./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN --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 c0a29c0650858169a7f06788e2d55d3441e7b25ce879ddd70ee1db162c004af4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:27:08,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:08,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:08,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:08,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:08,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:08,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:08,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:08,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:08,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:08,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:08,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:08,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:08,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:08,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:08,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:08,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:08,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:08,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:08,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:08,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:08,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:08,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:08,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:08,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:08,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:08,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:08,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:08,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:08,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:08,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:08,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:08,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:08,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:08,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:08,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:08,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:08,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:08,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:08,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:08,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:08,111 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:27:08,133 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:08,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:08,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:08,137 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:08,137 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:08,138 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:08,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:08,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:08,139 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:08,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:08,140 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:27:08,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:08,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:27:08,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:08,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:27:08,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:08,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:27:08,141 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:27:08,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:08,142 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:08,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:27:08,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:08,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:08,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:08,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:08,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:08,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:08,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:27:08,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:08,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:08,144 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:27:08,145 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:27:08,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:27:08,145 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_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0a29c0650858169a7f06788e2d55d3441e7b25ce879ddd70ee1db162c004af4 [2022-11-20 09:27:08,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:08,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:08,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:08,467 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:08,467 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:08,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/eca-rers2012/Problem13_label50.c [2022-11-20 09:27:11,599 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:12,188 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:12,189 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/sv-benchmarks/c/eca-rers2012/Problem13_label50.c [2022-11-20 09:27:12,228 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/data/fd6c396d6/af61149d23a34bf5bfe68c782b79fb39/FLAG4e7b125e2 [2022-11-20 09:27:12,249 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/data/fd6c396d6/af61149d23a34bf5bfe68c782b79fb39 [2022-11-20 09:27:12,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:12,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:12,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:12,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:12,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:12,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4861f0ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12, skipping insertion in model container [2022-11-20 09:27:12,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:12,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:12,718 WARN L237 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_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/sv-benchmarks/c/eca-rers2012/Problem13_label50.c[8814,8827] [2022-11-20 09:27:13,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:13,970 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:14,010 WARN L237 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_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/sv-benchmarks/c/eca-rers2012/Problem13_label50.c[8814,8827] [2022-11-20 09:27:14,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:14,805 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:14,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:14 WrapperNode [2022-11-20 09:27:14,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:14,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:14,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:14,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:14,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:14" (1/1) ... [2022-11-20 09:27:14,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:14" (1/1) ... [2022-11-20 09:27:15,490 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-20 09:27:15,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:15,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:15,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:15,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:15,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:14" (1/1) ... [2022-11-20 09:27:15,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:14" (1/1) ... [2022-11-20 09:27:15,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:14" (1/1) ... [2022-11-20 09:27:15,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:14" (1/1) ... [2022-11-20 09:27:16,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:14" (1/1) ... [2022-11-20 09:27:16,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:14" (1/1) ... [2022-11-20 09:27:16,282 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:14" (1/1) ... [2022-11-20 09:27:16,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:14" (1/1) ... [2022-11-20 09:27:16,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:16,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:16,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:16,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:16,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:14" (1/1) ... [2022-11-20 09:27:16,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:16,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:16,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:16,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:16,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:16,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:27:16,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:16,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:16,685 