./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:59:59,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:59:59,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:59:59,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:59:59,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:59:59,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:59:59,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:59:59,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:59:59,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:59:59,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:59:59,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:59:59,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:59:59,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:59:59,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:59:59,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:59:59,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:59:59,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:59:59,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:59:59,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:59:59,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:59:59,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:59:59,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:59:59,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:59:59,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:59:59,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:59:59,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:59:59,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:59:59,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:59:59,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:59:59,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:59:59,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:59:59,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:59:59,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:59:59,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:59:59,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:59:59,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:59:59,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:59:59,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:59:59,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:59:59,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:59:59,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:59:59,475 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:59:59,490 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:59:59,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:59:59,491 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:59:59,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:59:59,492 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:59:59,492 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:59:59,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:59:59,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:59:59,493 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:59:59,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:59:59,493 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:59:59,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:59:59,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:59:59,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:59:59,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:59:59,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:59:59,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:59:59,494 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:59:59,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:59:59,494 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:59:59,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:59:59,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:59:59,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:59:59,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:59:59,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:59:59,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:59:59,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:59:59,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:59:59,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:59:59,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:59:59,496 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:59:59,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:59:59,497 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:59:59,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:59:59,497 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:59:59,497 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c [2022-12-13 11:59:59,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:59:59,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:59:59,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:59:59,689 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:59:59,689 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:59:59,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2022-12-13 12:00:02,275 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:00:02,448 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:00:02,448 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2022-12-13 12:00:02,457 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/data/56320a0db/235b24408d1249ae88bf368591cec43b/FLAG8de059e70 [2022-12-13 12:00:02,468 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/data/56320a0db/235b24408d1249ae88bf368591cec43b [2022-12-13 12:00:02,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:00:02,471 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:00:02,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:00:02,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:00:02,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:00:02,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:00:02" (1/1) ... [2022-12-13 12:00:02,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64176ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:00:02, skipping insertion in model container [2022-12-13 12:00:02,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:00:02" (1/1) ... [2022-12-13 12:00:02,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:00:02,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:00:02,767 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i[33021,33034] [2022-12-13 12:00:02,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:00:02,839 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:00:02,870 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i[33021,33034] [2022-12-13 12:00:02,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:00:02,955 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:00:02,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:00:02 WrapperNode [2022-12-13 12:00:02,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:00:02,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:00:02,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:00:02,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:00:02,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:00:02" (1/1) ... [2022-12-13 12:00:02,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:00:02" (1/1) ... [2022-12-13 12:00:03,012 INFO L138 Inliner]: procedures = 177, calls = 237, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 772 [2022-12-13 12:00:03,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:00:03,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:00:03,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:00:03,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:00:03,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:00:02" (1/1) ... [2022-12-13 12:00:03,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:00:02" (1/1) ... [2022-12-13 12:00:03,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:00:02" (1/1) ... [2022-12-13 12:00:03,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:00:02" (1/1) ... [2022-12-13 12:00:03,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:00:02" (1/1) ... [2022-12-13 12:00:03,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:00:02" (1/1) ... [2022-12-13 12:00:03,071 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:00:02" (1/1) ... [2022-12-13 12:00:03,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:00:02" (1/1) ... [2022-12-13 12:00:03,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:00:03,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:00:03,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:00:03,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:00:03,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:00:02" (1/1) ... [2022-12-13 12:00:03,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:00:03,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:00:03,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:00:03,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:00:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:00:03,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 12:00:03,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 12:00:03,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:00:03,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-13 12:00:03,152 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-13 12:00:03,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 12:00:03,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:00:03,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:00:03,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 12:00:03,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 12:00:03,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:00:03,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:00:03,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:00:03,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:00:03,304 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:00:03,306 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:00:04,095 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:00:04,101 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:00:04,102 INFO L300 CfgBuilder]: Removed 40 assume(true) statements. [2022-12-13 12:00:04,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:00:04 BoogieIcfgContainer [2022-12-13 12:00:04,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:00:04,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:00:04,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:00:04,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:00:04,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:00:02" (1/3) ... [2022-12-13 12:00:04,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cff7b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:00:04, skipping insertion in model