./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd71ba45-8385-4b34-8b87-aa389d8678e7/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd71ba45-8385-4b34-8b87-aa389d8678e7/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd71ba45-8385-4b34-8b87-aa389d8678e7/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd71ba45-8385-4b34-8b87-aa389d8678e7/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd71ba45-8385-4b34-8b87-aa389d8678e7/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd71ba45-8385-4b34-8b87-aa389d8678e7/bin/uautomizer-w2VwFs6gM0 --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 f02c38ef7caa0913e815c21ae4fcfcf6b07193a4f02fe1bf68067d0ca7ac604d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:29:52,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:29:52,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:29:52,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:29:52,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:29:52,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:29:52,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:29:52,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:29:52,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:29:52,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:29:52,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:29:52,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:29:52,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:29:52,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:29:52,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:29:52,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:29:52,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:29:52,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:29:52,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:29:52,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:29:52,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:29:52,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:29:52,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:29:52,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:29:52,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:29:52,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:29:52,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:29:52,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:29:52,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:29:52,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:29:52,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:29:52,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:29:52,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:29:52,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:29:52,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:29:52,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:29:52,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:29:52,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:29:52,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:29:52,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:29:52,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:29:52,972 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd71ba45-8385-4b34-8b87-aa389d8678e7/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:29:53,022 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:29:53,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:29:53,023 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:29:53,023 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:29:53,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:29:53,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:29:53,025 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:29:53,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:29:53,026 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:29:53,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:29:53,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:29:53,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:29:53,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:29:53,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:29:53,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:29:53,029 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:29:53,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:29:53,029 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:29:53,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:29:53,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:29:53,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:29:53,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:29:53,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:29:53,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:29:53,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:29:53,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:29:53,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:29:53,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:29:53,032 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:29:53,033 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:29:53,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:29:53,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:29:53,034 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_fd71ba45-8385-4b34-8b87-aa389d8678e7/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd71ba45-8385-4b34-8b87-aa389d8678e7/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f02c38ef7caa0913e815c21ae4fcfcf6b07193a4f02fe1bf68067d0ca7ac604d [2021-11-22 15:29:53,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:29:53,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:29:53,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:29:53,416 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:29:53,417 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:29:53,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd71ba45-8385-4b34-8b87-aa389d8678e7/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c [2021-11-22 15:29:53,492 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd71ba45-8385-4b34-8b87-aa389d8678e7/bin/uautomizer-w2VwFs6gM0/data/a0e610e97/a2155a0203ce4baa876cb56d4cf3d109/FLAGe6fb3403b [2021-11-22 15:29:54,811 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:29:54,812 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd71ba45-8385-4b34-8b87-aa389d8678e7/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c [2021-11-22 15:29:54,884 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd71ba45-8385-4b34-8b87-aa389d8678e7/bin/uautomizer-w2VwFs6gM0/data/a0e610e97/a2155a0203ce4baa876cb56d4cf3d109/FLAGe6fb3403b [2021-11-22 15:29:55,029 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd71ba45-8385-4b34-8b87-aa389d8678e7/bin/uautomizer-w2VwFs6gM0/data/a0e610e97/a2155a0203ce4baa876cb56d4cf3d109 [2021-11-22 15:29:55,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:29:55,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:29:55,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:29:55,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:29:55,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:29:55,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:29:55" (1/1) ... [2021-11-22 15:29:55,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f59c6cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:55, skipping insertion in model container [2021-11-22 15:29:55,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:29:55" (1/1) ... [2021-11-22 15:29:55,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:29:55,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:29:57,860 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_fd71ba45-8385-4b34-8b87-aa389d8678e7/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c[381679,381692] [2021-11-22 15:29:57,896 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_fd71ba45-8385-4b34-8b87-aa389d8678e7/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c[383339,383352] [2021-11-22 15:29:58,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:29:58,309 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:29:59,754 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_fd71ba45-8385-4b34-8b87-aa389d8678e7/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c[381679,381692] [2021-11-22 15:29:59,761 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_fd71ba45-8385-4b34-8b87-aa389d8678e7/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c[383339,383352] [2021-11-22 15:29:59,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:29:59,905 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:29:59,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:59 WrapperNode [2021-11-22 15:29:59,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:29:59,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:29:59,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:29:59,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:29:59,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:59" (1/1) ... [2021-11-22 15:30:00,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:59" (1/1) ... [2021-11-22 15:30:00,803 INFO L137 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 69, calls inlined = 248, statements flattened = 16188 [2021-11-22 15:30:00,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:30:00,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:30:00,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:30:00,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:30:00,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:59" (1/1) ... [2021-11-22 15:30:00,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:59" (1/1) ... [2021-11-22 15:30:00,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:59" (1/1) ... [2021-11-22 15:30:00,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:59" (1/1) ... [2021-11-22 15:30:01,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:59" (1/1) ... [2021-11-22 15:30:01,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:59" (1/1) ... [2021-11-22 15:30:01,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:59" (1/1) ... [2021-11-22 15:30:01,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:30:01,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:30:01,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:30:01,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:30:01,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:59" (1/1) ... [2021-11-22 15:30:01,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:30:01,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd71ba45-8385-4b34-8b87-aa389d8678e7/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:30:01,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd71ba45-8385-4b34-8b87-aa389d8678e7/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:30:01,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd71ba45-8385-4b34-8b87-aa389d8678e7/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:30:01,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:30:01,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:30:01,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:30:01,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:30:02,019 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:30:02,021 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:30:11,177 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:30:11,227 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:30:11,228 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-11-22 15:30:11,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:30:11 BoogieIcfgContainer [2021-11-22 15:30:11,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:30:11,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:30:11,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:30:11,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:30:11,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:29:55" (1/3) ... [2021-11-22 15:30:11,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b7809a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:30:11, skipping insertion in model container [2021-11-22 15:30:11,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:59" (2/3) ... [2021-11-22 15:30:11,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b7809a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:30:11, skipping insertion in model container [2021-11-22 15:30:11,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:30:11" (3/3) ... [2021-11-22 15:30:11,246 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.11.cil-2.c [2021-11-22 15:30:11,251 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:30:11,252 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-22 15:30:11,334 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:30:11,343 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 [2021-11-22 15:30:11,343 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-22 15:30:11,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 3756 states, 3753 states have (on average 1.7172928324007461) internal successors, (6445), 3755 states have internal predecessors, (6445), 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) [2021-11-22 15:30:11,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:11,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:11,470 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] [2021-11-22 15:30:11,471 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:11,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:11,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1990044540, now seen corresponding path program 1 times [2021-11-22 15:30:11,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:11,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925012686] [2021-11-22 15:30:11,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:11,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:11,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:11,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:11,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925012686] [2021-11-22 15:30:11,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925012686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:11,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:11,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:11,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913525220] [2021-11-22 15:30:11,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:11,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:30:11,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:11,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:30:11,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:11,922 INFO L87 Difference]: Start difference. First operand has 3756 states, 3753 states have (on average 1.7172928324007461) internal successors, (6445), 3755 states have internal predecessors, (6445), 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 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:12,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:12,266 INFO L93 Difference]: Finished difference Result 7502 states and 12871 transitions. [2021-11-22 15:30:12,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:30:12,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:12,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:12,318 INFO L225 Difference]: With dead ends: 7502 [2021-11-22 15:30:12,318 INFO L226 Difference]: Without dead ends: 3689 [2021-11-22 15:30:12,332 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 [2021-11-22 15:30:12,338 INFO L933 BasicCegarLoop]: 6352 mSDtfsCounter, 2321 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2321 SdHoareTripleChecker+Valid, 10374 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:12,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2321 Valid, 10374 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:12,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2021-11-22 15:30:12,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 3689. [2021-11-22 15:30:12,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3689 states, 3687 states have (on average 1.7043666937889883) internal successors, (6284), 3688 states have internal predecessors, (6284), 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) [2021-11-22 15:30:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 6284 transitions. [2021-11-22 15:30:12,566 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 6284 transitions. Word has length 154 [2021-11-22 15:30:12,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:12,567 