./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c --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_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/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_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/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_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/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 aad83614f5b3454ec30b386336992d9fee88422d967149e7e88efe6256830f00 --- 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 21:03:28,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:03:28,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:03:28,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:03:28,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:03:28,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:03:28,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:03:28,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:03:28,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:03:28,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:03:28,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:03:28,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:03:28,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:03:28,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:03:28,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:03:28,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:03:28,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:03:28,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:03:28,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:03:28,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:03:28,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:03:28,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:03:28,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:03:28,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:03:28,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:03:28,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:03:28,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:03:28,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:03:28,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:03:28,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:03:28,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:03:28,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:03:28,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:03:28,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:03:28,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:03:28,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:03:28,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:03:28,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:03:28,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:03:28,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:03:28,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:03:28,902 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:03:28,932 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:03:28,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:03:28,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:03:28,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:03:28,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:03:28,934 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:03:28,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:03:28,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:03:28,935 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:03:28,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:03:28,935 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:03:28,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:03:28,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:03:28,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:03:28,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:03:28,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:03:28,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:03:28,936 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:03:28,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:03:28,937 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:03:28,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:03:28,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:03:28,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:03:28,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:03:28,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:28,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:03:28,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:03:28,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:03:28,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:03:28,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:03:28,940 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:03:28,941 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:03:28,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:03:28,941 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_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad83614f5b3454ec30b386336992d9fee88422d967149e7e88efe6256830f00 [2022-11-02 21:03:29,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:03:29,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:03:29,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:03:29,356 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:03:29,357 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:03:29,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c [2022-11-02 21:03:29,454 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/data/0439ca9bb/e3dbdc7215f049278fb74499218df711/FLAG3852d7a7b [2022-11-02 21:03:30,076 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:03:30,077 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c [2022-11-02 21:03:30,095 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/data/0439ca9bb/e3dbdc7215f049278fb74499218df711/FLAG3852d7a7b [2022-11-02 21:03:30,116 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/data/0439ca9bb/e3dbdc7215f049278fb74499218df711 [2022-11-02 21:03:30,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:03:30,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:03:30,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:30,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:03:30,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:03:30,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:30" (1/1) ... [2022-11-02 21:03:30,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d59a2e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:30, skipping insertion in model container [2022-11-02 21:03:30,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:30" (1/1) ... [2022-11-02 21:03:30,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:03:30,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:03:30,362 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_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c[573,586] [2022-11-02 21:03:30,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:30,395 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:03:30,413 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_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c[573,586] [2022-11-02 21:03:30,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:30,441 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:03:30,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:30 WrapperNode [2022-11-02 21:03:30,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:30,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:30,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:03:30,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:03:30,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:30" (1/1) ... [2022-11-02 21:03:30,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:30" (1/1) ... [2022-11-02 21:03:30,474 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-02 21:03:30,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:30,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:03:30,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:03:30,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:03:30,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:30" (1/1) ... [2022-11-02 21:03:30,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:30" (1/1) ... [2022-11-02 21:03:30,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:30" (1/1) ... [2022-11-02 21:03:30,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:30" (1/1) ... [2022-11-02 21:03:30,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:30" (1/1) ... [2022-11-02 21:03:30,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:30" (1/1) ... [2022-11-02 21:03:30,494 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:30" (1/1) ... [2022-11-02 21:03:30,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:30" (1/1) ... [2022-11-02 21:03:30,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:03:30,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:03:30,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:03:30,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:03:30,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:30" (1/1) ... [2022-11-02 21:03:30,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:30,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:30,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:03:30,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:03:30,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:03:30,590 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 21:03:30,590 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 21:03:30,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:03:30,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:03:30,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:03:30,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 21:03:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 21:03:30,666 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:03:30,667 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:03:30,877 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:03:30,884 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:03:30,884 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:03:30,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:30 BoogieIcfgContainer [2022-11-02 21:03:30,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:03:30,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:03:30,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:03:30,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:03:30,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:03:30" (1/3) ... [2022-11-02 21:03:30,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cda0a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:30, skipping insertion in model container [2022-11-02 21:03:30,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:30" (2/3) ... [2022-11-02 21:03:30,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cda0a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:30, skipping insertion in model container [2022-11-02 21:03:30,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:30" (3/3) ... [2022-11-02 21:03:30,922 INFO L112 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound5.c [2022-11-02 21:03:30,959 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:03:30,967 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:03:31,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:03:31,077 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;@49446aab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:03:31,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:03:31,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 21:03:31,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 21:03:31,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:31,092 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:31,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:31,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:31,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1086166160, now seen corresponding path program 1 times [2022-11-02 21:03:31,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:31,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521867294] [2022-11-02 21:03:31,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:31,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:31,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:31,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521867294] [2022-11-02 21:03:31,312 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-02 21:03:31,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365787216] [2022-11-02 21:03:31,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:31,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:31,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:31,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:31,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:03:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:31,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 21:03:31,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:31,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:03:31,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:31,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365787216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:31,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:31,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:03:31,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202268122] [2022-11-02 21:03:31,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:31,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:03:31,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:31,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:03:31,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:03:31,553 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:03:31,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:31,609 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2022-11-02 21:03:31,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:03:31,612 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-11-02 21:03:31,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:31,628 INFO L225 Difference]: With dead ends: 47 [2022-11-02 21:03:31,628 INFO L226 Difference]: Without dead ends: 21 [2022-11-02 21:03:31,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:03:31,638 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:31,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:03:31,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-02 21:03:31,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-02 21:03:31,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:03:31,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-02 21:03:31,693 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 18 [2022-11-02 21:03:31,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:31,694 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-02 21:03:31,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:03:31,695 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-02 21:03:31,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:03:31,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:31,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:31,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:31,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-02 21:03:31,923 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:31,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:31,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1345709874, now seen corresponding path program 1 times [2022-11-02 21:03:31,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:31,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785523297] [2022-11-02 21:03:31,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:31,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:31,950 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:31,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320226876] [2022-11-02 21:03:31,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:31,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:31,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:31,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:31,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:03:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:32,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:03:32,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:32,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:03:32,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:32,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:32,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785523297] [2022-11-02 21:03:32,151 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:32,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320226876] [2022-11-02 21:03:32,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320226876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:32,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:32,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:32,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659318595] [2022-11-02 21:03:32,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:32,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:32,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:32,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:32,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:32,156 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:03:32,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:32,177 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-11-02 21:03:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:03:32,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-02 21:03:32,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:32,179 INFO L225 Difference]: With dead ends: 30 [2022-11-02 21:03:32,180 INFO L226 Difference]: Without dead ends: 23 [2022-11-02 21:03:32,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:32,182 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:32,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:03:32,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-02 21:03:32,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-02 21:03:32,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:03:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-02 21:03:32,190 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 19 [2022-11-02 21:03:32,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:32,192 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-02 21:03:32,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:03:32,193 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-02 21:03:32,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:03:32,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:32,194 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:32,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:32,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:32,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:32,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:32,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1347497334, now seen corresponding path program 1 times [2022-11-02 21:03:32,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:32,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758599854] [2022-11-02 21:03:32,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:32,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:32,455 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:32,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1205928891] [2022-11-02 21:03:32,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:32,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:32,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:32,458 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:32,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:03:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:32,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:03:32,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:03:32,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:32,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:32,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758599854] [2022-11-02 21:03:32,858 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:32,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205928891] [2022-11-02 21:03:32,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205928891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:32,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:32,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 21:03:32,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869472835] [2022-11-02 21:03:32,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:32,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:03:32,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:32,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:03:32,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:03:32,862 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:03:32,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:32,992 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-11-02 21:03:32,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:03:32,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-02 21:03:32,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:32,995 INFO L225 Difference]: With dead ends: 33 [2022-11-02 21:03:32,995 INFO L226 Difference]: Without dead ends: 31 [2022-11-02 