./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8 --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 154556615f003714b5a49b3ebe7e74b2231be519e4b6364e10c3e255a1a8cfe1 --- 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-e04fb08 [2022-11-16 12:17:03,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:17:03,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:17:03,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:17:03,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:17:03,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:17:03,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:17:03,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:17:03,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:17:03,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:17:03,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:17:03,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:17:03,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:17:03,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:17:03,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:17:03,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:17:03,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:17:03,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:17:03,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:17:03,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:17:03,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:17:03,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:17:03,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:17:03,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:17:03,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:17:03,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:17:03,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:17:03,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:17:03,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:17:03,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:17:03,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:17:03,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:17:03,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:17:03,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:17:03,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:17:03,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:17:03,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:17:03,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:17:03,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:17:03,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:17:03,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:17:03,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:17:03,506 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:17:03,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:17:03,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:17:03,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:17:03,508 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:17:03,508 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:17:03,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:17:03,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:17:03,509 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:17:03,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:17:03,511 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:17:03,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:17:03,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:17:03,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:17:03,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:17:03,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:17:03,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:17:03,512 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:17:03,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:17:03,513 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:17:03,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:17:03,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:17:03,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:17:03,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:17:03,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:17:03,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:17:03,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:17:03,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:17:03,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:17:03,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:17:03,517 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:17:03,517 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:17:03,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:17:03,517 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_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 154556615f003714b5a49b3ebe7e74b2231be519e4b6364e10c3e255a1a8cfe1 [2022-11-16 12:17:03,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:17:03,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:17:03,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:17:03,887 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:17:03,888 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:17:03,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound10.c [2022-11-16 12:17:03,977 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/data/3db0de881/f06eb4015773462998d0a92fd7ebdaea/FLAG8ff1d51fd [2022-11-16 12:17:04,570 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:17:04,571 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound10.c [2022-11-16 12:17:04,582 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/data/3db0de881/f06eb4015773462998d0a92fd7ebdaea/FLAG8ff1d51fd [2022-11-16 12:17:04,924 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/data/3db0de881/f06eb4015773462998d0a92fd7ebdaea [2022-11-16 12:17:04,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:17:04,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:17:04,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:17:04,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:17:04,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:17:04,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:17:04" (1/1) ... [2022-11-16 12:17:04,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d9dbf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:04, skipping insertion in model container [2022-11-16 12:17:04,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:17:04" (1/1) ... [2022-11-16 12:17:04,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:17:04,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:17:05,194 WARN L229 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_17da99d8-16fd-447f-93ac-0b8b92a28c87/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound10.c[524,537] [2022-11-16 12:17:05,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:17:05,228 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:17:05,243 WARN L229 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_17da99d8-16fd-447f-93ac-0b8b92a28c87/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound10.c[524,537] [2022-11-16 12:17:05,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:17:05,270 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:17:05,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:05 WrapperNode [2022-11-16 12:17:05,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:17:05,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:17:05,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:17:05,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:17:05,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:05" (1/1) ... [2022-11-16 12:17:05,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:05" (1/1) ... [2022-11-16 12:17:05,313 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2022-11-16 12:17:05,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:17:05,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:17:05,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:17:05,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:17:05,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:05" (1/1) ... [2022-11-16 12:17:05,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:05" (1/1) ... [2022-11-16 12:17:05,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:05" (1/1) ... [2022-11-16 12:17:05,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:05" (1/1) ... [2022-11-16 12:17:05,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:05" (1/1) ... [2022-11-16 12:17:05,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:05" (1/1) ... [2022-11-16 12:17:05,339 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:05" (1/1) ... [2022-11-16 12:17:05,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:05" (1/1) ... [2022-11-16 12:17:05,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:17:05,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:17:05,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:17:05,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:17:05,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:05" (1/1) ... [2022-11-16 12:17:05,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:17:05,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:05,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:17:05,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:17:05,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:17:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:17:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:17:05,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:17:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:17:05,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:17:05,547 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:17:05,550 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:17:05,836 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:17:05,843 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:17:05,844 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:17:05,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:17:05 BoogieIcfgContainer [2022-11-16 12:17:05,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:17:05,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:17:05,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:17:05,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:17:05,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:17:04" (1/3) ... [2022-11-16 