./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8 --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 b8fdffcd3d5c4257bd11c08a4d1194cf24a2807af8b572699be11b4eeff19c02 --- 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-2329fc7 [2022-12-13 19:44:52,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:44:52,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:44:52,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:44:52,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:44:52,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:44:52,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:44:52,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:44:52,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:44:52,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:44:52,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:44:52,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:44:52,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:44:52,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:44:52,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:44:52,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:44:52,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:44:52,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:44:52,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:44:52,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:44:52,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:44:52,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:44:52,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:44:52,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:44:52,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:44:52,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:44:52,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:44:52,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:44:52,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:44:52,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:44:52,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:44:52,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:44:52,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:44:52,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:44:52,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:44:52,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:44:52,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:44:52,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:44:52,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:44:52,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:44:52,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:44:52,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 19:44:52,470 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:44:52,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:44:52,470 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:44:52,470 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:44:52,471 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:44:52,471 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:44:52,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:44:52,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:44:52,472 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:44:52,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:44:52,473 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:44:52,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:44:52,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:44:52,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:44:52,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:44:52,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:44:52,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:44:52,474 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:44:52,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:44:52,474 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:44:52,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:44:52,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:44:52,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:44:52,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:44:52,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:44:52,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:44:52,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:44:52,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:44:52,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:44:52,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:44:52,476 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:44:52,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:44:52,476 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:44:52,476 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:44:52,476 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:44:52,476 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_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8fdffcd3d5c4257bd11c08a4d1194cf24a2807af8b572699be11b4eeff19c02 [2022-12-13 19:44:52,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:44:52,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:44:52,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:44:52,699 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:44:52,699 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:44:52,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c [2022-12-13 19:44:55,289 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:44:55,439 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:44:55,439 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c [2022-12-13 19:44:55,443 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/data/c40358c53/8a3a2602f6d04a7b96d4f9f0d03f782e/FLAGc39ff747c [2022-12-13 19:44:55,847 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/data/c40358c53/8a3a2602f6d04a7b96d4f9f0d03f782e [2022-12-13 19:44:55,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:44:55,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:44:55,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:44:55,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:44:55,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:44:55,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:44:55" (1/1) ... [2022-12-13 19:44:55,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ba9a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:55, skipping insertion in model container [2022-12-13 19:44:55,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:44:55" (1/1) ... [2022-12-13 19:44:55,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:44:55,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:44:55,961 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_0049342c-3608-44f1-bf30-858ca25c1c58/sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c[416,429] [2022-12-13 19:44:55,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:44:55,977 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:44:55,985 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_0049342c-3608-44f1-bf30-858ca25c1c58/sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c[416,429] [2022-12-13 19:44:55,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:44:55,998 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:44:55,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:55 WrapperNode [2022-12-13 19:44:55,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:44:55,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:44:55,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:44:55,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:44:56,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:55" (1/1) ... [2022-12-13 19:44:56,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:55" (1/1) ... [2022-12-13 19:44:56,021 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2022-12-13 19:44:56,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:44:56,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:44:56,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:44:56,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:44:56,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:55" (1/1) ... [2022-12-13 19:44:56,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:55" (1/1) ... [2022-12-13 19:44:56,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:55" (1/1) ... [2022-12-13 19:44:56,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:55" (1/1) ... [2022-12-13 19:44:56,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:55" (1/1) ... [2022-12-13 19:44:56,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:55" (1/1) ... [2022-12-13 19:44:56,038 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:55" (1/1) ... [2022-12-13 19:44:56,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:55" (1/1) ... [2022-12-13 19:44:56,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:44:56,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:44:56,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:44:56,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:44:56,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:55" (1/1) ... [2022-12-13 19:44:56,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:44:56,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:44:56,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:44:56,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:44:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:44:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:44:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:44:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:44:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:44:56,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:44:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:44:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:44:56,160 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:44:56,161 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:44:56,252 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:44:56,256 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:44:56,256 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 19:44:56,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:44:56 BoogieIcfgContainer [2022-12-13 19:44:56,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:44:56,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:44:56,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:44:56,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:44:56,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:44:55" (1/3) ... [2022-12-13 19:44:56,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd4b1d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:44:56, skipping insertion in model container [2022-12-13 19:44:56,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:55" (2/3) ... [2022-12-13 19:44:56,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd4b1d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:44:56, skipping insertion in model container [2022-12-13 19:44:56,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:44:56" (3/3) ... [2022-12-13 19:44:56,266 INFO L112 eAbstractionObserver]: Analyzing ICFG array_init_pair_sum_const.c [2022-12-13 19:44:56,284 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:44:56,284 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 19:44:56,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:44:56,335 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;@d6c4f3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:44:56,336 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 19:44:56,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:44:56,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 19:44:56,345 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:44:56,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:44:56,346 