/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/Problem05_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:45:51,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:45:51,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:45:51,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:45:51,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:45:51,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:45:51,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:45:51,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:45:51,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:45:51,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:45:51,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:45:51,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:45:51,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:45:51,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:45:51,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:45:51,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:45:51,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:45:51,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:45:51,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:45:51,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:45:51,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:45:51,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:45:51,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:45:51,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:45:51,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:45:51,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:45:51,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:45:51,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:45:51,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:45:51,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:45:51,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:45:51,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:45:51,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:45:51,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:45:51,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:45:51,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:45:51,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:45:51,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:45:51,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:45:51,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:45:51,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:45:51,940 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 10:45:51,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:45:51,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:45:51,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:45:51,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:45:51,976 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:45:51,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:45:51,977 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:45:51,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:45:51,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:45:51,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:45:51,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:45:51,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:45:51,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:45:51,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:45:51,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:45:51,979 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:45:51,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:45:51,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:45:51,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:45:51,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:45:51,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:45:51,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:45:51,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:45:51,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:45:51,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:45:51,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:45:51,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:45:51,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:45:51,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:45:51,982 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:45:52,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:45:52,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:45:52,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:45:52,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:45:52,458 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:45:52,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label29.c [2020-10-28 10:45:52,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be3b6738a/ad302b0478d04972b4385eb4f35dfc7f/FLAGd72c16500 [2020-10-28 10:45:53,895 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:45:53,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label29.c [2020-10-28 10:45:53,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be3b6738a/ad302b0478d04972b4385eb4f35dfc7f/FLAGd72c16500 [2020-10-28 10:45:54,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be3b6738a/ad302b0478d04972b4385eb4f35dfc7f [2020-10-28 10:45:54,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:45:54,064 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:45:54,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:45:54,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:45:54,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:45:54,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:45:54" (1/1) ... [2020-10-28 10:45:54,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0d7468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:45:54, skipping insertion in model container [2020-10-28 10:45:54,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:45:54" (1/1) ... [2020-10-28 10:45:54,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:45:54,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:45:56,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:45:56,720 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:45:57,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:45:57,938 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:45:57,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:45:57 WrapperNode [2020-10-28 10:45:57,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:45:57,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:45:57,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:45:57,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:45:57,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:45:57" (1/1) ... [2020-10-28 10:45:57,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:45:57" (1/1) ... [2020-10-28 10:45:58,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:45:57" (1/1) ... [2020-10-28 10:45:58,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:45:57" (1/1) ... [2020-10-28 10:45:58,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:45:57" (1/1) ... [2020-10-28 10:45:58,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:45:57" (1/1) ... [2020-10-28 10:45:58,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:45:57" (1/1) ... [2020-10-28 10:45:58,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:45:58,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:45:58,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:45:58,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:45:58,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:45:57" (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 10:45:58,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:45:58,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:45:58,800 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:45:58,800 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:45:58,800 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:45:58,800 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:45:58,800 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:45:58,801 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 10:45:58,801 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 10:45:58,801 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-28 10:45:58,801 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-28 10:45:58,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:45:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:45:58,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:45:58,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:45:58,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:45:58,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 10:45:58,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 10:45:58,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-28 10:45:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-28 10:45:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:45:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:45:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:45:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:45:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:45:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:45:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:45:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:45:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:45:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:45:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:45:58,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:45:58,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:46:08,683 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:46:08,684 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:46:08,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:46:08 BoogieIcfgContainer [2020-10-28 10:46:08,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:46:08,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:46:08,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:46:08,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:46:08,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:45:54" (1/3) ... [2020-10-28 10:46:08,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@87fa3d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:46:08, skipping insertion in model container [2020-10-28 10:46:08,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:45:57" (2/3) ... [2020-10-28 10:46:08,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@87fa3d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:46:08, skipping insertion in model container [2020-10-28 10:46:08,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:46:08" (3/3) ... [2020-10-28 10:46:08,702 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label29.c [2020-10-28 10:46:08,715 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:46:08,725 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:46:08,739 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:46:08,778 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:46:08,778 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:46:08,779 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:46:08,779 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:46:08,779 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:46:08,779 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:46:08,779 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:46:08,779 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:46:08,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-28 10:46:08,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1713 [2020-10-28 10:46:08,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:46:08,993 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:08,993 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:46:09,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:46:09,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1760013881, now