12:17:05,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e371025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:17:05, skipping insertion in model container [2022-11-16 12:17:05,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:05" (2/3) ... [2022-11-16 12:17:05,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e371025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:17:05, skipping insertion in model container [2022-11-16 12:17:05,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:17:05" (3/3) ... [2022-11-16 12:17:05,859 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound10.c [2022-11-16 12:17:05,912 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:17:05,912 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:17:05,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:17:06,014 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;@47da0ceb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:17:06,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:17:06,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:17:06,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:17:06,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:06,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:06,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:06,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:06,043 INFO L85 PathProgramCache]: Analyzing trace with hash -563977895, now seen corresponding path program 1 times [2022-11-16 12:17:06,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:06,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569897342] [2022-11-16 12:17:06,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:06,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:06,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:06,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569897342] [2022-11-16 12:17:06,244 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 12:17:06,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66824752] [2022-11-16 12:17:06,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:06,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:06,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:06,254 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:06,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:17:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:06,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 12:17:06,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:06,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:17:06,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66824752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:06,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:06,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:17:06,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31734261] [2022-11-16 12:17:06,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:06,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:17:06,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:06,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:17:06,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:17:06,464 INFO L87 Difference]: Start difference. First operand has 23 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:06,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:06,508 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2022-11-16 12:17:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:17:06,523 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 12:17:06,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:06,533 INFO L225 Difference]: With dead ends: 43 [2022-11-16 12:17:06,533 INFO L226 Difference]: Without dead ends: 19 [2022-11-16 12:17:06,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:17:06,543 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:06,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:17:06,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-16 12:17:06,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-16 12:17:06,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:17:06,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2022-11-16 12:17:06,599 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 9 [2022-11-16 12:17:06,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:06,599 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-11-16 12:17:06,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:06,601 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2022-11-16 12:17:06,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:17:06,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:06,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:06,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:06,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:06,810 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:06,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:06,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1986058659, now seen corresponding path program 1 times [2022-11-16 12:17:06,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:06,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206867722] [2022-11-16 12:17:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:06,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:06,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:06,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206867722] [2022-11-16 12:17:06,859 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 12:17:06,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683821368] [2022-11-16 12:17:06,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:06,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:06,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:06,869 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:06,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:17:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:06,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:17:06,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:07,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:07,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:17:07,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683821368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:07,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:07,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:17:07,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362934202] [2022-11-16 12:17:07,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:07,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:17:07,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:07,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:17:07,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:17:07,033 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:07,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:07,063 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2022-11-16 12:17:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:17:07,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 12:17:07,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:07,065 INFO L225 Difference]: With dead ends: 29 [2022-11-16 12:17:07,065 INFO L226 Difference]: Without dead ends: 21 [2022-11-16 12:17:07,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:17:07,068 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:07,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:17:07,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-16 12:17:07,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-16 12:17:07,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:17:07,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2022-11-16 12:17:07,077 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 10 [2022-11-16 12:17:07,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:07,077 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2022-11-16 12:17:07,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:07,078 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-11-16 12:17:07,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:17:07,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:07,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:07,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:07,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:07,286 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:07,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:07,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1984271199, now seen corresponding path program 1 times [2022-11-16 12:17:07,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:07,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467845520] [2022-11-16 12:17:07,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:07,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:07,303 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:17:07,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [203967728] [2022-11-16 12:17:07,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:07,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:07,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:07,306 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:07,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:17:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:07,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 12:17:07,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:07,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:17:07,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:07,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467845520] [2022-11-16 12:17:07,558 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:17:07,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203967728] [2022-11-16 12:17:07,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203967728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:07,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:07,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:17:07,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127014387] [2022-11-16 12:17:07,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:07,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:17:07,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:07,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:17:07,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:17:07,562 