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:16,687 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:23,313 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:23,342 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:23,343 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 09:27:23,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:23 BoogieIcfgContainer [2022-11-20 09:27:23,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:23,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:23,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:23,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:23,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:12" (1/3) ... [2022-11-20 09:27:23,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bbe7bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:23, skipping insertion in model container [2022-11-20 09:27:23,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:14" (2/3) ... [2022-11-20 09:27:23,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bbe7bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:23, skipping insertion in model container [2022-11-20 09:27:23,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:23" (3/3) ... [2022-11-20 09:27:23,359 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label50.c [2022-11-20 09:27:23,379 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:23,380 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:27:23,487 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:23,498 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f36cc23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:23,499 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 09:27:23,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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) [2022-11-20 09:27:23,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 09:27:23,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:23,522 INFO L195 NwaCegarLoop]: 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] [2022-11-20 09:27:23,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:23,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:23,529 INFO L85 PathProgramCache]: Analyzing trace with hash 531730986, now seen corresponding path program 1 times [2022-11-20 09:27:23,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:23,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478144103] [2022-11-20 09:27:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:23,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:24,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:24,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478144103] [2022-11-20 09:27:24,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478144103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:24,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:24,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:24,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514738968] [2022-11-20 09:27:24,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:24,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:24,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:24,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:24,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:24,254 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-11-20 09:27:33,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:33,909 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2022-11-20 09:27:33,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:27:33,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-11-20 09:27:33,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:33,950 INFO L225 Difference]: With dead ends: 3829 [2022-11-20 09:27:33,951 INFO L226 Difference]: Without dead ends: 2664 [2022-11-20 09:27:33,960 INFO L412 NwaCegarLoop]: 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 [2022-11-20 09:27:33,964 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 2669 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2669 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:33,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2669 Valid, 1067 Invalid, 5853 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1607 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-20 09:27:33,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2022-11-20 09:27:34,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2022-11-20 09:27:34,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 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) [2022-11-20 09:27:34,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2022-11-20 09:27:34,165 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 62 [2022-11-20 09:27:34,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:34,168 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2022-11-20 09:27:34,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-11-20 09:27:34,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2022-11-20 09:27:34,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-20 09:27:34,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:34,185 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:34,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:27:34,186 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:34,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:34,189 INFO L85 PathProgramCache]: Analyzing trace with hash 354009653, now seen corresponding path program 1 times [2022-11-20 09:27:34,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:34,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771803202] [2022-11-20 09:27:34,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:34,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:34,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:34,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771803202] [2022-11-20 09:27:34,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771803202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:34,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:34,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:34,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30216759] [2022-11-20 09:27:34,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:34,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:34,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:34,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:34,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:34,742 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 3 states have internal predecessors, (187), 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) [2022-11-20 09:27:44,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:44,910 INFO L93 Difference]: Finished difference Result 7864 states and 12669 transitions. [2022-11-20 09:27:44,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:27:44,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 3 states have internal predecessors, (187), 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 187 [2022-11-20 09:27:44,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:44,936 INFO L225 Difference]: With dead ends: 7864 [2022-11-20 09:27:44,936 INFO L226 Difference]: Without dead ends: 5990 [2022-11-20 09:27:44,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:44,942 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 1617 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 6333 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 7164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 6333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:44,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 1191 Invalid, 7164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [831 Valid, 6333 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-11-20 09:27:44,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2022-11-20 09:27:45,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5859. [2022-11-20 09:27:45,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5859 states, 5858 states have (on average 1.4452031410037556) internal successors, (8466), 5858 states have internal predecessors, (8466), 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) [2022-11-20 09:27:45,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8466 transitions. [2022-11-20 09:27:45,084 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 8466 transitions. Word has length 187 [2022-11-20 09:27:45,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:45,085 INFO L495 AbstractCegarLoop]: Abstraction has 5859 states and 8466 transitions. [2022-11-20 09:27:45,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 3 states have internal predecessors, (187), 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) [2022-11-20 09:27:45,086 