INFO L470 AbstractCegarLoop]: Abstraction has 3689 states and 6284 transitions. [2021-11-22 15:30:12,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:12,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 6284 transitions. [2021-11-22 15:30:12,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:12,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:12,574 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] [2021-11-22 15:30:12,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:30:12,574 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:12,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:12,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1878368258, now seen corresponding path program 1 times [2021-11-22 15:30:12,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:12,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842820157] [2021-11-22 15:30:12,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:12,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:12,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:12,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842820157] [2021-11-22 15:30:12,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842820157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:12,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:12,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:30:12,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663781173] [2021-11-22 15:30:12,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:12,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:30:12,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:12,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:30:12,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:12,737 INFO L87 Difference]: Start difference. First operand 3689 states and 6284 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:30:12,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:12,932 INFO L93 Difference]: Finished difference Result 6570 states and 10537 transitions. [2021-11-22 15:30:12,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:30:12,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:12,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:12,962 INFO L225 Difference]: With dead ends: 6570 [2021-11-22 15:30:12,963 INFO L226 Difference]: Without dead ends: 5020 [2021-11-22 15:30:12,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:12,974 INFO L933 BasicCegarLoop]: 6278 mSDtfsCounter, 6138 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6138 SdHoareTripleChecker+Valid, 8351 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:12,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6138 Valid, 8351 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:12,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5020 states. [2021-11-22 15:30:13,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5020 to 5018. [2021-11-22 15:30:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.641945773524721) internal successors, (8236), 5017 states have internal predecessors, (8236), 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) [2021-11-22 15:30:13,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8236 transitions. [2021-11-22 15:30:13,309 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8236 transitions. Word has length 154 [2021-11-22 15:30:13,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:13,311 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8236 transitions. [2021-11-22 15:30:13,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:30:13,311 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8236 transitions. [2021-11-22 15:30:13,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:13,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:13,317 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] [2021-11-22 15:30:13,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:30:13,320 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:13,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:13,321 INFO L85 PathProgramCache]: Analyzing trace with hash 450889794, now seen corresponding path program 1 times [2021-11-22 15:30:13,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:13,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229022691] [2021-11-22 15:30:13,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:13,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:13,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:13,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229022691] [2021-11-22 15:30:13,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229022691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:13,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:13,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:30:13,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499257035] [2021-11-22 15:30:13,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:13,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:30:13,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:13,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:30:13,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:13,460 INFO L87 Difference]: Start difference. First operand 5018 states and 8236 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:30:13,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:13,680 INFO L93 Difference]: Finished difference Result 7896 states and 12483 transitions. [2021-11-22 15:30:13,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:30:13,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:13,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:13,713 INFO L225 Difference]: With dead ends: 7896 [2021-11-22 15:30:13,713 INFO L226 Difference]: Without dead ends: 5018 [2021-11-22 15:30:13,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:13,728 INFO L933 BasicCegarLoop]: 6272 mSDtfsCounter, 6258 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6258 SdHoareTripleChecker+Valid, 6272 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:13,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6258 Valid, 6272 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:13,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5018 states. [2021-11-22 15:30:13,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5018 to 5018. [2021-11-22 15:30:13,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6403508771929824) internal successors, (8228), 5017 states have internal predecessors, (8228), 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) [2021-11-22 15:30:13,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8228 transitions. [2021-11-22 15:30:13,949 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8228 transitions. Word has length 154 [2021-11-22 15:30:13,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:13,950 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8228 transitions. [2021-11-22 15:30:13,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:30:13,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8228 transitions. [2021-11-22 15:30:13,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:13,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:13,955 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] [2021-11-22 15:30:13,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:30:13,956 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:13,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:13,957 INFO L85 PathProgramCache]: Analyzing trace with hash 820484098, now seen corresponding path program 1 times [2021-11-22 15:30:13,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:13,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202442063] [2021-11-22 15:30:13,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:13,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:14,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:14,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:14,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202442063] [2021-11-22 15:30:14,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202442063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:14,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:14,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:30:14,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614697301] [2021-11-22 15:30:14,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:14,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:30:14,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:14,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:30:14,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:14,075 INFO L87 Difference]: Start difference. First operand 5018 states and 8228 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:30:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:14,301 INFO L93 Difference]: Finished difference Result 7895 states and 12466 transitions. [2021-11-22 15:30:14,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:30:14,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:14,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:14,331 INFO L225 Difference]: With dead ends: 7895 [2021-11-22 15:30:14,332 INFO L226 Difference]: Without dead ends: 5018 [2021-11-22 15:30:14,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:14,346 INFO L933 BasicCegarLoop]: 6267 mSDtfsCounter, 6252 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6252 SdHoareTripleChecker+Valid, 6267 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:14,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6252 Valid, 6267 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:14,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5018 states. [2021-11-22 15:30:14,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5018 to 5018. [2021-11-22 15:30:14,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.638755980861244) internal successors, (8220), 5017 states have internal predecessors, (8220), 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) [2021-11-22 15:30:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8220 transitions. [2021-11-22 15:30:14,587 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8220 transitions. Word has length 154 [2021-11-22 15:30:14,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:14,588 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8220 transitions. [2021-11-22 15:30:14,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:30:14,589 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8220 transitions. [2021-11-22 15:30:14,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:14,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:14,592 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] [2021-11-22 15:30:14,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:30:14,593 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:14,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:14,596 INFO L85 PathProgramCache]: Analyzing trace with hash -137424830, now seen corresponding path program 1 times [2021-11-22 15:30:14,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:14,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635303419] [2021-11-22 15:30:14,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:14,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:14,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:14,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635303419] [2021-11-22 15:30:14,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635303419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:14,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:14,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:14,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594998948] [2021-11-22 15:30:14,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:14,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:14,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:14,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:14,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:14,698 INFO L87 Difference]: Start difference. First operand 5018 states and 8220 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:15,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:15,161 INFO L93 Difference]: Finished difference Result 10661 states and 16512 transitions. [2021-11-22 15:30:15,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:15,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:15,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:15,216 INFO L225 Difference]: With dead ends: 10661 [2021-11-22 15:30:15,216 INFO L226 Difference]: Without dead ends: 7785 [2021-11-22 15:30:15,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:15,224 INFO L933 BasicCegarLoop]: 8366 mSDtfsCounter, 12512 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12512 SdHoareTripleChecker+Valid, 10472 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:15,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12512 Valid, 10472 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:15,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7785 states. [2021-11-22 15:30:15,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7785 to 5018. [2021-11-22 15:30:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.638157894736842) internal successors, (8217), 5017 states have internal predecessors, (8217), 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) [2021-11-22 15:30:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8217 transitions. [2021-11-22 15:30:15,464 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8217 transitions. Word has length 154 [2021-11-22 15:30:15,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:15,465 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8217 transitions. [2021-11-22 15:30:15,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:15,469 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8217 transitions. [2021-11-22 15:30:15,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:15,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:15,472 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] [2021-11-22 15:30:15,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:30:15,472 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:15,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:15,473 INFO L85 PathProgramCache]: Analyzing trace with hash 226041668, now seen corresponding path program 1 times [2021-11-22 15:30:15,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:15,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264970855] [2021-11-22 15:30:15,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:15,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:15,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:15,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264970855] [2021-11-22 15:30:15,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264970855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:15,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:15,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:15,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523592206] [2021-11-22 15:30:15,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:15,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:15,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:15,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:15,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:15,531 INFO L87 Difference]: Start difference. First operand 5018 states and 8217 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:15,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:15,975 INFO L93 Difference]: Finished difference Result 10659 states and 16501 transitions. [2021-11-22 15:30:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:15,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:15,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:15,997 INFO L225 Difference]: With dead ends: 10659 [2021-11-22 15:30:15,997 INFO L226 Difference]: Without dead ends: 7784 [2021-11-22 15:30:16,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:16,006 INFO L933 BasicCegarLoop]: 8361 mSDtfsCounter, 12507 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12507 SdHoareTripleChecker+Valid, 10464 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:16,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12507 Valid, 10464 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:16,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7784 