./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array23_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array23_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R --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 e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 --- 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-38b53e6 [2022-11-25 16:59:04,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:59:04,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:59:04,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:59:04,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:59:04,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:59:04,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:59:04,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:59:04,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:59:04,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:59:04,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:59:04,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:59:04,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:59:04,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:59:04,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:59:04,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:59:04,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:59:04,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:59:04,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:59:04,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:59:04,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:59:04,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:59:04,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:59:04,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:59:04,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:59:04,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:59:04,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:59:04,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:59:04,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:59:04,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:59:04,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:59:04,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:59:04,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:59:04,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:59:04,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:59:04,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:59:04,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:59:04,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:59:04,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:59:04,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:59:04,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:59:04,475 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 16:59:04,516 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:59:04,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:59:04,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:59:04,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:59:04,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:59:04,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:59:04,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:59:04,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:59:04,519 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:59:04,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:59:04,520 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:59:04,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:59:04,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:59:04,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:59:04,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:59:04,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:59:04,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:59:04,521 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:59:04,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:59:04,521 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:59:04,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:59:04,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:59:04,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:59:04,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:59:04,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:59:04,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:59:04,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:59:04,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:59:04,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:59:04,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:59:04,524 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:59:04,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:59:04,525 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:59:04,525 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:59:04,525 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 [2022-11-25 16:59:04,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:59:04,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:59:04,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:59:04,922 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:59:04,923 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:59:04,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/array-patterns/array23_pattern.c [2022-11-25 16:59:08,009 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:59:08,283 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:59:08,284 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/sv-benchmarks/c/array-patterns/array23_pattern.c [2022-11-25 16:59:08,294 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/data/281670a6e/4da019730cba4b81aeb5f171630b8f64/FLAG37250e925 [2022-11-25 16:59:08,325 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/data/281670a6e/4da019730cba4b81aeb5f171630b8f64 [2022-11-25 16:59:08,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:59:08,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:59:08,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:59:08,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:59:08,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:59:08,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:59:08" (1/1) ... [2022-11-25 16:59:08,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d38247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:08, skipping insertion in model container [2022-11-25 16:59:08,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:59:08" (1/1) ... [2022-11-25 16:59:08,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:59:08,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:59:08,617 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/sv-benchmarks/c/array-patterns/array23_pattern.c[1347,1360] [2022-11-25 16:59:08,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:59:08,677 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:59:08,696 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/sv-benchmarks/c/array-patterns/array23_pattern.c[1347,1360] [2022-11-25 16:59:08,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:59:08,745 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:59:08,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:08 WrapperNode [2022-11-25 16:59:08,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:59:08,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:59:08,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:59:08,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:59:08,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:08" (1/1) ... [2022-11-25 16:59:08,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:08" (1/1) ... [2022-11-25 16:59:08,809 INFO L138 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 108 [2022-11-25 16:59:08,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:59:08,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:59:08,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:59:08,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:59:08,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:08" (1/1) ... [2022-11-25 16:59:08,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:08" (1/1) ... [2022-11-25 16:59:08,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:08" (1/1) ... [2022-11-25 16:59:08,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:08" (1/1) ... [2022-11-25 16:59:08,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:08" (1/1) ... [2022-11-25 16:59:08,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:08" (1/1) ... [2022-11-25 16:59:08,858 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:08" (1/1) ... [2022-11-25 16:59:08,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:08" (1/1) ... [2022-11-25 16:59:08,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:59:08,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:59:08,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:59:08,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:59:08,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:08" (1/1) ... [2022-11-25 16:59:08,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:59:08,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:59:08,917 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:59:08,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:59:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2022-11-25 16:59:08,980 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2022-11-25 16:59:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:59:08,981 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 16:59:08,982 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 