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:07,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:07,757 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2022-11-16 12:17:07,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:17:07,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 12:17:07,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:07,760 INFO L225 Difference]: With dead ends: 34 [2022-11-16 12:17:07,760 INFO L226 Difference]: Without dead ends: 32 [2022-11-16 12:17:07,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:17:07,762 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 50 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:07,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 51 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:17:07,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-16 12:17:07,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2022-11-16 12:17:07,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 21 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:17:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-11-16 12:17:07,774 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 10 [2022-11-16 12:17:07,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:07,775 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-11-16 12:17:07,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:07,776 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-11-16 12:17:07,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:17:07,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:07,777 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:07,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 12:17:07,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:07,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:07,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:07,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1194524114, now seen corresponding path program 1 times [2022-11-16 12:17:07,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:07,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319953771] [2022-11-16 12:17:07,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:07,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:08,005 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:17:08,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [256939720] [2022-11-16 12:17:08,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:08,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:08,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:08,014 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:08,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:17:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:08,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:17:08,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:08,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:08,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:17:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:08,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:08,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319953771] [2022-11-16 12:17:08,909 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:17:08,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256939720] [2022-11-16 12:17:08,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256939720] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:17:08,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:17:08,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2022-11-16 12:17:08,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171443104] [2022-11-16 12:17:08,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:17:08,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:17:08,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:08,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:17:08,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:17:08,917 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:17:09,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:09,626 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2022-11-16 12:17:09,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:17:09,627 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-16 12:17:09,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:09,630 INFO L225 Difference]: With dead ends: 47 [2022-11-16 12:17:09,631 INFO L226 Difference]: Without dead ends: 45 [2022-11-16 12:17:09,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:17:09,632 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 87 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:09,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 71 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:17:09,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-16 12:17:09,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2022-11-16 12:17:09,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:17:09,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2022-11-16 12:17:09,649 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 16 [2022-11-16 12:17:09,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:09,652 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-11-16 12:17:09,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:17:09,653 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2022-11-16 12:17:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 12:17:09,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:09,654 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:09,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:09,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:09,860 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:09,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:09,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1756733383, now seen corresponding path program 1 times [2022-11-16 12:17:09,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:09,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843748953] [2022-11-16 12:17:09,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:09,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:09,875 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:17:09,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319151210] [2022-11-16 12:17:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:09,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:09,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:09,877 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:09,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:17:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:09,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:17:09,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:09,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:17:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:10,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:10,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843748953] [2022-11-16 12:17:10,057 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:17:10,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319151210] [2022-11-16 12:17:10,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319151210] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:17:10,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:17:10,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-11-16 12:17:10,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429953105] [2022-11-16 12:17:10,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:17:10,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:17:10,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:10,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:17:10,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:17:10,061 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:17:10,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:10,206 INFO L93 Difference]: Finished difference Result 95 states and 115 transitions. [2022-11-16 12:17:10,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:17:10,207 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-11-16 12:17:10,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:10,212 INFO L225 Difference]: With dead ends: 95 [2022-11-16 12:17:10,213 INFO L226 Difference]: Without dead ends: 85 [2022-11-16 12:17:10,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:17:10,217 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 83 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:10,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 120 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:17:10,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-16 12:17:10,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2022-11-16 12:17:10,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 61 states have internal predecessors, (77), 13 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 12:17:10,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2022-11-16 12:17:10,262 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 19 [2022-11-16 12:17:10,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:10,262 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2022-11-16 12:17:10,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:17:10,263 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2022-11-16 12:17:10,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 12:17:10,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:10,266 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:10,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:10,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:10,479 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:10,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1754945923, now seen corresponding path program 1 times [2022-11-16 12:17:10,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:10,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858500774] [2022-11-16 12:17:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:10,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:10,497 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:17:10,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119420839] [2022-11-16 