states. [2021-11-22 15:30:16,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7784 to 5018. [2021-11-22 15:30:16,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.63755980861244) internal successors, (8214), 5017 states have internal predecessors, (8214), 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) [2021-11-22 15:30:16,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8214 transitions. [2021-11-22 15:30:16,305 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8214 transitions. Word has length 154 [2021-11-22 15:30:16,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:16,305 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8214 transitions. [2021-11-22 15:30:16,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:16,306 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8214 transitions. [2021-11-22 15:30:16,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:16,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:16,308 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] [2021-11-22 15:30:16,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:30:16,309 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:16,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:16,309 INFO L85 PathProgramCache]: Analyzing trace with hash 514861058, now seen corresponding path program 1 times [2021-11-22 15:30:16,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:16,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676476528] [2021-11-22 15:30:16,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:16,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:16,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:16,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676476528] [2021-11-22 15:30:16,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676476528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:16,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:16,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:16,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783891716] [2021-11-22 15:30:16,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:16,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:16,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:16,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:16,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:16,365 INFO L87 Difference]: Start difference. First operand 5018 states and 8214 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:16,826 INFO L93 Difference]: Finished difference Result 10657 states and 16490 transitions. [2021-11-22 15:30:16,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:16,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:16,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:16,847 INFO L225 Difference]: With dead ends: 10657 [2021-11-22 15:30:16,848 INFO L226 Difference]: Without dead ends: 7783 [2021-11-22 15:30:16,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:16,857 INFO L933 BasicCegarLoop]: 8356 mSDtfsCounter, 12502 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12502 SdHoareTripleChecker+Valid, 10456 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:16,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12502 Valid, 10456 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:16,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7783 states. [2021-11-22 15:30:17,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7783 to 5018. [2021-11-22 15:30:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6369617224880382) internal successors, (8211), 5017 states have internal predecessors, (8211), 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) [2021-11-22 15:30:17,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8211 transitions. [2021-11-22 15:30:17,163 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8211 transitions. Word has length 154 [2021-11-22 15:30:17,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:17,164 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8211 transitions. [2021-11-22 15:30:17,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:17,165 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8211 transitions. [2021-11-22 15:30:17,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:17,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:17,168 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] [2021-11-22 15:30:17,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:30:17,169 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:17,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:17,170 INFO L85 PathProgramCache]: Analyzing trace with hash -30011516, now seen corresponding path program 1 times [2021-11-22 15:30:17,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:17,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138070043] [2021-11-22 15:30:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:17,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:17,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:17,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:17,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138070043] [2021-11-22 15:30:17,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138070043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:17,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:17,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:17,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684398170] [2021-11-22 15:30:17,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:17,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:17,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:17,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:17,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:17,234 INFO L87 Difference]: Start difference. First operand 5018 states and 8211 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:17,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:17,868 INFO L93 Difference]: Finished difference Result 10655 states and 16479 transitions. [2021-11-22 15:30:17,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:17,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:17,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:17,890 INFO L225 Difference]: With dead ends: 10655 [2021-11-22 15:30:17,890 INFO L226 Difference]: Without dead ends: 7782 [2021-11-22 15:30:17,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:17,899 INFO L933 BasicCegarLoop]: 6514 mSDtfsCounter, 14336 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14336 SdHoareTripleChecker+Valid, 8611 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:17,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14336 Valid, 8611 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:17,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7782 states. [2021-11-22 15:30:18,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7782 to 5018. [2021-11-22 15:30:18,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6363636363636365) internal successors, (8208), 5017 states have internal predecessors, (8208), 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) [2021-11-22 15:30:18,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8208 transitions. [2021-11-22 15:30:18,277 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8208 transitions. Word has length 154 [2021-11-22 15:30:18,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:18,279 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8208 transitions. [2021-11-22 15:30:18,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:18,279 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8208 transitions. [2021-11-22 15:30:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:18,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:18,283 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] [2021-11-22 15:30:18,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:30:18,283 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:18,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:18,284 INFO L85 PathProgramCache]: Analyzing trace with hash 645148610, now seen corresponding path program 1 times [2021-11-22 15:30:18,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:18,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743296451] [2021-11-22 15:30:18,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:18,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:18,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:18,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:18,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743296451] [2021-11-22 15:30:18,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743296451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:18,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:18,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:18,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788004688] [2021-11-22 15:30:18,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:18,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:18,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:18,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:18,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:18,352 INFO L87 Difference]: Start difference. First operand 5018 states and 8208 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:18,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:18,992 INFO L93 Difference]: Finished difference Result 10651 states and 16464 transitions. [2021-11-22 15:30:18,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:18,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:18,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:19,014 INFO L225 Difference]: With dead ends: 10651 [2021-11-22 15:30:19,014 INFO L226 Difference]: Without dead ends: 7780 [2021-11-22 15:30:19,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:19,024 INFO L933 BasicCegarLoop]: 8344 mSDtfsCounter, 12491 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12491 SdHoareTripleChecker+Valid, 10436 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:19,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12491 Valid, 10436 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:19,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7780 states. [2021-11-22 15:30:19,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7780 to 5018. [2021-11-22 15:30:19,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6357655502392345) internal successors, (8205), 5017 states have internal predecessors, (8205), 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) [2021-11-22 15:30:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8205 transitions. [2021-11-22 15:30:19,343 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8205 transitions. Word has length 154 [2021-11-22 15:30:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:19,344 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8205 transitions. [2021-11-22 15:30:19,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:19,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8205 transitions. [2021-11-22 15:30:19,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:19,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:19,347 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] [2021-11-22 15:30:19,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:30:19,348 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:19,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:19,353 INFO L85 PathProgramCache]: Analyzing trace with hash 60376960, now seen corresponding path program 1 times [2021-11-22 15:30:19,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:19,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399387253] [2021-11-22 15:30:19,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:19,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:19,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:19,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399387253] [2021-11-22 15:30:19,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399387253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:19,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:19,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:19,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225051076] [2021-11-22 15:30:19,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:19,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:19,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:19,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:19,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:19,409 INFO L87 Difference]: Start difference. First operand 5018 states and 8205 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:19,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:19,870 INFO L93 Difference]: Finished difference Result 10649 states and 16453 transitions. [2021-11-22 15:30:19,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:19,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:19,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:19,890 INFO L225 Difference]: With dead ends: 10649 [2021-11-22 15:30:19,890 INFO L226 Difference]: Without dead ends: 7779 [2021-11-22 15:30:19,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:19,897 INFO L933 BasicCegarLoop]: 8339 mSDtfsCounter, 12486 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12486 SdHoareTripleChecker+Valid, 10428 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:19,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12486 Valid, 10428 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:19,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7779 states. [2021-11-22 15:30:20,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7779 to 5018. [2021-11-22 15:30:20,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6351674641148326) internal successors, (8202), 5017 states have internal predecessors, (8202), 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) [2021-11-22 15:30:20,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8202 transitions. [2021-11-22 15:30:20,174 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8202 transitions. Word has length 154 [2021-11-22 15:30:20,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:20,174 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8202 transitions. [2021-11-22 15:30:20,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:20,174 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8202 transitions. [2021-11-22 15:30:20,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:20,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:20,177 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] [2021-11-22 15:30:20,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:30:20,178 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:20,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:20,178 INFO L85 PathProgramCache]: Analyzing trace with hash -374128638, now seen corresponding path program 1 times [2021-11-22 15:30:20,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:20,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442119329] [2021-11-22 15:30:20,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:20,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:20,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:20,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:20,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442119329] [2021-11-22 15:30:20,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442119329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:20,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:20,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:20,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961957476] [2021-11-22 15:30:20,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:20,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:20,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:20,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:20,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:20,230 INFO L87 Difference]: Start difference. First operand 5018 states and 8202 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:20,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:20,765 INFO L93 Difference]: Finished difference Result 10647 states and 16442 transitions. [2021-11-22 15:30:20,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:20,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:20,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:20,785 