seen corresponding path program 1 times [2020-10-28 10:46:09,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:46:09,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593462109] [2020-10-28 10:46:09,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:46:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:46:10,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:46:15,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:46:15,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1736 [2020-10-28 10:46:15,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:46:15,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5149 [2020-10-28 10:46:15,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:46:15,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:46:15,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 10:46:15,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:46:15,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1727 [2020-10-28 10:46:15,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 10:46:17,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:46:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:46:17,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:46:17,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:46:17,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:46:17,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:46:17,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 10:46:17,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:46:17,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:46:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:46:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:46:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:46:17,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:46:19,930 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 10:46:19,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593462109] [2020-10-28 10:46:19,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:46:19,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:46:19,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220883360] [2020-10-28 10:46:19,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:46:19,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:46:19,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:46:19,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:46:19,962 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-28 10:46:41,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:46:41,397 INFO L93 Difference]: Finished difference Result 6365 states and 11967 transitions. [2020-10-28 10:46:41,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:46:41,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1712 [2020-10-28 10:46:41,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:46:41,464 INFO L225 Difference]: With dead ends: 6365 [2020-10-28 10:46:41,465 INFO L226 Difference]: Without dead ends: 4075 [2020-10-28 10:46:41,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:46:41,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2020-10-28 10:46:41,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4005. [2020-10-28 10:46:41,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4005 states. [2020-10-28 10:46:41,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 6505 transitions. [2020-10-28 10:46:41,714 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 6505 transitions. Word has length 1712 [2020-10-28 10:46:41,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:46:41,719 INFO L481 AbstractCegarLoop]: Abstraction has 4005 states and 6505 transitions. [2020-10-28 10:46:41,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:46:41,720 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 6505 transitions. [2020-10-28 10:46:42,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1724 [2020-10-28 10:46:42,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:46:42,023 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:42,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:46:42,024 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:46:42,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:46:42,025 INFO L82 PathProgramCache]: Analyzing trace with hash -84764993, now seen corresponding path program 1 times [2020-10-28 10:46:42,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:46:42,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657968710] [2020-10-28 10:46:42,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:46:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:46:42,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:46:43,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:46:47,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:46:47,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1749 [2020-10-28 10:46:47,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:46:47,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 10:46:47,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:46:47,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:46:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:46:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:46:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:46:47,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:46:48,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:46:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:46:48,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:46:48,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:46:48,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:46:48,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:46:48,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:46:48,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:46:48,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:46:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:46:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:46:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:46:48,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:46:48,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:46:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:46:48,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:46:48,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:46:48,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:46:48,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:46:48,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 10:46:48,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:46:48,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:46:48,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:46:48,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:46:48,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:46:48,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:46:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:46:50,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657968710] [2020-10-28 10:46:50,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:46:50,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:46:50,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540667674] [2020-10-28 10:46:50,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:46:50,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:46:50,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:46:50,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:46:50,185 INFO L87 Difference]: Start difference. First operand 4005 states and 6505 transitions. Second operand 8 states. [2020-10-28 10:47:29,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:47:29,662 INFO L93 Difference]: Finished difference Result 15483 states and 25575 transitions. [2020-10-28 10:47:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 10:47:29,663 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1723 [2020-10-28 10:47:29,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:47:29,727 INFO L225 Difference]: With dead ends: 15483 [2020-10-28 10:47:29,728 INFO L226 Difference]: Without dead ends: 11484 [2020-10-28 10:47:29,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-28 10:47:29,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11484 states. [2020-10-28 10:47:30,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11484 to 11297. [2020-10-28 10:47:30,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11297 states. [2020-10-28 10:47:30,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11297 states to 11297 states and 15203 transitions. [2020-10-28 10:47:30,126 INFO L78 Accepts]: Start accepts. Automaton has 11297 states and 15203 transitions. Word has length 1723 [2020-10-28 10:47:30,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:47:30,127 INFO L481 AbstractCegarLoop]: Abstraction has 11297 states and 15203 transitions. [2020-10-28 10:47:30,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:47:30,127 INFO L276 IsEmpty]: Start isEmpty. Operand 11297 states and 15203 transitions. [2020-10-28 10:47:30,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1735 [2020-10-28 10:47:30,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:47:30,184 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:47:30,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:47:30,185 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:47:30,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:47:30,186 INFO L82 PathProgramCache]: Analyzing trace with hash -56553912, now seen corresponding path program 1 times [2020-10-28 10:47:30,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:47:30,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295326199] [2020-10-28 10:47:30,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:47:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:47:30,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:31,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:32,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:35,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:35,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1760 [2020-10-28 10:47:35,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:47:35,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-28 10:47:35,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:35,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:47:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:47:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 10:47:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:47:36,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:47:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:47:36,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:36,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:36,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:47:36,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:47:36,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 10:47:36,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:36,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:47:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:47:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:47:36,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:47:36,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:47:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:47:36,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:47:36,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:47:36,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 10:47:36,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:47:36,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 10:47:36,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:47:36,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:47:36,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:47:36,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:47:36,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:47:36,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:47:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:47:37,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295326199] [2020-10-28 