12:17:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:10,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:10,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:10,512 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:10,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:17:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:10,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-16 12:17:10,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:11,001 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:11,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:17:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:12,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:12,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858500774] [2022-11-16 12:17:12,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:17:12,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119420839] [2022-11-16 12:17:12,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119420839] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:17:12,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:17:12,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-16 12:17:12,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457189902] [2022-11-16 12:17:12,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:17:12,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:17:12,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:12,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:17:12,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:17:12,980 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:17:16,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:16,380 INFO L93 Difference]: Finished difference Result 119 states and 156 transitions. [2022-11-16 12:17:16,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:17:16,382 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-11-16 12:17:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:16,385 INFO L225 Difference]: With dead ends: 119 [2022-11-16 12:17:16,386 INFO L226 Difference]: Without dead ends: 113 [2022-11-16 12:17:16,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:17:16,389 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 139 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:16,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 89 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 12:17:16,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-16 12:17:16,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 71. [2022-11-16 12:17:16,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 56 states have internal predecessors, (72), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 12:17:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2022-11-16 12:17:16,428 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 19 [2022-11-16 12:17:16,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:16,429 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2022-11-16 12:17:16,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:17:16,429 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2022-11-16 12:17:16,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 12:17:16,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:16,432 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:16,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:16,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:16,641 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:16,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:16,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1942139802, now seen corresponding path program 1 times [2022-11-16 12:17:16,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:16,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202621692] [2022-11-16 12:17:16,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:16,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:16,680 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:17:16,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1671105452] [2022-11-16 12:17:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:16,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:16,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:16,691 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:16,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:17:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:16,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:17:16,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:16,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:17:16,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:17:16,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:16,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202621692] [2022-11-16 12:17:16,895 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:17:16,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671105452] [2022-11-16 12:17:16,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671105452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:16,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:16,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:17:16,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910096273] [2022-11-16 12:17:16,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:16,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:17:16,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:16,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:17:16,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:17:16,898 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:17:17,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:17,148 INFO L93 Difference]: Finished difference Result 108 states and 143 transitions. [2022-11-16 12:17:17,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:17:17,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-11-16 12:17:17,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:17,150 INFO L225 Difference]: With dead ends: 108 [2022-11-16 12:17:17,151 INFO L226 Difference]: Without dead ends: 96 [2022-11-16 12:17:17,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:17:17,152 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 58 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:17,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 74 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:17:17,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-16 12:17:17,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2022-11-16 12:17:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 73 states have internal predecessors, (95), 12 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 12:17:17,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 117 transitions. [2022-11-16 12:17:17,188 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 117 transitions. Word has length 21 [2022-11-16 12:17:17,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:17,188 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 117 transitions. [2022-11-16 12:17:17,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:17:17,189 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 117 transitions. [2022-11-16 12:17:17,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 12:17:17,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:17,190 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:17,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:17,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:17:17,396 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:17,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:17,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1954557947, now seen corresponding path program 1 times [2022-11-16 12:17:17,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:17,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141078962] [2022-11-16 12:17:17,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:17,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:17,410 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:17:17,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255431964] [2022-11-16 12:17:17,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:17,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:17,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:17,413 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:17,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:17:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:17,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:17:17,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:17:17,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:17:17,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:17,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141078962] [2022-11-16 12:17:17,619 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:17:17,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255431964] [2022-11-16 12:17:17,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255431964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:17,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:17,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:17:17,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486259647] [2022-11-16 12:17:17,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:17,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:17:17,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:17,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:17:17,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:17:17,623 INFO L87 Difference]: Start difference. First operand 91 states and 117 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:17:18,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:18,063 INFO L93 Difference]: Finished difference Result 217 states and 293 transitions. [2022-11-16 12:17:18,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:17:18,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-11-16 12:17:18,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:18,067 INFO L225 Difference]: With dead ends: 217 [2022-11-16 12:17:18,067 INFO L226 Difference]: Without dead ends: 162 [2022-11-16 12:17:18,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:17:18,069 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 22 