21:03:32,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:03:32,997 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:32,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 72 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:32,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-02 21:03:33,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-11-02 21:03:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 21:03:33,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-02 21:03:33,008 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 19 [2022-11-02 21:03:33,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:33,009 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-02 21:03:33,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:03:33,009 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-02 21:03:33,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 21:03:33,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:33,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:33,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:33,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:33,230 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:33,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:33,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1636478750, now seen corresponding path program 1 times [2022-11-02 21:03:33,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:33,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375486264] [2022-11-02 21:03:33,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:33,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:33,250 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:33,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1641403451] [2022-11-02 21:03:33,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:33,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:33,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:33,269 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:33,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:03:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:33,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:03:33,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:33,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:03:33,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:03:33,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:33,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375486264] [2022-11-02 21:03:33,714 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:33,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641403451] [2022-11-02 21:03:33,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641403451] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:33,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:33,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-11-02 21:03:33,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870572572] [2022-11-02 21:03:33,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:33,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:03:33,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:33,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:03:33,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:03:33,721 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 21:03:33,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:33,852 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-11-02 21:03:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:03:33,853 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2022-11-02 21:03:33,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:33,858 INFO L225 Difference]: With dead ends: 35 [2022-11-02 21:03:33,859 INFO L226 Difference]: Without dead ends: 30 [2022-11-02 21:03:33,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:03:33,866 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:33,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 79 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:33,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-02 21:03:33,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2022-11-02 21:03:33,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:03:33,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-11-02 21:03:33,876 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 25 [2022-11-02 21:03:33,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:33,877 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-11-02 21:03:33,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 21:03:33,878 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-11-02 21:03:33,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 21:03:33,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:33,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:33,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:34,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:34,091 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:34,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:34,091 INFO L85 PathProgramCache]: Analyzing trace with hash -126969667, now seen corresponding path program 1 times [2022-11-02 21:03:34,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:34,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342511807] [2022-11-02 21:03:34,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:34,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:34,111 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:34,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13416708] [2022-11-02 21:03:34,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:34,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:34,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:34,114 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:34,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:03:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:34,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:03:34,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:03:34,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:03:34,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:34,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342511807] [2022-11-02 21:03:34,310 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:34,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13416708] [2022-11-02 21:03:34,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13416708] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:34,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:34,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-11-02 21:03:34,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486892578] [2022-11-02 21:03:34,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:34,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:03:34,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:34,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:03:34,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:34,314 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-02 21:03:34,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:34,401 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2022-11-02 21:03:34,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:03:34,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 28 [2022-11-02 21:03:34,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:34,406 INFO L225 Difference]: With dead ends: 57 [2022-11-02 21:03:34,406 INFO L226 Difference]: Without dead ends: 52 [2022-11-02 21:03:34,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:03:34,408 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:34,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 88 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:03:34,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-02 21:03:34,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-02 21:03:34,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 21:03:34,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2022-11-02 21:03:34,442 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 28 [2022-11-02 21:03:34,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:34,443 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2022-11-02 21:03:34,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-02 21:03:34,443 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2022-11-02 21:03:34,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 21:03:34,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:34,448 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:34,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:34,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:34,662 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:34,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:34,663 INFO L85 PathProgramCache]: Analyzing trace with hash 972990450, now seen corresponding path program 2 times [2022-11-02 21:03:34,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:34,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453083593] [2022-11-02 21:03:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:34,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:34,688 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:34,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852398789] [2022-11-02 21:03:34,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:03:34,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:34,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:34,692 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:34,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:03:34,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:03:34,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:03:34,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:03:34,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:03:34,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 21:03:35,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:35,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453083593] [2022-11-02 21:03:35,114 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:35,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852398789] [2022-11-02 21:03:35,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852398789] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:35,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:35,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2022-11-02 21:03:35,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412221433] [2022-11-02 21:03:35,117 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:35,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:03:35,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:35,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:03:35,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:35,121 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 6 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-02 21:03:35,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:35,223 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2022-11-02 21:03:35,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:03:35,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 6 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 55 [2022-11-02 21:03:35,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:35,224 INFO L225 Difference]: With dead ends: 66 [2022-11-02 21:03:35,225 INFO L226 Difference]: Without dead ends: 61 [2022-11-02 21:03:35,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 96 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:03:35,226 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 24 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:35,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 86 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:03:35,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-02 21:03:35,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-02 21:03:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 46 states have internal predecessors, (52), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-02 21:03:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2022-11-02 21:03:35,241 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 55 [2022-11-02 21:03:35,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:35,242 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2022-11-02 21:03:35,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 6 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-02 21:03:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2022-11-02 21:03:35,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 21:03:35,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:35,243 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:35,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:35,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:35,466 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:35,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:35,466 INFO L85 PathProgramCache]: Analyzing trace with hash -611143683, now seen corresponding path program 3 times [2022-11-02 21:03:35,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:35,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807181832] [2022-11-02 21:03:35,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:35,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:35,482 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:35,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946295012] [2022-11-02 21:03:35,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:03:35,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:35,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:35,484 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:35,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:03:35,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 21:03:35,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-02 21:03:35,574 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:03:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:03:35,634 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:03:35,635 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:03:35,636 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:03:35,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:35,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:35,853 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2022-11-02 21:03:35,856 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:03:35,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:03:35 BoogieIcfgContainer [2022-11-02 21:03:35,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:03:35,896 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:03:35,896 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:03:35,896 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:03:35,897 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:30" (3/4) ... [2022-11-02 21:03:35,899 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-02 21:03:35,979 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 21:03:35,979 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:03:35,980 INFO L158 Benchmark]: Toolchain (without parser) took 5858.57ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 101.6MB in the beginning and 74.3MB in the end (delta: 27.3MB). Peak memory consumption was 74.3MB. Max. memory is 16.1GB. [2022-11-02 21:03:35,980 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 79.7MB. Free memory was 33.6MB in the beginning and 33.6MB in the end (delta: 43.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:03:35,980 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.58ms. Allocated memory is still 138.4MB. Free memory was 101.4MB in the beginning and 109.4MB in the end (delta: -7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:03:35,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.74ms. Allocated memory is still 138.4MB. Free memory was 109.4MB in the beginning and 108.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:03:35,981 INFO L158 Benchmark]: Boogie Preprocessor took 21.18ms. Allocated memory is still 138.4MB. Free memory was 108.0MB in the beginning and 106.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:03:35,981 INFO L158 Benchmark]: RCFGBuilder took 402.15ms. Allocated memory is still 138.4MB. Free memory was 106.7MB in the beginning and 96.8MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 21:03:35,983 INFO L158 Benchmark]: TraceAbstraction took 4993.98ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 95.8MB in the beginning and 78.5MB in the end (delta: 17.3MB). Peak memory consumption was 64.8MB. Max. memory is 16.1GB. [2022-11-02 21:03:35,984 INFO L158 Benchmark]: Witness Printer took 82.68ms. Allocated memory is still 184.5MB. Free memory was 78.5MB in the beginning and 74.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:03:35,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 79.7MB. Free memory was 33.6MB in the beginning and 33.6MB in the end (delta: 43.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.58ms. Allocated memory is still 138.4MB. Free memory was 101.4MB in the beginning and 109.4MB in the end (delta: -7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.74ms. Allocated memory is still 138.4MB. Free memory was 109.4MB in the beginning and 108.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.18ms. Allocated memory is still 138.4MB. Free memory was 108.0MB in the beginning and 106.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 402.15ms. Allocated memory is still 138.4MB. Free memory was 106.7MB in the beginning and 96.8MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4993.98ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 95.8MB in the beginning and 78.5MB in the end (delta: 17.3MB). Peak memory consumption was 64.8MB. Max. memory is 16.1GB. * Witness Printer took 82.68ms. Allocated memory is still 184.5MB. Free memory was 78.5MB in the beginning and 74.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) VAL [\old(cond)=1, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L29] RET assume_abort_if_not(x1 >= 0) VAL [counter=0, x1=6, x2=1] [L30] CALL assume_abort_if_not(x2 != 0) VAL [\old(cond)=1, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L30] RET assume_abort_if_not(x2 != 0) VAL [counter=0, x1=6, x2=1] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0, x1=6, x2=1, y1=0, y2=0, y3=6] [L36] EXPR counter++ VAL [counter=1, counter++=0, x1=6, x2=1, y1=0, y2=0, y3=6] [L36] COND TRUE counter++<5 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=1, x1=6, x2=1, y1=0, y2=0, y3=6] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=1, x1=6, x2=1, y1=0, y2=0, y3=6] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=1, x1=6, x2=1, y1=1, y2=0, y3=5] [L36] EXPR counter++ VAL [counter=2, counter++=1, x1=6, x2=1, y1=1, y2=0, y3=5] [L36] COND TRUE counter++<5 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=2] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=2, x1=6, x2=1, y1=1, y2=0, y3=5] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=2, x1=6, x2=1, y1=1, y2=0, y3=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=2, x1=6, x2=1, y1=2, y2=0, y3=4] [L36] EXPR counter++ VAL [counter=3, counter++=2, x1=6, x2=1, y1=2, y2=0, y3=4] [L36] COND TRUE counter++<5 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=3] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=3, x1=6, x2=1, y1=2, y2=0, y3=4] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=3, x1=6, x2=1, y1=2, y2=0, y3=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=3, x1=6, x2=1, y1=3, y2=0, y3=3] [L36] EXPR counter++ VAL [counter=4, counter++=3, x1=6, x2=1, y1=3, y2=0, y3=3] [L36] COND TRUE counter++<5 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=4] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=4, x1=6, x2=1, y1=3, y2=0, y3=3] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=4, x1=6, x2=1, y1=3, y2=0, y3=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=4, x1=6, x2=1, y1=4, y2=0, y3=2] [L36] EXPR counter++ VAL [counter=5, counter++=4, x1=6, x2=1, y1=4, y2=0, y3=2] [L36] COND TRUE counter++<5 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=5] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=5, x1=6, x2=1, y1=4, y2=0, y3=2] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=5, x1=6, x2=1, y1=4, y2=0, y3=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=5, x1=6, x2=1, y1=5, y2=0, y3=1] [L36] EXPR counter++ VAL [counter=6, counter++=5, x1=6, x2=1, y1=5, y2=0, y3=1] [L36] COND FALSE !(counter++<5) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) VAL [\old(cond)=0, counter=6] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=6] [L18] reach_error() VAL [\old(cond)=0, cond=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.8s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 103 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 100 mSDsluCounter, 411 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 275 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 193 IncrementalHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 136 mSDtfsCounter, 193 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 275 GetRequests, 226 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=6, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 246 NumberOfCodeBlocks, 246 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 263 ConstructedInterpolants, 0 QuantifiedInterpolants, 673 SizeOfPredicates, 15 NumberOfNonLiveVariables, 536 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 82/188 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-02 21:03:36,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec480f1a-c5a7-4743-a27e-3120fb15e2d6/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE