./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R --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 a2fc902d06a9677a744e95b3e4aa2d9ade69a1fc168c97563c1ba760b1699777 --- 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-38b53e6 [2022-11-25 17:13:56,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:13:56,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:13:56,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:13:56,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:13:56,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:13:56,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:13:56,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:13:56,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:13:56,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:13:56,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:13:56,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:13:56,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:13:56,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:13:56,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:13:56,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:13:56,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:13:56,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:13:56,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:13:56,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:13:56,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:13:56,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:13:56,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:13:56,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:13:56,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:13:56,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:13:56,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:13:56,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:13:56,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:13:56,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:13:56,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:13:56,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:13:56,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:13:56,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:13:56,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:13:56,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:13:56,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:13:56,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:13:56,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:13:56,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:13:56,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:13:56,652 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:13:56,688 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:13:56,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:13:56,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:13:56,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:13:56,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:13:56,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:13:56,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:13:56,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:13:56,696 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:13:56,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:13:56,697 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:13:56,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:13:56,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:13:56,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:13:56,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:13:56,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:13:56,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:13:56,699 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:13:56,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:13:56,699 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:13:56,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:13:56,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:13:56,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:13:56,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:13:56,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:13:56,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:13:56,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:13:56,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:13:56,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:13:56,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:13:56,702 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:13:56,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:13:56,703 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:13:56,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:13:56,703 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2fc902d06a9677a744e95b3e4aa2d9ade69a1fc168c97563c1ba760b1699777 [2022-11-25 17:13:56,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:13:57,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:13:57,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:13:57,012 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:13:57,013 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:13:57,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i [2022-11-25 17:14:00,108 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:14:00,355 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:14:00,356 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i [2022-11-25 17:14:00,363 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/data/23bf1f878/2d0b203431ac4694b0eff1e65db90677/FLAGc2c529b8e [2022-11-25 17:14:00,383 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/data/23bf1f878/2d0b203431ac4694b0eff1e65db90677 [2022-11-25 17:14:00,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:14:00,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:14:00,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:14:00,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:14:00,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:14:00,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:14:00" (1/1) ... [2022-11-25 17:14:00,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db4a19c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:00, skipping insertion in model container [2022-11-25 17:14:00,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:14:00" (1/1) ... [2022-11-25 17:14:00,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:14:00,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:14:00,613 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i[821,834] [2022-11-25 17:14:00,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:14:00,638 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:14:00,652 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i[821,834] [2022-11-25 17:14:00,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:14:00,672 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:14:00,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:00 WrapperNode [2022-11-25 17:14:00,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:14:00,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:14:00,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:14:00,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:14:00,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:00" (1/1) ... [2022-11-25 17:14:00,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:00" (1/1) ... [2022-11-25 17:14:00,714 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2022-11-25 17:14:00,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:14:00,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:14:00,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:14:00,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:14:00,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:00" (1/1) ... [2022-11-25 17:14:00,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:00" (1/1) ... [2022-11-25 17:14:00,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:00" (1/1) ... [2022-11-25 17:14:00,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:00" (1/1) ... [2022-11-25 17:14:00,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:00" (1/1) ... [2022-11-25 17:14:00,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:00" (1/1) ... [2022-11-25 17:14:00,758 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:00" (1/1) ... [2022-11-25 17:14:00,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:00" (1/1) ... [2022-11-25 17:14:00,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:14:00,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:14:00,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:14:00,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:14:00,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:00" (1/1) ... [2022-11-25 17:14:00,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:14:00,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:14:00,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:14:00,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:14:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:14:00,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:14:00,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:14:00,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:14:00,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:14:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:14:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:14:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:14:00,941 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:14:00,943 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:14:01,123 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:14:01,129 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:14:01,129 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 17:14:01,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:14:01 BoogieIcfgContainer [2022-11-25 17:14:01,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:14:01,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:14:01,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:14:01,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:14:01,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:14:00" (1/3) ... [2022-11-25 17:14:01,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370cd263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:14:01, skipping insertion in model container [2022-11-25 17:14:01,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:00" (2/3) ... [2022-11-25 17:14:01,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370cd263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:14:01, skipping insertion in model container [2022-11-25 17:14:01,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:14:01" (3/3) ... [2022-11-25 17:14:01,141 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_minInArray_ground-2.i [2022-11-25 17:14:01,162 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:14:01,162 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:14:01,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:14:01,220 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;@10d6433d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:14:01,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:14:01,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 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) [2022-11-25 17:14:01,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 17:14:01,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:01,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:01,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:01,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:01,239 INFO L85 PathProgramCache]: Analyzing trace with hash -2005182879, now seen corresponding path program 1 times [2022-11-25 17:14:01,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:01,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137237792] [2022-11-25 17:14:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:01,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:01,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:14:01,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:01,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137237792] [2022-11-25 17:14:01,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137237792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:01,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:01,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:14:01,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989336851] [2022-11-25 17:14:01,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:01,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:14:01,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:01,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:14:01,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:14:01,597 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-25 17:14:01,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:01,687 INFO L93 Difference]: Finished difference Result 39 states and 56 transitions. [2022-11-25 17:14:01,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:14:01,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-11-25 17:14:01,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:01,699 INFO L225 Difference]: With dead ends: 39 [2022-11-25 17:14:01,713 INFO L226 Difference]: Without dead ends: 20 [2022-11-25 17:14:01,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:14:01,720 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:01,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:14:01,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-25 17:14:01,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2022-11-25 17:14:01,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:01,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-25 17:14:01,792 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2022-11-25 17:14:01,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:01,792 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-25 17:14:01,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-25 17:14:01,793 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-25 17:14:01,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 17:14:01,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:01,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:01,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:14:01,795 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:01,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:01,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1959207727, now seen corresponding path program 1 times [2022-11-25 17:14:01,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:01,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796342146] [2022-11-25 17:14:01,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:01,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:01,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:14:01,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:01,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796342146] [2022-11-25 17:14:01,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796342146] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:14:01,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994086668] [2022-11-25 17:14:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:01,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:01,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:14:01,971 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:14:01,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:14:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:02,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:14:02,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:14:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:14:02,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:14:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:14:02,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994086668] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:14:02,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:14:02,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-25 17:14:02,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509424307] [2022-11-25 17:14:02,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:14:02,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:14:02,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:02,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:14:02,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:14:02,163 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2022-11-25 17:14:02,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:02,238 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2022-11-25 17:14:02,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:14:02,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 14 [2022-11-25 17:14:02,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:02,240 INFO L225 Difference]: With dead ends: 44 [2022-11-25 17:14:02,240 INFO L226 Difference]: Without dead ends: 32 [2022-11-25 17:14:02,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:14:02,243 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:02,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 25 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:14:02,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-25 17:14:02,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-25 17:14:02,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 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) [2022-11-25 17:14:02,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-11-25 17:14:02,251 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 14 [2022-11-25 17:14:02,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:02,252 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-11-25 17:14:02,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2022-11-25 17:14:02,252 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-11-25 17:14:02,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 17:14:02,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:02,254 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:02,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 17:14:02,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:02,460 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:02,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:02,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1208394382, now seen corresponding path program 2 times [2022-11-25 17:14:02,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:02,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530384635] [2022-11-25 17:14:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:02,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 17:14:02,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:02,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530384635] [2022-11-25 17:14:02,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530384635] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:14:02,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100444784] [2022-11-25 17:14:02,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:14:02,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:02,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:14:02,723 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:14:02,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:14:02,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:14:02,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:14:02,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:14:02,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:14:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 17:14:02,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:14:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 17:14:02,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100444784] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:14:02,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:14:02,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-25 17:14:02,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766079628] [2022-11-25 17:14:02,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:14:02,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:14:02,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:02,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:14:02,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:14:02,941 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2022-11-25 17:14:03,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:03,083 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2022-11-25 17:14:03,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:14:03,084 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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 29 [2022-11-25 17:14:03,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:03,085 INFO L225 Difference]: With dead ends: 83 [2022-11-25 17:14:03,085 INFO L226 Difference]: Without dead ends: 62 [2022-11-25 17:14:03,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:14:03,087 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 62 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:03,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 47 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:14:03,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-25 17:14:03,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-25 17:14:03,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 61 states have internal predecessors, (74), 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) [2022-11-25 17:14:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2022-11-25 17:14:03,103 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 29 [2022-11-25 17:14:03,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:03,103 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2022-11-25 17:14:03,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2022-11-25 17:14:03,103 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2022-11-25 17:14:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-25 17:14:03,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:03,105 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:03,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:14:03,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:03,313 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:03,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1285339298, now seen corresponding path program 3 times [2022-11-25 17:14:03,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:03,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160989584] [2022-11-25 17:14:03,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:03,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-25 17:14:03,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:03,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160989584] [2022-11-25 17:14:03,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160989584] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:14:03,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734694123] [2022-11-25 17:14:03,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:14:03,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:03,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:14:03,930 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:14:03,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:14:04,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-25 17:14:04,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:14:04,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 17:14:04,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:14:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-25 17:14:04,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:14:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-25 17:14:04,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734694123] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:14:04,494 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:14:04,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-11-25 17:14:04,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093036107] [2022-11-25 17:14:04,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:14:04,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-25 17:14:04,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:04,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-25 17:14:04,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-25 17:14:04,498 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 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) [2022-11-25 17:14:04,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:04,746 INFO L93 Difference]: Finished difference Result 161 states and 220 transitions. [2022-11-25 17:14:04,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 