./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_3_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_3_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS --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 e8259989f7570bf558987b7e4c2e7f61d77e5fd2d99fcc8a9ebe16670ccb62e9 --- 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-4e7fbc6 [2022-11-23 03:56:39,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:56:39,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:56:39,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:56:39,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:56:39,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:56:39,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:56:39,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:56:39,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:56:39,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:56:39,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:56:39,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:56:39,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:56:39,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:56:39,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:56:39,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:56:39,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:56:39,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:56:39,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:56:39,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:56:39,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:56:39,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:56:39,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:56:39,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:56:39,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:56:39,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:56:39,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:56:39,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:56:39,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:56:39,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:56:39,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:56:39,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:56:39,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:56:39,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:56:39,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:56:39,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:56:39,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:56:39,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:56:39,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:56:39,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:56:39,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:56:39,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:56:39,652 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:56:39,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:56:39,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:56:39,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:56:39,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:56:39,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:56:39,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:56:39,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:56:39,657 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:56:39,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:56:39,658 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:56:39,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:56:39,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:56:39,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:56:39,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:56:39,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:56:39,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:56:39,660 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:56:39,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:56:39,660 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:56:39,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:56:39,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:56:39,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:56:39,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:56:39,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:56:39,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:56:39,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:56:39,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:56:39,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:56:39,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:56:39,663 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:56:39,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:56:39,663 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:56:39,664 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:56:39,664 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_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8259989f7570bf558987b7e4c2e7f61d77e5fd2d99fcc8a9ebe16670ccb62e9 [2022-11-23 03:56:39,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:56:40,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:56:40,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:56:40,036 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:56:40,037 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:56:40,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/combinations/gcd_2+newton_3_4.i [2022-11-23 03:56:43,085 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:56:43,392 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:56:43,392 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i [2022-11-23 03:56:43,399 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/data/44b69da18/553bd9ba253e4f0d9ddc059cd819edc1/FLAGd7080ef98 [2022-11-23 03:56:43,415 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/data/44b69da18/553bd9ba253e4f0d9ddc059cd819edc1 [2022-11-23 03:56:43,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:56:43,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:56:43,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:56:43,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:56:43,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:56:43,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:56:43" (1/1) ... [2022-11-23 03:56:43,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a247f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:43, skipping insertion in model container [2022-11-23 03:56:43,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:56:43" (1/1) ... [2022-11-23 03:56:43,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:56:43,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:56:43,597 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_004a0012-7f5c-462b-ab18-8f6779b78585/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[1226,1239] [2022-11-23 03:56:43,622 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_004a0012-7f5c-462b-ab18-8f6779b78585/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[2862,2875] [2022-11-23 03:56:43,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:56:43,634 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:56:43,646 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_004a0012-7f5c-462b-ab18-8f6779b78585/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[1226,1239] [2022-11-23 03:56:43,659 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_004a0012-7f5c-462b-ab18-8f6779b78585/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[2862,2875] [2022-11-23 03:56:43,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:56:43,675 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:56:43,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:43 WrapperNode [2022-11-23 03:56:43,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:56:43,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:56:43,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:56:43,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:56:43,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:43" (1/1) ... [2022-11-23 03:56:43,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:43" (1/1) ... [2022-11-23 03:56:43,714 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 90 [2022-11-23 03:56:43,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:56:43,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:56:43,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:56:43,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:56:43,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:43" (1/1) ... [2022-11-23 03:56:43,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:43" (1/1) ... [2022-11-23 03:56:43,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:43" (1/1) ... [2022-11-23 03:56:43,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:43" (1/1) ... [2022-11-23 03:56:43,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:43" (1/1) ... [2022-11-23 03:56:43,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:43" (1/1) ... [2022-11-23 03:56:43,736 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:43" (1/1) ... [2022-11-23 03:56:43,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:43" (1/1) ... [2022-11-23 03:56:43,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:56:43,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:56:43,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:56:43,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:56:43,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:43" (1/1) ... [2022-11-23 03:56:43,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:56:43,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:56:43,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:56:43,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:56:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:56:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-23 03:56:43,829 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-23 03:56:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-23 03:56:43,829 