./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8 --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-e04fb08 [2022-11-16 12:34:56,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:34:56,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:34:56,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:34:56,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:34:56,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:34:56,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:34:56,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:34:56,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:34:56,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:34:56,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:34:56,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:34:56,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:34:56,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:34:56,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:34:56,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:34:56,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:34:56,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:34:56,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:34:56,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:34:56,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:34:56,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:34:56,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:34:56,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:34:56,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:34:56,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:34:56,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:34:56,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:34:56,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:34:56,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:34:56,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:34:56,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:34:56,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:34:56,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:34:56,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:34:56,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:34:56,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:34:56,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:34:56,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:34:56,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:34:56,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:34:56,667 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:34:56,689 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:34:56,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:34:56,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:34:56,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:34:56,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:34:56,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:34:56,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:34:56,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:34:56,692 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:34:56,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:34:56,692 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:34:56,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:34:56,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:34:56,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:34:56,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:34:56,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:34:56,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:34:56,693 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:34:56,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:34:56,694 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:34:56,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:34:56,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:34:56,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:34:56,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:34:56,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:34:56,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:34:56,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:34:56,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:34:56,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:34:56,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:34:56,701 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:34:56,701 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:34:56,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:34:56,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8259989f7570bf558987b7e4c2e7f61d77e5fd2d99fcc8a9ebe16670ccb62e9 [2022-11-16 12:34:56,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:34:56,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:34:57,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:34:57,008 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:34:57,009 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:34:57,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/gcd_2+newton_3_4.i [2022-11-16 12:34:57,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/data/1804b3f43/e69212df5110466bb768350c30578b5a/FLAGd4460d041 [2022-11-16 12:34:57,488 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:34:57,489 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i [2022-11-16 12:34:57,496 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/data/1804b3f43/e69212df5110466bb768350c30578b5a/FLAGd4460d041 [2022-11-16 12:34:57,902 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/data/1804b3f43/e69212df5110466bb768350c30578b5a [2022-11-16 12:34:57,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:34:57,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:34:57,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:34:57,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:34:57,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:34:57,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:34:57" (1/1) ... [2022-11-16 12:34:57,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4deb55ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:57, skipping insertion in model container [2022-11-16 12:34:57,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:34:57" (1/1) ... [2022-11-16 12:34:57,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:34:57,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:34:58,122 WARN L229 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_6c3155a3-6b1f-4b67-b551-433c7704f692/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[1226,1239] [2022-11-16 12:34:58,147 WARN L229 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_6c3155a3-6b1f-4b67-b551-433c7704f692/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[2862,2875] [2022-11-16 12:34:58,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:34:58,160 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:34:58,174 WARN L229 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_6c3155a3-6b1f-4b67-b551-433c7704f692/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[1226,1239] [2022-11-16 12:34:58,186 WARN L229 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_6c3155a3-6b1f-4b67-b551-433c7704f692/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[2862,2875] [2022-11-16 12:34:58,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:34:58,202 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:34:58,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:58 WrapperNode [2022-11-16 12:34:58,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:34:58,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:34:58,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:34:58,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:34:58,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:58" (1/1) ... [2022-11-16 12:34:58,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:58" (1/1) ... [2022-11-16 12:34:58,244 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 90 [2022-11-16 12:34:58,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:34:58,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:34:58,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:34:58,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:34:58,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:58" (1/1) ... [2022-11-16 12:34:58,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:58" (1/1) ... [2022-11-16 12:34:58,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:58" (1/1) ... [2022-11-16 12:34:58,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:58" (1/1) ... [2022-11-16 12:34:58,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:58" (1/1) ... [2022-11-16 12:34:58,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:58" (1/1) ... [2022-11-16 12:34:58,268 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:58" (1/1) ... [2022-11-16 12:34:58,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:58" (1/1) ... [2022-11-16 12:34:58,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:34:58,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:34:58,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:34:58,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:34:58,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:58" (1/1) ... [2022-11-16 12:34:58,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:34:58,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:34:58,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:34:58,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:34:58,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:34:58,383 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-16 12:34:58,383 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-16 12:34:58,383 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 12:34:58,385 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 12:34:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:34:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:34:58,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:34:58,468 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:34:58,471 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:34:58,726 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:34:58,734 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:34:58,734 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:34:58,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:34:58 BoogieIcfgContainer [2022-11-16 12:34:58,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:34:58,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:34:58,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:34:58,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:34:58,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:34:57" (1/3) ... [2022-11-16 12:34:58,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3d0f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:34:58, skipping insertion in model container [2022-11-16 12:34:58,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:58" (2/3) ... [2022-11-16 12:34:58,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3d0f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:34:58, skipping insertion in model container [2022-11-16 12:34:58,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:34:58" (3/3) ... [2022-11-16 12:34:58,761 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_4.i [2022-11-16 12:34:58,784 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:34:58,784 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:34:58,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:34:58,851 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;@e408e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:34:58,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:34:58,863 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) [2022-11-16 12:34:58,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:34:58,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:34:58,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:34:58,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:34:58,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:34:58,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-16 12:34:58,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:34:58,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648686393] [2022-11-16 12:34:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:34:58,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:34:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:34:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:34:59,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:34:59,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648686393] [2022-11-16 12:34:59,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648686393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:34:59,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:34:59,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:34:59,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319863330] [2022-11-16 12:34:59,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:34:59,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:34:59,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:34:59,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:34:59,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:34:59,356 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) [2022-11-16 12:34:59,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:34:59,450 INFO L93 Difference]: Finished difference Result 96 states and 121 transitions. [2022-11-16 12:34:59,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:34:59,453 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 [2022-11-16 12:34:59,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:34:59,462 INFO L225 Difference]: With dead ends: 96 [2022-11-16 12:34:59,462 INFO L226 Difference]: Without dead ends: 39 [2022-11-16 12:34:59,466 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 [2022-11-16 12:34:59,471 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, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:34:59,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 122 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:34:59,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-16 12:34:59,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-11-16 12:34:59,512 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) [2022-11-16 12:34:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-11-16 12:34:59,515 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2022-11-16 12:34:59,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:34:59,516 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-11-16 12:34:59,516 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) [2022-11-16 12:34:59,517 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-11-16 12:34:59,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:34:59,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:34:59,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:34:59,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:34:59,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:34:59,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:34:59,520 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-11-16 12:34:59,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:34:59,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422807574] [2022-11-16 12:34:59,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:34:59,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:34:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:34:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:34:59,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:34:59,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422807574] [2022-11-16 12:34:59,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422807574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:34:59,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:34:59,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:34:59,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142826855] [2022-11-16 12:34:59,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:34:59,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:34:59,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:34:59,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:34:59,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:34:59,675 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) [2022-11-16 12:34:59,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:34:59,741 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-16 12:34:59,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:34:59,744 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 [2022-11-16 12:34:59,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:34:59,745 INFO L225 Difference]: With dead ends: 39 [2022-11-16 12:34:59,745 INFO L226 Difference]: Without dead ends: 33 [2022-11-16 12:34:59,746 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 [2022-11-16 12:34:59,747 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 [2022-11-16 12:34:59,748 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] [2022-11-16 12:34:59,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-16 12:34:59,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-16 12:34:59,753 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) [2022-11-16 12:34:59,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-16 12:34:59,755 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-11-16 12:34:59,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:34:59,755 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-16 12:34:59,755 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) [2022-11-16 12:34:59,755 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-16 12:34:59,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:34:59,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:34:59,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:34:59,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:34:59,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:34:59,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:34:59,758 INFO L85 PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times [2022-11-16 12:34:59,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:34:59,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711655013] [2022-11-16 12:34:59,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:34:59,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:34:59,790 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:34:59,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652101920] [2022-11-16 12:34:59,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:34:59,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:34:59,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:34:59,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:34:59,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:34:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:34:59,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:34:59,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:00,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:00,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:35:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:00,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:00,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711655013] [2022-11-16 12:35:00,141 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:00,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652101920] [2022-11-16 12:35:00,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652101920] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:35:00,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:35:00,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-11-16 12:35:00,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805678019] [2022-11-16 12:35:00,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:35:00,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:35:00,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:00,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:35:00,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:35:00,148 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) [2022-11-16 12:35:00,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:00,295 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-11-16 12:35:00,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:35:00,296 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 [2022-11-16 12:35:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:00,298 INFO L225 Difference]: With dead ends: 40 [2022-11-16 12:35:00,299 INFO L226 Difference]: Without dead ends: 34 [2022-11-16 12:35:00,300 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 [2022-11-16 12:35:00,306 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-16 12:35:00,307 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] [2022-11-16 12:35:00,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-16 12:35:00,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-16 12:35:00,317 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) [2022-11-16 12:35:00,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-11-16 12:35:00,318 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 12 [2022-11-16 12:35:00,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:00,319 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-11-16 12:35:00,319 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) [2022-11-16 12:35:00,319 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-11-16 12:35:00,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:35:00,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:00,322 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:00,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:00,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:00,537 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:35:00,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:00,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1659957129, now seen corresponding path program 2 times [2022-11-16 12:35:00,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:00,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115880166] [2022-11-16 12:35:00,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:00,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:00,553 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:00,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407768329] [2022-11-16 12:35:00,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:35:00,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:00,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:00,555 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:00,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:35:00,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:35:00,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:35:00,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:35:00,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:15,721 WARN L233 SmtUtils]: Spent 13.93s on a formula simplification. DAG size of input: 72 DAG size of output: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:35:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:17,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:43:45,774 WARN L233 SmtUtils]: Spent 8.27m on a formula simplification. DAG size of input: 129 DAG size of output: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:44:07,841 WARN L233 SmtUtils]: Spent 18.72s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:44:08,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:08,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:08,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115880166] [2022-11-16 12:44:08,856 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:44:08,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407768329] [2022-11-16 12:44:08,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407768329] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:44:08,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:44:08,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 12:44:08,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232877769] [2022-11-16 12:44:08,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:44:08,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:44:08,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:08,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:44:08,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=196, Unknown=1, NotChecked=0, Total=240 [2022-11-16 12:44:08,860 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) [2022-11-16 12:44:15,516 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:44:15,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:44:15,541 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-11-16 12:44:15,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:44:15,542 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 [2022-11-16 12:44:15,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:44:15,543 INFO L225 Difference]: With dead ends: 41 [2022-11-16 12:44:15,543 INFO L226 Difference]: Without dead ends: 35 [2022-11-16 12:44:15,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 540.9s TimeCoverageRelationStatistics Valid=50, Invalid=221, Unknown=1, NotChecked=0, Total=272 [2022-11-16 12:44:15,545 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:44:15,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 302 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2022-11-16 12:44:15,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-16 12:44:15,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-16 12:44:15,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 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) [2022-11-16 12:44:15,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-11-16 12:44:15,552 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 13 [2022-11-16 12:44:15,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:44:15,553 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-11-16 12:44:15,553 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) [2022-11-16 12:44:15,553 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-11-16 12:44:15,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:44:15,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:44:15,554 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:15,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 12:44:15,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:15,761 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:44:15,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:15,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1682229690, now seen corresponding path program 3 times [2022-11-16 12:44:15,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:15,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024699086] [2022-11-16 12:44:15,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:15,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:15,783 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:44:15,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476237292] [2022-11-16 12:44:15,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:44:15,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:15,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:15,791 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:15,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:44:15,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:44:15,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:44:15,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-16 12:44:15,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:41,559 WARN L233 SmtUtils]: Spent 17.46s on a formula simplification. DAG size of input: 55 DAG size of output: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:45:26,964 WARN L233 SmtUtils]: Spent 27.58s on a formula simplification that was a NOOP. DAG size: 95 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:45:47,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:47,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024699086] [2022-11-16 12:45:47,179 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:45:47,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476237292] [2022-11-16 12:45:47,180 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-16 12:45:47,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 139 [2022-11-16 12:45:47,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:45:47,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:45:47,381 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_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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:370) 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:649) 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:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) 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.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) 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) ... 51 more [2022-11-16 12:45:47,384 INFO L158 Benchmark]: Toolchain (without parser) took 649478.58ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 104.3MB in the beginning and 131.9MB in the end (delta: -27.6MB). Peak memory consumption was 91.4MB. Max. memory is 16.1GB. [2022-11-16 12:45:47,385 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 138.4MB. Free memory was 110.8MB in the beginning and 110.8MB in the end (delta: 29.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:45:47,385 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.40ms. Allocated memory is still 138.4MB. Free memory was 104.0MB in the beginning and 112.4MB in the end (delta: -8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:45:47,385 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.50ms. Allocated memory is still 138.4MB. Free memory was 112.4MB in the beginning and 110.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:45:47,386 INFO L158 Benchmark]: Boogie Preprocessor took 25.84ms. Allocated memory is still 138.4MB. Free memory was 110.9MB in the beginning and 109.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:45:47,386 INFO L158 Benchmark]: RCFGBuilder took 465.15ms. Allocated memory is still 138.4MB. Free memory was 109.3MB in the beginning and 97.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:45:47,386 INFO L158 Benchmark]: TraceAbstraction took 648644.04ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 96.2MB in the beginning and 131.9MB in the end (delta: -35.7MB). Peak memory consumption was 83.8MB. Max. memory is 16.1GB. [2022-11-16 12:45:47,395 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 138.4MB. Free memory was 110.8MB in the beginning and 110.8MB in the end (delta: 29.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.40ms. Allocated memory is still 138.4MB. Free memory was 104.0MB in the beginning and 112.4MB in the end (delta: -8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.50ms. Allocated memory is still 138.4MB. Free memory was 112.4MB in the beginning and 110.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.84ms. Allocated memory is still 138.4MB. Free memory was 110.9MB in the beginning and 109.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 465.15ms. Allocated memory is still 138.4MB. Free memory was 109.3MB in the beginning and 97.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 648644.04ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 96.2MB in the beginning and 131.9MB in the end (delta: -35.7MB). Peak memory consumption was 83.8MB. 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_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8 --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-e04fb08 [2022-11-16 12:45:49,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:45:49,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:45:49,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:45:49,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:45:49,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:45:49,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:45:49,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:45:49,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:45:49,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:45:49,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:45:49,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:45:49,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:45:49,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:45:49,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:45:49,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:45:49,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:45:49,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:45:49,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:45:49,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:45:49,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:45:49,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:45:49,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:45:49,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:45:49,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:45:49,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:45:49,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:45:49,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:45:49,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:45:49,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:45:49,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:45:49,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:45:49,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:45:49,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:45:49,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:45:49,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:45:49,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:45:49,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:45:49,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:45:49,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:45:49,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:45:49,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-16 12:45:49,787 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:45:49,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:45:49,789 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:45:49,789 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:45:49,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:45:49,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:45:49,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:45:49,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:45:49,793 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:45:49,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:45:49,795 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:45:49,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:45:49,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:45:49,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:45:49,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:45:49,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:45:49,797 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:45:49,797 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:45:49,798 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:45:49,798 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:45:49,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:45:49,798 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:45:49,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:45:49,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:45:49,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:45:49,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:45:49,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:45:49,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:45:49,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:45:49,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:45:49,801 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:45:49,802 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:45:49,802 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:45:49,802 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:45:49,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:45:49,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:45:49,803 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8259989f7570bf558987b7e4c2e7f61d77e5fd2d99fcc8a9ebe16670ccb62e9 [2022-11-16 12:45:50,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:45:50,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:45:50,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:45:50,307 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:45:50,308 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:45:50,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/gcd_2+newton_3_4.i [2022-11-16 12:45:50,411 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/data/bb5c5b219/cd0f210899b7425e8b7c3a61f07e403e/FLAG4e19727a6 [2022-11-16 12:45:51,122 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:45:51,127 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i [2022-11-16 12:45:51,138 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/data/bb5c5b219/cd0f210899b7425e8b7c3a61f07e403e/FLAG4e19727a6 [2022-11-16 12:45:51,446 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/data/bb5c5b219/cd0f210899b7425e8b7c3a61f07e403e [2022-11-16 12:45:51,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:45:51,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:45:51,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:45:51,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:45:51,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:45:51,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:45:51" (1/1) ... [2022-11-16 12:45:51,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3efd09ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:51, skipping insertion in model container [2022-11-16 12:45:51,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:45:51" (1/1) ... [2022-11-16 12:45:51,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:45:51,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:45:51,649 WARN L229 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_6c3155a3-6b1f-4b67-b551-433c7704f692/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[1226,1239] [2022-11-16 12:45:51,675 WARN L229 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_6c3155a3-6b1f-4b67-b551-433c7704f692/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[2862,2875] [2022-11-16 12:45:51,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:45:51,689 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:45:51,715 WARN L229 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_6c3155a3-6b1f-4b67-b551-433c7704f692/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[1226,1239] [2022-11-16 12:45:51,749 WARN L229 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_6c3155a3-6b1f-4b67-b551-433c7704f692/sv-benchmarks/c/combinations/gcd_2+newton_3_4.i[2862,2875] [2022-11-16 12:45:51,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:45:51,784 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:45:51,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:51 WrapperNode [2022-11-16 