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:18,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 170 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:17:18,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-16 12:17:18,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 126. [2022-11-16 12:17:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 101 states have (on average 1.3366336633663367) internal successors, (135), 103 states have internal predecessors, (135), 17 states have call successors, (17), 8 states have call predecessors, (17), 7 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 12:17:18,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 167 transitions. [2022-11-16 12:17:18,153 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 167 transitions. Word has length 32 [2022-11-16 12:17:18,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:18,154 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 167 transitions. [2022-11-16 12:17:18,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:17:18,154 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 167 transitions. [2022-11-16 12:17:18,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 12:17:18,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:18,162 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:18,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:18,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:18,370 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:18,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:18,371 INFO L85 PathProgramCache]: Analyzing trace with hash 346264643, now seen corresponding path program 1 times [2022-11-16 12:17:18,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:18,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356079458] [2022-11-16 12:17:18,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:18,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:18,400 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:17:18,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723635320] [2022-11-16 12:17:18,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:18,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:18,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:18,410 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:18,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:17:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:18,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:17:18,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:18,701 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:17:18,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:17:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 12:17:18,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:18,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356079458] [2022-11-16 12:17:18,797 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:17:18,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723635320] [2022-11-16 12:17:18,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723635320] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:17:18,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:17:18,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2022-11-16 12:17:18,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627647386] [2022-11-16 12:17:18,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:18,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:17:18,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:18,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:17:18,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:17:18,804 INFO L87 Difference]: Start difference. First operand 126 states and 167 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:17:19,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:19,119 INFO L93 Difference]: Finished difference Result 133 states and 173 transitions. [2022-11-16 12:17:19,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:17:19,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-11-16 12:17:19,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:19,121 INFO L225 Difference]: With dead ends: 133 [2022-11-16 12:17:19,121 INFO L226 Difference]: Without dead ends: 113 [2022-11-16 12:17:19,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:17:19,123 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:19,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 89 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:17:19,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-16 12:17:19,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 93. [2022-11-16 12:17:19,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 76 states have (on average 1.2894736842105263) internal successors, (98), 77 states have internal predecessors, (98), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 12:17:19,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2022-11-16 12:17:19,157 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 32 [2022-11-16 12:17:19,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:19,158 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2022-11-16 12:17:19,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:17:19,158 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2022-11-16 12:17:19,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 12:17:19,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:19,160 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:19,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:19,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 12:17:19,367 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:19,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:19,367 INFO L85 PathProgramCache]: Analyzing trace with hash 136508765, now seen corresponding path program 2 times [2022-11-16 12:17:19,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:19,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285221263] [2022-11-16 12:17:19,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:19,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:19,381 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:17:19,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527591497] [2022-11-16 12:17:19,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:17:19,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:19,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:19,383 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:19,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:17:19,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:17:19,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:17:19,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:17:19,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:19,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:17:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:17:19,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:19,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285221263] [2022-11-16 12:17:19,769 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:17:19,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527591497] [2022-11-16 12:17:19,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527591497] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:17:19,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:17:19,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-11-16 12:17:19,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502163677] [2022-11-16 12:17:19,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:17:19,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:17:19,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:19,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:17:19,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:17:19,772 INFO L87 Difference]: Start difference. First operand 93 states and 119 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:17:20,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:20,058 INFO L93 Difference]: Finished difference Result 239 states and 325 transitions. [2022-11-16 12:17:20,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:17:20,059 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 46 [2022-11-16 12:17:20,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:20,061 INFO L225 Difference]: With dead ends: 239 [2022-11-16 12:17:20,061 INFO L226 Difference]: Without dead ends: 231 [2022-11-16 12:17:20,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:17:20,063 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 145 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:20,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 189 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:17:20,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-16 12:17:20,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-11-16 12:17:20,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 190 states have (on average 1.2736842105263158) internal successors, (242), 191 states have internal predecessors, (242), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-16 12:17:20,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 299 transitions. [2022-11-16 12:17:20,163 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 299 transitions. Word has length 46 [2022-11-16 12:17:20,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:20,164 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 299 transitions. [2022-11-16 12:17:20,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:17:20,164 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 299 transitions. [2022-11-16 12:17:20,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-16 12:17:20,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:20,167 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:20,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:20,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:17:20,374 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:20,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:20,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1689445411, now seen corresponding path program 3 times [2022-11-16 12:17:20,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:20,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48930861] [2022-11-16 12:17:20,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:20,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:20,392 