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:44:56,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:44:56,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2016449835, now seen corresponding path program 1 times [2022-12-13 19:44:56,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:44:56,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174161723] [2022-12-13 19:44:56,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:56,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:44:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:44:56,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:44:56,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174161723] [2022-12-13 19:44:56,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174161723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:44:56,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:44:56,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:44:56,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393425928] [2022-12-13 19:44:56,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:44:56,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:44:56,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:44:56,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:44:56,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:44:56,567 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:44:56,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:44:56,610 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2022-12-13 19:44:56,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:44:56,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-13 19:44:56,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:44:56,619 INFO L225 Difference]: With dead ends: 34 [2022-12-13 19:44:56,625 INFO L226 Difference]: Without dead ends: 16 [2022-12-13 19:44:56,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:44:56,629 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:44:56,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 26 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:44:56,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-13 19:44:56,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2022-12-13 19:44:56,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:44:56,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-13 19:44:56,653 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2022-12-13 19:44:56,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:44:56,653 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-13 19:44:56,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:44:56,653 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-13 19:44:56,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 19:44:56,654 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:44:56,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:44:56,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:44:56,654 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:44:56,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:44:56,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1564645395, now seen corresponding path program 1 times [2022-12-13 19:44:56,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:44:56,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117554759] [2022-12-13 19:44:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:56,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:44:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:44:56,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:44:56,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117554759] [2022-12-13 19:44:56,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117554759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:44:56,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:44:56,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:44:56,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398325118] [2022-12-13 19:44:56,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:44:56,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:44:56,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:44:56,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:44:56,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:44:56,740 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:44:56,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:44:56,769 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-12-13 19:44:56,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:44:56,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 19:44:56,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:44:56,770 INFO L225 Difference]: With dead ends: 25 [2022-12-13 19:44:56,770 INFO L226 Difference]: Without dead ends: 18 [2022-12-13 19:44:56,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:44:56,773 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:44:56,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 15 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:44:56,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-13 19:44:56,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2022-12-13 19:44:56,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:44:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-12-13 19:44:56,779 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2022-12-13 19:44:56,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:44:56,779 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-12-13 19:44:56,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:44:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-12-13 19:44:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 19:44:56,780 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:44:56,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:44:56,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:44:56,781 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:44:56,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:44:56,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2031054225, now seen corresponding path program 1 times [2022-12-13 19:44:56,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:44:56,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619886807] [2022-12-13 19:44:56,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:56,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:44:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:44:56,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:44:56,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619886807] [2022-12-13 19:44:56,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619886807] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:44:56,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608043371] [2022-12-13 19:44:56,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:56,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:44:56,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:44:56,899 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:44:56,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:44:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:56,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:44:56,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:44:57,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:44:57,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:44:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:44:57,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608043371] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:44:57,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:44:57,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-12-13 19:44:57,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125406952] [2022-12-13 19:44:57,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:44:57,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:44:57,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:44:57,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:44:57,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:44:57,041 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:44:57,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:44:57,074 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-12-13 19:44:57,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:44:57,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-13 19:44:57,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:44:57,075 INFO L225 Difference]: With dead ends: 33 [2022-12-13 19:44:57,075 INFO L226 Difference]: Without dead ends: 22 [2022-12-13 19:44:57,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:44:57,077 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:44:57,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 18 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:44:57,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-13 19:44:57,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-13 19:44:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:44:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-12-13 19:44:57,081 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2022-12-13 19:44:57,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:44:57,081 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-12-13 19:44:57,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:44:57,082 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-12-13 19:44:57,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 19:44:57,082 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:44:57,082 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:44:57,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:44:57,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:44:57,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:44:57,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:44:57,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2021040587, now seen corresponding path program 2 times [2022-12-13 19:44:57,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:44:57,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656113433] [2022-12-13 19:44:57,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:57,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:44:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:57,511 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:44:57,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:44:57,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656113433] [2022-12-13 19:44:57,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656113433] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:44:57,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609936656] [2022-12-13 19:44:57,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:44:57,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:44:57,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:44:57,513 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:44:57,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:44:57,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:44:57,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:44:57,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:44:57,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:44:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:44:57,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:44:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:44:57,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609936656] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:44:57,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:44:57,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 19:44:57,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586004453] [2022-12-13 19:44:57,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:44:57,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 