INFO L225 Difference]: With dead ends: 10647 [2021-11-22 15:30:20,785 INFO L226 Difference]: Without dead ends: 7778 [2021-11-22 15:30:20,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:20,794 INFO L933 BasicCegarLoop]: 8334 mSDtfsCounter, 12481 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12481 SdHoareTripleChecker+Valid, 10420 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:20,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12481 Valid, 10420 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:20,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7778 states. [2021-11-22 15:30:21,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7778 to 5018. [2021-11-22 15:30:21,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6345693779904307) internal successors, (8199), 5017 states have internal predecessors, (8199), 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) [2021-11-22 15:30:21,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8199 transitions. [2021-11-22 15:30:21,089 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8199 transitions. Word has length 154 [2021-11-22 15:30:21,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:21,090 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8199 transitions. [2021-11-22 15:30:21,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:21,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8199 transitions. [2021-11-22 15:30:21,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:21,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:21,094 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] [2021-11-22 15:30:21,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:30:21,094 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:21,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:21,095 INFO L85 PathProgramCache]: Analyzing trace with hash -803786944, now seen corresponding path program 1 times [2021-11-22 15:30:21,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:21,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595394825] [2021-11-22 15:30:21,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:21,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:21,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:21,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:21,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595394825] [2021-11-22 15:30:21,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595394825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:21,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:21,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:21,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227136387] [2021-11-22 15:30:21,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:21,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:21,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:21,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:21,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:21,158 INFO L87 Difference]: Start difference. First operand 5018 states and 8199 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:21,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:21,646 INFO L93 Difference]: Finished difference Result 10645 states and 16431 transitions. [2021-11-22 15:30:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:21,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:21,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:21,665 INFO L225 Difference]: With dead ends: 10645 [2021-11-22 15:30:21,665 INFO L226 Difference]: Without dead ends: 7777 [2021-11-22 15:30:21,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:21,673 INFO L933 BasicCegarLoop]: 8329 mSDtfsCounter, 12476 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12476 SdHoareTripleChecker+Valid, 10412 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:21,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12476 Valid, 10412 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:21,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7777 states. [2021-11-22 15:30:21,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7777 to 5018. [2021-11-22 15:30:21,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6339712918660287) internal successors, (8196), 5017 states have internal predecessors, (8196), 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) [2021-11-22 15:30:21,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8196 transitions. [2021-11-22 15:30:21,988 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8196 transitions. Word has length 154 [2021-11-22 15:30:21,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:21,989 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8196 transitions. [2021-11-22 15:30:21,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:21,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8196 transitions. [2021-11-22 15:30:21,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:21,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:21,992 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] [2021-11-22 15:30:21,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:30:21,992 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:21,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:21,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1510383550, now seen corresponding path program 1 times [2021-11-22 15:30:21,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:21,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748204029] [2021-11-22 15:30:21,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:21,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:22,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:22,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748204029] [2021-11-22 15:30:22,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748204029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:22,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:22,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:22,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701745897] [2021-11-22 15:30:22,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:22,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:22,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:22,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:22,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:22,048 INFO L87 Difference]: Start difference. First operand 5018 states and 8196 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:22,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:22,687 INFO L93 Difference]: Finished difference Result 10473 states and 16178 transitions. [2021-11-22 15:30:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:22,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:22,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:22,706 INFO L225 Difference]: With dead ends: 10473 [2021-11-22 15:30:22,706 INFO L226 Difference]: Without dead ends: 7606 [2021-11-22 15:30:22,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:22,713 INFO L933 BasicCegarLoop]: 8147 mSDtfsCounter, 12347 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12347 SdHoareTripleChecker+Valid, 10197 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:22,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12347 Valid, 10197 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:30:22,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2021-11-22 15:30:23,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 5018. [2021-11-22 15:30:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6333732057416268) internal successors, (8193), 5017 states have internal predecessors, (8193), 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) [2021-11-22 15:30:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8193 transitions. [2021-11-22 15:30:23,043 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8193 transitions. Word has length 154 [2021-11-22 15:30:23,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:23,044 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8193 transitions. [2021-11-22 15:30:23,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:23,044 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8193 transitions. [2021-11-22 15:30:23,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:23,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:23,047 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] [2021-11-22 15:30:23,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:30:23,048 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:23,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:23,049 INFO L85 PathProgramCache]: Analyzing trace with hash -563345664, now seen corresponding path program 1 times [2021-11-22 15:30:23,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:23,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656524468] [2021-11-22 15:30:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:23,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:23,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:23,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656524468] [2021-11-22 15:30:23,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656524468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:23,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:23,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:23,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718589040] [2021-11-22 15:30:23,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:23,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:23,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:23,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:23,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:23,124 INFO L87 Difference]: Start difference. First operand 5018 states and 8193 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:23,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:23,739 INFO L93 Difference]: Finished difference Result 10469 states and 16165 transitions. [2021-11-22 15:30:23,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:23,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:23,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:23,759 INFO L225 Difference]: With dead ends: 10469 [2021-11-22 15:30:23,760 INFO L226 Difference]: Without dead ends: 7603 [2021-11-22 15:30:23,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:23,768 INFO L933 BasicCegarLoop]: 8141 mSDtfsCounter, 12341 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12341 SdHoareTripleChecker+Valid, 10188 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:23,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12341 Valid, 10188 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:30:23,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7603 states. [2021-11-22 15:30:24,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7603 to 5018. [2021-11-22 15:30:24,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6327751196172249) internal successors, (8190), 5017 states have internal predecessors, (8190), 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) [2021-11-22 15:30:24,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8190 transitions. [2021-11-22 15:30:24,100 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8190 transitions. Word has length 154 [2021-11-22 15:30:24,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:24,100 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8190 transitions. [2021-11-22 15:30:24,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:24,101 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8190 transitions. [2021-11-22 15:30:24,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:24,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:24,103 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] [2021-11-22 15:30:24,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:30:24,104 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:24,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:24,105 INFO L85 PathProgramCache]: Analyzing trace with hash 298487938, now seen corresponding path program 1 times [2021-11-22 15:30:24,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:24,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41061074] [2021-11-22 15:30:24,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:24,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:24,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:24,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41061074] [2021-11-22 15:30:24,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41061074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:24,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:24,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:30:24,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865131642] [2021-11-22 15:30:24,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:24,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:30:24,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:24,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:30:24,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:24,165 INFO L87 Difference]: Start difference. First operand 5018 states and 8190 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:30:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:24,514 INFO L93 Difference]: Finished difference Result 7883 states and 12377 transitions. [2021-11-22 15:30:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:30:24,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:24,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:24,527 INFO L225 Difference]: With dead ends: 7883 [2021-11-22 15:30:24,527 INFO L226 Difference]: Without dead ends: 5018 [2021-11-22 15:30:24,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:24,535 INFO L933 BasicCegarLoop]: 6214 mSDtfsCounter, 6079 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6079 SdHoareTripleChecker+Valid, 6332 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:24,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6079 Valid, 6332 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:24,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5018 states. [2021-11-22 15:30:24,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5018 to 5018. [2021-11-22 15:30:24,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6259968102073366) internal successors, (8156), 5017 states have internal predecessors, (8156), 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) [2021-11-22 15:30:24,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8156 transitions. [2021-11-22 15:30:24,940 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8156 transitions. Word has length 154 [2021-11-22 15:30:24,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:24,940 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8156 transitions. [2021-11-22 15:30:24,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:30:24,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8156 transitions. [2021-11-22 15:30:24,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:24,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:24,944 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] [2021-11-22 15:30:24,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:30:24,945 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:24,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:24,945 INFO L85 PathProgramCache]: Analyzing trace with hash 432479681, now seen corresponding path program 1 times [2021-11-22 15:30:24,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:24,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660496417] [2021-11-22 15:30:24,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:24,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:25,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:25,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660496417] [2021-11-22 15:30:25,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660496417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:25,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:25,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:25,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468397362] [2021-11-22 15:30:25,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:25,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:25,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:25,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:25,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:25,010 INFO L87 Difference]: Start difference. First operand 5018 states and 8156 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:25,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:25,824 INFO L93 Difference]: Finished difference Result 10465 states and 16052 transitions. [2021-11-22 15:30:25,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:25,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:25,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:25,844 INFO L225 Difference]: With dead ends: 10465 [2021-11-22 15:30:25,844 INFO L226 Difference]: Without dead ends: 7602 [2021-11-22 15:30:25,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:25,852 INFO L933 BasicCegarLoop]: 8099 mSDtfsCounter, 12298 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12298 SdHoareTripleChecker+Valid, 10123 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:25,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12298 Valid, 10123 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:30:25,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7602 states. [2021-11-22 15:30:26,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7602 to 5018. [2021-11-22 15:30:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6253987240829346) internal successors, (8153), 5017 states have internal predecessors, (8153), 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) [2021-11-22 15:30:26,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8153 transitions. [2021-11-22 15:30:26,196 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8153 transitions. Word has length 154 [2021-11-22 15:30:26,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:26,196 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8153 transitions. [2021-11-22 15:30:26,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:26,197 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8153 transitions. [2021-11-22 15:30:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:26,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:26,200 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] [2021-11-22 15:30:26,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:30:26,201 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:26,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:26,202 INFO L85 PathProgramCache]: Analyzing trace with hash -660155521, now seen corresponding path program 1 times [2021-11-22 15:30:26,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:26,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361736014] [2021-11-22 15:30:26,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:26,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:26,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:26,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361736014] [2021-11-22 15:30:26,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361736014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:26,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:26,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:26,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393263562] [2021-11-22 15:30:26,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:26,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:26,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:26,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:26,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:26,253 INFO L87 Difference]: Start difference. First operand 5018 states and 8153 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:27,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:27,045 INFO L93 Difference]: Finished difference Result 10463 states and 16041 transitions. [2021-11-22 15:30:27,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:27,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:27,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:27,064 INFO L225 Difference]: With dead ends: 10463 [2021-11-22 15:30:27,064 INFO L226 Difference]: Without dead ends: 7601 [2021-11-22 15:30:27,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:27,071 INFO L933 BasicCegarLoop]: 8094 mSDtfsCounter, 12293 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12293 SdHoareTripleChecker+Valid, 10115 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:27,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12293 Valid, 10115 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:30:27,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7601 states. [2021-11-22 15:30:27,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7601 to 5018. [2021-11-22 15:30:27,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6248006379585327) internal successors, (8150), 5017 states have internal predecessors, (8150), 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) [2021-11-22 15:30:27,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8150 transitions. [2021-11-22 15:30:27,438 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8150 transitions. Word has length 154 [2021-11-22 15:30:27,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:27,439 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8150 transitions. [2021-11-22 15:30:27,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:27,440 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8150 transitions. [2021-11-22 15:30:27,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:27,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:27,443 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] [2021-11-22 15:30:27,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:30:27,443 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:27,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:27,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1942327807, now seen corresponding path program 1 times [2021-11-22 15:30:27,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:27,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781043274] [2021-11-22 15:30:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:27,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:27,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:27,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781043274] [2021-11-22 15:30:27,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781043274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:27,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:27,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:27,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042254939] [2021-11-22 15:30:27,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:27,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:27,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:27,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:27,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:27,498 INFO L87 Difference]: Start difference. First operand 5018 states and 8150 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:28,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:28,161 INFO L93 Difference]: Finished difference Result 10461 states and 16030 transitions. [2021-11-22 15:30:28,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:28,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:28,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:28,182 INFO L225 Difference]: With dead ends: 10461 [2021-11-22 15:30:28,182 INFO L226 Difference]: Without dead ends: 7600 [2021-11-22 15:30:28,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:28,190 INFO L933 BasicCegarLoop]: 8089 mSDtfsCounter, 12288 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12288 SdHoareTripleChecker+Valid, 10107 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:28,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12288 Valid, 10107 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:30:28,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7600 states. [2021-11-22 15:30:28,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7600 to 5018. [2021-11-22 15:30:28,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6242025518341308) internal successors, (8147), 5017 states have internal predecessors, (8147), 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) [2021-11-22 15:30:28,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8147 transitions. [2021-11-22 15:30:28,656 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8147 transitions. Word has length 154 [2021-11-22 15:30:28,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:28,656 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8147 transitions. [2021-11-22 15:30:28,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:28,657 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8147 transitions. [2021-11-22 15:30:28,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:28,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:28,659 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] [2021-11-22 15:30:28,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 15:30:28,660 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:28,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:28,661 INFO L85 PathProgramCache]: Analyzing trace with hash 510163775, now seen corresponding path program 1 times [2021-11-22 15:30:28,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:28,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10055452] [2021-11-22 15:30:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:28,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:28,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:28,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10055452] [2021-11-22 15:30:28,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10055452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:28,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:28,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:30:28,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731054601] [2021-11-22 15:30:28,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:28,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:30:28,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:28,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:30:28,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:28,710 INFO L87 Difference]: Start difference. First operand 5018 states and 8147 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:30:29,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:29,090 INFO L93 Difference]: Finished difference Result 7878 states and 12285 transitions. [2021-11-22 15:30:29,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:30:29,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:29,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:29,104 INFO L225 Difference]: With dead ends: 7878 [2021-11-22 15:30:29,104 INFO L226 Difference]: Without dead ends: 5018 [2021-11-22 15:30:29,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:29,111 INFO L933 BasicCegarLoop]: 6189 mSDtfsCounter, 6050 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6050 SdHoareTripleChecker+Valid, 6306 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:29,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6050 Valid, 6306 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:29,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5018 states. [2021-11-22 15:30:29,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5018 to 5018. [2021-11-22 15:30:29,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6174242424242424) internal successors, (8113), 5017 states have internal predecessors, (8113), 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) [2021-11-22 15:30:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8113 transitions. [2021-11-22 15:30:29,428 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8113 transitions. Word has length 154 [2021-11-22 15:30:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:29,428 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8113 transitions. [2021-11-22 15:30:29,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:30:29,429 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8113 transitions. [2021-11-22 15:30:29,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:29,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:29,431 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] [2021-11-22 15:30:29,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 15:30:29,432 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:29,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:29,432 INFO L85 PathProgramCache]: Analyzing trace with hash -891858496, now seen corresponding path program 1 times [2021-11-22 15:30:29,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:29,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382081496] [2021-11-22 15:30:29,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:29,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:29,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:29,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:29,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382081496] [2021-11-22 15:30:29,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382081496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:29,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:29,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:29,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875653278] [2021-11-22 15:30:29,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:29,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:29,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:29,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:29,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:29,475 INFO L87 Difference]: Start difference. First operand 5018 states and 8113 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:30,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:30,096 INFO L93 Difference]: Finished difference Result 10457 states and 15919 transitions. [2021-11-22 15:30:30,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:30,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:30,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:30,115 INFO L225 Difference]: With dead ends: 10457 [2021-11-22 15:30:30,115 INFO L226 Difference]: Without dead ends: 7598 [2021-11-22 15:30:30,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:30,123 INFO L933 BasicCegarLoop]: 8048 mSDtfsCounter, 12245 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12245 SdHoareTripleChecker+Valid, 10045 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:30,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12245 Valid, 10045 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:30:30,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7598 states. [2021-11-22 15:30:30,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7598 to 5018. [2021-11-22 15:30:30,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6168261562998405) internal successors, (8110), 5017 states have internal predecessors, (8110), 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) [2021-11-22 15:30:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8110 transitions. [2021-11-22 15:30:30,541 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8110 transitions. Word has length 154 [2021-11-22 15:30:30,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:30,542 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8110 transitions. [2021-11-22 15:30:30,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:30,542 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8110 transitions. [2021-11-22 15:30:30,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:30,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:30,545 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] [2021-11-22 15:30:30,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 15:30:30,545 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:30,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:30,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1224501634, now seen corresponding path program 1 times [2021-11-22 15:30:30,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:30,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223012070] [2021-11-22 15:30:30,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:30,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:30,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:30,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223012070] [2021-11-22 15:30:30,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223012070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:30,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:30,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:30,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291439100] [2021-11-22 15:30:30,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:30,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:30,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:30,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:30,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:30,589 INFO L87 Difference]: Start difference. First operand 5018 states and 8110 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:31,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:31,223 INFO L93 Difference]: Finished difference Result 10455 states and 15908 transitions. [2021-11-22 15:30:31,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:31,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:31,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:31,239 INFO L225 Difference]: With dead ends: 10455 [2021-11-22 15:30:31,239 INFO L226 Difference]: Without dead ends: 7597 [2021-11-22 15:30:31,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:31,247 INFO L933 BasicCegarLoop]: 8043 mSDtfsCounter, 12240 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12240 SdHoareTripleChecker+Valid, 10037 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:31,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12240 Valid, 10037 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:30:31,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7597 states. [2021-11-22 15:30:31,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7597 to 5018. [2021-11-22 15:30:31,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6162280701754386) internal successors, (8107), 5017 states have internal predecessors, (8107), 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) [2021-11-22 15:30:31,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8107 transitions. [2021-11-22 15:30:31,728 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8107 transitions. Word has length 154 [2021-11-22 15:30:31,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:31,728 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8107 transitions. [2021-11-22 15:30:31,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:31,729 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8107 transitions. [2021-11-22 15:30:31,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:31,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:31,731 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] [2021-11-22 15:30:31,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 15:30:31,732 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:31,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:31,732 INFO L85 PathProgramCache]: Analyzing trace with hash 704430592, now seen corresponding path program 1 times [2021-11-22 15:30:31,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:31,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169223885] [2021-11-22 15:30:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:31,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:31,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:31,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169223885] [2021-11-22 15:30:31,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169223885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:31,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:31,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:31,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950594933] [2021-11-22 15:30:31,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:31,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:31,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:31,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:31,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:31,775 INFO L87 Difference]: Start difference. First operand 5018 states and 8107 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:32,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:32,433 INFO L93 Difference]: Finished difference Result 10453 states and 15897 transitions. [2021-11-22 15:30:32,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:32,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:32,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:32,446 INFO L225 Difference]: With dead ends: 10453 [2021-11-22 15:30:32,446 INFO L226 Difference]: Without dead ends: 7596 [2021-11-22 15:30:32,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:32,454 INFO L933 BasicCegarLoop]: 6384 mSDtfsCounter, 13914 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13914 SdHoareTripleChecker+Valid, 8375 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:32,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13914 Valid, 8375 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:30:32,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2021-11-22 15:30:32,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 5018. [2021-11-22 15:30:32,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.6156299840510366) internal successors, (8104), 5017 states have internal predecessors, (8104), 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) [2021-11-22 15:30:32,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 8104 transitions. [2021-11-22 15:30:32,783 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 8104 transitions. Word has length 154 [2021-11-22 15:30:32,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:32,784 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 8104 transitions. [2021-11-22 15:30:32,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-22 15:30:32,784 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 8104 transitions. [2021-11-22 15:30:32,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 15:30:32,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:32,786 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] [2021-11-22 15:30:32,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 15:30:32,787 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:32,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:32,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1588650434, now seen corresponding path program 1 times [2021-11-22 15:30:32,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:32,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331037132] [2021-11-22 15:30:32,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:32,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:32,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:32,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331037132] [2021-11-22 15:30:32,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331037132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:32,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:32,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:30:32,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631965173] [2021-11-22 15:30:32,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:32,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:30:32,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:32,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:30:32,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:32,829 INFO L87 Difference]: Start difference. First operand 5018 states and 8104 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:30:33,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:33,387 INFO L93 Difference]: Finished difference Result 10582 states and 16053 transitions. [2021-11-22 15:30:33,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:30:33,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 154 [2021-11-22 15:30:33,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:33,398 INFO L225 Difference]: With dead ends: 10582 [2021-11-22 15:30:33,398 INFO L226 Difference]: Without dead ends: 7728 [2021-11-22 15:30:33,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:33,404 INFO L933 BasicCegarLoop]: 6183 mSDtfsCounter, 6106 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6106 SdHoareTripleChecker+Valid, 8176 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:33,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6106 Valid, 8176 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:30:33,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7728 states. [2021-11-22 15:30:33,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7728 to 7562. [2021-11-22 15:30:33,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7562 states, 7560 states have (on average 1.5482804232804233) internal successors, (11705), 7561 states have internal predecessors, (11705), 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) [2021-11-22 15:30:33,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7562 states to 7562 states and 11705 transitions. [2021-11-22 15:30:33,936 INFO L78 Accepts]: Start accepts. Automaton has 7562 states and 11705 transitions. Word has length 154 [2021-11-22 15:30:33,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:33,936 INFO L470 AbstractCegarLoop]: Abstraction has 7562 states and 11705 transitions. [2021-11-22 15:30:33,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-11-22 15:30:33,937 INFO L276 IsEmpty]: Start isEmpty. Operand 7562 states and 11705 transitions. [2021-11-22 15:30:33,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:30:33,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:33,943 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:33,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 15:30:33,943 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:33,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:33,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2126079365, now seen corresponding path program 1 times [2021-11-22 15:30:33,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:33,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714986563] [2021-11-22 15:30:33,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:33,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:30:34,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:34,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714986563] [2021-11-22 15:30:34,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714986563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:34,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:34,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:30:34,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068195859] [2021-11-22 15:30:34,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:34,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:30:34,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:34,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:30:34,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:34,110 INFO L87 Difference]: Start difference. First operand 7562 states and 11705 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-11-22 15:30:35,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:35,755 INFO L93 Difference]: Finished difference Result 18213 states and 26876 transitions. [2021-11-22 15:30:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:30:35,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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 250 [2021-11-22 15:30:35,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:35,771 INFO L225 Difference]: With dead ends: 18213 [2021-11-22 15:30:35,772 INFO L226 Difference]: Without dead ends: 12819 [2021-11-22 15:30:35,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:30:35,779 INFO L933 BasicCegarLoop]: 6153 mSDtfsCounter, 8093 mSDsluCounter, 20970 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8093 SdHoareTripleChecker+Valid, 27123 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:35,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8093 Valid, 27123 Invalid, 259 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:30:35,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12819 states. [2021-11-22 15:30:36,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12819 to 7643. [2021-11-22 15:30:36,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7643 states, 7641 states have (on average 1.5390655673341185) internal successors, (11760), 7642 states have internal predecessors, (11760), 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) [2021-11-22 15:30:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7643 states to 7643 states and 11760 transitions. [2021-11-22 15:30:36,394 INFO L78 Accepts]: Start accepts. Automaton has 7643 states and 11760 transitions. Word has length 250 [2021-11-22 15:30:36,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:36,395 INFO L470 AbstractCegarLoop]: Abstraction has 7643 states and 11760 transitions. [2021-11-22 15:30:36,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-11-22 15:30:36,395 INFO L276 IsEmpty]: Start isEmpty. Operand 7643 states and 11760 transitions. [2021-11-22 15:30:36,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:30:36,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:36,401 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:36,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 15:30:36,401 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:36,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:36,402 INFO L85 PathProgramCache]: Analyzing trace with hash -32353271, now seen corresponding path program 1 times [2021-11-22 15:30:36,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:36,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680080773] [2021-11-22 15:30:36,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:36,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:30:36,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:36,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680080773] [2021-11-22 15:30:36,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680080773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:36,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:36,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:30:36,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544978839] [2021-11-22 15:30:36,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:36,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:30:36,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:36,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:30:36,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:36,472 INFO L87 Difference]: Start difference. First operand 7643 states and 11760 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-11-22 15:30:38,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:38,485 INFO L93 Difference]: Finished difference Result 23160 states and 33726 transitions. [2021-11-22 15:30:38,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:30:38,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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 250 [2021-11-22 15:30:38,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:38,504 INFO L225 Difference]: With dead ends: 23160 [2021-11-22 15:30:38,504 INFO L226 Difference]: Without dead ends: 17692 [2021-11-22 15:30:38,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:30:38,513 INFO L933 BasicCegarLoop]: 8294 mSDtfsCounter, 6866 mSDsluCounter, 21839 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6866 SdHoareTripleChecker+Valid, 30133 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:38,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6866 Valid, 30133 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:30:38,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17692 states. [2021-11-22 15:30:39,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17692 to 7802. [2021-11-22 15:30:39,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7802 states, 7800 states have (on average 1.528076923076923) internal successors, (11919), 7801 states have internal predecessors, (11919), 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) [2021-11-22 15:30:39,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7802 states to 7802 states and 11919 transitions. [2021-11-22 15:30:39,176 INFO L78 Accepts]: Start accepts. Automaton has 7802 states and 11919 transitions. Word has length 250 [2021-11-22 