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:17:20,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702674137] [2022-11-16 12:17:20,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:17:20,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:20,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:20,395 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:20,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:17:20,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-16 12:17:20,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-16 12:17:20,963 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:17:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:17:21,093 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:17:21,094 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:17:21,095 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 12:17:21,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:21,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 12:17:21,309 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:21,313 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:17:21,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:17:21 BoogieIcfgContainer [2022-11-16 12:17:21,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:17:21,424 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:17:21,424 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:17:21,424 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:17:21,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:17:05" (3/4) ... [2022-11-16 12:17:21,427 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 12:17:21,538 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:17:21,538 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:17:21,539 INFO L158 Benchmark]: Toolchain (without parser) took 16610.17ms. Allocated memory was 121.6MB in the beginning and 151.0MB in the end (delta: 29.4MB). Free memory was 83.0MB in the beginning and 76.7MB in the end (delta: 6.4MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2022-11-16 12:17:21,540 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 99.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:17:21,540 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.05ms. Allocated memory is still 121.6MB. Free memory was 82.9MB in the beginning and 96.7MB in the end (delta: -13.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:17:21,540 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.37ms. Allocated memory is still 121.6MB. Free memory was 96.7MB in the beginning and 95.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:17:21,541 INFO L158 Benchmark]: Boogie Preprocessor took 27.27ms. Allocated memory is still 121.6MB. Free memory was 95.1MB in the beginning and 94.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:17:21,541 INFO L158 Benchmark]: RCFGBuilder took 503.57ms. Allocated memory is still 121.6MB. Free memory was 94.0MB in the beginning and 82.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:17:21,542 INFO L158 Benchmark]: TraceAbstraction took 15574.32ms. Allocated memory was 121.6MB in the beginning and 151.0MB in the end (delta: 29.4MB). Free memory was 80.9MB in the beginning and 81.9MB in the end (delta: -990.3kB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. [2022-11-16 12:17:21,543 INFO L158 Benchmark]: Witness Printer took 114.67ms. Allocated memory is still 151.0MB. Free memory was 81.9MB in the beginning and 76.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:17:21,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 99.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.05ms. Allocated memory is still 121.6MB. Free memory was 82.9MB in the beginning and 96.7MB in the end (delta: -13.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.37ms. Allocated memory is still 121.6MB. Free memory was 96.7MB in the beginning and 95.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.27ms. Allocated memory is still 121.6MB. Free memory was 95.1MB in the beginning and 94.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 503.57ms. Allocated memory is still 121.6MB. Free memory was 94.0MB in the beginning and 82.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15574.32ms. Allocated memory was 121.6MB in the beginning and 151.0MB in the end (delta: 29.4MB). Free memory was 80.9MB in the beginning and 81.9MB in the end (delta: -990.3kB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. * Witness Printer took 114.67ms. Allocated memory is still 151.0MB. Free memory was 81.9MB in the beginning and 76.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [counter=0] [L21] int x, y; [L22] long long a, b, p, q; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(y >= 1) [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L26] RET assume_abort_if_not(y >= 1) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 VAL [a=1024, b=1024, counter=0, p=1, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=1024, b=1024, counter=1, counter++=0, p=1, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=1024, b=1024, counter=1, p=1, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=1024, b=1024, counter=1, p=1, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=512, b=512, counter=1, p=4, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=512, b=512, counter=2, counter++=1, p=4, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=2] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=512, b=512, counter=2, p=4, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=512, b=512, counter=2, p=4, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=256, b=256, counter=2, p=16, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=256, b=256, counter=3, counter++=2, p=16, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=3] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=256, b=256, counter=3, p=16, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=256, b=256, counter=3, p=16, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=128, b=128, counter=3, p=64, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=128, b=128, counter=4, counter++=3, p=64, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=4] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=128, b=128, counter=4, p=64, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=128, b=128, counter=4, p=64, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=64, b=64, counter=4, p=256, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=64, b=64, counter=5, counter++=4, p=256, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=64, b=64, counter=5, p=256, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=64, b=64, counter=5, p=256, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=32, b=32, counter=5, p=1024, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=32, b=32, counter=6, counter++=5, p=1024, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=6] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=32, b=32, counter=6, p=1024, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=32, b=32, counter=6, p=1024, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=16, b=16, counter=6, p=4096, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=16, b=16, counter=7, counter++=6, p=4096, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=7] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=16, b=16, counter=7, p=4096, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=16, b=16, counter=7, p=4096, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=8, b=8, counter=7, p=16384, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=8, b=8, counter=8, counter++=7, p=16384, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=8] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=8, b=8, counter=8, p=16384, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=8, b=8, counter=8, p=16384, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=4, b=4, counter=8, p=65536, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=4, b=4, counter=9, counter++=8, p=65536, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=9] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=4, b=4, counter=9, p=65536, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=4, b=4, counter=9, p=65536, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=2, b=2, counter=9, p=262144, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=2, b=2, counter=10, counter++=9, p=262144, q=0, x=1024, y=1024] [L33] COND TRUE counter++<10 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=10] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=2, b=2, counter=10, p=262144, q=0, x=1024, y=1024] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=2, b=2, counter=10, p=262144, q=0, x=1024, y=1024] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=1, b=1, counter=10, p=1048576, q=0, x=1024, y=1024] [L33] EXPR counter++ VAL [a=1, b=1, counter=11, counter++=10, p=1048576, q=0, x=1024, y=1024] [L33] COND FALSE !(counter++<10) [L56] CALL __VERIFIER_assert(q == (long long) x * y) VAL [\old(cond)=0, counter=11] [L12] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=11] [L14] reach_error() VAL [\old(cond)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.3s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 593 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 588 mSDsluCounter, 945 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 697 mSDsCounter, 167 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 890 IncrementalHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 167 mSolverCounterUnsat, 248 mSDtfsCounter, 890 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 372 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231occurred in iteration=10, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 129 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 333 NumberOfCodeBlocks, 333 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 331 ConstructedInterpolants, 0 QuantifiedInterpolants, 1486 SizeOfPredicates, 39 NumberOfNonLiveVariables, 850 ConjunctsInSsa, 137 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 111/236 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-16 12:17:21,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17da99d8-16fd-447f-93ac-0b8b92a28c87/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE