./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/array_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/array_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc --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 e8c27e61ac5d5a22c0e00a5dbac1b872460567877a501387ed9d5bda89096498 --- 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-5e519f3 [2022-11-02 20:45:06,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:45:06,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:45:07,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:45:07,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:45:07,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:45:07,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:45:07,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:45:07,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:45:07,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:45:07,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:45:07,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:45:07,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:45:07,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:45:07,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:45:07,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:45:07,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:45:07,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:45:07,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:45:07,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:45:07,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:45:07,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:45:07,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:45:07,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:45:07,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:45:07,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:45:07,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:45:07,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:45:07,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:45:07,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:45:07,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:45:07,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:45:07,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:45:07,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:45:07,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:45:07,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:45:07,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:45:07,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:45:07,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:45:07,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:45:07,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:45:07,056 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:45:07,077 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:45:07,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:45:07,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:45:07,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:45:07,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:45:07,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:45:07,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:45:07,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:45:07,080 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:45:07,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:45:07,081 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:45:07,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:45:07,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:45:07,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:45:07,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:45:07,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:45:07,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:45:07,083 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:45:07,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:45:07,083 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:45:07,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:45:07,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:45:07,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:45:07,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:45:07,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:45:07,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:45:07,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:45:07,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:45:07,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:45:07,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:45:07,085 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:45:07,086 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:45:07,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:45:07,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8c27e61ac5d5a22c0e00a5dbac1b872460567877a501387ed9d5bda89096498 [2022-11-02 20:45:07,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:45:07,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:45:07,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:45:07,372 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:45:07,373 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:45:07,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/loop-acceleration/array_4.i [2022-11-02 20:45:07,466 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/data/3209e642e/e7788efe1b144cb6923f8635f319fdcb/FLAG6f46d8395 [2022-11-02 20:45:08,029 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:45:08,029 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/sv-benchmarks/c/loop-acceleration/array_4.i [2022-11-02 20:45:08,038 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/data/3209e642e/e7788efe1b144cb6923f8635f319fdcb/FLAG6f46d8395 [2022-11-02 20:45:08,399 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/data/3209e642e/e7788efe1b144cb6923f8635f319fdcb [2022-11-02 20:45:08,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:45:08,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:45:08,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:45:08,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:45:08,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:45:08,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:45:08" (1/1) ... [2022-11-02 20:45:08,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a79da15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:08, skipping insertion in model container [2022-11-02 20:45:08,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:45:08" (1/1) ... [2022-11-02 20:45:08,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:45:08,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:45:08,615 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/sv-benchmarks/c/loop-acceleration/array_4.i[848,861] [2022-11-02 20:45:08,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:45:08,634 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:45:08,646 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/sv-benchmarks/c/loop-acceleration/array_4.i[848,861] [2022-11-02 20:45:08,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:45:08,663 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:45:08,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:08 WrapperNode [2022-11-02 20:45:08,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:45:08,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:45:08,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:45:08,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:45:08,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:08" (1/1) ... [2022-11-02 20:45:08,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:08" (1/1) ... [2022-11-02 20:45:08,701 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2022-11-02 20:45:08,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:45:08,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:45:08,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:45:08,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:45:08,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:08" (1/1) ... [2022-11-02 20:45:08,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:08" (1/1) ... [2022-11-02 20:45:08,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:08" (1/1) ... [2022-11-02 20:45:08,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:08" (1/1) ... [2022-11-02 20:45:08,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:08" (1/1) ... [2022-11-02 20:45:08,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:08" (1/1) ... [2022-11-02 20:45:08,733 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:08" (1/1) ... [2022-11-02 20:45:08,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:08" (1/1) ... [2022-11-02 20:45:08,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:45:08,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:45:08,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:45:08,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:45:08,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:08" (1/1) ... [2022-11-02 20:45:08,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:45:08,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:08,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:45:08,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:45:08,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:45:08,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:45:08,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:45:08,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:45:08,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:45:08,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:45:08,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:45:08,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:45:08,908 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:45:08,910 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:45:09,091 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:45:09,097 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:45:09,097 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:45:09,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:45:09 BoogieIcfgContainer [2022-11-02 20:45:09,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:45:09,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:45:09,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:45:09,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:45:09,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:45:08" (1/3) ... [2022-11-02 20:45:09,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b21fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:45:09, skipping insertion in model container [2022-11-02 20:45:09,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:08" (2/3) ... [2022-11-02 20:45:09,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b21fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:45:09, skipping insertion in model container [2022-11-02 20:45:09,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:45:09" (3/3) ... [2022-11-02 20:45:09,121 INFO L112 eAbstractionObserver]: Analyzing ICFG array_4.i [2022-11-02 20:45:09,156 