15:30:39,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:39,177 INFO L470 AbstractCegarLoop]: Abstraction has 7802 states and 11919 transitions. [2021-11-22 15:30:39,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-11-22 15:30:39,177 INFO L276 IsEmpty]: Start isEmpty. Operand 7802 states and 11919 transitions. [2021-11-22 15:30:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:30:39,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:39,184 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:39,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 15:30:39,185 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:39,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:39,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1951495565, now seen corresponding path program 1 times [2021-11-22 15:30:39,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:39,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231024285] [2021-11-22 15:30:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:39,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:30:39,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:39,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231024285] [2021-11-22 15:30:39,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231024285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:39,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:39,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:30:39,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115395607] [2021-11-22 15:30:39,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:39,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:30:39,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:39,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:30:39,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:39,248 INFO L87 Difference]: Start difference. First operand 7802 states and 11919 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-11-22 15:30:40,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:40,615 INFO L93 Difference]: Finished difference Result 15965 states and 23293 transitions. [2021-11-22 15:30:40,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:30:40,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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 250 [2021-11-22 15:30:40,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:40,631 INFO L225 Difference]: With dead ends: 15965 [2021-11-22 15:30:40,631 INFO L226 Difference]: Without dead ends: 10348 [2021-11-22 15:30:40,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:30:40,638 INFO L933 BasicCegarLoop]: 6139 mSDtfsCounter, 6193 mSDsluCounter, 14505 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6193 SdHoareTripleChecker+Valid, 20644 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:40,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6193 Valid, 20644 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:30:40,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10348 states. [2021-11-22 15:30:41,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10348 to 7814. [2021-11-22 15:30:41,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7814 states, 7812 states have (on average 1.5209933435739886) internal successors, (11882), 7813 states have internal predecessors, (11882), 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) [2021-11-22 15:30:41,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 11882 transitions. [2021-11-22 15:30:41,291 INFO L78 Accepts]: Start accepts. Automaton has 7814 states and 11882 transitions. Word has length 250 [2021-11-22 15:30:41,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:41,291 INFO L470 AbstractCegarLoop]: Abstraction has 7814 states and 11882 transitions. [2021-11-22 15:30:41,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-11-22 15:30:41,292 INFO L276 IsEmpty]: Start isEmpty. Operand 7814 states and 11882 transitions. [2021-11-22 15:30:41,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:30:41,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:41,299 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:41,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 15:30:41,300 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:41,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:41,300 INFO L85 PathProgramCache]: Analyzing trace with hash -891745775, now seen corresponding path program 1 times [2021-11-22 15:30:41,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:41,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992827104] [2021-11-22 15:30:41,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:41,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:41,368 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:30:41,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:41,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992827104] [2021-11-22 15:30:41,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992827104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:41,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:41,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:30:41,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962359034] [2021-11-22 15:30:41,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:41,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:30:41,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:41,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:30:41,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:41,372 INFO L87 Difference]: Start difference. First operand 7814 states and 11882 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-11-22 15:30:43,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:43,243 INFO L93 Difference]: Finished difference Result 22897 states and 33039 transitions. [2021-11-22 15:30:43,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:30:43,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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 250 [2021-11-22 15:30:43,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:43,262 INFO L225 Difference]: With dead ends: 22897 [2021-11-22 15:30:43,262 INFO L226 Difference]: Without dead ends: 17275 [2021-11-22 15:30:43,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:30:43,269 INFO L933 BasicCegarLoop]: 7622 mSDtfsCounter, 6567 mSDsluCounter, 21315 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6567 SdHoareTripleChecker+Valid, 28937 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:43,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6567 Valid, 28937 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:30:43,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17275 states. [2021-11-22 15:30:43,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17275 to 7973. [2021-11-22 15:30:43,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7973 states, 7971 states have (on average 1.5106009283653243) internal successors, (12041), 7972 states have internal predecessors, (12041), 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) [2021-11-22 15:30:43,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7973 states to 7973 states and 12041 transitions. [2021-11-22 15:30:43,986 INFO L78 Accepts]: Start accepts. Automaton has 7973 states and 12041 transitions. Word has length 250 [2021-11-22 15:30:43,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:43,986 INFO L470 AbstractCegarLoop]: Abstraction has 7973 states and 12041 transitions. [2021-11-22 15:30:43,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-11-22 15:30:43,986 INFO L276 IsEmpty]: Start isEmpty. Operand 7973 states and 12041 transitions. [2021-11-22 15:30:43,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:30:43,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:43,993 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:43,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 15:30:43,994 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:43,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:43,994 INFO L85 PathProgramCache]: Analyzing trace with hash 834359701, now seen corresponding path program 1 times [2021-11-22 15:30:43,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:43,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883370277] [2021-11-22 15:30:43,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:43,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:30:44,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:44,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883370277] [2021-11-22 15:30:44,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883370277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:44,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:44,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:30:44,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419592967] [2021-11-22 15:30:44,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:44,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:30:44,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:44,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:30:44,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:44,052 INFO L87 Difference]: Start difference. First operand 7973 states and 12041 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 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) [2021-11-22 15:30:45,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:45,471 INFO L93 Difference]: Finished difference Result 19020 states and 27290 transitions. [2021-11-22 15:30:45,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:30:45,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 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 250 [2021-11-22 15:30:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:45,489 INFO L225 Difference]: With dead ends: 19020 [2021-11-22 15:30:45,489 INFO L226 Difference]: Without dead ends: 13244 [2021-11-22 15:30:45,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:45,495 INFO L933 BasicCegarLoop]: 6164 mSDtfsCounter, 5953 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5953 SdHoareTripleChecker+Valid, 8144 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:45,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5953 Valid, 8144 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:45,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13244 states. [2021-11-22 15:30:46,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13244 to 13234. [2021-11-22 15:30:46,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13234 states, 13232 states have (on average 1.4542775090689237) internal successors, (19243), 13233 states have internal predecessors, (19243), 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) [2021-11-22 15:30:46,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13234 states to 13234 states and 19243 transitions. [2021-11-22 15:30:46,872 INFO L78 Accepts]: Start accepts. Automaton has 13234 states and 19243 transitions. Word has length 250 [2021-11-22 15:30:46,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:46,872 INFO L470 AbstractCegarLoop]: Abstraction has 13234 states and 19243 transitions. [2021-11-22 15:30:46,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 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) [2021-11-22 15:30:46,873 INFO L276 IsEmpty]: Start isEmpty. Operand 13234 states and 19243 transitions. [2021-11-22 15:30:46,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:30:46,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:46,882 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:46,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 15:30:46,883 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:46,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:46,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1321657257, now seen corresponding path program 1 times [2021-11-22 15:30:46,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:46,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849906649] [2021-11-22 15:30:46,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:46,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:46,949 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:30:46,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:46,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849906649] [2021-11-22 15:30:46,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849906649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:46,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:46,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:30:46,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11281579] [2021-11-22 15:30:46,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:46,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:30:46,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:46,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:30:46,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:46,952 INFO L87 Difference]: Start difference. First operand 13234 states and 19243 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-11-22 15:30:49,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:49,432 INFO L93 Difference]: Finished difference Result 33353 states and 47135 transitions. [2021-11-22 15:30:49,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:30:49,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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 250 [2021-11-22 15:30:49,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:49,458 INFO L225 Difference]: With dead ends: 33353 [2021-11-22 15:30:49,458 INFO L226 Difference]: Without dead ends: 22320 [2021-11-22 15:30:49,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:30:49,472 INFO L933 BasicCegarLoop]: 6280 mSDtfsCounter, 6784 mSDsluCounter, 20724 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6784 SdHoareTripleChecker+Valid, 27004 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:49,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6784 Valid, 27004 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:30:49,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22320 states. [2021-11-22 15:30:51,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22320 to 13390. [2021-11-22 15:30:51,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13390 states, 13388 states have (on average 1.4453241708993128) internal successors, (19350), 13389 states have internal predecessors, (19350), 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) [2021-11-22 15:30:51,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13390 states to 13390 states and 19350 transitions. [2021-11-22 15:30:51,105 INFO L78 Accepts]: Start accepts. Automaton has 13390 states and 19350 transitions. Word has length 250 [2021-11-22 15:30:51,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:51,106 INFO L470 AbstractCegarLoop]: Abstraction has 13390 states and 19350 transitions. [2021-11-22 15:30:51,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-11-22 15:30:51,106 INFO L276 IsEmpty]: Start isEmpty. Operand 13390 states and 19350 transitions. [2021-11-22 15:30:51,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:30:51,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:51,112 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:51,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 15:30:51,113 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:51,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:51,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1664636635, now seen corresponding path program 1 times [2021-11-22 15:30:51,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:51,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755451380] [2021-11-22 15:30:51,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:51,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:30:51,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:51,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755451380] [2021-11-22 15:30:51,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755451380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:51,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:51,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:30:51,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944576667] [2021-11-22 15:30:51,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:51,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:30:51,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:51,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:30:51,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:30:51,179 