container [2022-12-13 12:00:04,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:00:02" (2/3) ... [2022-12-13 12:00:04,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cff7b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:00:04, skipping insertion in model container [2022-12-13 12:00:04,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:00:04" (3/3) ... [2022-12-13 12:00:04,112 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test1-2.i [2022-12-13 12:00:04,126 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:00:04,126 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 12:00:04,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:00:04,167 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;@42a47221, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:00:04,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 12:00:04,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 138 states have (on average 1.673913043478261) internal successors, (231), 149 states have internal predecessors, (231), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-13 12:00:04,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 12:00:04,176 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:00:04,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:00:04,176 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:00:04,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:00:04,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1785640573, now seen corresponding path program 1 times [2022-12-13 12:00:04,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:00:04,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626939935] [2022-12-13 12:00:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:04,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:00:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:04,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:00:04,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:00:04,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626939935] [2022-12-13 12:00:04,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626939935] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:00:04,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:00:04,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:00:04,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574354344] [2022-12-13 12:00:04,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:00:04,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:00:04,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:00:04,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:00:04,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:00:04,373 INFO L87 Difference]: Start difference. First operand has 155 states, 138 states have (on average 1.673913043478261) internal successors, (231), 149 states have internal predecessors, (231), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:00:04,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:00:04,439 INFO L93 Difference]: Finished difference Result 393 states and 668 transitions. [2022-12-13 12:00:04,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:00:04,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-13 12:00:04,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:00:04,452 INFO L225 Difference]: With dead ends: 393 [2022-12-13 12:00:04,452 INFO L226 Difference]: Without dead ends: 207 [2022-12-13 12:00:04,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:00:04,458 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 104 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:00:04,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 419 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:00:04,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-12-13 12:00:04,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 123. [2022-12-13 12:00:04,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 107 states have (on average 1.3364485981308412) internal successors, (143), 117 states have internal predecessors, (143), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-13 12:00:04,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2022-12-13 12:00:04,506 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 10 [2022-12-13 12:00:04,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:00:04,506 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2022-12-13 12:00:04,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:00:04,507 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2022-12-13 12:00:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 12:00:04,509 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:00:04,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:00:04,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:00:04,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:00:04,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:00:04,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1821244368, now seen corresponding path program 1 times [2022-12-13 12:00:04,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:00:04,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103917119] [2022-12-13 12:00:04,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:04,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:00:04,662 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 12:00:04,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050072539] [2022-12-13 12:00:04,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:04,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:04,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:00:04,664 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:00:04,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:00:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 1545 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:00:05,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:00:05,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:00:05,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:00:05,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:00:05,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103917119] [2022-12-13 12:00:05,197 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 12:00:05,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050072539] [2022-12-13 12:00:05,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050072539] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:00:05,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:00:05,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:00:05,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372668423] [2022-12-13 12:00:05,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:00:05,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:00:05,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:00:05,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:00:05,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:00:05,202 INFO L87 Difference]: Start difference. First operand 123 states and 169 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:00:05,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:00:05,276 INFO L93 Difference]: Finished difference Result 264 states and 366 transitions. [2022-12-13 12:00:05,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:00:05,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-12-13 12:00:05,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:00:05,278 INFO L225 Difference]: With dead ends: 264 [2022-12-13 12:00:05,278 INFO L226 Difference]: Without dead ends: 144 [2022-12-13 12:00:05,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:00:05,280 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 9 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:00:05,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 281 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:00:05,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-12-13 12:00:05,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2022-12-13 12:00:05,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 127 states have (on average 1.2834645669291338) internal successors, (163), 137 states have internal predecessors, (163), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-13 12:00:05,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 189 transitions. [2022-12-13 12:00:05,292 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 189 transitions. Word has length 61 [2022-12-13 12:00:05,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:00:05,293 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 189 transitions. [2022-12-13 12:00:05,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:00:05,293 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 189 transitions. [2022-12-13 12:00:05,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 12:00:05,295 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:00:05,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:00:05,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:00:05,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:05,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:00:05,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:00:05,497 INFO L85 PathProgramCache]: Analyzing trace with hash -2120634546, now seen corresponding path program 1 times [2022-12-13 12:00:05,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:00:05,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404233143] [2022-12-13 12:00:05,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:05,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:00:05,691 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 12:00:05,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268332698] [2022-12-13 12:00:05,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:05,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:05,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:00:05,693 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:00:05,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:00:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:06,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:00:06,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:00:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:00:06,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:00:06,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:00:06,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404233143] [2022-12-13 12:00:06,232 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 12:00:06,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268332698] [2022-12-13 12:00:06,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268332698] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:00:06,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:00:06,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:00:06,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940132500] [2022-12-13 12:00:06,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:00:06,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:00:06,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:00:06,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:00:06,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:00:06,235 INFO L87 Difference]: Start difference. First operand 143 states and 189 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:00:06,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:00:06,297 INFO L93 Difference]: Finished difference Result 275 states and 367 transitions. [2022-12-13 12:00:06,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:00:06,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-12-13 12:00:06,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:00:06,299 INFO L225 Difference]: With dead ends: 275 [2022-12-13 12:00:06,300 INFO L226 Difference]: Without dead ends: 135 [2022-12-13 12:00:06,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:00:06,302 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 128 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:00:06,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 311 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:00:06,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-12-13 12:00:06,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2022-12-13 12:00:06,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 113 states have (on average 1.2566371681415929) internal successors, (142), 123 states have internal predecessors, (142), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-13 12:00:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 168 transitions. [2022-12-13 12:00:06,317 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 168 transitions. Word has length 61 [2022-12-13 12:00:06,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:00:06,317 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 168 transitions. [2022-12-13 12:00:06,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:00:06,317 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 168 transitions. [2022-12-13 12:00:06,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 12:00:06,320 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:00:06,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:00:06,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:00:06,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:06,522 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:00:06,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:00:06,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1648487844, now seen corresponding path program 1 times [2022-12-13 12:00:06,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:00:06,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469850128] [2022-12-13 12:00:06,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:06,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:00:06,777 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 12:00:06,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650532048] [2022-12-13 12:00:06,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:06,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:06,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:00:06,778 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:00:06,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:00:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:07,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 1533 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:00:07,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:00:07,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:00:07,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:00:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:00:07,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:00:07,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469850128] [2022-12-13 12:00:07,354 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 12:00:07,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650532048] [2022-12-13 12:00:07,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650532048] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:00:07,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:00:07,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 12:00:07,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995378557] [2022-12-13 12:00:07,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:00:07,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:00:07,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:00:07,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:00:07,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:00:07,357 INFO L87 Difference]: Start difference. First operand 129 states and 168 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:00:07,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:00:07,420 INFO L93 Difference]: Finished difference Result 433 states and 551 transitions. [2022-12-13 12:00:07,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:00:07,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-12-13 12:00:07,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:00:07,423 INFO L225 Difference]: With dead ends: 433 [2022-12-13 12:00:07,423 INFO L226 Difference]: Without dead ends: 402 [2022-12-13 12:00:07,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:00:07,425 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 335 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:00:07,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 626 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:00:07,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-12-13 12:00:07,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2022-12-13 12:00:07,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 377 states have (on average 1.2042440318302388) internal successors, (454), 387 states have internal predecessors, (454), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-13 12:00:07,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 498 transitions. [2022-12-13 12:00:07,457 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 498 transitions. Word has length 61 [2022-12-13 12:00:07,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:00:07,458 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 498 transitions. [2022-12-13 12:00:07,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:00:07,458 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 498 transitions. [2022-12-13 12:00:07,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-12-13 12:00:07,464 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:00:07,464 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:00:07,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:00:07,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:07,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:00:07,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:00:07,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1529957955, now seen corresponding path program 2 times [2022-12-13 12:00:07,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:00:07,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459025841] [2022-12-13 12:00:07,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:07,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:00:08,019 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 12:00:08,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186064612] [2022-12-13 12:00:08,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:00:08,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:08,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:00:08,020 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:00:08,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:00:08,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 12:00:08,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:00:08,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 12:00:08,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:00:09,240 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-12-13 12:00:09,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:00:09,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:00:09,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459025841] [2022-12-13 12:00:09,241 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 12:00:09,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186064612] [2022-12-13 12:00:09,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186064612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:00:09,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:00:09,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:00:09,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071856295] [2022-12-13 12:00:09,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:00:09,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:00:09,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:00:09,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:00:09,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:00:09,244 INFO L87 Difference]: Start difference. First operand 402 states and 498 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:00:09,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:00:09,409 INFO L93 Difference]: Finished difference Result 746 states and 930 transitions. [2022-12-13 12:00:09,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:00:09,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2022-12-13 12:00:09,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:00:09,412 INFO L225 Difference]: With dead ends: 746 [2022-12-13 12:00:09,412 INFO L226 Difference]: Without dead ends: 400 [2022-12-13 12:00:09,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:00:09,414 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 15 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:00:09,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 432 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:00:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-12-13 12:00:09,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2022-12-13 12:00:09,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 375 states have (on average 1.2026666666666668) internal successors, (451), 385 states have internal predecessors, (451), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-13 12:00:09,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 495 transitions. [2022-12-13 12:00:09,429 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 495 transitions. Word has length 214 [2022-12-13 12:00:09,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:00:09,430 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 495 transitions. [2022-12-13 12:00:09,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:00:09,430 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 495 transitions. [2022-12-13 12:00:09,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-12-13 12:00:09,433 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:00:09,433 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:00:09,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:00:09,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:09,634 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:00:09,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:00:09,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1503023582, now seen corresponding path program 1 times [2022-12-13 12:00:09,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:00:09,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938564827] [2022-12-13 12:00:09,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:09,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:00:09,906 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 12:00:09,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666780606] [2022-12-13 12:00:09,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:09,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:09,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:00:09,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:00:09,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:00:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:11,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 5083 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:00:11,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:00:11,588 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:00:11,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:00:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:00:11,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:00:11,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938564827] [2022-12-13 12:00:11,797 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 12:00:11,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666780606] [2022-12-13 12:00:11,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666780606] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:00:11,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:00:11,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-13 12:00:11,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685333353] [2022-12-13 12:00:11,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:00:11,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:00:11,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:00:11,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:00:11,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:00:11,801 INFO L87 Difference]: Start difference. First operand 400 states and 495 transitions. Second operand has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 12:00:11,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:00:11,945 INFO L93 Difference]: Finished difference Result 977 states and 1211 transitions. [2022-12-13 12:00:11,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 12:00:11,946 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 229 [2022-12-13 12:00:11,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:00:11,950 INFO L225 Difference]: With dead ends: 977 [2022-12-13 12:00:11,950 INFO L226 Difference]: Without dead ends: 946 [2022-12-13 12:00:11,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:00:11,952 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 868 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:00:11,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 1333 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:00:11,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-12-13 12:00:11,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 946. [2022-12-13 12:00:11,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 903 states have (on average 1.1904761904761905) internal successors, (1075), 913 states have internal predecessors, (1075), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2022-12-13 12:00:11,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1155 transitions. [2022-12-13 12:00:11,984 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1155 transitions. Word has length 229 [2022-12-13 12:00:11,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:00:11,984 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1155 transitions. [2022-12-13 12:00:11,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 12:00:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1155 transitions. [2022-12-13 12:00:11,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2022-12-13 12:00:11,993 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:00:11,993 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:00:12,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 12:00:12,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:12,195 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:00:12,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:00:12,196 INFO L85 PathProgramCache]: Analyzing trace with hash 78109822, now seen corresponding path program 2 times [2022-12-13 12:00:12,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:00:12,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036344963] [2022-12-13 12:00:12,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:12,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:00:12,807 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 12:00:12,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913418697] [2022-12-13 12:00:12,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:00:12,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:12,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:00:12,808 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:00:12,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 12:12:38,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:12:38,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:12:39,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 13909 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 12:12:39,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:12:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 329 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2022-12-13 12:12:39,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:12:39,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:12:39,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036344963] [2022-12-13 12:12:39,124 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 12:12:39,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913418697] [2022-12-13 12:12:39,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913418697] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:39,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:39,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:12:39,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312859188] [2022-12-13 12:12:39,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:39,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:12:39,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:12:39,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:12:39,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:12:39,127 INFO L87 Difference]: Start difference. First operand 946 states and 1155 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 12:12:39,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:12:39,172 INFO L93 Difference]: Finished difference Result 1845 states and 2287 transitions. [2022-12-13 12:12:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:12:39,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 535 [2022-12-13 12:12:39,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:12:39,177 INFO L225 Difference]: With dead ends: 1845 [2022-12-13 12:12:39,177 INFO L226 Difference]: Without dead ends: 949 [2022-12-13 12:12:39,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:12:39,179 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 2 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:12:39,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 470 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:12:39,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-12-13 12:12:39,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 949. [2022-12-13 12:12:39,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 905 states have (on average 1.1911602209944752) internal successors, (1078), 916 states have internal predecessors, (1078), 40 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (50), 31 states have call predecessors, (50), 40 states have call successors, (50) [2022-12-13 12:12:39,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1168 transitions. [2022-12-13 12:12:39,234 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1168 transitions. Word has length 535 [2022-12-13 12:12:39,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:12:39,234 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1168 transitions. [2022-12-13 12:12:39,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 12:12:39,235 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1168 transitions. [2022-12-13 12:12:39,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2022-12-13 12:12:39,252 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:12:39,252 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:12:39,453 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2022-12-13 12:12:39,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 137 [2022-12-13 12:12:39,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 12:12:39,527 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:12:39,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:39,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1300449632, now seen corresponding path program 1 times [2022-12-13 12:12:39,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:12:39,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72144283] [2022-12-13 12:12:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:39,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:12:40,105 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 12:12:40,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2056620095] [2022-12-13 12:12:40,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:40,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:12:40,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:12:40,106 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:12:40,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e85740f-bdb6-4a7e-a68b-2459828da518/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process