10:47:37,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:47:37,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:47:37,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097493150] [2020-10-28 10:47:37,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:47:37,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:47:37,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:47:37,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:47:37,855 INFO L87 Difference]: Start difference. First operand 11297 states and 15203 transitions. Second operand 7 states. [2020-10-28 10:48:02,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:48:02,805 INFO L93 Difference]: Finished difference Result 28605 states and 38316 transitions. [2020-10-28 10:48:02,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:48:02,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1734 [2020-10-28 10:48:02,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:48:02,895 INFO L225 Difference]: With dead ends: 28605 [2020-10-28 10:48:02,895 INFO L226 Difference]: Without dead ends: 17314 [2020-10-28 10:48:02,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:48:02,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17314 states. [2020-10-28 10:48:03,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17314 to 17153. [2020-10-28 10:48:03,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17153 states. [2020-10-28 10:48:03,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17153 states to 17153 states and 21876 transitions. [2020-10-28 10:48:03,416 INFO L78 Accepts]: Start accepts. Automaton has 17153 states and 21876 transitions. Word has length 1734 [2020-10-28 10:48:03,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:48:03,417 INFO L481 AbstractCegarLoop]: Abstraction has 17153 states and 21876 transitions. [2020-10-28 10:48:03,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:48:03,423 INFO L276 IsEmpty]: Start isEmpty. Operand 17153 states and 21876 transitions. [2020-10-28 10:48:03,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1767 [2020-10-28 10:48:03,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:48:03,498 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:03,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:48:03,499 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:48:03,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:48:03,500 INFO L82 PathProgramCache]: Analyzing trace with hash 603682874, now seen corresponding path program 1 times [2020-10-28 10:48:03,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:48:03,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035476604] [2020-10-28 10:48:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:48:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:48:03,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:48:05,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:48:08,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:48:08,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1792 [2020-10-28 10:48:08,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:48:08,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5212 [2020-10-28 10:48:08,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:48:08,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:48:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:48:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:48:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 10:48:08,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:48:09,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:48:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:48:09,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:48:09,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:48:09,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:48:09,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:48:09,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:48:09,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:48:09,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:48:09,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:48:09,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:48:09,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:48:09,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:48:09,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:48:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:48:09,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:48:09,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:48:09,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 10:48:09,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:48:09,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 10:48:09,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:48:09,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:48:09,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:48:09,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:48:09,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 10:48:09,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:48:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:48:11,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035476604] [2020-10-28 10:48:11,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:48:11,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:48:11,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492546119] [2020-10-28 10:48:11,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:48:11,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:48:11,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:48:11,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:48:11,133 INFO L87 Difference]: Start difference. First operand 17153 states and 21876 transitions. Second operand 8 states. [2020-10-28 10:48:54,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:48:54,945 INFO L93 Difference]: Finished difference Result 68062 states and 93446 transitions. [2020-10-28 10:48:54,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 10:48:54,947 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1766 [2020-10-28 10:48:54,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:48:55,166 INFO L225 Difference]: With dead ends: 68062 [2020-10-28 10:48:55,166 INFO L226 Difference]: Without dead ends: 50915 [2020-10-28 10:48:55,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 10:48:55,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50915 states. [2020-10-28 10:48:56,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50915 to 50818. [2020-10-28 10:48:56,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50818 states. [2020-10-28 10:48:56,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50818 states to 50818 states and 65506 transitions. [2020-10-28 10:48:56,818 INFO L78 Accepts]: Start accepts. Automaton has 50818 states and 65506 transitions. Word has length 1766 [2020-10-28 10:48:56,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:48:56,819 INFO L481 AbstractCegarLoop]: Abstraction has 50818 states and 65506 transitions. [2020-10-28 10:48:56,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:48:56,819 INFO L276 IsEmpty]: Start isEmpty. Operand 50818 states and 65506 transitions. [2020-10-28 10:48:57,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1848 [2020-10-28 10:48:57,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:48:57,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:57,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:48:57,006 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:48:57,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:48:57,007 INFO L82 PathProgramCache]: Analyzing trace with hash 86793614, now seen corresponding path program 1 times [2020-10-28 10:48:57,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:48:57,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072781204] [2020-10-28 10:48:57,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:48:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:48:57,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:48:58,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:48:59,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:49:02,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:49:02,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1875 [2020-10-28 10:49:02,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:49:02,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5167 [2020-10-28 10:49:02,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:49:02,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:49:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:49:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-28 10:49:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 10:49:02,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:49:03,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:49:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:49:03,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:49:03,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:49:03,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:49:03,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:49:03,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:49:03,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:49:03,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:49:03,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:49:03,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:49:03,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:49:03,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:49:03,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:49:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:49:03,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:49:03,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:49:03,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:49:03,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:49:03,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 10:49:03,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:49:03,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:49:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:49:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:49:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 10:49:03,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:49:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 10:49:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:49:03,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:49:03,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:49:03,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 10:49:03,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:49:03,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 10:49:03,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:49:03,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:49:03,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:49:03,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:49:03,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:49:03,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:49:05,044 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:49:05,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072781204] [2020-10-28 10:49:05,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:49:05,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:49:05,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272478359] [2020-10-28 10:49:05,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:49:05,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:49:05,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:49:05,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:49:05,048 INFO L87 Difference]: Start difference. First operand 50818 states and 65506 transitions. Second operand 7 states.