states to 53484 states and 81054 transitions. [2020-10-28 11:11:28,244 INFO L78 Accepts]: Start accepts. Automaton has 53484 states and 81054 transitions. Word has length 1044 [2020-10-28 11:11:28,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 11:11:28,245 INFO L481 AbstractCegarLoop]: Abstraction has 53484 states and 81054 transitions. [2020-10-28 11:11:28,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 11:11:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 53484 states and 81054 transitions. [2020-10-28 11:11:28,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2020-10-28 11:11:28,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:11:28,722 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:11:28,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 11:11:28,723 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:11:28,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:11:28,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1992229937, now seen corresponding path program 1 times [2020-10-28 11:11:28,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:11:28,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501031882] [2020-10-28 11:11:28,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:11:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:11:28,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:11:29,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:11:31,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:11:33,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:11:34,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:11:34,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1099 [2020-10-28 11:11:34,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 11:11:34,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5414 [2020-10-28 11:11:34,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:11:34,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:11:34,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 11:11:34,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 11:11:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 11:11:34,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:11:34,730 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:11:34,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:11:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:11:34,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:11:34,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:11:34,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:11:34,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:11:34,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 11:11:34,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:11:34,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:11:34,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:11:34,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:11:34,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 11:11:34,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:11:34,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 11:11:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:11:34,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:11:34,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:11:34,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 11:11:34,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:11:34,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 11:11:34,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:11:34,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:11:34,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:11:34,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 11:11:34,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 11:11:34,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:11:34,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 11:11:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:11:34,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:11:35,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:11:35,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 11:11:35,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:11:35,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 11:11:35,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:11:35,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:11:35,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:11:35,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 11:11:35,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:11:35,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:11:35,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 11:11:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:11:35,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:11:35,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:11:35,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 11:11:35,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:11:35,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 11:11:35,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:11:35,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:11:35,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:11:35,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 11:11:35,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:11:35,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:11:35,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 11:11:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:11:35,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:11:35,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:11:35,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 11:11:35,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:11:35,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 11:11:35,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:11:35,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:11:35,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:11:35,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 11:11:35,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:11:35,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0