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-23 03:56:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:56:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:56:43,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:56:43,920 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:56:43,923 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:56:44,188 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:56:44,196 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:56:44,197 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 03:56:44,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:56:44 BoogieIcfgContainer [2022-11-23 03:56:44,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:56:44,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:56:44,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:56:44,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:56:44,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:56:43" (1/3) ... [2022-11-23 03:56:44,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e05024a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:56:44, skipping insertion in model container [2022-11-23 03:56:44,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:56:43" (2/3) ... [2022-11-23 03:56:44,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e05024a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:56:44, skipping insertion in model container [2022-11-23 03:56:44,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:56:44" (3/3) ... [2022-11-23 03:56:44,220 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_4.i [2022-11-23 03:56:44,243 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:56:44,243 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 03:56:44,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:56:44,305 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;@54beabf1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:56:44,305 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 03:56:44,310 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 03:56:44,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 03:56:44,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:44,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:44,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:56:44,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:44,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-23 03:56:44,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:56:44,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997970859] [2022-11-23 03:56:44,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:44,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:56:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:44,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:56:44,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997970859] [2022-11-23 03:56:44,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997970859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:56:44,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:56:44,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:56:44,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377263410] [2022-11-23 03:56:44,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:56:44,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:56:44,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:56:44,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:56:44,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:56:44,932 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:56:45,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:45,050 INFO L93 Difference]: Finished difference Result 96 states and 121 transitions. [2022-11-23 03:56:45,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:56:45,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-23 03:56:45,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:45,071 INFO L225 Difference]: With dead ends: 96 [2022-11-23 03:56:45,072 INFO L226 Difference]: Without dead ends: 39 [2022-11-23 03:56:45,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:56:45,092 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 30 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:45,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 122 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:56:45,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-23 03:56:45,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-11-23 03:56:45,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 03:56:45,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-11-23 03:56:45,145 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2022-11-23 03:56:45,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:45,146 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-11-23 03:56:45,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:56:45,147 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-11-23 03:56:45,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 03:56:45,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:45,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:45,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:56:45,149 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:56:45,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:45,150 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-11-23 03:56:45,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:56:45,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225911871] [2022-11-23 03:56:45,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:45,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:56:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:45,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:56:45,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225911871] [2022-11-23 03:56:45,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225911871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:56:45,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:56:45,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:56:45,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336411610] [2022-11-23 03:56:45,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:56:45,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:56:45,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:56:45,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:56:45,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:56:45,289 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:56:45,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:45,386 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-23 03:56:45,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:56:45,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-23 03:56:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:45,388 INFO L225 Difference]: With dead ends: 39 [2022-11-23 03:56:45,398 INFO L226 Difference]: Without dead ends: 33 [2022-11-23 03:56:45,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:56:45,400 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:45,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 97 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:56:45,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-23 03:56:45,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-23 03:56:45,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 03:56:45,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-23 03:56:45,417 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-11-23 03:56:45,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:45,418 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-23 03:56:45,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:56:45,419 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-23 03:56:45,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 03:56:45,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:45,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:45,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:56:45,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:56:45,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:45,427 INFO L85 PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times [2022-11-23 03:56:45,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:56:45,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614219864] [2022-11-23 03:56:45,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:45,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:56:45,460 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:56:45,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984928502] [2022-11-23 03:56:45,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:45,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:56:45,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:56:45,465 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:56:45,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:56:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:56:45,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 03:56:45,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:56:45,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:45,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:56:45,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:56:45,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:56:45,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614219864] [2022-11-23 03:56:45,802 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:56:45,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984928502] [2022-11-23 03:56:45,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984928502] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:56:45,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:56:45,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-11-23 03:56:45,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483971806] [2022-11-23 03:56:45,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:56:45,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 03:56:45,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:56:45,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 03:56:45,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-23 03:56:45,806 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:56:45,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:56:45,922 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-11-23 03:56:45,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:56:45,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-23 03:56:45,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:56:45,924 INFO L225 Difference]: With dead ends: 40 [2022-11-23 03:56:45,924 INFO L226 Difference]: Without dead ends: 34 [2022-11-23 03:56:45,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:56:45,926 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:56:45,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 214 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:56:45,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-23 03:56:45,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-23 03:56:45,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 03:56:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-11-23 03:56:45,934 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 12 [2022-11-23 03:56:45,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:56:45,935 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-11-23 03:56:45,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:56:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-11-23 03:56:45,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 03:56:45,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:56:45,936 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:56:45,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 03:56:46,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:56:46,142 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:56:46,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:56:46,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1659957129, now seen corresponding path program 2 times [2022-11-23 03:56:46,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:56:46,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758364364] [2022-11-23 03:56:46,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:56:46,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:56:46,165 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:56:46,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253599456] [2022-11-23 03:56:46,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:56:46,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:56:46,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:56:46,170 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:56:46,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:56:46,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:56:46,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:56:46,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 03:56:46,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:57:07,987 WARN L233 SmtUtils]: Spent 20.64s on a formula simplification. DAG size of input: 72 DAG size of output: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:57:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:57:09,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:59:09,677 WARN L233 SmtUtils]: Spent 1.83m on a formula simplification. DAG size of input: 129 DAG size of output: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:59:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:59:12,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:59:12,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758364364] [2022-11-23 03:59:12,539 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:59:12,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253599456] [2022-11-23 03:59:12,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253599456] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:59:12,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:59:12,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-23 03:59:12,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971447939] [2022-11-23 03:59:12,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:59:12,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 03:59:12,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:59:12,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 03:59:12,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=195, Unknown=1, NotChecked=0, Total=240 [2022-11-23 03:59:12,542 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:59:19,057 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:59:20,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2022-11-23 03:59:23,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2022-11-23 03:59:25,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2022-11-23 03:59:29,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:59:32,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:59:35,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-11-23 03:59:36,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:59:36,955 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-11-23 03:59:36,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 03:59:36,955 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-23 03:59:36,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:59:36,956 INFO L225 Difference]: With dead ends: 46 [2022-11-23 03:59:36,957 INFO L226 Difference]: Without dead ends: 36 [2022-11-23 03:59:36,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 149.1s TimeCoverageRelationStatistics Valid=161, Invalid=487, Unknown=2, NotChecked=0, Total=650 [2022-11-23 03:59:36,964 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 40 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 9 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:59:36,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 294 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 75 Invalid, 4 Unknown, 0 Unchecked, 12.4s Time] [2022-11-23 03:59:36,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-23 03:59:36,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-23 03:59:36,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 03:59:36,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-11-23 03:59:36,979 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 13 [2022-11-23 03:59:36,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:59:36,980 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-11-23 03:59:36,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:59:36,981 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-11-23 03:59:36,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 03:59:36,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:59:36,987 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:59:36,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:59:37,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:59:37,192 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:59:37,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:59:37,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2084161321, now seen corresponding path program 3 times [2022-11-23 03:59:37,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:59:37,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412446052] [2022-11-23 03:59:37,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:59:37,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:59:37,204 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:59:37,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921041504] [2022-11-23 03:59:37,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:59:37,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:59:37,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:59:37,206 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:59:37,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:59:37,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 03:59:37,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:59:37,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-23 03:59:37,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:59:51,287 WARN L233 SmtUtils]: Spent 7.28s on a formula simplification. DAG size of input: 55 DAG size of output: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 04:00:33,908 WARN L233 SmtUtils]: Spent 29.60s on a formula simplification that was a NOOP. DAG size: 98 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 04:01:39,240 WARN L233 SmtUtils]: Spent 37.13s on a formula simplification. DAG size of input: 90 DAG size of output: 83 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 04:02:18,282 WARN L233 SmtUtils]: Spent 19.83s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 04:02:55,729 WARN L233 SmtUtils]: Spent 20.39s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 04:03:29,877 WARN L233 SmtUtils]: Spent 13.80s on a formula simplification that was a NOOP. DAG size: 87 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 04:03:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:38,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:06:54,776 WARN L233 SmtUtils]: Spent 2.41m on a formula simplification. DAG size of input: 83 DAG size of output: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 04:08:12,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 139 [2022-11-23 04:08:12,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:08:12,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412446052] [2022-11-23 04:08:12,931 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:08:12,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921041504] [2022-11-23 04:08:12,932 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-23 04:08:12,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 04:08:13,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:08:13,133 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:625) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:392) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:648) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 52 more [2022-11-23 04:08:13,138 INFO L158 Benchmark]: Toolchain (without parser) took 689719.42ms. Allocated memory was 155.2MB in the beginning and 190.8MB in the end (delta: 35.7MB). Free memory was 124.1MB in the beginning and 118.4MB in the end (delta: 5.7MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. [2022-11-23 04:08:13,139 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 155.2MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 04:08:13,139 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.56ms. Allocated memory is still 155.2MB. Free memory was 124.1MB in the beginning and 112.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 04:08:13,139 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.77ms. Allocated memory is still 155.2MB. Free memory was 112.6MB in the beginning and 110.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 04:08:13,140 INFO L158 Benchmark]: Boogie Preprocessor took 24.77ms. Allocated memory is still 155.2MB. Free memory was 110.7MB in the beginning and 109.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 04:08:13,140 INFO L158 Benchmark]: RCFGBuilder took 459.38ms. Allocated memory is still 155.2MB. Free memory was 109.5MB in the beginning and 96.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 04:08:13,140 INFO L158 Benchmark]: TraceAbstraction took 688933.42ms. Allocated memory was 155.2MB in the beginning and 190.8MB in the end (delta: 35.7MB). Free memory was 96.0MB in the beginning and 118.4MB in the end (delta: -22.4MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2022-11-23 04:08:13,142 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 155.2MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.56ms. Allocated memory is still 155.2MB. Free memory was 124.1MB in the beginning and 112.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.77ms. Allocated memory is still 155.2MB. Free memory was 112.6MB in the beginning and 110.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.77ms. Allocated memory is still 155.2MB. Free memory was 110.7MB in the beginning and 109.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 459.38ms. Allocated memory is still 155.2MB. Free memory was 109.5MB in the beginning and 96.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 688933.42ms. Allocated memory was 155.2MB in the beginning and 190.8MB in the end (delta: 35.7MB). Free memory was 96.0MB in the beginning and 118.4MB in the end (delta: -22.4MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_3_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS --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 e8259989f7570bf558987b7e4c2e7f61d77e5fd2d99fcc8a9ebe16670ccb62e9 --- 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-4e7fbc6 [2022-11-23 04:08:15,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 04:08:15,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 04:08:15,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 04:08:15,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 04:08:15,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 04:08:15,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 04:08:15,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 04:08:15,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 04:08:15,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 04:08:15,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 04:08:15,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 04:08:15,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 04:08:15,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 04:08:15,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 04:08:15,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 04:08:15,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 04:08:15,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 04:08:15,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 04:08:15,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 04:08:15,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 04:08:15,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 04:08:15,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 04:08:15,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 04:08:15,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 04:08:15,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 04:08:15,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 04:08:15,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 04:08:15,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 04:08:15,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 04:08:15,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 04:08:15,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 04:08:15,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 04:08:15,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 04:08:15,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 04:08:15,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 04:08:15,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 04:08:15,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 04:08:15,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 04:08:15,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 04:08:15,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 04:08:15,448 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-23 04:08:15,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 04:08:15,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 04:08:15,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 04:08:15,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 04:08:15,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 04:08:15,474 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 04:08:15,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 04:08:15,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 04:08:15,475 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 04:08:15,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 04:08:15,476 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 04:08:15,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 04:08:15,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 04:08:15,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 04:08:15,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 04:08:15,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 04:08:15,477 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 04:08:15,477 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 04:08:15,477 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 04:08:15,477 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 04:08:15,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 04:08:15,478 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 04:08:15,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 04:08:15,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 04:08:15,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 04:08:15,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 04:08:15,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:08:15,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 04:08:15,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 04:08:15,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 04:08:15,480 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-23 04:08:15,480 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 04:08:15,480 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 04:08:15,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 04:08:15,481 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 04:08:15,481 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 04:08:15,481 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-23 04:08:15,481 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_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8259989f7570bf558987b7e4c2e7f61d77e5fd2d99fcc8a9ebe16670ccb62e9 [2022-11-23 04:08:15,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 04:08:15,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 04:08:15,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 04:08:15,907 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 04:08:15,908 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 04:08:15,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/combinations/gcd_2+newton_3_4.i [2022-11-23 04:08:19,146 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 04:08:19,387 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 04:08:19,388 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i [2022-11-23 04:08:19,395 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/data/0860d2e67/1d59e82bdca14d0d91f2b9c044d2b0e8/FLAGf436c8c13 [2022-11-23 04:08:19,416 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/data/0860d2e67/1d59e82bdca14d0d91f2b9c044d2b0e8 [2022-11-23 04:08:19,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 04:08:19,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 04:08:19,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 04:08:19,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 04:08:19,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 04:08:19,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:08:19" (1/1) ... [2022-11-23 04:08:19,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68646ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:19, skipping insertion in model container [2022-11-23 04:08:19,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:08:19" (1/1) ... [2022-11-23 04:08:19,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 04:08:19,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 04:08:19,633 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_004a0012-7f5c-462b-ab18-8f6779b78585/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[1226,1239] [2022-11-23 04:08:19,660 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_004a0012-7f5c-462b-ab18-8f6779b78585/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[2862,2875] [2022-11-23 04:08:19,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:08:19,676 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 04:08:19,691 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_004a0012-7f5c-462b-ab18-8f6779b78585/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[1226,1239] [2022-11-23 04:08:19,701 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_004a0012-7f5c-462b-ab18-8f6779b78585/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[2862,2875] [2022-11-23 04:08:19,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:08:19,718 INFO L208 MainTranslator]: Completed translation [2022-11-23 04:08:19,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:19 WrapperNode [2022-11-23 04:08:19,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 04:08:19,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 04:08:19,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 04:08:19,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 04:08:19,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:19" (1/1) ... [2022-11-23 04:08:19,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:19" (1/1) ... [2022-11-23 04:08:19,769 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2022-11-23 04:08:19,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 04:08:19,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 04:08:19,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 04:08:19,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 04:08:19,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:19" (1/1) ... [2022-11-23 04:08:19,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:19" (1/1) ... [2022-11-23 04:08:19,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:19" (1/1) ... [2022-11-23 04:08:19,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:19" (1/1) ... [2022-11-23 04:08:19,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:19" (1/1) ... [2022-11-23 04:08:19,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:19" (1/1) ... [2022-11-23 04:08:19,832 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:19" (1/1) ... [2022-11-23 04:08:19,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:19" (1/1) ... [2022-11-23 04:08:19,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 04:08:19,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 04:08:19,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 04:08:19,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 04:08:19,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:19" (1/1) ... [2022-11-23 04:08:19,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:08:19,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:08:19,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 04:08:19,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 04:08:19,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 04:08:19,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 04:08:19,952 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-23 04:08:19,952 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-23 04:08:19,952 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-23 04:08:19,952 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-23 04:08:19,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 04:08:19,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 04:08:20,073 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 04:08:20,100 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 04:08:30,358 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 04:08:30,367 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 04:08:30,367 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 04:08:30,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:08:30 BoogieIcfgContainer [2022-11-23 04:08:30,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 04:08:30,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 04:08:30,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 04:08:30,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 04:08:30,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:08:19" (1/3) ... [2022-11-23 04:08:30,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccc45eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:08:30, skipping insertion in model container [2022-11-23 04:08:30,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:08:19" (2/3) ... [2022-11-23 04:08:30,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccc45eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:08:30, skipping insertion in model container [2022-11-23 04:08:30,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:08:30" (3/3) ... [2022-11-23 04:08:30,383 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_4.i [2022-11-23 04:08:30,406 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 04:08:30,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 04:08:30,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 04:08:30,472 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;@20a84ff1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 04:08:30,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 04:08:30,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 04:08:30,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 04:08:30,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:08:30,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:08:30,490 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:08:30,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:08:30,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-23 04:08:30,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 04:08:30,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982924037] [2022-11-23 04:08:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:08:30,513 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 04:08:30,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 04:08:30,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 04:08:30,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 04:08:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:08:30,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 04:08:30,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:08:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:08:30,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 04:08:30,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 04:08:30,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982924037] [2022-11-23 04:08:30,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982924037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:08:30,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:08:30,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:08:30,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506350496] [2022-11-23 04:08:30,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:08:30,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:08:30,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 04:08:30,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:08:30,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:08:30,808 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:08:30,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:08:30,897 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2022-11-23 04:08:30,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:08:30,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-23 04:08:30,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:08:30,907 INFO L225 Difference]: With dead ends: 74 [2022-11-23 04:08:30,908 INFO L226 Difference]: Without dead ends: 33 [2022-11-23 04:08:30,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:08:30,915 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 04:08:30,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 04:08:30,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-23 04:08:30,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-23 04:08:30,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 04:08:30,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-23 04:08:30,957 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2022-11-23 04:08:30,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:08:30,958 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-23 04:08:30,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:08:30,960 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-23 04:08:30,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 04:08:30,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:08:30,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:08:30,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 04:08:31,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 04:08:31,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:08:31,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:08:31,168 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-11-23 04:08:31,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 04:08:31,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542735780] [2022-11-23 04:08:31,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:08:31,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 04:08:31,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 04:08:31,173 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 04:08:31,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 04:08:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:08:31,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 04:08:31,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:08:31,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:08:31,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 04:08:31,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 04:08:31,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542735780] [2022-11-23 04:08:31,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542735780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:08:31,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:08:31,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 04:08:31,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087567168] [2022-11-23 04:08:31,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:08:31,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:08:31,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 04:08:31,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:08:31,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:08:31,426 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:08:31,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:08:31,619 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-11-23 04:08:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:08:31,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-23 04:08:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:08:31,622 INFO L225 Difference]: With dead ends: 40 [2022-11-23 04:08:31,622 INFO L226 Difference]: Without dead ends: 34 [2022-11-23 04:08:31,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 04:08:31,625 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 04:08:31,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 99 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 04:08:31,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-23 04:08:31,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-11-23 04:08:31,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 04:08:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-23 04:08:31,636 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2022-11-23 04:08:31,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:08:31,636 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-23 04:08:31,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:08:31,637 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-23 04:08:31,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 04:08:31,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:08:31,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:08:31,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 04:08:31,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 04:08:31,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:08:31,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:08:31,856 INFO L85 PathProgramCache]: Analyzing trace with hash 149955676, now seen corresponding path program 1 times [2022-11-23 04:08:31,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 04:08:31,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854030382] [2022-11-23 04:08:31,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:08:31,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 04:08:31,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 04:08:31,859 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 04:08:31,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-23 04:08:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:08:31,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 04:08:31,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:08:32,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 04:08:32,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 04:08:32,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 04:08:32,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854030382] [2022-11-23 04:08:32,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854030382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:08:32,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:08:32,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 04:08:32,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49879806] [2022-11-23 04:08:32,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:08:32,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:08:32,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 04:08:32,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:08:32,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:08:32,113 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:08:32,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:08:32,244 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-11-23 04:08:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:08:32,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-23 04:08:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:08:32,249 INFO L225 Difference]: With dead ends: 41 [2022-11-23 04:08:32,249 INFO L226 Difference]: Without dead ends: 33 [2022-11-23 04:08:32,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:08:32,251 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 04:08:32,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 99 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 04:08:32,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-23 04:08:32,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-23 04:08:32,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 04:08:32,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-23 04:08:32,267 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 12 [2022-11-23 04:08:32,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:08:32,268 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-23 04:08:32,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:08:32,268 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-23 04:08:32,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 04:08:32,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:08:32,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:08:32,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-23 04:08:32,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 04:08:32,488 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:08:32,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:08:32,488 INFO L85 PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times [2022-11-23 04:08:32,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 04:08:32,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636774190] [2022-11-23 04:08:32,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:08:32,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 04:08:32,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 04:08:32,492 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 04:08:32,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-23 04:08:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:08:32,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 04:08:32,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:08:33,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:08:33,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:08:34,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:08:34,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 04:08:34,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636774190] [2022-11-23 04:08:34,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636774190] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:08:34,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 04:08:34,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-23 04:08:34,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326804869] [2022-11-23 04:08:34,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 04:08:34,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 04:08:34,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 04:08:34,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 04:08:34,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-23 04:08:34,134 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:08:36,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:08:36,567 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-11-23 04:08:36,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 04:08:36,568 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-23 04:08:36,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:08:36,569 INFO L225 Difference]: With dead ends: 50 [2022-11-23 04:08:36,569 INFO L226 Difference]: Without dead ends: 36 [2022-11-23 04:08:36,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2022-11-23 04:08:36,571 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 32 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 04:08:36,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 265 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 04:08:36,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-23 04:08:36,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-23 04:08:36,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-23 04:08:36,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-11-23 04:08:36,580 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 12 [2022-11-23 04:08:36,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:08:36,580 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-11-23 04:08:36,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:08:36,581 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-11-23 04:08:36,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 04:08:36,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:08:36,582 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:08:36,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-23 04:08:36,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 04:08:36,797 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:08:36,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:08:36,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2084161321, now seen corresponding path program 2 times [2022-11-23 04:08:36,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 04:08:36,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151648600] [2022-11-23 04:08:36,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 04:08:36,799 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 04:08:36,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 04:08:36,800 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 04:08:36,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004a0012-7f5c-462b-ab18-8f6779b78585/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 04:08:42,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 04:08:42,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:08:42,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 04:08:42,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:09:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:09:53,031 INFO L328 TraceCheckSpWp]: Computing backward predicates...