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:45:09,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:45:09,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:45:09,221 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;@41867e6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:45:09,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:45:09,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:09,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:45:09,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:09,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:09,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:09,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:09,238 INFO L85 PathProgramCache]: Analyzing trace with hash 212257263, now seen corresponding path program 1 times [2022-11-02 20:45:09,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:09,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537505971] [2022-11-02 20:45:09,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:09,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:09,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:09,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:09,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537505971] [2022-11-02 20:45:09,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537505971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:09,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:09,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:45:09,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126999717] [2022-11-02 20:45:09,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:09,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:45:09,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:09,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:45:09,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:45:09,628 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:09,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:09,688 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2022-11-02 20:45:09,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:45:09,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-11-02 20:45:09,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:09,698 INFO L225 Difference]: With dead ends: 41 [2022-11-02 20:45:09,699 INFO L226 Difference]: Without dead ends: 21 [2022-11-02 20:45:09,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:45:09,705 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:09,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 21 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:45:09,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-02 20:45:09,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 13. [2022-11-02 20:45:09,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-02 20:45:09,743 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2022-11-02 20:45:09,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:09,744 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-02 20:45:09,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:09,745 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-02 20:45:09,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:45:09,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:09,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:09,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:45:09,747 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:09,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:09,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1562582865, now seen corresponding path program 1 times [2022-11-02 20:45:09,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:09,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704621552] [2022-11-02 20:45:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:09,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:09,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:09,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704621552] [2022-11-02 20:45:09,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704621552] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:09,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388683454] [2022-11-02 20:45:09,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:09,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:09,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:09,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:09,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:45:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:09,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:45:09,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:09,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:10,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388683454] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:10,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:10,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-02 20:45:10,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816535932] [2022-11-02 20:45:10,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:10,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:45:10,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:10,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:45:10,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:45:10,077 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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) [2022-11-02 20:45:10,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:10,201 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2022-11-02 20:45:10,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:45:10,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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) Word has length 11 [2022-11-02 20:45:10,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:10,208 INFO L225 Difference]: With dead ends: 55 [2022-11-02 20:45:10,209 INFO L226 Difference]: Without dead ends: 47 [2022-11-02 20:45:10,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:45:10,212 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 52 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:10,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 26 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:45:10,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-02 20:45:10,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 19. [2022-11-02 20:45:10,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-02 20:45:10,228 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2022-11-02 20:45:10,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:10,229 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-02 20:45:10,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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) [2022-11-02 20:45:10,229 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-02 20:45:10,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:45:10,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:10,231 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:10,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:10,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:10,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:10,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:10,448 INFO L85 PathProgramCache]: Analyzing trace with hash -10610165, now seen corresponding path program 2 times [2022-11-02 20:45:10,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:10,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129549356] [2022-11-02 20:45:10,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:10,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:45:10,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:10,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129549356] [2022-11-02 20:45:10,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129549356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:10,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:10,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:45:10,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029014444] [2022-11-02 20:45:10,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:10,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:45:10,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:10,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:45:10,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:45:10,705 INFO L87 Difference]: Start difference. First operand 19 states and 20 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) [2022-11-02 20:45:10,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:10,750 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2022-11-02 20:45:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:45:10,751 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 17 [2022-11-02 20:45:10,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:10,752 INFO L225 Difference]: With dead ends: 26 [2022-11-02 20:45:10,752 INFO L226 Difference]: Without dead ends: 22 [2022-11-02 20:45:10,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:10,753 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:10,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 20 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:45:10,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-02 20:45:10,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-11-02 20:45:10,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-11-02 20:45:10,758 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2022-11-02 20:45:10,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:10,758 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-11-02 20:45:10,758 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) [2022-11-02 20:45:10,758 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-11-02 20:45:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:45:10,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:10,759 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:10,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:45:10,760 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:10,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:10,760 INFO L85 PathProgramCache]: Analyzing trace with hash -907607845, now seen corresponding path program 1 times [2022-11-02 20:45:10,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:10,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255470140] [2022-11-02 20:45:10,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:10,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:45:10,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:10,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255470140] [2022-11-02 20:45:10,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255470140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:10,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026695372] [2022-11-02 20:45:10,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:10,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:10,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:10,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:10,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:45:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:10,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:45:10,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:45:11,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:45:11,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026695372] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:11,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:11,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2022-11-02 20:45:11,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252121013] [2022-11-02 20:45:11,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:11,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:45:11,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:11,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:45:11,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:45:11,137 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:11,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:11,340 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2022-11-02 20:45:11,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:45:11,340 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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 20 [2022-11-02 20:45:11,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:11,341 INFO L225 Difference]: With dead ends: 89 [2022-11-02 20:45:11,341 INFO L226 Difference]: Without dead ends: 61 [2022-11-02 20:45:11,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:45:11,343 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 114 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:11,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 38 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:45:11,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-02 20:45:11,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2022-11-02 20:45:11,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:11,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2022-11-02 20:45:11,352 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 20 [2022-11-02 20:45:11,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:11,352 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2022-11-02 20:45:11,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:11,353 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2022-11-02 20:45:11,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-02 20:45:11,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:11,354 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:11,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:11,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:11,576 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:11,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:11,577 INFO L85 PathProgramCache]: Analyzing trace with hash 933738495, now seen corresponding path program 2 times [2022-11-02 20:45:11,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:11,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349095279] [2022-11-02 20:45:11,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:11,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:11,929 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-02 20:45:11,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:11,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349095279] [2022-11-02 20:45:11,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349095279] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:11,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457868120] [2022-11-02 20:45:11,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:45:11,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:11,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:11,935 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:11,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:45:12,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:45:12,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:45:12,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:45:12,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:12,164 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-02 20:45:12,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-02 20:45:12,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457868120] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:12,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:12,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-11-02 20:45:12,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619247210] [2022-11-02 20:45:12,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:12,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-02 20:45:12,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:12,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-02 20:45:12,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:45:12,445 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:12,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:12,705 INFO L93 Difference]: Finished difference Result 206 states and 219 transitions. [2022-11-02 20:45:12,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:45:12,708 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 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 59 [2022-11-02 20:45:12,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:12,710 INFO L225 Difference]: With dead ends: 206 [2022-11-02 20:45:12,710 INFO L226 Difference]: Without dead ends: 169 [2022-11-02 20:45:12,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:45:12,712 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 270 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:12,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 77 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:45:12,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-02 20:45:12,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 84. [2022-11-02 20:45:12,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:12,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2022-11-02 20:45:12,737 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 59 [2022-11-02 20:45:12,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:12,738 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2022-11-02 20:45:12,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:12,738 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2022-11-02 20:45:12,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-02 20:45:12,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:12,742 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:12,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:12,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:12,943 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:12,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:12,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1105658393, now seen corresponding path program 3 times [2022-11-02 20:45:12,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:12,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894413367] [2022-11-02 20:45:12,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:12,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:13,699 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-02 20:45:13,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:13,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894413367] [2022-11-02 20:45:13,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894413367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:13,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424169323] [2022-11-02 20:45:13,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:45:13,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:13,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:13,703 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:13,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:45:13,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-02 20:45:13,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:45:13,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:45:13,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:14,017 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2022-11-02 20:45:14,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2022-11-02 20:45:14,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424169323] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:14,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:14,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 14] total 38 [2022-11-02 20:45:14,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624564072] [2022-11-02 20:45:14,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:14,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-02 20:45:14,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:14,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-02 20:45:14,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 20:45:14,477 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 38 states, 38 states have (on average 3.3684210526315788) internal successors, (128), 38 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:15,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:15,388 INFO L93 Difference]: Finished difference Result 262 states and 297 transitions. [2022-11-02 20:45:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-02 20:45:15,388 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3684210526315788) internal successors, (128), 38 states have internal predecessors, (128), 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 83 [2022-11-02 20:45:15,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:15,390 INFO L225 Difference]: With dead ends: 262 [2022-11-02 20:45:15,390 INFO L226 Difference]: Without dead ends: 177 [2022-11-02 20:45:15,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1316, Invalid=2466, Unknown=0, NotChecked=0, Total=3782 [2022-11-02 20:45:15,393 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 284 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:15,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 92 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:45:15,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-02 20:45:15,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2022-11-02 20:45:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.0114285714285713) internal successors, (177), 175 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2022-11-02 20:45:15,409 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 83 [2022-11-02 20:45:15,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:15,409 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2022-11-02 20:45:15,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3684210526315788) internal successors, (128), 38 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:15,410 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2022-11-02 20:45:15,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-02 20:45:15,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:15,413 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:15,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:15,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:15,627 