./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c1928fd99ddae1c837272e074c24407d4011054550d928a14afc6eb7550c755f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:09:26,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:09:26,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:09:26,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:09:26,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:09:26,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:09:26,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:09:26,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:09:26,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:09:26,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:09:26,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:09:26,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:09:26,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:09:26,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:09:26,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:09:26,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:09:26,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:09:26,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:09:26,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:09:26,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:09:26,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:09:26,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:09:26,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:09:26,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:09:26,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:09:26,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:09:26,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:09:26,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:09:26,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:09:26,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:09:26,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:09:26,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:09:26,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:09:26,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:09:26,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:09:26,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:09:26,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:09:26,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:09:26,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:09:26,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:09:26,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:09:26,862 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:09:26,907 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:09:26,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:09:26,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:09:26,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:09:26,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:09:26,918 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:09:26,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:09:26,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:09:26,920 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:09:26,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:09:26,921 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:09:26,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:09:26,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:09:26,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:09:26,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:09:26,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:09:26,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:09:26,923 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:09:26,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:09:26,924 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:09:26,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:09:26,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:09:26,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:09:26,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:09:26,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:09:26,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:09:26,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:09:26,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:09:26,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:09:26,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:09:26,927 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:09:26,927 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:09:26,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:09:26,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:09:26,928 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1928fd99ddae1c837272e074c24407d4011054550d928a14afc6eb7550c755f [2021-11-20 06:09:27,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:09:27,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:09:27,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:09:27,355 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:09:27,356 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:09:27,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-11-20 06:09:27,431 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/bin/uautomizer-DQz5hQGWxF/data/73dad690c/9eaae619484742979071cecd05304df8/FLAG2f8678f6c [2021-11-20 06:09:28,110 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:09:28,111 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-11-20 06:09:28,153 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/bin/uautomizer-DQz5hQGWxF/data/73dad690c/9eaae619484742979071cecd05304df8/FLAG2f8678f6c [2021-11-20 06:09:28,302 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/bin/uautomizer-DQz5hQGWxF/data/73dad690c/9eaae619484742979071cecd05304df8 [2021-11-20 06:09:28,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:09:28,308 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:09:28,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:09:28,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:09:28,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:09:28,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:09:28" (1/1) ... [2021-11-20 06:09:28,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31e88652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:09:28, skipping insertion in model container [2021-11-20 06:09:28,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:09:28" (1/1) ... [2021-11-20 06:09:28,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:09:28,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:09:29,055 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[24251,24264] [2021-11-20 06:09:29,150 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[28044,28057] [2021-11-20 06:09:29,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:09:29,458 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:09:29,702 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[24251,24264] [2021-11-20 06:09:29,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[28044,28057] [2021-11-20 06:09:29,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:09:29,906 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:09:29,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:09:29 WrapperNode [2021-11-20 06:09:29,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:09:29,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:09:29,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:09:29,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:09:29,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:09:29" (1/1) ... [2021-11-20 