16:59:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:59:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:59:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:59:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:59:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:59:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:59:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:59:09,076 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:59:09,078 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:59:09,352 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:59:09,358 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:59:09,359 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-25 16:59:09,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:59:09 BoogieIcfgContainer [2022-11-25 16:59:09,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:59:09,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:59:09,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:59:09,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:59:09,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:59:08" (1/3) ... [2022-11-25 16:59:09,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c56d8ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:59:09, skipping insertion in model container [2022-11-25 16:59:09,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:08" (2/3) ... [2022-11-25 16:59:09,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c56d8ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:59:09, skipping insertion in model container [2022-11-25 16:59:09,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:59:09" (3/3) ... [2022-11-25 16:59:09,371 INFO L112 eAbstractionObserver]: Analyzing ICFG array23_pattern.c [2022-11-25 16:59:09,392 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:59:09,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 16:59:09,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:59:09,494 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;@72a3e8cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:59:09,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 16:59:09,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 16:59:09,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 16:59:09,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:59:09,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:59:09,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:59:09,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:09,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1798908762, now seen corresponding path program 1 times [2022-11-25 16:59:09,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:09,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82683908] [2022-11-25 16:59:09,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:09,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:09,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:09,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82683908] [2022-11-25 16:59:09,695 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 16:59:09,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620793361] [2022-11-25 16:59:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:09,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:59:09,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:59:09,703 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:59:09,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:59:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:09,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 16:59:09,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:59:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:09,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:59:09,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620793361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:09,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:09,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:59:09,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419406521] [2022-11-25 16:59:09,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:09,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:59:09,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:09,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:59:09,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:59:09,919 INFO L87 Difference]: Start difference. First operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 16:59:09,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:59:09,956 INFO L93 Difference]: Finished difference Result 79 states and 117 transitions. [2022-11-25 16:59:09,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 16:59:09,959 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-25 16:59:09,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:59:09,967 INFO L225 Difference]: With dead ends: 79 [2022-11-25 16:59:09,967 INFO L226 Difference]: Without dead ends: 37 [2022-11-25 16:59:09,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:59:09,980 INFO L413 NwaCegarLoop]: 51 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, 51 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 [2022-11-25 16:59:09,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:59:10,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-25 16:59:10,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-25 16:59:10,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 16:59:10,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2022-11-25 16:59:10,028 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 15 [2022-11-25 16:59:10,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:59:10,029 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2022-11-25 16:59:10,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 16:59:10,030 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2022-11-25 16:59:10,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-25 16:59:10,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:59:10,036 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:59:10,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 16:59:10,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 16:59:10,242 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:59:10,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:10,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1909329698, now seen corresponding path program 1 times [2022-11-25 16:59:10,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:10,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403085350] [2022-11-25 16:59:10,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:10,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:10,281 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:59:10,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64769174] [2022-11-25 16:59:10,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:10,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:59:10,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:59:10,284 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:59:10,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 16:59:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:10,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 16:59:10,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:59:10,570 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 16:59:10,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:59:10,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:10,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403085350] [2022-11-25 16:59:10,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:59:10,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64769174] [2022-11-25 16:59:10,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64769174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:10,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:10,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:59:10,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739727473] [2022-11-25 16:59:10,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:10,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:59:10,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:10,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:59:10,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:59:10,576 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 16:59:10,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:59:10,619 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2022-11-25 16:59:10,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:59:10,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-11-25 16:59:10,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:59:10,624 INFO L225 Difference]: With dead ends: 44 [2022-11-25 16:59:10,625 INFO L226 Difference]: Without dead ends: 40 [2022-11-25 16:59:10,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:59:10,627 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 12 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 110 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 [2022-11-25 16:59:10,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 110 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:59:10,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-25 16:59:10,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-25 16:59:10,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 16:59:10,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2022-11-25 16:59:10,649 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 42 [2022-11-25 16:59:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:59:10,651 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2022-11-25 16:59:10,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 16:59:10,651 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2022-11-25 16:59:10,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-25 16:59:10,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:59:10,654 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:59:10,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 16:59:10,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:59:10,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:59:10,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:10,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1786751912, now seen corresponding path program 1 times [2022-11-25 16:59:10,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:10,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397365422] [2022-11-25 16:59:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:10,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:10,877 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:59:10,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798224807] [2022-11-25 16:59:10,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:10,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:59:10,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:59:10,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:59:10,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 16:59:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:11,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 16:59:11,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:59:11,133 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 16:59:11,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:59:11,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:11,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397365422] [2022-11-25 16:59:11,134 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:59:11,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798224807] [2022-11-25 16:59:11,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798224807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:11,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:11,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:59:11,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979992705] [2022-11-25 16:59:11,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:11,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:59:11,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:11,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:59:11,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:59:11,137 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 16:59:11,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:59:11,263 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2022-11-25 16:59:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:59:11,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2022-11-25 16:59:11,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:59:11,264 INFO L225 Difference]: With dead ends: 83 [2022-11-25 16:59:11,264 INFO L226 Difference]: Without dead ends: 50 [2022-11-25 16:59:11,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:59:11,266 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 24 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:59:11,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 114 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:59:11,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-25 16:59:11,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2022-11-25 16:59:11,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 16:59:11,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2022-11-25 16:59:11,276 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 47 [2022-11-25 16:59:11,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:59:11,277 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2022-11-25 16:59:11,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 16:59:11,277 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2022-11-25 16:59:11,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-25 16:59:11,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:59:11,279 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:59:11,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 16:59:11,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:59:11,480 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:59:11,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:11,481 INFO L85 PathProgramCache]: Analyzing trace with hash -2075657686, now seen corresponding path program 1 times [2022-11-25 16:59:11,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:11,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938990756] [2022-11-25 16:59:11,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:11,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:11,500 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:59:11,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676807666] [2022-11-25 16:59:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:11,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:59:11,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:59:11,506 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:59:11,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 16:59:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:11,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 16:59:11,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:59:11,626 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 16:59:11,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:59:11,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:11,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938990756] [2022-11-25 16:59:11,627 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:59:11,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676807666] [2022-11-25 16:59:11,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676807666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:11,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:11,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:59:11,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583735743] [2022-11-25 16:59:11,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:11,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:59:11,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:11,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:59:11,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:59:11,630 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 16:59:11,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:59:11,700 INFO L93 Difference]: Finished difference Result 80 states and 103 transitions. [2022-11-25 16:59:11,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:59:11,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-11-25 16:59:11,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:59:11,702 INFO L225 Difference]: With dead ends: 80 [2022-11-25 16:59:11,702 INFO L226 Difference]: Without dead ends: 44 [2022-11-25 16:59:11,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:59:11,704 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 30 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:59:11,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 77 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:59:11,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-25 16:59:11,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2022-11-25 16:59:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 16:59:11,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-11-25 16:59:11,714 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 50 [2022-11-25 16:59:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:59:11,714 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-11-25 16:59:11,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 16:59:11,715 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-11-25 16:59:11,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 16:59:11,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:59:11,716 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:59:11,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 16:59:11,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:59:11,923 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:59:11,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:11,923 INFO L85 PathProgramCache]: Analyzing trace with hash 874891816, now seen corresponding path program 1 times [2022-11-25 16:59:11,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:11,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864329870] [2022-11-25 16:59:11,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:11,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:11,939 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:59:11,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947447860] [2022-11-25 16:59:11,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:11,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:59:11,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:59:11,954 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:59:11,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 16:59:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:12,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 16:59:12,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:59:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 