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:15,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:15,627 INFO L85 PathProgramCache]: Analyzing trace with hash -341612077, now seen corresponding path program 4 times [2022-11-02 20:45:15,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:15,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149820849] [2022-11-02 20:45:15,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:15,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:17,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-02 20:45:17,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:17,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149820849] [2022-11-02 20:45:17,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149820849] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:17,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295241219] [2022-11-02 20:45:17,428 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:45:17,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:17,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:17,430 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:17,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:45:17,629 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:45:17,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:45:17,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-02 20:45:17,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:17,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-02 20:45:17,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:19,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-02 20:45:19,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295241219] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:19,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:19,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 69 [2022-11-02 20:45:19,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389168379] [2022-11-02 20:45:19,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:19,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-11-02 20:45:19,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:19,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-11-02 20:45:19,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2022-11-02 20:45:19,552 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 69 states, 69 states have (on average 2.0869565217391304) internal successors, (144), 69 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:20,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:20,566 INFO L93 Difference]: Finished difference Result 578 states and 613 transitions. [2022-11-02 20:45:20,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-02 20:45:20,567 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.0869565217391304) internal successors, (144), 69 states have internal predecessors, (144), 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 175 [2022-11-02 20:45:20,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:20,569 INFO L225 Difference]: With dead ends: 578 [2022-11-02 20:45:20,569 INFO L226 Difference]: Without dead ends: 469 [2022-11-02 20:45:20,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2022-11-02 20:45:20,571 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1091 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:20,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 188 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:45:20,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-11-02 20:45:20,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 244. [2022-11-02 20:45:20,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.008230452674897) internal successors, (245), 243 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:20,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 245 transitions. [2022-11-02 20:45:20,594 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 245 transitions. Word has length 175 [2022-11-02 20:45:20,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:20,594 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 245 transitions. [2022-11-02 20:45:20,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.0869565217391304) internal successors, (144), 69 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:20,595 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 245 transitions. [2022-11-02 20:45:20,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-02 20:45:20,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:20,599 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 35, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:20,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:20,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:20,819 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:20,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:20,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1238761585, now seen corresponding path program 5 times [2022-11-02 20:45:20,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:20,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505009635] [2022-11-02 20:45:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:20,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:25,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6107 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-02 20:45:25,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:25,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505009635] [2022-11-02 20:45:25,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505009635] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:25,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401052968] [2022-11-02 20:45:25,527 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:45:25,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:25,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:25,531 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:25,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:47:33,001 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2022-11-02 20:47:33,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:47:33,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-02 20:47:33,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6107 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-02 20:47:33,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:47:39,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6107 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-02 20:47:39,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401052968] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:47:39,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:47:39,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 137 [2022-11-02 20:47:39,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998426686] [2022-11-02 20:47:39,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:47:39,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2022-11-02 20:47:39,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:39,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2022-11-02 20:47:39,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2022-11-02 20:47:39,094 INFO L87 Difference]: Start difference. First operand 244 states and 245 transitions. Second operand has 137 states, 137 states have (on average 2.0437956204379564) internal successors, (280), 137 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:45,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:45,743 INFO L93 Difference]: Finished difference Result 1190 states and 1259 transitions. [2022-11-02 20:47:45,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-11-02 20:47:45,743 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 2.0437956204379564) internal successors, (280), 137 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2022-11-02 20:47:45,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:45,748 INFO L225 Difference]: With dead ends: 1190 [2022-11-02 20:47:45,748 INFO L226 Difference]: Without dead ends: 1081 [2022-11-02 20:47:45,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2022-11-02 20:47:45,754 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3923 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 837 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3923 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 837 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:45,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3923 Valid, 459 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [837 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:47:45,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-11-02 20:47:45,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 380. [2022-11-02 20:47:45,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 1.0052770448548813) internal successors, (381), 379 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:45,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 381 transitions. [2022-11-02 20:47:45,777 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 381 transitions. Word has length 243 [2022-11-02 20:47:45,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:45,778 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 381 transitions. [2022-11-02 20:47:45,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 2.0437956204379564) internal successors, (280), 137 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:45,779 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 381 transitions. [2022-11-02 20:47:45,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2022-11-02 20:47:45,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:45,786 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 35, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:45,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:46,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 20:47:46,003 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:46,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:46,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1624846073, now seen corresponding path program 6 times [2022-11-02 20:47:46,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:46,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368078600] [2022-11-02 20:47:46,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:46,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:01,257 INFO L134 CoverageAnalysis]: Checked inductivity of 19707 backedges. 0 proven. 17956 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-02 20:48:01,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:01,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368078600] [2022-11-02 20:48:01,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368078600] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:48:01,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242100640] [2022-11-02 20:48:01,258 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:48:01,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:48:01,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:48:01,259 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:48:01,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f097e029-a513-407b-9a13-8ddc83115e77/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process