12:45:51,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:45:51,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:45:51,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:45:51,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:45:51,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:51" (1/1) ... [2022-11-16 12:45:51,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:51" (1/1) ... [2022-11-16 12:45:51,852 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2022-11-16 12:45:51,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:45:51,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:45:51,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:45:51,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:45:51,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:51" (1/1) ... [2022-11-16 12:45:51,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:51" (1/1) ... [2022-11-16 12:45:51,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:51" (1/1) ... [2022-11-16 12:45:51,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:51" (1/1) ... [2022-11-16 12:45:51,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:51" (1/1) ... [2022-11-16 12:45:51,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:51" (1/1) ... [2022-11-16 12:45:51,914 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:51" (1/1) ... [2022-11-16 12:45:51,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:51" (1/1) ... [2022-11-16 12:45:51,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:45:51,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:45:51,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:45:51,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:45:51,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:51" (1/1) ... [2022-11-16 12:45:51,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:45:51,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:45:51,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:45:51,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:45:52,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:45:52,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:45:52,009 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-16 12:45:52,009 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-16 12:45:52,009 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 12:45:52,009 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 12:45:52,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:45:52,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:45:52,133 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:45:52,135 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:46:00,136 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:46:00,143 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:46:00,144 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:46:00,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:46:00 BoogieIcfgContainer [2022-11-16 12:46:00,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:46:00,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:46:00,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:46:00,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:46:00,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:45:51" (1/3) ... [2022-11-16 12:46:00,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ef8ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:46:00, skipping insertion in model container [2022-11-16 12:46:00,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:45:51" (2/3) ... [2022-11-16 12:46:00,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ef8ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:46:00, skipping insertion in model container [2022-11-16 12:46:00,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:46:00" (3/3) ... [2022-11-16 12:46:00,164 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_4.i [2022-11-16 12:46:00,186 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:46:00,186 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:46:00,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:46:00,247 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;@2d22dbf9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:46:00,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:46:00,252 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) [2022-11-16 12:46:00,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:46:00,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:00,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:00,262 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:46:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:00,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-16 12:46:00,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:46:00,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532972419] [2022-11-16 12:46:00,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:00,283 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 [2022-11-16 12:46:00,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:46:00,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:46:00,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:46:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:00,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:46:00,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:46:00,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:00,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:46:00,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:46:00,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532972419] [2022-11-16 12:46:00,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532972419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:00,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:00,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:46:00,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310583811] [2022-11-16 12:46:00,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:00,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:46:00,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:46:00,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:46:00,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:46:00,666 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) [2022-11-16 12:46:00,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:46:00,716 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2022-11-16 12:46:00,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:46:00,719 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 [2022-11-16 12:46:00,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:46:00,738 INFO L225 Difference]: With dead ends: 74 [2022-11-16 12:46:00,738 INFO L226 Difference]: Without dead ends: 33 [2022-11-16 12:46:00,742 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 [2022-11-16 12:46:00,747 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:46:00,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2022-11-16 12:46:00,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-16 12:46:00,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-16 12:46:00,791 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) [2022-11-16 12:46:00,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-16 12:46:00,794 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2022-11-16 12:46:00,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:46:00,795 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-16 12:46:00,795 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) [2022-11-16 12:46:00,795 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-16 12:46:00,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:46:00,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:00,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:00,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:46:01,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:46:01,016 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:46:01,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:01,017 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-11-16 12:46:01,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:46:01,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756492035] [2022-11-16 12:46:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:01,018 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 [2022-11-16 12:46:01,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:46:01,020 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:46:01,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:46:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:01,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:46:01,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:46:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:01,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:46:01,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:46:01,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756492035] [2022-11-16 12:46:01,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756492035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:01,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:01,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:46:01,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640178169] [2022-11-16 12:46:01,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:01,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:46:01,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:46:01,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:46:01,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:46:01,280 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) [2022-11-16 12:46:01,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:46:01,499 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-11-16 12:46:01,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:46:01,500 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 [2022-11-16 12:46:01,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:46:01,501 INFO L225 Difference]: With dead ends: 40 [2022-11-16 12:46:01,501 INFO L226 Difference]: Without dead ends: 34 [2022-11-16 12:46:01,502 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 [2022-11-16 12:46:01,503 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:46:01,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 99 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:46:01,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-16 12:46:01,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-11-16 12:46:01,511 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) [2022-11-16 12:46:01,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-16 12:46:01,512 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2022-11-16 12:46:01,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:46:01,513 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-16 12:46:01,513 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) [2022-11-16 12:46:01,513 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-16 12:46:01,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:46:01,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:01,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:01,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:46:01,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:46:01,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:46:01,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:01,729 INFO L85 PathProgramCache]: Analyzing trace with hash 149955676, now seen corresponding path program 1 times [2022-11-16 12:46:01,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:46:01,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884568968] [2022-11-16 12:46:01,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:01,731 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 [2022-11-16 12:46:01,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:46:01,734 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:46:01,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:46:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:01,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:46:01,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:46:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:46:01,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:46:01,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:46:01,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884568968] [2022-11-16 12:46:01,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884568968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:01,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:01,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:46:01,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611547265] [2022-11-16 12:46:01,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:01,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:46:01,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:46:01,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:46:01,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:46:01,976 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) [2022-11-16 12:46:02,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:46:02,105 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-11-16 12:46:02,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:46:02,106 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 [2022-11-16 12:46:02,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:46:02,107 INFO L225 Difference]: With dead ends: 41 [2022-11-16 12:46:02,107 INFO L226 Difference]: Without dead ends: 33 [2022-11-16 12:46:02,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:46:02,108 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 [2022-11-16 12:46:02,109 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] [2022-11-16 12:46:02,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-16 12:46:02,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-16 12:46:02,115 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) [2022-11-16 12:46:02,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-16 12:46:02,116 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 12 [2022-11-16 12:46:02,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:46:02,117 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-16 12:46:02,117 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) [2022-11-16 12:46:02,117 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-16 12:46:02,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:46:02,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:02,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:02,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:46:02,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:46:02,331 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:46:02,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:02,332 INFO L85 PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times [2022-11-16 12:46:02,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:46:02,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541276050] [2022-11-16 12:46:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:02,333 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 [2022-11-16 12:46:02,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:46:02,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:46:02,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:46:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:02,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:46:02,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:46:03,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:03,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:46:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:03,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:46:03,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541276050] [2022-11-16 12:46:03,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541276050] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:46:03,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:46:03,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-16 12:46:03,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557778751] [2022-11-16 12:46:03,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:46:03,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:46:03,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:46:03,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:46:03,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:46:03,975 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) [2022-11-16 12:46:06,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:46:06,555 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-11-16 12:46:06,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:46:06,557 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 [2022-11-16 12:46:06,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:46:06,558 INFO L225 Difference]: With dead ends: 50 [2022-11-16 12:46:06,559 INFO L226 Difference]: Without dead ends: 36 [2022-11-16 12:46:06,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:46:06,561 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 [2022-11-16 12:46:06,562 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] [2022-11-16 12:46:06,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-16 12:46:06,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-16 12:46:06,569 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) [2022-11-16 12:46:06,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-11-16 12:46:06,570 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 12 [2022-11-16 12:46:06,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:46:06,571 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-11-16 12:46:06,571 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) [2022-11-16 12:46:06,572 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-11-16 12:46:06,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:46:06,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:06,573 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:06,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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)] Forceful destruction successful, exit code 0 [2022-11-16 12:46:06,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:46:06,775 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:46:06,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:06,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2084161321, now seen corresponding path program 2 times [2022-11-16 12:46:06,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:46:06,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147011765] [2022-11-16 12:46:06,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:46:06,781 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 [2022-11-16 12:46:06,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:46:06,782 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:46:06,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3155a3-6b1f-4b67-b551-433c7704f692/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:46:13,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:46:13,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:46:13,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 12:46:13,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:47:15,159 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 21 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 12:47:28,709 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 28 DAG size of output: 3 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:47:28,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:28,710 INFO L328 TraceCheckSpWp]: Computing backward predicates...