INFO L87 Difference]: Start difference. First operand 13390 states and 19350 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-11-22 15:30:54,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:54,705 INFO L93 Difference]: Finished difference Result 41695 states and 58425 transitions. [2021-11-22 15:30:54,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:30:54,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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 250 [2021-11-22 15:30:54,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:54,738 INFO L225 Difference]: With dead ends: 41695 [2021-11-22 15:30:54,738 INFO L226 Difference]: Without dead ends: 30513 [2021-11-22 15:30:54,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:30:54,749 INFO L933 BasicCegarLoop]: 7209 mSDtfsCounter, 6167 mSDsluCounter, 20644 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6167 SdHoareTripleChecker+Valid, 27853 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:54,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6167 Valid, 27853 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:30:54,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30513 states. [2021-11-22 15:30:56,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30513 to 13693. [2021-11-22 15:30:56,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13693 states, 13691 states have (on average 1.4354685559856841) internal successors, (19653), 13692 states have internal predecessors, (19653), 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) [2021-11-22 15:30:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13693 states to 13693 states and 19653 transitions. [2021-11-22 15:30:56,335 INFO L78 Accepts]: Start accepts. Automaton has 13693 states and 19653 transitions. Word has length 250 [2021-11-22 15:30:56,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:56,336 INFO L470 AbstractCegarLoop]: Abstraction has 13693 states and 19653 transitions. [2021-11-22 15:30:56,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-11-22 15:30:56,336 INFO L276 IsEmpty]: Start isEmpty. Operand 13693 states and 19653 transitions. [2021-11-22 15:30:56,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:30:56,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:56,341 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:56,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-22 15:30:56,341 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:56,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:56,342 INFO L85 PathProgramCache]: Analyzing trace with hash -2102936611, now seen corresponding path program 1 times [2021-11-22 15:30:56,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:56,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964099022] [2021-11-22 15:30:56,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:56,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:30:56,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:56,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964099022] [2021-11-22 15:30:56,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964099022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:56,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:56,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:56,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321167358] [2021-11-22 15:30:56,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:56,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:56,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:56,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:56,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:56,395 INFO L87 Difference]: Start difference. First operand 13693 states and 19653 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 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) [2021-11-22 15:31:00,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:31:00,179 INFO L93 Difference]: Finished difference Result 41388 states and 57135 transitions. [2021-11-22 15:31:00,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:31:00,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 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 250 [2021-11-22 15:31:00,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:31:00,211 INFO L225 Difference]: With dead ends: 41388 [2021-11-22 15:31:00,212 INFO L226 Difference]: Without dead ends: 29908 [2021-11-22 15:31:00,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:31:00,221 INFO L933 BasicCegarLoop]: 6201 mSDtfsCounter, 13725 mSDsluCounter, 5251 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13725 SdHoareTripleChecker+Valid, 11452 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:31:00,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13725 Valid, 11452 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:31:00,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29908 states. [2021-11-22 15:31:03,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29908 to 24212. [2021-11-22 15:31:03,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24212 states, 24210 states have (on average 1.3958694754233787) internal successors, (33794), 24211 states have internal predecessors, (33794), 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) [2021-11-22 15:31:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24212 states to 24212 states and 33794 transitions. [2021-11-22 15:31:03,283 INFO L78 Accepts]: Start accepts. Automaton has 24212 states and 33794 transitions. Word has length 250 [2021-11-22 15:31:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:31:03,283 INFO L470 AbstractCegarLoop]: Abstraction has 24212 states and 33794 transitions. [2021-11-22 15:31:03,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 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) [2021-11-22 15:31:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 24212 states and 33794 transitions. [2021-11-22 15:31:03,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:31:03,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:31:03,294 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:31:03,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-22 15:31:03,295 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:31:03,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:31:03,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2100294110, now seen corresponding path program 1 times [2021-11-22 15:31:03,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:31:03,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261801879] [2021-11-22 15:31:03,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:31:03,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:31:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:31:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:31:03,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:31:03,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261801879] [2021-11-22 15:31:03,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261801879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:31:03,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:31:03,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:31:03,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648466942] [2021-11-22 15:31:03,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:31:03,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:31:03,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:31:03,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:31:03,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:31:03,366 INFO L87 Difference]: Start difference. First operand 24212 states and 33794 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-11-22 15:31:09,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:31:09,912 INFO L93 Difference]: Finished difference Result 62791 states and 86391 transitions. [2021-11-22 15:31:09,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:31:09,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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 250 [2021-11-22 15:31:09,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:31:09,971 INFO L225 Difference]: With dead ends: 62791 [2021-11-22 15:31:09,971 INFO L226 Difference]: Without dead ends: 40796 [2021-11-22 15:31:09,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:31:09,994 INFO L933 BasicCegarLoop]: 6238 mSDtfsCounter, 6183 mSDsluCounter, 19722 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6183 SdHoareTripleChecker+Valid, 25960 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:31:09,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6183 Valid, 25960 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:31:10,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40796 states. [2021-11-22 15:31:14,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40796 to 24512. [2021-11-22 15:31:14,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24512 states, 24510 states have (on average 1.3872297021623827) internal successors, (34001), 24511 states have internal predecessors, (34001), 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) [2021-11-22 15:31:14,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24512 states to 24512 states and 34001 transitions. [2021-11-22 15:31:14,241 INFO L78 Accepts]: Start accepts. Automaton has 24512 states and 34001 transitions. Word has length 250 [2021-11-22 15:31:14,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:31:14,242 INFO L470 AbstractCegarLoop]: Abstraction has 24512 states and 34001 transitions. [2021-11-22 15:31:14,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-11-22 15:31:14,242 INFO L276 IsEmpty]: Start isEmpty. Operand 24512 states and 34001 transitions. [2021-11-22 15:31:14,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:31:14,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:31:14,254 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:31:14,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-22 15:31:14,254 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:31:14,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:31:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash 692568160, now seen corresponding path program 1 times [2021-11-22 15:31:14,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:31:14,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234766562] [2021-11-22 15:31:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:31:14,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:31:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:31:14,321 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:31:14,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:31:14,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234766562] [2021-11-22 15:31:14,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234766562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:31:14,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:31:14,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:31:14,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540087070] [2021-11-22 15:31:14,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:31:14,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:31:14,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:31:14,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:31:14,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:31:14,324 INFO L87 Difference]: Start difference. First operand 24512 states and 34001 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-11-22 15:31:19,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:31:19,991 INFO L93 Difference]: Finished difference Result 56016 states and 75909 transitions. [2021-11-22 15:31:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:31:19,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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 250 [2021-11-22 15:31:19,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:31:20,034 INFO L225 Difference]: With dead ends: 56016 [2021-11-22 15:31:20,034 INFO L226 Difference]: Without dead ends: 33728 [2021-11-22 15:31:20,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:31:20,052 INFO L933 BasicCegarLoop]: 6117 mSDtfsCounter, 5284 mSDsluCounter, 16306 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5284 SdHoareTripleChecker+Valid, 22423 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:31:20,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5284 Valid, 22423 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:31:20,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33728 states. [2021-11-22 15:31:23,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33728 to 24536. [2021-11-22 15:31:23,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24536 states, 24534 states have (on average 1.3793103448275863) internal successors, (33840), 24535 states have internal predecessors, (33840), 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) [2021-11-22 15:31:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24536 states to 24536 states and 33840 transitions. [2021-11-22 15:31:23,549 INFO L78 Accepts]: Start accepts. Automaton has 24536 states and 33840 transitions. Word has length 250 [2021-11-22 15:31:23,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:31:23,550 INFO L470 AbstractCegarLoop]: Abstraction has 24536 states and 33840 transitions. [2021-11-22 15:31:23,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-11-22 15:31:23,550 INFO L276 IsEmpty]: Start isEmpty. Operand 24536 states and 33840 transitions. [2021-11-22 15:31:23,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-22 15:31:23,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:31:23,560 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:31:23,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-22 15:31:23,561 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:31:23,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:31:23,561 INFO L85 PathProgramCache]: Analyzing trace with hash 67851236, now seen corresponding path program 1 times [2021-11-22 15:31:23,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:31:23,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026105678] [2021-11-22 15:31:23,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:31:23,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:31:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:31:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:31:23,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:31:23,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026105678] [2021-11-22 15:31:23,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026105678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:31:23,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:31:23,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:31:23,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715509156] [2021-11-22 15:31:23,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:31:23,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:31:23,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:31:23,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:31:23,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:31:23,817 INFO L87 Difference]: Start difference. First operand 24536 states and 33840 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 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) [2021-11-22 15:31:32,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:31:32,680 INFO L93 Difference]: Finished difference Result 78080 states and 105076 transitions. [2021-11-22 15:31:32,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:31:32,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 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 250 [2021-11-22 15:31:32,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:31:32,753 INFO L225 Difference]: With dead ends: 78080 [2021-11-22 15:31:32,753 INFO L226 Difference]: Without dead ends: 55777 [2021-11-22 15:31:32,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:31:32,772 INFO L933 BasicCegarLoop]: 6153 mSDtfsCounter, 13634 mSDsluCounter, 5222 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13634 SdHoareTripleChecker+Valid, 11375 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:31:32,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13634 Valid, 11375 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:31:32,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55777 states.