19:44:57,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:44:57,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 19:44:57,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:44:57,736 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:44:57,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:44:57,792 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2022-12-13 19:44:57,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:44:57,793 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-13 19:44:57,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:44:57,793 INFO L225 Difference]: With dead ends: 45 [2022-12-13 19:44:57,793 INFO L226 Difference]: Without dead ends: 34 [2022-12-13 19:44:57,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:44:57,795 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:44:57,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:44:57,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-13 19:44:57,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-12-13 19:44:57,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:44:57,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2022-12-13 19:44:57,801 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 19 [2022-12-13 19:44:57,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:44:57,801 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2022-12-13 19:44:57,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:44:57,802 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-12-13 19:44:57,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-13 19:44:57,802 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:44:57,802 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:44:57,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 19:44:58,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:44:58,004 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:44:58,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:44:58,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1833373761, now seen corresponding path program 3 times [2022-12-13 19:44:58,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:44:58,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119662669] [2022-12-13 19:44:58,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:58,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:44:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:58,332 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:44:58,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:44:58,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119662669] [2022-12-13 19:44:58,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119662669] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:44:58,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642761448] [2022-12-13 19:44:58,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:44:58,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:44:58,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:44:58,334 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:44:58,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:44:58,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 19:44:58,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:44:58,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:44:58,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:44:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-12-13 19:44:58,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:44:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-12-13 19:44:58,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642761448] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:44:58,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:44:58,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2022-12-13 19:44:58,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72922102] [2022-12-13 19:44:58,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:44:58,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 19:44:58,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:44:58,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 19:44:58,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2022-12-13 19:44:58,514 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:44:58,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:44:58,747 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2022-12-13 19:44:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 19:44:58,748 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-12-13 19:44:58,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:44:58,749 INFO L225 Difference]: With dead ends: 142 [2022-12-13 19:44:58,749 INFO L226 Difference]: Without dead ends: 131 [2022-12-13 19:44:58,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=345, Invalid=525, Unknown=0, NotChecked=0, Total=870 [2022-12-13 19:44:58,750 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 321 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:44:58,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 66 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:44:58,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-12-13 19:44:58,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 64. [2022-12-13 19:44:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:44:58,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2022-12-13 19:44:58,761 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 31 [2022-12-13 19:44:58,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:44:58,762 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2022-12-13 19:44:58,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:44:58,762 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2022-12-13 19:44:58,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 19:44:58,763 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:44:58,763 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:44:58,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 19:44:58,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:44:58,965 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:44:58,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:44:58,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1380005279, now seen corresponding path program 4 times [2022-12-13 19:44:58,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:44:58,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110603219] [2022-12-13 19:44:58,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:58,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:44:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-12-13 19:44:59,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:44:59,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110603219] [2022-12-13 19:44:59,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110603219] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:44:59,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167037805] [2022-12-13 19:44:59,425 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 19:44:59,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:44:59,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:44:59,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:44:59,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:45:00,459 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 19:45:00,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:45:00,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 19:45:00,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-12-13 19:45:00,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:45:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-12-13 19:45:01,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167037805] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:45:01,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:45:01,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 46 [2022-12-13 19:45:01,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090997387] [2022-12-13 19:45:01,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:45:01,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-13 19:45:01,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:01,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-13 19:45:01,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=1167, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 19:45:01,018 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 46 states, 46 states have (on average 2.1956521739130435) internal successors, (101), 46 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:45:01,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:01,662 INFO L93 Difference]: Finished difference Result 316 states and 349 transitions. [2022-12-13 19:45:01,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 19:45:01,662 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.1956521739130435) internal successors, (101), 46 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-12-13 19:45:01,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:01,664 INFO L225 Difference]: With dead ends: 316 [2022-12-13 19:45:01,664 INFO L226 Difference]: Without dead ends: 281 [2022-12-13 19:45:01,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1365, Invalid=2175, Unknown=0, NotChecked=0, Total=3540 [2022-12-13 19:45:01,666 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 707 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:01,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 144 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:45:01,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-12-13 19:45:01,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 124. [2022-12-13 19:45:01,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.024390243902439) internal successors, (126), 123 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:45:01,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2022-12-13 19:45:01,686 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 61 [2022-12-13 19:45:01,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:01,686 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2022-12-13 19:45:01,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.1956521739130435) internal successors, (101), 46 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:45:01,687 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2022-12-13 19:45:01,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-13 19:45:01,689 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:01,690 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:01,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 19:45:01,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 19:45:01,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:01,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:01,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1169192091, now seen corresponding path program 5 times [2022-12-13 19:45:01,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:01,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782716222] [2022-12-13 19:45:01,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:01,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2022-12-13 19:45:02,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:02,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782716222] [2022-12-13 19:45:02,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782716222] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:02,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333172637] [2022-12-13 19:45:02,880 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 19:45:02,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:02,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:02,881 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:02,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0049342c-3608-44f1-bf30-858ca25c1c58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process