17:14:04,747 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-11-25 17:14:04,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:04,748 INFO L225 Difference]: With dead ends: 161 [2022-11-25 17:14:04,748 INFO L226 Difference]: Without dead ends: 122 [2022-11-25 17:14:04,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-25 17:14:04,750 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 84 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:04,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 83 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:14:04,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-25 17:14:04,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2022-11-25 17:14:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.2066115702479339) internal successors, (146), 121 states have internal predecessors, (146), 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) [2022-11-25 17:14:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 146 transitions. [2022-11-25 17:14:04,764 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 146 transitions. Word has length 59 [2022-11-25 17:14:04,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:04,764 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 146 transitions. [2022-11-25 17:14:04,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 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) [2022-11-25 17:14:04,765 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 146 transitions. [2022-11-25 17:14:04,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-25 17:14:04,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:04,768 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:04,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:14:04,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:04,974 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:04,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1971297078, now seen corresponding path program 4 times [2022-11-25 17:14:04,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:04,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821264236] [2022-11-25 17:14:04,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:04,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-11-25 17:14:05,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:05,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821264236] [2022-11-25 17:14:05,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821264236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:14:05,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507325058] [2022-11-25 17:14:05,904 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:14:05,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:05,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:14:05,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:14:05,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:14:06,061 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:14:06,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:14:06,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 17:14:06,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:14:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-11-25 17:14:06,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:14:07,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-11-25 17:14:07,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507325058] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:14:07,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:14:07,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-11-25 17:14:07,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793086640] [2022-11-25 17:14:07,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:14:07,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-25 17:14:07,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:07,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-25 17:14:07,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-25 17:14:07,114 INFO L87 Difference]: Start difference. First operand 122 states and 146 transitions. Second operand has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 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) [2022-11-25 17:14:07,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:07,780 INFO L93 Difference]: Finished difference Result 317 states and 436 transitions. [2022-11-25 17:14:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-25 17:14:07,781 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 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 119 [2022-11-25 17:14:07,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:07,783 INFO L225 Difference]: With dead ends: 317 [2022-11-25 17:14:07,783 INFO L226 Difference]: Without dead ends: 242 [2022-11-25 17:14:07,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-25 17:14:07,785 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 467 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:07,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 75 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:14:07,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-25 17:14:07,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2022-11-25 17:14:07,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.2033195020746887) internal successors, (290), 241 states have internal predecessors, (290), 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) [2022-11-25 17:14:07,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 290 transitions. [2022-11-25 17:14:07,803 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 290 transitions. Word has length 119 [2022-11-25 17:14:07,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:07,803 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 290 transitions. [2022-11-25 17:14:07,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 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) [2022-11-25 17:14:07,804 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 290 transitions. [2022-11-25 17:14:07,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-25 17:14:07,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:07,811 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:07,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:14:08,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:08,019 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:08,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:08,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1676624614, now seen corresponding path program 5 times [2022-11-25 17:14:08,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:08,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932441074] [2022-11-25 17:14:08,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:08,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2022-11-25 17:14:10,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:10,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932441074] [2022-11-25 17:14:10,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932441074] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:14:10,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914836220] [2022-11-25 17:14:10,941 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:14:10,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:10,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:14:10,945 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:14:10,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:16:15,953 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-11-25 17:16:15,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:16:16,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-25 17:16:16,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:16,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2022-11-25 17:16:16,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:16:19,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2022-11-25 17:16:19,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914836220] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:16:19,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:16:19,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2022-11-25 17:16:19,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41163925] [2022-11-25 17:16:19,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:16:19,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-11-25 17:16:19,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:19,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-11-25 17:16:19,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-11-25 17:16:19,781 INFO L87 Difference]: Start difference. First operand 242 states and 290 transitions. Second operand has 97 states, 97 states have (on average 4.0) internal successors, (388), 97 states have internal predecessors, (388), 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) [2022-11-25 17:16:21,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:16:21,786 INFO L93 Difference]: Finished difference Result 629 states and 868 transitions. [2022-11-25 17:16:21,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-25 17:16:21,786 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 4.0) internal successors, (388), 97 states have internal predecessors, (388), 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 239 [2022-11-25 17:16:21,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:16:21,789 INFO L225 Difference]: With dead ends: 629 [2022-11-25 17:16:21,789 INFO L226 Difference]: Without dead ends: 482 [2022-11-25 17:16:21,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-11-25 17:16:21,793 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 624 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:16:21,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 138 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 17:16:21,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-11-25 17:16:21,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2022-11-25 17:16:21,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.2016632016632016) internal successors, (578), 481 states have internal predecessors, (578), 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) [2022-11-25 17:16:21,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 578 transitions. [2022-11-25 17:16:21,822 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 578 transitions. Word has length 239 [2022-11-25 17:16:21,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:16:21,823 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 578 transitions. [2022-11-25 17:16:21,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 4.0) internal successors, (388), 97 states have internal predecessors, (388), 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) [2022-11-25 17:16:21,825 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 578 transitions. [2022-11-25 17:16:21,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-11-25 17:16:21,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:16:21,832 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:21,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:22,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 17:16:22,046 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:16:22,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:22,047 INFO L85 PathProgramCache]: Analyzing trace with hash 833449402, now seen corresponding path program 6 times [2022-11-25 17:16:22,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:22,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715639485] [2022-11-25 17:16:22,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:22,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 13207 trivial. 0 not checked. [2022-11-25 17:16:32,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:32,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715639485] [2022-11-25 17:16:32,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715639485] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:16:32,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125761079] [2022-11-25 17:16:32,310 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 17:16:32,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:32,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:32,313 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:32,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad811dfd-93c0-458e-91f2-69322171d014/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process