16:59:12,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:59:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 16:59:12,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:12,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864329870] [2022-11-25 16:59:12,357 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:59:12,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947447860] [2022-11-25 16:59:12,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947447860] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:59:12,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:59:12,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-25 16:59:12,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022108162] [2022-11-25 16:59:12,359 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:59:12,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 16:59:12,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:12,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 16:59:12,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-25 16:59:12,361 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 16:59:12,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:59:12,554 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2022-11-25 16:59:12,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 16:59:12,555 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 52 [2022-11-25 16:59:12,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:59:12,556 INFO L225 Difference]: With dead ends: 87 [2022-11-25 16:59:12,556 INFO L226 Difference]: Without dead ends: 51 [2022-11-25 16:59:12,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:59:12,558 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 54 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:59:12,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 89 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:59:12,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-25 16:59:12,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2022-11-25 16:59:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 16:59:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2022-11-25 16:59:12,567 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 52 [2022-11-25 16:59:12,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:59:12,568 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2022-11-25 16:59:12,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 16:59:12,568 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2022-11-25 16:59:12,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 16:59:12,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:59:12,569 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:59:12,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 16:59:12,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:59:12,776 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:59:12,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:12,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1211966936, now seen corresponding path program 2 times [2022-11-25 16:59:12,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:12,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779730071] [2022-11-25 16:59:12,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:12,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:12,805 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:59:12,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070804013] [2022-11-25 16:59:12,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:59:12,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:59:12,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:59:12,811 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:59:12,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 16:59:12,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:59:12,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:59:12,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:59:12,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:59:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 16:59:13,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:59:13,095 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 16:59:13,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:13,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779730071] [2022-11-25 16:59:13,096 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:59:13,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070804013] [2022-11-25 16:59:13,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070804013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:59:13,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:59:13,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-25 16:59:13,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209443091] [2022-11-25 16:59:13,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:59:13,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 16:59:13,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:13,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 16:59:13,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-25 16:59:13,099 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-25 16:59:13,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:59:13,356 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2022-11-25 16:59:13,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 16:59:13,356 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2022-11-25 16:59:13,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:59:13,359 INFO L225 Difference]: With dead ends: 108 [2022-11-25 16:59:13,360 INFO L226 Difference]: Without dead ends: 75 [2022-11-25 16:59:13,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-25 16:59:13,361 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 51 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 16:59:13,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 186 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 16:59:13,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-25 16:59:13,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2022-11-25 16:59:13,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 16:59:13,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2022-11-25 16:59:13,374 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 56 [2022-11-25 16:59:13,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:59:13,374 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2022-11-25 16:59:13,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-25 16:59:13,374 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2022-11-25 16:59:13,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-25 16:59:13,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:59:13,376 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:59:13,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 16:59:13,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 16:59:13,582 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:59:13,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:13,582 INFO L85 PathProgramCache]: Analyzing trace with hash -511912674, now seen corresponding path program 3 times [2022-11-25 16:59:13,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:13,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863336614] [2022-11-25 16:59:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:13,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:13,598 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:59:13,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488239024] [2022-11-25 16:59:13,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 16:59:13,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:59:13,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:59:13,600 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:59:13,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1b96d9-451f-4729-97c3-8bade42e4590/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 16:59:15,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-25 16:59:15,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:59:15,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-25 16:59:15,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:59:16,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 16:59:16,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2022-11-25 16:59:16,401 INFO L321 Elim1Store]: treesize reduction 66, result has 20.5 percent of original size [2022-11-25 16:59:16,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2022-11-25 16:59:16,576 INFO L321 Elim1Store]: treesize reduction 98, result has 14.8 percent of original size [2022-11-25 16:59:16,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 59 [2022-11-25 16:59:26,258 INFO L321 Elim1Store]: treesize reduction 163, result has 38.5 percent of original size [2022-11-25 16:59:26,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 132 [2022-11-25 16:59:37,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 245 treesize of output 226 [2022-11-25 16:59:49,576 WARN L233 SmtUtils]: Spent 11.88s on a formula simplification. DAG size of input: 245 DAG size of output: 90 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-25 16:59:49,579 INFO L321 Elim1Store]: treesize reduction 968, result has 25.1 percent of original size [2022-11-25 16:59:49,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 225 treesize of output 587 [2022-11-25 17:00:17,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:00:17,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:00:18,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:00:18,002 INFO L190 IndexEqualityManager]: detected not equals via solver