06:09:29,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:09:29" (1/1) ... [2021-11-20 06:09:30,121 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2364 [2021-11-20 06:09:30,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:09:30,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:09:30,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:09:30,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:09:30,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:09:29" (1/1) ... [2021-11-20 06:09:30,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:09:29" (1/1) ... [2021-11-20 06:09:30,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:09:29" (1/1) ... [2021-11-20 06:09:30,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:09:29" (1/1) ... [2021-11-20 06:09:30,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:09:29" (1/1) ... [2021-11-20 06:09:30,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:09:29" (1/1) ... [2021-11-20 06:09:30,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:09:29" (1/1) ... [2021-11-20 06:09:30,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:09:30,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:09:30,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:09:30,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:09:30,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:09:29" (1/1) ... [2021-11-20 06:09:30,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:09:30,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:09:30,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:09:30,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2574f5-705f-4250-8188-82815e58a5c1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:09:30,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:09:30,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:09:30,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:09:30,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:09:30,632 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:09:30,634 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:09:32,506 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:09:32,541 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:09:32,542 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:09:32,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:09:32 BoogieIcfgContainer [2021-11-20 06:09:32,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:09:32,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:09:32,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:09:32,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:09:32,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:09:28" (1/3) ... [2021-11-20 06:09:32,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2790e6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:09:32, skipping insertion in model container [2021-11-20 06:09:32,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:09:29" (2/3) ... [2021-11-20 06:09:32,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2790e6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:09:32, skipping insertion in model container [2021-11-20 06:09:32,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:09:32" (3/3) ... [2021-11-20 06:09:32,563 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-11-20 06:09:32,575 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:09:32,575 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 06:09:32,692 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:09:32,706 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:09:32,706 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 06:09:32,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 613 states, 610 states have (on average 1.8049180327868852) internal successors, (1101), 612 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:32,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-20 06:09:32,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:09:32,815 INFO L514 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] [2021-11-20 06:09:32,816 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:09:32,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:09:32,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1418663715, now seen corresponding path program 1 times [2021-11-20 06:09:32,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:09:32,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414683153] [2021-11-20 06:09:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:32,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:09:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:33,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:09:33,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414683153] [2021-11-20 06:09:33,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414683153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:09:33,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:09:33,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:09:33,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816678131] [2021-11-20 06:09:33,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:09:33,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:09:33,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:09:33,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:09:33,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:09:33,932 INFO L87 Difference]: Start difference. First operand has 613 states, 610 states have (on average 1.8049180327868852) internal successors, (1101), 612 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:34,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:09:34,335 INFO L93 Difference]: Finished difference Result 1803 states and 3242 transitions. [2021-11-20 06:09:34,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:09:34,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2021-11-20 06:09:34,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:09:34,375 INFO L225 Difference]: With dead ends: 1803 [2021-11-20 06:09:34,376 INFO L226 Difference]: Without dead ends: 1195 [2021-11-20 06:09:34,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:09:34,393 INFO L933 BasicCegarLoop]: 1770 mSDtfsCounter, 2411 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:09:34,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2411 Valid, 2809 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:09:34,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2021-11-20 06:09:34,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1162. [2021-11-20 06:09:34,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1160 states have (on average 1.5620689655172413) internal successors, (1812), 1161 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:34,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1812 transitions. [2021-11-20 06:09:34,573 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1812 transitions. Word has length 231 [2021-11-20 06:09:34,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:09:34,576 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 1812 transitions. [2021-11-20 06:09:34,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:34,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1812 transitions. [2021-11-20 06:09:34,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-20 06:09:34,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:09:34,593 INFO L514 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] [2021-11-20 06:09:34,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:09:34,594 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:09:34,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:09:34,598 INFO L85 PathProgramCache]: Analyzing trace with hash -150188263, now seen corresponding path program 1 times [2021-11-20 06:09:34,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:09:34,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870175474] [2021-11-20 06:09:34,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:34,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:09:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:34,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:34,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:09:34,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870175474] [2021-11-20 06:09:34,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870175474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:09:34,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:09:34,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:09:34,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90806064] [2021-11-20 06:09:34,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:09:34,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:09:34,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:09:34,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:09:34,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:09:34,912 INFO L87 Difference]: Start difference. First operand 1162 states and 1812 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:35,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:09:35,117 INFO L93 Difference]: Finished difference Result 3320 states and 5146 transitions. [2021-11-20 06:09:35,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:09:35,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2021-11-20 06:09:35,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:09:35,137 INFO L225 Difference]: With dead ends: 3320 [2021-11-20 06:09:35,137 INFO L226 Difference]: Without dead ends: 2283 [2021-11-20 06:09:35,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:09:35,146 INFO L933 BasicCegarLoop]: 1794 mSDtfsCounter, 820 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:09:35,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [820 Valid, 2701 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:09:35,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2021-11-20 06:09:35,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2252. [2021-11-20 06:09:35,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2250 states have (on average 1.5537777777777777) internal successors, (3496), 2251 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3496 transitions. [2021-11-20 06:09:35,302 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3496 transitions. Word has length 233 [2021-11-20 06:09:35,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:09:35,306 INFO L470 AbstractCegarLoop]: Abstraction has 2252 states and 3496 transitions. [2021-11-20 06:09:35,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:35,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3496 transitions. [2021-11-20 06:09:35,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-20 06:09:35,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:09:35,319 INFO L514 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] [2021-11-20 06:09:35,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:09:35,319 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:09:35,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:09:35,321 INFO L85 PathProgramCache]: Analyzing trace with hash 58619892, now seen corresponding path program 1 times [2021-11-20 06:09:35,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:09:35,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579948592] [2021-11-20 06:09:35,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:35,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:09:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:35,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:35,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:09:35,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579948592] [2021-11-20 06:09:35,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579948592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:09:35,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:09:35,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:09:35,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665882250] [2021-11-20 06:09:35,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:09:35,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:09:35,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:09:35,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:09:35,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:09:35,442 INFO L87 Difference]: Start difference. First operand 2252 states and 3496 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:35,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:09:35,691 INFO L93 Difference]: Finished difference Result 6689 states and 10372 transitions. [2021-11-20 06:09:35,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:09:35,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2021-11-20 06:09:35,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:09:35,720 INFO L225 Difference]: With dead ends: 6689 [2021-11-20 06:09:35,721 INFO L226 Difference]: Without dead ends: 4475 [2021-11-20 06:09:35,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:09:35,733 INFO L933 BasicCegarLoop]: 1888 mSDtfsCounter, 941 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:09:35,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [941 Valid, 2830 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:09:35,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2021-11-20 06:09:35,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 2271. [2021-11-20 06:09:35,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 2269 states have (on average 1.5531070956368445) internal successors, (3524), 2270 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:35,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 3524 transitions. [2021-11-20 06:09:35,891 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 3524 transitions. Word has length 233 [2021-11-20 06:09:35,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:09:35,892 INFO L470 AbstractCegarLoop]: Abstraction has 2271 states and 3524 transitions. [2021-11-20 06:09:35,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:35,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 3524 transitions. [2021-11-20 06:09:35,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-20 06:09:35,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:09:35,899 INFO L514 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] [2021-11-20 06:09:35,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:09:35,900 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:09:35,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:09:35,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1203815859, now seen corresponding path program 1 times [2021-11-20 06:09:35,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:09:35,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414897530] [2021-11-20 06:09:35,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:35,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:09:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:35,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:09:35,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414897530] [2021-11-20 06:09:35,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414897530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:09:35,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:09:35,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:09:35,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629790490] [2021-11-20 06:09:35,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:09:35,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:09:35,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:09:35,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:09:35,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:09:35,993 INFO L87 Difference]: Start difference. First operand 2271 states and 3524 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:36,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:09:36,263 INFO L93 Difference]: Finished difference Result 6708 states and 10393 transitions. [2021-11-20 06:09:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:09:36,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2021-11-20 06:09:36,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:09:36,289 INFO L225 Difference]: With dead ends: 6708 [2021-11-20 06:09:36,290 INFO L226 Difference]: Without dead ends: 4493 [2021-11-20 06:09:36,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:09:36,295 INFO L933 BasicCegarLoop]: 1888 mSDtfsCounter, 936 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:09:36,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [936 Valid, 2830 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:09:36,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4493 states. [2021-11-20 06:09:36,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4493 to 2289. [2021-11-20 06:09:36,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2287 states have (on average 1.55006558810669) internal successors, (3545), 2288 states have internal predecessors, (3545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:36,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3545 transitions. [2021-11-20 06:09:36,510 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3545 transitions. Word has length 234 [2021-11-20 06:09:36,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:09:36,510 INFO L470 AbstractCegarLoop]: Abstraction has 2289 states and 3545 transitions. [2021-11-20 06:09:36,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:36,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3545 transitions. [2021-11-20 06:09:36,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-20 06:09:36,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:09:36,518 INFO L514 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] [2021-11-20 06:09:36,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:09:36,518 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:09:36,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:09:36,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1261514849, now seen corresponding path program 1 times [2021-11-20 06:09:36,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:09:36,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176253145] [2021-11-20 06:09:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:36,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:09:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:36,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:09:36,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176253145] [2021-11-20 06:09:36,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176253145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:09:36,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:09:36,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:09:36,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114410862] [2021-11-20 06:09:36,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:09:36,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:09:36,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:09:36,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:09:36,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:09:36,888 INFO L87 Difference]: Start difference. First operand 2289 states and 3545 transitions. Second operand has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:37,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:09:37,355 INFO L93 Difference]: Finished difference Result 6563 states and 10134 transitions. [2021-11-20 06:09:37,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:09:37,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2021-11-20 06:09:37,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:09:37,381 INFO L225 Difference]: With dead ends: 6563 [2021-11-20 06:09:37,382 INFO L226 Difference]: Without dead ends: 4317 [2021-11-20 06:09:37,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:09:37,389 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 2994 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2994 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:09:37,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2994 Valid, 2428 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:09:37,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4317 states. [2021-11-20 06:09:37,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4317 to 4292. [2021-11-20 06:09:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4292 states, 4290 states have (on average 1.533100233100233) internal successors, (6577), 4291 states have internal predecessors, (6577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:37,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 6577 transitions. [2021-11-20 06:09:37,746 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 6577 transitions. Word has length 235 [2021-11-20 06:09:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:09:37,747 INFO L470 AbstractCegarLoop]: Abstraction has 4292 states and 6577 transitions. [2021-11-20 06:09:37,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:37,747 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 6577 transitions. [2021-11-20 06:09:37,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-20 06:09:37,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:09:37,758 INFO L514 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] [2021-11-20 06:09:37,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:09:37,759 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:09:37,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:09:37,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1134804277, now seen corresponding path program 1 times [2021-11-20 06:09:37,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:09:37,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422626259] [2021-11-20 06:09:37,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:37,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:09:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:38,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:09:38,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422626259] [2021-11-20 06:09:38,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422626259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:09:38,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:09:38,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:09:38,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164987114] [2021-11-20 06:09:38,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:09:38,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:09:38,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:09:38,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:09:38,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:09:38,077 INFO L87 Difference]: Start difference. First operand 4292 states and 6577 transitions. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:38,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:09:38,856 INFO L93 Difference]: Finished difference Result 12508 states and 19139 transitions. [2021-11-20 06:09:38,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:09:38,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2021-11-20 06:09:38,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:09:38,915 INFO L225 Difference]: With dead ends: 12508 [2021-11-20 06:09:38,915 INFO L226 Difference]: Without dead ends: 8342 [2021-11-20 06:09:38,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:09:38,924 INFO L933 BasicCegarLoop]: 1517 mSDtfsCounter, 2026 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2026 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:09:38,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2026 Valid, 2418 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:09:38,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8342 states. [2021-11-20 06:09:39,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8342 to 8280. [2021-11-20 06:09:39,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8280 states, 8278 states have (on average 1.5205363614399614) internal successors, (12587), 8279 states have internal predecessors, (12587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:39,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8280 states to 8280 states and 12587 transitions. [2021-11-20 06:09:39,667 INFO L78 Accepts]: Start accepts. Automaton has 8280 states and 12587 transitions. Word has length 237 [2021-11-20 06:09:39,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:09:39,668 INFO L470 AbstractCegarLoop]: Abstraction has 8280 states and 12587 transitions. [2021-11-20 06:09:39,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:39,669 INFO L276 IsEmpty]: Start isEmpty. Operand 8280 states and 12587 transitions. [2021-11-20 06:09:39,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-20 06:09:39,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:09:39,690 INFO L514 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] [2021-11-20 06:09:39,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:09:39,690 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:09:39,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:09:39,691 INFO L85 PathProgramCache]: Analyzing trace with hash -293921040, now seen corresponding path program 1 times [2021-11-20 06:09:39,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:09:39,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614781986] [2021-11-20 06:09:39,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:39,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:09:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:39,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:09:39,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614781986] [2021-11-20 06:09:39,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614781986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:09:39,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:09:39,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:09:39,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423408574] [2021-11-20 06:09:39,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:09:39,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:09:39,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:09:39,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:09:39,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:09:39,804 INFO L87 Difference]: Start difference. First operand 8280 states and 12587 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:40,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:09:40,950 INFO L93 Difference]: Finished difference Result 23966 states and 36309 transitions. [2021-11-20 06:09:40,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:09:40,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2021-11-20 06:09:40,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:09:41,016 INFO L225 Difference]: With dead ends: 23966 [2021-11-20 06:09:41,017 INFO L226 Difference]: Without dead ends: 16200 [2021-11-20 06:09:41,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:09:41,034 INFO L933 BasicCegarLoop]: 1796 mSDtfsCounter, 796 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:09:41,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 2707 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:09:41,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16200 states. [2021-11-20 06:09:42,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16200 to 16138. [2021-11-20 06:09:42,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16138 states, 16136 states have (on average 1.5105974219137333) internal successors, (24375), 16137 states have internal predecessors, (24375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16138 states to 16138 states and 24375 transitions. [2021-11-20 06:09:42,339 INFO L78 Accepts]: Start accepts. Automaton has 16138 states and 24375 transitions. Word has length 239 [2021-11-20 06:09:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:09:42,339 INFO L470 AbstractCegarLoop]: Abstraction has 16138 states and 24375 transitions. [2021-11-20 06:09:42,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:42,340 INFO L276 IsEmpty]: Start isEmpty. Operand 16138 states and 24375 transitions. [2021-11-20 06:09:42,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-20 06:09:42,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:09:42,376 INFO L514 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] [2021-11-20 06:09:42,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:09:42,376 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:09:42,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:09:42,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1568159733, now seen corresponding path program 1 times [2021-11-20 06:09:42,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:09:42,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467280965] [2021-11-20 06:09:42,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:42,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:09:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:42,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:42,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:09:42,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467280965] [2021-11-20 06:09:42,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467280965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:09:42,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:09:42,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:09:42,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602948809] [2021-11-20 06:09:42,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:09:42,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:09:42,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:09:42,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:09:42,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:09:42,443 INFO L87 Difference]: Start difference. First operand 16138 states and 24375 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:44,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:09:44,258 INFO L93 Difference]: Finished difference Result 47924 states and 72327 transitions. [2021-11-20 06:09:44,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:09:44,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2021-11-20 06:09:44,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:09:44,340 INFO L225 Difference]: With dead ends: 47924 [2021-11-20 06:09:44,340 INFO L226 Difference]: Without dead ends: 32058 [2021-11-20 06:09:44,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:09:44,366 INFO L933 BasicCegarLoop]: 1855 mSDtfsCounter, 908 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:09:44,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 2797 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:09:44,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32058 states. [2021-11-20 06:09:45,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32058 to 16252. [2021-11-20 06:09:45,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16252 states, 16250 states have (on average 1.5103384615384616) internal successors, (24543), 16251 states have internal predecessors, (24543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:45,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16252 states to 16252 states and 24543 transitions. [2021-11-20 06:09:45,808 INFO L78 Accepts]: Start accepts. Automaton has 16252 states and 24543 transitions. Word has length 239 [2021-11-20 06:09:45,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:09:45,808 INFO L470 AbstractCegarLoop]: Abstraction has 16252 states and 24543 transitions. [2021-11-20 06:09:45,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:45,809 INFO L276 IsEmpty]: Start isEmpty. Operand 16252 states and 24543 transitions. [2021-11-20 06:09:45,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-20 06:09:45,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:09:45,845 INFO L514 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] [2021-11-20 06:09:45,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:09:45,846 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:09:45,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:09:45,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1401321244, now seen corresponding path program 1 times [2021-11-20 06:09:45,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:09:45,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319086545] [2021-11-20 06:09:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:45,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:09:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:45,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:45,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:09:45,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319086545] [2021-11-20 06:09:45,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319086545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:09:45,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:09:45,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:09:45,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798466659] [2021-11-20 06:09:45,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:09:45,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:09:45,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:09:45,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:09:45,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:09:45,922 INFO L87 Difference]: Start difference. First operand 16252 states and 24543 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:47,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:09:47,665 INFO L93 Difference]: Finished difference Result 47986 states and 72365 transitions. [2021-11-20 06:09:47,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:09:47,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2021-11-20 06:09:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:09:47,756 INFO L225 Difference]: With dead ends: 47986 [2021-11-20 06:09:47,756 INFO L226 Difference]: Without dead ends: 32154 [2021-11-20 06:09:47,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:09:47,779 INFO L933 BasicCegarLoop]: 1855 mSDtfsCounter, 903 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:09:47,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [903 Valid, 2797 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:09:47,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32154 states. [2021-11-20 06:09:49,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32154 to 16348. [2021-11-20 06:09:49,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16348 states, 16346 states have (on average 1.5081977242138749) internal successors, (24653), 16347 states have internal predecessors, (24653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:49,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16348 states to 16348 states and 24653 transitions. [2021-11-20 06:09:49,241 INFO L78 Accepts]: Start accepts. Automaton has 16348 states and 24653 transitions. Word has length 240 [2021-11-20 06:09:49,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:09:49,242 INFO L470 AbstractCegarLoop]: Abstraction has 16348 states and 24653 transitions. [2021-11-20 06:09:49,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:49,242 INFO L276 IsEmpty]: Start isEmpty. Operand 16348 states and 24653 transitions. [2021-11-20 06:09:49,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-20 06:09:49,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:09:49,275 INFO L514 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] [2021-11-20 06:09:49,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:09:49,276 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:09:49,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:09:49,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1792031627, now seen corresponding path program 1 times [2021-11-20 06:09:49,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:09:49,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190120660] [2021-11-20 06:09:49,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:49,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:09:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:49,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:09:49,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190120660] [2021-11-20 06:09:49,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190120660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:09:49,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:09:49,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:09:49,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486796856] [2021-11-20 06:09:49,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:09:49,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:09:49,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:09:49,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:09:49,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:09:49,373 INFO L87 Difference]: Start difference. First operand 16348 states and 24653 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:51,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:09:51,346 INFO L93 Difference]: Finished difference Result 47218 states and 71041 transitions. [2021-11-20 06:09:51,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:09:51,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2021-11-20 06:09:51,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:09:51,424 INFO L225 Difference]: With dead ends: 47218 [2021-11-20 06:09:51,424 INFO L226 Difference]: Without dead ends: 31772 [2021-11-20 06:09:51,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:09:51,448 INFO L933 BasicCegarLoop]: 1827 mSDtfsCounter, 789 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:09:51,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 2738 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:09:51,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31772 states. [2021-11-20 06:09:53,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31772 to 31710. [2021-11-20 06:09:53,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31710 states, 31708 states have (on average 1.4976977418947899) internal successors, (47489), 31709 states have internal predecessors, (47489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:53,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31710 states to 31710 states and 47489 transitions. [2021-11-20 06:09:53,472 INFO L78 Accepts]: Start accepts. Automaton has 31710 states and 47489 transitions. Word has length 241 [2021-11-20 06:09:53,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:09:53,472 INFO L470 AbstractCegarLoop]: Abstraction has 31710 states and 47489 transitions. [2021-11-20 06:09:53,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:53,473 INFO L276 IsEmpty]: Start isEmpty. Operand 31710 states and 47489 transitions. [2021-11-20 06:09:53,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-20 06:09:53,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:09:53,551 INFO L514 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] [2021-11-20 06:09:53,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:09:53,551 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:09:53,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:09:53,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1670163144, now seen corresponding path program 1 times [2021-11-20 06:09:53,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:09:53,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103355882] [2021-11-20 06:09:53,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:53,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:09:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:53,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:09:53,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103355882] [2021-11-20 06:09:53,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103355882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:09:53,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:09:53,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:09:53,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474565172] [2021-11-20 06:09:53,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:09:53,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:09:53,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:09:53,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:09:53,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:09:53,800 INFO L87 Difference]: Start difference. First operand 31710 states and 47489 transitions. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:57,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:09:57,671 INFO L93 Difference]: Finished difference Result 92486 states and 138217 transitions. [2021-11-20 06:09:57,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:09:57,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2021-11-20 06:09:57,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:09:57,783 INFO L225 Difference]: With dead ends: 92486 [2021-11-20 06:09:57,783 INFO L226 Difference]: Without dead ends: 61157 [2021-11-20 06:09:57,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:09:57,821 INFO L933 BasicCegarLoop]: 1427 mSDtfsCounter, 2214 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2214 SdHoareTripleChecker+Valid, 3221 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:09:57,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2214 Valid, 3221 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:09:57,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61157 states. [2021-11-20 06:10:01,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61157 to 61134. [2021-11-20 06:10:01,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61134 states, 61132 states have (on average 1.4832493620362495) internal successors, (90674), 61133 states have internal predecessors, (90674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:10:01,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61134 states to 61134 states and 90674 transitions. [2021-11-20 06:10:01,398 INFO L78 Accepts]: Start accepts. Automaton has 61134 states and 90674 transitions. Word has length 241 [2021-11-20 06:10:01,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:10:01,398 INFO L470 AbstractCegarLoop]: Abstraction has 61134 states and 90674 transitions. [2021-11-20 06:10:01,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:10:01,399 INFO L276 IsEmpty]: Start isEmpty. Operand 61134 states and 90674 transitions. [2021-11-20 06:10:01,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-20 06:10:01,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:10:01,461 INFO L514 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] [2021-11-20 06:10:01,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 06:10:01,461 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:10:01,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:10:01,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1100534090, now seen corresponding path program 1 times [2021-11-20 06:10:01,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:10:01,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265682170] [2021-11-20 06:10:01,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:10:01,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:10:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:10:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:10:01,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:10:01,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265682170] [2021-11-20 06:10:01,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265682170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:10:01,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:10:01,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:10:01,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16523743] [2021-11-20 06:10:01,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:10:01,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:10:01,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:10:01,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:10:01,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:10:01,706 INFO L87 Difference]: Start difference. First operand 61134 states and 90674 transitions. Second operand has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:10:08,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:10:08,423 INFO L93 Difference]: Finished difference Result 179944 states and 266593 transitions. [2021-11-20 06:10:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:10:08,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2021-11-20 06:10:08,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:10:08,651 INFO L225 Difference]: With dead ends: 179944 [2021-11-20 06:10:08,651 INFO L226 Difference]: Without dead ends: 119417 [2021-11-20 06:10:08,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:10:08,909 INFO L933 BasicCegarLoop]: 1506 mSDtfsCounter, 2918 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2918 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:10:08,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2918 Valid, 2403 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:10:09,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119417 states. [2021-11-20 06:10:15,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119417 to 119402. [2021-11-20 06:10:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119402 states, 119400 states have (on average 1.471574539363484) internal successors, (175706), 119401 states have internal predecessors, (175706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)