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 8466 transitions. [2022-11-20 09:27:45,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-20 09:27:45,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:45,091 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:45,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:27:45,092 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:45,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:45,093 INFO L85 PathProgramCache]: Analyzing trace with hash 747152322, now seen corresponding path program 1 times [2022-11-20 09:27:45,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:45,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633314613] [2022-11-20 09:27:45,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:45,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 09:27:45,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:45,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633314613] [2022-11-20 09:27:45,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633314613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:45,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:45,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:27:45,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630104176] [2022-11-20 09:27:45,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:45,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:45,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:45,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:45,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:45,484 INFO L87 Difference]: Start difference. First operand 5859 states and 8466 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 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) [2022-11-20 09:27:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:50,611 INFO L93 Difference]: Finished difference Result 15687 states and 23390 transitions. [2022-11-20 09:27:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:50,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 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 229 [2022-11-20 09:27:50,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:50,644 INFO L225 Difference]: With dead ends: 15687 [2022-11-20 09:27:50,645 INFO L226 Difference]: Without dead ends: 10617 [2022-11-20 09:27:50,652 INFO L412 NwaCegarLoop]: 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 [2022-11-20 09:27:50,653 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 919 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:50,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 918 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 09:27:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10617 states. [2022-11-20 09:27:50,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10617 to 10608. [2022-11-20 09:27:50,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10608 states, 10607 states have (on average 1.3551428302064674) internal successors, (14374), 10607 states have internal predecessors, (14374), 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) [2022-11-20 09:27:50,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 14374 transitions. [2022-11-20 09:27:50,878 INFO L78 Accepts]: Start accepts. Automaton has 10608 states and 14374 transitions. Word has length 229 [2022-11-20 09:27:50,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:50,879 INFO L495 AbstractCegarLoop]: Abstraction has 10608 states and 14374 transitions. [2022-11-20 09:27:50,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 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) [2022-11-20 09:27:50,880 INFO L276 IsEmpty]: Start isEmpty. Operand 10608 states and 14374 transitions. [2022-11-20 09:27:50,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-20 09:27:50,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:50,957 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:50,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:27:50,958 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:50,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:50,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1134775617, now seen corresponding path program 1 times [2022-11-20 09:27:50,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:50,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052958916] [2022-11-20 09:27:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:50,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-20 09:27:51,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:51,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052958916] [2022-11-20 09:27:51,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052958916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:51,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:51,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:27:51,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838238942] [2022-11-20 09:27:51,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:51,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:51,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:51,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:51,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:51,270 INFO L87 Difference]: Start difference. First operand 10608 states and 14374 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 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) [2022-11-20 09:27:56,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:56,558 INFO L93 Difference]: Finished difference Result 28351 states and 39240 transitions. [2022-11-20 09:27:56,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:56,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2022-11-20 09:27:56,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:56,620 INFO L225 Difference]: With dead ends: 28351 [2022-11-20 09:27:56,620 INFO L226 Difference]: Without dead ends: 18532 [2022-11-20 09:27:56,632 INFO L412 NwaCegarLoop]: 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 [2022-11-20 09:27:56,633 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 909 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:56,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 613 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 09:27:56,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18532 states. [2022-11-20 09:27:56,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18532 to 18523. [2022-11-20 09:27:56,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 18522 states have (on average 1.3251268761472843) internal successors, (24544), 18522 states have internal predecessors, (24544), 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) [2022-11-20 09:27:56,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 24544 transitions. [2022-11-20 09:27:56,982 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 24544 transitions. Word has length 243 [2022-11-20 09:27:56,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:56,983 INFO L495 AbstractCegarLoop]: Abstraction has 18523 states and 24544 transitions. [2022-11-20 09:27:56,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 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) [2022-11-20 09:27:56,984 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 24544 transitions. [2022-11-20 09:27:56,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-20 09:27:56,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:56,990 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:56,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:27:56,990 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:56,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:56,991 INFO L85 PathProgramCache]: Analyzing trace with hash -251504526, now seen corresponding path program 1 times [2022-11-20 09:27:56,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:56,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568400948] [2022-11-20 09:27:56,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:56,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:57,377 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:57,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:57,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568400948] [2022-11-20 09:27:57,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568400948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:57,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:57,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:57,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945314229] [2022-11-20 09:27:57,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:57,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:57,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:57,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:57,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:57,383 INFO L87 Difference]: Start difference. First operand 18523 states and 24544 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2022-11-20 09:28:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:02,726 INFO L93 Difference]: Finished difference Result 52015 states and 69799 transitions. [2022-11-20 09:28:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:02,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 261 [2022-11-20 09:28:02,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:02,802 INFO L225 Difference]: With dead ends: 52015 [2022-11-20 09:28:02,803 INFO L226 Difference]: Without dead ends: 34281 [2022-11-20 09:28:02,823 INFO L412 NwaCegarLoop]: 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 [2022-11-20 09:28:02,824 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 851 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:02,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 952 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 09:28:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34281 states. [2022-11-20 09:28:03,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34281 to 34271. [2022-11-20 09:28:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34271 states, 34270 states have (on average 1.2549168368835717) internal successors, (43006), 34270 states have internal predecessors, (43006), 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) [2022-11-20 09:28:03,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34271 states to 34271 states and 43006 transitions. [2022-11-20 09:28:03,402 INFO L78 Accepts]: Start accepts. Automaton has 34271 states and 43006 transitions. Word has length 261 [2022-11-20 09:28:03,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:03,403 INFO L495 AbstractCegarLoop]: Abstraction has 34271 states and 43006 transitions. [2022-11-20 09:28:03,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2022-11-20 09:28:03,406 INFO L276 IsEmpty]: Start isEmpty. Operand 34271 states and 43006 transitions. [2022-11-20 09:28:03,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-11-20 09:28:03,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:03,413 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:03,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:28:03,414 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:03,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:03,415 INFO L85 PathProgramCache]: Analyzing trace with hash -341439997, now seen corresponding path program 1 times [2022-11-20 09:28:03,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:03,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351039352] [2022-11-20 09:28:03,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:03,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-11-20 09:28:03,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:03,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351039352] [2022-11-20 09:28:03,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351039352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:03,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:03,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:28:03,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828982566] [2022-11-20 09:28:03,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:03,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:03,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:03,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:03,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:03,738 INFO L87 Difference]: Start difference. First operand 34271 states and 43006 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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) [2022-11-20 09:28:08,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:08,720 INFO L93 Difference]: Finished difference Result 92929 states and 117608 transitions. [2022-11-20 09:28:08,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:08,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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 292 [2022-11-20 09:28:08,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:08,855 INFO L225 Difference]: With dead ends: 92929 [2022-11-20 09:28:08,855 INFO L226 Difference]: Without dead ends: 59447 [2022-11-20 09:28:08,888 INFO L412 NwaCegarLoop]: 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 [2022-11-20 09:28:08,891 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:08,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 986 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-20 09:28:08,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59447 states. [2022-11-20 09:28:09,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59447 to 56294. [2022-11-20 09:28:09,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56294 states, 56293 states have (on average 1.2005045032242019) internal successors, (67580), 56293 states have internal predecessors, (67580), 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) [2022-11-20 09:28:09,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56294 states to 56294 states and 67580 transitions. [2022-11-20 09:28:09,857 INFO L78 Accepts]: Start accepts. Automaton has 56294 states and 67580 transitions. Word has length 292 [2022-11-20 09:28:09,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:09,858 INFO L495 AbstractCegarLoop]: Abstraction has 56294 states and 67580 transitions. [2022-11-20 09:28:09,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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) [2022-11-20 09:28:09,859 INFO L276 IsEmpty]: Start isEmpty. Operand 56294 states and 67580 transitions. [2022-11-20 09:28:09,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-11-20 09:28:09,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:09,869 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:09,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:28:09,870 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:09,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:09,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1187004232, now seen corresponding path program 1 times [2022-11-20 09:28:09,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:09,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424156751] [2022-11-20 09:28:09,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:09,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-20 09:28:10,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:10,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424156751] [2022-11-20 09:28:10,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424156751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:10,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:10,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:10,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550975621] [2022-11-20 09:28:10,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:10,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:10,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:10,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:10,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:10,207 INFO L87 Difference]: Start difference. First operand 56294 states and 67580 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2022-11-20 09:28:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:15,983 INFO L93 Difference]: Finished difference Result 133057 states and 162012 transitions. [2022-11-20 09:28:15,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:15,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 350 [2022-11-20 09:28:15,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:16,101 INFO L225 Difference]: With dead ends: 133057 [2022-11-20 09:28:16,101 INFO L226 Difference]: Without dead ends: 77552 [2022-11-20 09:28:16,131 INFO L412 NwaCegarLoop]: 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 [2022-11-20 09:28:16,132 INFO L413 NwaCegarLoop]: 1796 mSDtfsCounter, 808 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 3265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:16,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 1947 Invalid, 3265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 09:28:16,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77552 states. [2022-11-20 09:28:17,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77552 to 76759. [2022-11-20 09:28:17,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76759 states, 76758 states have (on average 1.1668099742046432) internal successors, (89562), 76758 states have internal predecessors, (89562), 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) [2022-11-20 09:28:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76759 states to 76759 states and 89562 transitions. [2022-11-20 09:28:17,440 INFO L78 Accepts]: Start accepts. Automaton has 76759 states and 89562 transitions. Word has length 350 [2022-11-20 09:28:17,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:17,441 INFO L495 AbstractCegarLoop]: Abstraction has 76759 states and 89562 transitions. [2022-11-20 09:28:17,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2022-11-20 09:28:17,441 INFO L276 IsEmpty]: Start isEmpty. Operand 76759 states and 89562 transitions. [2022-11-20 09:28:17,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-20 09:28:17,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:17,455 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:17,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:28:17,456 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:17,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:17,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1602599278, now seen corresponding path program 1 times [2022-11-20 09:28:17,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:17,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590385278] [2022-11-20 09:28:17,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:17,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:18,208 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 09:28:18,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:18,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590385278] [2022-11-20 09:28:18,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590385278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:18,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:18,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:18,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022409617] [2022-11-20 09:28:18,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:18,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:18,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:18,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:18,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:18,211 INFO L87 Difference]: Start difference. First operand 76759 states and 89562 transitions. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2022-11-20 09:28:28,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:28,641 INFO L93 Difference]: Finished difference Result 205688 states and 241921 transitions. [2022-11-20 09:28:28,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:28,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 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 359 [2022-11-20 09:28:28,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:28,821 INFO L225 Difference]: With dead ends: 205688 [2022-11-20 09:28:28,821 INFO L226 Difference]: Without dead ends: 129718 [2022-11-20 09:28:28,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:28,861 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 1736 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6653 mSolverCounterSat, 1133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 7786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1133 IncrementalHoareTripleChecker+Valid, 6653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:28,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1736 Valid, 707 Invalid, 7786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1133 Valid, 6653 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-20 09:28:28,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129718 states. [2022-11-20 09:28:30,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129718 to 128793. [2022-11-20 09:28:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128793 states, 128792 states have (on average 1.162339275731412) internal successors, (149700), 128792 states have internal predecessors, (149700), 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) [2022-11-20 09:28:31,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128793 states to 128793 states and 149700 transitions. [2022-11-20 09:28:31,375 INFO L78 Accepts]: Start accepts. Automaton has 128793 states and 149700 transitions. Word has length 359 [2022-11-20 09:28:31,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:31,376 INFO L495 AbstractCegarLoop]: Abstraction has 128793 states and 149700 transitions. [2022-11-20 09:28:31,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2022-11-20 09:28:31,377 INFO L276 IsEmpty]: Start isEmpty. Operand 128793 states and 149700 transitions. [2022-11-20 09:28:31,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-20 09:28:31,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:31,389 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:31,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:28:31,391 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:31,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:31,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1513951045, now seen corresponding path program 1 times [2022-11-20 09:28:31,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:31,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310906709] [2022-11-20 09:28:31,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:31,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-20 09:28:32,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:32,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310906709] [2022-11-20 09:28:32,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310906709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:32,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:32,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:28:32,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772771961] [2022-11-20 09:28:32,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:32,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:32,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:32,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:32,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:32,077 INFO L87 Difference]: Start difference. First operand 128793 states and 149700 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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) [2022-11-20 09:28:37,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:37,418 INFO L93 Difference]: Finished difference Result 240271 states and 281024 transitions. [2022-11-20 09:28:37,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:37,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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 359 [2022-11-20 09:28:37,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:37,638 INFO L225 Difference]: With dead ends: 240271 [2022-11-20 09:28:37,639 INFO L226 Difference]: Without dead ends: 128806 [2022-11-20 09:28:37,718 INFO L412 NwaCegarLoop]: 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 [2022-11-20 09:28:37,730 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 730 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:37,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1199 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-20 09:28:37,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128806 states. [2022-11-20 09:28:39,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128806 to 128006. [2022-11-20 09:28:39,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128006 states, 128005 states have (on average 1.1624389672278426) internal successors, (148798), 128005 states have internal predecessors, (148798), 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) [2022-11-20 09:28:39,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128006 states to 128006 states and 148798 transitions. [2022-11-20 09:28:39,751 INFO L78 Accepts]: Start accepts. Automaton has 128006 states and 148798 transitions. Word has length 359 [2022-11-20 09:28:39,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:39,752 INFO L495 AbstractCegarLoop]: Abstraction has 128006 states and 148798 transitions. [2022-11-20 09:28:39,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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) [2022-11-20 09:28:39,752 INFO L276 IsEmpty]: Start isEmpty. Operand 128006 states and 148798 transitions. [2022-11-20 09:28:39,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-11-20 09:28:39,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:39,760 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:39,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 09:28:39,761 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:39,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:39,761 INFO L85 PathProgramCache]: Analyzing trace with hash 558961745, now seen corresponding path program 1 times [2022-11-20 09:28:39,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:39,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134612685] [2022-11-20 09:28:39,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:39,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 288 proven. 113 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 09:28:42,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:42,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134612685] [2022-11-20 09:28:42,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134612685] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:42,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963071742] [2022-11-20 09:28:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:42,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:42,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:42,308 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:42,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:28:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:42,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:28:42,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-20 09:28:42,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:42,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963071742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:42,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:28:42,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 09:28:42,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137022044] [2022-11-20 09:28:42,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:42,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:42,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:42,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:42,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:28:42,869 INFO L87 Difference]: Start difference. First operand 128006 states and 148798 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2022-11-20 09:28:48,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:48,047 INFO L93 Difference]: Finished difference Result 254434 states and 295649 transitions. [2022-11-20 09:28:48,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:48,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 388 [2022-11-20 09:28:48,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:48,196 INFO L225 Difference]: With dead ends: 254434 [2022-11-20 09:28:48,196 INFO L226 Difference]: Without dead ends: 127217 [2022-11-20 09:28:48,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:28:48,249 INFO L413 NwaCegarLoop]: 1363 mSDtfsCounter, 1122 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:48,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1444 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-20 09:28:48,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127217 states. [2022-11-20 09:28:49,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127217 to 127216. [2022-11-20 09:28:49,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127216 states, 127215 states have (on average 1.1196792831034077) internal successors, (142440), 127215 states have internal predecessors, (142440), 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) [2022-11-20 09:28:50,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127216 states to 127216 states and 142440 transitions. [2022-11-20 09:28:50,031 INFO L78 Accepts]: Start accepts. Automaton has 127216 states and 142440 transitions. Word has length 388 [2022-11-20 09:28:50,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:50,031 INFO L495 AbstractCegarLoop]: Abstraction has 127216 states and 142440 transitions. [2022-11-20 09:28:50,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2022-11-20 09:28:50,031 INFO L276 IsEmpty]: Start isEmpty. Operand 127216 states and 142440 transitions. [2022-11-20 09:28:50,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2022-11-20 09:28:50,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:50,044 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:50,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 09:28:50,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 09:28:50,246 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:50,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:50,247 INFO L85 PathProgramCache]: Analyzing trace with hash -684842412, now seen corresponding path program 1 times [2022-11-20 09:28:50,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:50,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951052812] [2022-11-20 09:28:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:50,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 466 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-20 09:28:51,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:51,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951052812] [2022-11-20 09:28:51,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951052812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:51,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:51,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:51,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087224639] [2022-11-20 09:28:51,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:51,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:51,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:51,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:51,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:51,095 INFO L87 Difference]: Start difference. First operand 127216 states and 142440 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2022-11-20 09:28:57,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:57,065 INFO L93 Difference]: Finished difference Result 279629 states and 316499 transitions. [2022-11-20 09:28:57,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:57,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 456 [2022-11-20 09:28:57,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:57,514 INFO L225 Difference]: With dead ends: 279629 [2022-11-20 09:28:57,521 INFO L226 Difference]: Without dead ends: 153202 [2022-11-20 09:28:57,553 INFO L412 NwaCegarLoop]: 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 [2022-11-20 09:28:57,554 INFO L413 NwaCegarLoop]: 1759 mSDtfsCounter, 787 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 714 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 3248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:57,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1913 Invalid, 3248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [714 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 09:28:57,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153202 states. [2022-11-20 09:28:59,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153202 to 150820. [2022-11-20 09:28:59,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150820 states, 150819 states have (on average 1.1036474184287126) internal successors, (166451), 150819 states have internal predecessors, (166451), 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) [2022-11-20 09:28:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150820 states to 150820 states and 166451 transitions. [2022-11-20 09:28:59,872 INFO L78 Accepts]: Start accepts. Automaton has 150820 states and 166451 transitions. Word has length 456 [2022-11-20 09:28:59,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:59,873 INFO L495 AbstractCegarLoop]: Abstraction has 150820 states and 166451 transitions. [2022-11-20 09:28:59,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2022-11-20 09:28:59,873 INFO L276 IsEmpty]: Start isEmpty. Operand 150820 states and 166451 transitions. [2022-11-20 09:28:59,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2022-11-20 09:28:59,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:59,892 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:59,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 09:28:59,892 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:59,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:59,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1115352886, now seen corresponding path program 1 times [2022-11-20 09:28:59,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:59,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957537816] [2022-11-20 09:28:59,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:59,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:00,656 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 09:29:00,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:00,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957537816] [2022-11-20 09:29:00,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957537816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:00,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:00,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:00,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547954540] [2022-11-20 09:29:00,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:00,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:00,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:00,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:00,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:29:00,659 INFO L87 Difference]: Start difference. First operand 150820 states and 166451 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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) [2022-11-20 09:29:08,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:08,003 INFO L93 Difference]: Finished difference Result 365544 states and 404234 transitions. [2022-11-20 09:29:08,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:08,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 466 [2022-11-20 09:29:08,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:08,298 INFO L225 Difference]: With dead ends: 365544 [2022-11-20 09:29:08,298 INFO L226 Difference]: Without dead ends: 215513 [2022-11-20 09:29:08,372 INFO L412 NwaCegarLoop]: 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 [2022-11-20 09:29:08,373 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 962 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 3084 mSolverCounterSat, 674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 3758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 674 IncrementalHoareTripleChecker+Valid, 3084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:08,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 580 Invalid, 3758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [674 Valid, 3084 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-20 09:29:08,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215513 states. [2022-11-20 09:29:11,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215513 to 214616. [2022-11-20 09:29:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214616 states, 214615 states have (on average 1.1051184679542436) internal successors, (237175), 214615 states have internal predecessors, (237175), 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) [2022-11-20 09:29:12,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214616 states to 214616 states and 237175 transitions. [2022-11-20 09:29:12,132 INFO L78 Accepts]: Start accepts. Automaton has 214616 states and 237175 transitions. Word has length 466 [2022-11-20 09:29:12,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:12,132 INFO L495 AbstractCegarLoop]: Abstraction has 214616 states and 237175 transitions. [2022-11-20 09:29:12,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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) [2022-11-20 09:29:12,133 INFO L276 IsEmpty]: Start isEmpty. Operand 214616 states and 237175 transitions. [2022-11-20 09:29:12,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2022-11-20 09:29:12,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:12,149 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:12,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 09:29:12,149 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:12,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:12,150 INFO L85 PathProgramCache]: Analyzing trace with hash -339615217, now seen corresponding path program 1 times [2022-11-20 09:29:12,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:12,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748323639] [2022-11-20 09:29:12,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:12,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 360 proven. 110 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 09:29:14,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:14,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748323639] [2022-11-20 09:29:14,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748323639] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:14,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973203849] [2022-11-20 09:29:14,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:14,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:14,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:14,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:14,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:29:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:14,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:29:14,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-20 09:29:14,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:14,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973203849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:14,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:14,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-20 09:29:14,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980661164] [2022-11-20 09:29:14,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:14,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:14,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:14,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:14,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:29:14,489 INFO L87 Difference]: Start difference. First operand 214616 states and 237175 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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) [2022-11-20 09:29:22,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:22,153 INFO L93 Difference]: Finished difference Result 463052 states and 513272 transitions. [2022-11-20 09:29:22,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:22,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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 478 [2022-11-20 09:29:22,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:22,594 INFO L225 Difference]: With dead ends: 463052 [2022-11-20 09:29:22,594 INFO L226 Difference]: Without dead ends: 267336 [2022-11-20 09:29:22,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:29:22,722 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 937 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 759 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 3421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 759 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:22,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 1762 Invalid, 3421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [759 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-20 09:29:22,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267336 states. [2022-11-20 09:29:26,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267336 to 246068. [2022-11-20 09:29:26,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246068 states, 246067 states have (on average 1.0949660051937073) internal successors, (269435), 246067 states have internal predecessors, (269435), 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) [2022-11-20 09:29:26,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246068 states to 246068 states and 269435 transitions. [2022-11-20 09:29:26,919 INFO L78 Accepts]: Start accepts. Automaton has 246068 states and 269435 transitions. Word has length 478 [2022-11-20 09:29:26,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:26,920 INFO L495 AbstractCegarLoop]: Abstraction has 246068 states and 269435 transitions. [2022-11-20 09:29:26,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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) [2022-11-20 09:29:26,920 INFO L276 IsEmpty]: Start isEmpty. Operand 246068 states and 269435 transitions. [2022-11-20 09:29:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2022-11-20 09:29:26,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:26,936 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:26,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:27,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac29f42-d8eb-428c-bdcb-72e44cbd3d48/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 09:29:27,137 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:27,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:27,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1020324039, now seen corresponding path program 1 times [2022-11-20 09:29:27,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:27,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194909639] [2022-11-20 09:29:27,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:27,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:27,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 623 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2022-11-20 09:29:27,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:27,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194909639] [2022-11-20 09:29:27,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194909639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:27,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:27,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:27,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44227889] [2022-11-20 09:29:27,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:27,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:27,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:27,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:27,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:29:27,549 INFO L87 Difference]: Start difference. First operand 246068 states and 269435 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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)